Consulta: subjectFacets:"Arbuscular mycorrhizal fungi"
Registros recuperados: 27
Data/hora: 01/06/2024 10:09:16

Fertilización fosfatada en chile guajillo (Capsicum annuum L.) y su interacción con hongos micorrízicos arbusculares.
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Lucas Santoyo, Luis Gustavo.
Se evaluó el efecto de la inoculación de una mezcla de hongos micorrízicos arbusculares (HMA) compuesta por Rhizophagus intraradices, Glomus albidum, Claroideoglomus claroideum, Rhizophagus diaphanus, Acaulospora laevis, Glomus sp.1, Funneliformis geosporum, Glomus sinuosum, Acaulospora denticulata, Glomus sp.2, Glomus sp.3 y Glomus sp.4 en chile guajillo (Capsicum annuum L.) fertilizado con diferentes dosis de fósforo (0, 25, 50 y 75 kg ha-1). El nitrógeno y potasio se mantuvieron constantes (230 y 150 kg ha-1 respectivamente) en todos los tratamientos. Se usó semilla proveniente de la comunidad Nigromante, Zacatecas, y suelo con bajo contenido de fósforo (5 mg kg-1 de P-Olsen) colectado en Tequexquinahuac, Estado de México. Las evaluaciones para altura...
Palavras-chave: Chile guajillo; Hongos micorrízicos arbusculares; Fósforo; Desarrollo; Rendimiento; Arbuscular mycorrhizal fungi; Phosphorus; Development; Performance; Maestría; Edafología.
Ano: 2011
URL: http://hdl.handle.net/10521/515

Biodiversidad y función de hongos micorrízicos-arbusculares en huertas de papayo con diferente sistema de manejo de producción de isla, Veracruz
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Sangabriel Conde, Wendy.
Los hongos micorrízicos arbusculares (HMA) forman una asociación simbiótica con las  raíces de las plantas, favoreciendo un incremento en la asimilación de nutrientes del  suelo. Los HMA colonizan la mayoría de los cultivos agrícolas; entre ellos, el cultivo del  papayo presenta alto grado de dependencia micorrízica. Sin embargo, se cree que esta  asociación es afectada por las prácticas de manejo utilizadas. Por lo que, en este  trabajo se estudió la diversidad y distribución de especies de HMA así como la  colonización y potencial infectivo de éstas en huertas de papayo bajo diferente manejo  de producción en Isla, Veracruz.     Como resultado de esta investigación, se presenta esta tesis estructurada  fundamentalmente en cuatro capítulos. El primero,...
Tipo: Tesis
Palavras-chave: Diversidad; Esporas; Hongos micorrízico-arbusculares; Maestría; Agroecosistemas Tropicales; Diversity; Spores; Arbuscular mycorrhizal fungi.
Ano: 2008
URL: http://hdl.handle.net/10521/1508

Fertilización fosfatada en chile guajillo (Capsicum annuum L.) y su interacción con hongos micorrízicos arbusculares.
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Lucas Santoyo, Luis Gustavo.
Se evaluó el efecto de la inoculación de una mezcla de hongos micorrízicos arbusculares (HMA) compuesta por Rhizophagus intraradices, Glomus albidum, Claroideoglomus claroideum, Rhizophagus diaphanus, Acaulospora laevis, Glomus sp.1, Funneliformis geosporum, Glomus sinuosum, Acaulospora denticulata, Glomus sp.2, Glomus sp.3 y Glomus sp.4 en chile guajillo (Capsicum annuum L.) fertilizado con diferentes dosis de fósforo (0, 25, 50 y 75 kg ha-1). El nitrógeno y potasio se mantuvieron constantes (230 y 150 kg ha-1 respectivamente) en todos los tratamientos. Se usó semilla proveniente de la comunidad Nigromante, Zacatecas, y suelo con bajo contenido de fósforo (5 mg kg-1 de P-Olsen) colectado en Tequexquinahuac, Estado de México. Las evaluaciones para altura...
Palavras-chave: Chile guajillo; Hongos micorrízicos arbusculares; Fósforo; Desarrollo; Rendimiento; Arbuscular mycorrhizal fungi; Phosphorus; Development; Performance; Maestría; Edafología.
Ano: 2011
URL: http://hdl.handle.net/10521/515

Manejo da micorriza arbuscular em sistemas integrados de lavoura e pastagens no Cerrado.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: MIRANDA, J. C. C. de; VILELA, L.; MIRANDA, L. N. de.
ABSTRACT: The arbuscular mycorrhizal fungi community is low in Cerrado soils and it gradually increases with soil cropping. Rotations of crops and of production systems stimulate propagation of those fungi in the soil, mycorrhiza formation and its effects in the plants. The crop-pasture integrated systems are well recommended, as pastures favors spores multiplication and crops increase the number of species of those fungi in the soil. The mycorrhizal contribution on growth of soybean and Andropogon plants, used in an integrated system, was of 50 % and 90 % respectively. Crop/pasture integration brings also environmental benefits as carbon sequestration in the soil through glomalin production and the degraded pastures recovery, through quantitative and...
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Rotational cropping; Arbuscular mycorrhizal fungi; Root colonization.; Cerrado; Micorriza; Rotação de Cultura.; Crop rotation; Mycorrhizae; Spores.
Ano: 2007
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/571980

Manejo da micorriza arbuscular por meio da rotação de culturas nos sistemas agrícolas do Cerrado.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: MIRANDA, J. C. C. de; MIRANDA, L. N. de; VILELA, L.; VARGAS, M. A.; CARVALHO, A. M. de.
bitstream/CPAC-2010/20763/1/comtec-42.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Rotational cropping; Arbuscular mycorrhizal fungi; Root colonization; Brasil; Solo: Biologia e Microbiologia.; Cerrado; Micorriza; Rotação de Cultura.; Mycorrhizae; Savanna soils; Spores.
Ano: 2001
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/564225

Effect of management practices on mycorrhizal infection, growth and dry matter partitioning in field-grown bean
Provedor de dados: Pesquisa Agropecuária Brasileira
Autores: Oliveira,Antonio Alberto Rocha; Sanders,Francis Edward.
The experiment was carried out on unsterilized field soil with low phosphorus availability with the objective of examining the effect of cultural practices on mycorrhizal colonization and growth of common bean. The treatments were: three pre-crops (maize, wheat and fallow) followed by three soil management practices ("ploughing", mulching and bare fallow without "ploughing" during the winter months). After the cultural practices, Phaseolus vulgaris cv. Canadian Wonder was grown in this soil. Fallowing and soil disturbance reduced natural soil infectivity. Mycorrhizal infection of the bean roots occurred more rapidly in the recently cropped soil than in the fallow soil. Prior cropping with a strongly mycorrhizal plant (maize) increased infectivity even...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris; Arbuscular mycorrhizal fungi; Soil management practices; Crop rotation.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X1999000700018

Mycorrhizal Association and Microbial Activity of Soil Cultivated with Cassava After Application of Mesotrione and Fluazifop-p-Butyl
Provedor de dados: Planta Daninha
Autores: Silveira,H.M.; Silva,D.V.; Melo,C.A.D.; Neto,M.D.C.; Saraiva,D.T.; Ferreira,E.A.; Silva,A.A.; Freitas,M.S.
Soil is a very heterogeneous environment that allows the establishment of wide range of microorganisms populations, whose balance is affected by biotic and abiotic factors. This study has aimed to assess the effect of doses of mesotrione and fluazifop-p-butyl herbicides and two assessment periods on microbial activity and biomass of soil cultivated with cassava Cacau-UFV cultivar, besides the root colonization by arbuscular mycorrhizal fungi. Two trials were conducted in a protected environment where was realized post-emergence application of mesotrione in the doses of 72, 108, 144 and 216 g ha-1 and fluazifop-p-butyl in the doses of 100, 150, 200 and 300 g ha-1, besides a control without application. Soil samples were collected for determination of soil...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microbial biomass; Arbuscular mycorrhizal fungi; Herbicide; Manihot esculenta.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000200275

Occurrence and Structure of Arbuscular Mycorrhizal Fungal Communities in Cassava after Cultivation of Cover Crops as Observed by the “PCR-DGGE” Technique
Provedor de dados: Revista Brasileira de Ciência do Solo
Autores: Heberle,Elaine dos Santos; Armas,Rafael Dutra de; Heberle,Daniel Alexandre; Stürmer,Sidney Luiz; Peruch,Luiz Augusto Martins; Lovato,Paulo Emílio; Soares,Cláudio Roberto Fonsêca Sousa.
ABSTRACT Cassava (Manihot esculenta Crantz) is a highly mycotrophic crop, and prior soil cover may affect the density of arbuscular mycorrhizal fungi (AMFs), as well as the composition of the AMFs community in the soil. The aim of this study was to evaluate the occurrence and the structure of AMFs communities in cassava grown after different cover crops, and the effect of the cover crop on mineral nutrition and cassava yield under an organic farming system. The occurrence and structure of the AMFs community was evaluated through polymerase chain reaction (PCR) and denaturing gradient gel electrophoresis (DGGE). A randomized block experimental design was used with four replications. Six different cover crop management systems before cassava were evaluated:...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Manihot esculenta; Arbuscular mycorrhizal fungi; Root symbioses.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000501292

Biological Properties and Organic Matter Dynamics of Soil in Pasture and Natural Regeneration Areas in the Atlantic Forest Biome
Provedor de dados: Revista Brasileira de Ciência do Solo
Autores: Nogueira,Leandro Ribeiro; Silva,Cristiane Figueira da; Pereira,Marcos Gervasio; Gaia-Gomes,João Henrique; Silva,Eliane Maria Ribeiro da.
ABSTRACT The removal of original vegetation for crops and pasture production and then followed by natural regeneration is a standard practice in the Atlantic Forest, which has produced patches with different degrees of degradation and regeneration across the landscape. The aim of this study was to evaluate the effects of replacement of native forest by pasture and natural regeneration of vegetation on soil and on soil organic matter (SOM) dynamics in the dry and rainy season in an Atlantic Forest fragment in Passa Vinte, Minas Gerais (MG), Brazil. Soil samples were collected in the rainy and dry season, at a depth of 0.00-0.05 m. The variables determined were total organic carbon (TOC) and particle-size fractions of SOM [particulate organic carbon (POC)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Organic carbon; Microbial biomass; Arbuscular mycorrhizal fungi; Biodiversity; Forest fragment.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100420

ARBUSCULAR MYCORRHIZAL FUNGI AND SOIL AGGREGATION
Provedor de dados: Revista de la Ciencia del Suelo y Nutrición Vegetal
Autores: Borie,Fernando; Rubio,Rosa; Morales,Alfredo.
Soil aggregation is governed by several biotic and abiotic components including land-use management. Aggregation is essential to maintain soil physical properties and facilitate biogeochemical cycling. Hyphae of arbuscular mycorrhizal fungi (AMF) are considered to be primary soil aggregators and there is a positively correlation between AMF hyphae and aggregate stability in natural systems. Recent evidence suggests that glomalin (GRSP), a glycoprotein produced by AMF hyphae which has a cementing capacity to maintain soil particles together, is mainly involved in such aggregation. However, recently controversial results together with reported shortcoming in glomalin determinat suggest to proceed with caution when studying glomalin in connection with soil...
Tipo: Journal article
Palavras-chave: Arbuscular mycorrhizal fungi; Soil aggregates; Glomalin.
Ano: 2008
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912008000200003

Phosphorus availability changes the internal and external endomycorrhizal colonization and affects symbiotic effectivenes
Provedor de dados: Scientia Agricola
Autores: Nogueira,Marco Antonio; Cardoso,Elke Jurandy Bran Nogueira.
Despite the awareness that high phosphorus (P) availability decreases the mycorrhizal root colonization in higher plants, the effects on the external mycelium are contradicting. The aim of this work was to assess the external mycelium of the arbuscular mycorrhizal fungi (AMF) Glomus intraradices and Gigaspora rosea, associated to soybean under increasing P levels (0, 25, 50, 100 and 200 mg kg-1). The tested hypotheses were: a) the amount of external mycelium depends on the fungal species; b) the P levels affect diferentially each mycorrhizal species; c) the mycorrhizal effectiveness depends on the amount of external mycelium. Mycorrhizal stimulus on plant biomass occurred at P levels of 0, 25 and 200 mg kg-1. Mycorrhizal root colonization and total...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arbuscular mycorrhizal fungi; External mycelium; Soybean.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000300013

Soil biochemistry and microbial activity in vineyards under conventional and organic management at Northeast Brazil
Provedor de dados: Scientia Agricola
Autores: Freitas,Nicácio de Oliveira; Yano-Melo,Adriana Mayumi; Silva,Fábio Sérgio Barbosa da; Melo,Natoniel Franklin de; Maia,Leonor Costa.
The São Francisco Submedium Valley is located at the Brazilian semiarid region and is an important center for irrigated fruit growing. This region is responsible for 97% of the national exportation of table grapes, including seedless grapes. Based on the fact that organic fertilization can improve soil quality, we compared the effects of conventional and organic soil management on microbial activity and mycorrhization of seedless grape crops. We measured glomerospores number, most probable number (MPN) of propagules, richness of arbuscular mycorrhizal fungi (AMF) species, AMF root colonization, EE-BRSP production, carbon microbial biomass (C-MB), microbial respiration, fluorescein diacetate hydrolytic activity (FDA) and metabolic coefficient (qCO2). The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitis vinifera L.; Arbuscular mycorrhizal fungi; Semiarid; Soil microbial activity; Sustainable agriculture.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000200013

IMPACT OF CRUDE OIL ON FUNCTIONAL GROUPS OF CULTURABLE BACTERIA AND COLONIZATION OF SYMBIOTIC MICROORGANISMS IN THE Clitoria-Brachiaria RHIZOSPHERE GROWN IN MESOCOSMS
Provedor de dados: Acta Biológica Colombiana
Autores: ALARCÓN,Alejandro; GARCÍA-DÍAZ,Mariano; HERNÁNDEZ-CUEVAS,Laura Verónica; ESQUIVEL-COTE,Rosalba; FERRERA-CERRATO,Ronald; ALMARAZ-SUAREZ,Juan José; FERRERA-RODRÍGUEZ,Ofelia.
ABSTRACT This research evaluated the changes on populations of culturable N-fixing free bacteria (NFFB) and P-solubilizing bacteria (PSB), as well as on the root nodulation by native rhizobia, the root colonization and spore number of arbuscular mycorrhizal fungi (AMF), in the rhizosphere of Clitoria ternatea and Brachiaria brizantha grown in mesocosms contaminated with crude oil (0, 3000, 6000, 9000, and 12000 mg kg-1), for 240 days. After 24 h of soil contamination, the highest populations of NFFB and PSB (5.5 and 4.9 LogUFC, respectively) were found in control, and the lowest populations were obtained at 12000 mg kg-1 (5.1 and 4.2 LogUFC, respectively). In contrast, at 60 and 240 days, the control showed lower populations of NFFB and PSB (5.4 and 4.8...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arbuscular mycorrhizal fungi; Crude oil; N-fixing free bacteria; P-solubilizing bacteria; Root nodulation; Soil contamination.
Ano: 2019
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2019000200343

Root fungal associations in some non-orchidaceous vascular lithophytes
Provedor de dados: Acta Botanica Brasilica
Autores: Muthukumar,Thangavelu; Chinnathambi,Marimuthu; Priyadharsini,Perumalsamy.
ABSTRACT Plant roots in natural ecosystems are colonized by a diverse group of fungi among which the most common and widespread are arbuscular mycorrhizal (AM) and dark septate endophyte (DSE) fungi. Though AM and DSE fungal associations are well reported for terricolous plant species, they are rather poorly known for lithophytic plant species. In this study, we examined AM and DSE fungal association in 72 non-orchidaceous vascular plant species growing as lithophytes in Siruvani Hills, Western Ghats of Tamilnadu, India. Sixty-nine plant species had AM and 58 species had DSE fungal associations. To our knowledge, we report AM fungal association in 42 and DSE fungal association in 53 plant species for the first time. There were significant differences in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arbuscular mycorrhizal fungi; Dark septate endophyte fungi; Life cycle; Life-forms; Microsclerotia.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000300407

Biostimulation of inoculation with Glomus proliferum and application of humic acid in the in vitro growth of Lunularia cruciata
Provedor de dados: Acta Botanica Brasilica
Autores: Nobre,Camila Pinheiro; Huertas,Orlando Carlos Tavares; Tardin,José Rogério Figueira; Saggin Júnior,Orivaldo José; Fonseca,Henrique Manoel Apolónia Coutinho; Berbara,Ricardo Luis Louro.
In this study, we evaluated the growth of the liverwort Lunularia cruciata, inoculated or not with the arbuscular mycorrhizal fungi (AMF) Glomus proliferum (15 spores per Petri dish), in Strullu-Romand Variant (SRV) medium modified and enriched with humic acid (HA) at different concentrations (0, 20, 40 and 80 mg C L−1), as well as the sporulation of the AMF. We assessed the absolute growth rate (AGR) and relative growth rate (RGR) at inoculation, as well as at 7, 14, 21, 28, 43, 52 and 60 days after inoculation (DAI), whereas we assessed sporulation at 25, 43, 60 and 70 DAI. The main determinant of L. cruciata growth was the presence of AMF. With and without G. proliferum inoculation, respectively, the AGR peaked at 39 and 42 DAI, and the RGR was 0.0474...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arbuscular mycorrhizal fungi; Liverworts; Monoxenic cultures; Humic substances.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400017

Occurrence of arbuscular mycorrhizal fungi in soils of early stages of a secondary succession of Atlantic Forest in South Brazil
Provedor de dados: Acta Botanica Brasilica
Autores: Stürmer,Sidney Luiz; Klauberg Filho,Osmar; Queiroz,Maike Hering de; Mendonça,Margarida Matos de.
Arbuscular mycorrhizal fungi (AMF) species diversity and mycorrhizal inoculum potential were assessed in areas representative of stages of secondary succession in the Brazilian Atlantic Rain Forest. Within each stage - pioneer, 'capoeirinha' and 'capoeirão'- four transects were established and three soil samples were taken along each transect. The plant community was dominated by Pteridium aquilinium in the pioneer stage, while Dodonaea viscosa and P. aquilinium were co-dominants in the 'capoeirinha' stage. In capoeirão, Miconia cinnamomifolia was dominant followed by Euterpe edulis. Total spore number per 100 g soil was significantly larger in the 'capoeirinha' stage than in the other stages, although the number of viable spores was similar among stages....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glomerales; Arbuscular mycorrhizal fungi; Atlantic Rain Forest; Secondary plant succession; Species diversity.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062006000300002

Response of an endangered tree species from Caatinga to mycorrhization and phosphorus fertilization
Provedor de dados: Acta Botanica Brasilica
Autores: Oliveira,João Ricardo Gonçalves de; Silva,Eliene Matos e; Teixeira-Rios,Thaís; Melo,Natoniel Franklin de; Yano-Melo,Adriana Mayumi.
Schinopsis brasiliensis is an endangered tree species found in the Caatinga biome. It presents a characteristic slow development and difficult propagation, although it has been traditionally exploited in the region. Application of arbuscular mycorrhizal fungi (AMF) and phosphorus (P) fertilization may be beneficial to S. brasiliensis development at the seedling stage, which at the same time may help species conservation and the recovery of degraded areas in the Caatinga biome. We assessed the response of S. brasiliensis to AMF inoculation (Claroideoglomus etunicatum and Acaulospora longula) and P fertilization (0, 12, 24, and 48 mg dm−3 addition of P2O5). S. brasiliensis responded positively to both AMF inoculation and P fertilization. At low P...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arbuscular mycorrhizal fungi; Native plants; Nutrient concentration; Seedling production; Semiarid area.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000100094

Element storage in spores of Gigaspora margarita Becker &amp;amp; Hall measured by electron energy loss spectroscopy (EELS)
Provedor de dados: Acta Botanica Brasilica
Autores: Cruz,Andre Freire.
The storage structures of spores of Gigaspora margarita Becker &amp;amp; Hall, an arbuscular mycorrhizal fungus, were analyzed by a transmission electronic microscope (TEM) and electron energy loss spectroscopy (EELS). The spores were hydrated, cryofixed using high pressure freezing, submitted to freeze substitution, embedded and prepared for TEM observations. The cryotechniques revealed that the storage structures in the spores are composed of lipids, electron dense granules (EDG), protein bodies and glycogen particles. The EELS detected the presence of nitrogen (N) and carbon (C) in these storage structures and in Bacteria-like organisms (BLO). Some amount of P was detected in the vacuoles and in BLO. The TEM and EELS techniques indicate the presence of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arbuscular mycorrhizal fungi; EELS; Storage; Transmission electronic microscope.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062004000300007

Alterações microbiológicas, de fertilidade e de produtividade do arroz de terras altas em diferentes manejos de solo e água - DOI: 10.4025/actasciagron.v30i2.1788
Provedor de dados: Acta Scientiarum: Agronomy
Autores: Santos, Talles Eduardo Borges dos; UNESP, Ilha Solteira; Nakayama, Fernando Takayuki; UNESP, Ilha Solteira; Arf, Orivaldo; UNESP, Ilha Solteira; Cassiolato, Ana Maria Rodrigues; UNESP, Ilha Solteira.
O sistema de cultivo de arroz predominante no Brasil, o de terras altas, fica na dependência da precipitação pluvial e de sua distribuição. Determinadas práticas ou distúrbios, que atuam sobre o solo, levam a alterações que os microrganismos, por ser sensíveis, podem detectar. O trabalho objetivou estudar as alterações microbiológicas (carbono da biomassa microbiana (CBM)) e do CO2 (C-CO2) liberado, do quociente metabólico (qCO2) e micorrização), fertilidade do solo e produtividade do arroz de terras altas, cultivado sob diferentes manejos de solo e água. A cultivar utilizada foi a BRS Talento, e o delineamento experimental foi o de blocos casualizados, com quatro repetições. Os tratamentos foram arranjados em fatorial de três manejos de solo: plantio...
Palavras-chave: 5.01.03.05-9 Melhoramento Vegetal atividade microbiana; Plantio direto; Cultivo mínimo; Fungos micorrízicos arbusculares; Irrigação 5.01.03.05-9 Melhoramento Vegetal microbial activity; No-tillage; Minimum tillage; Arbuscular mycorrhizal fungi; Irrigation.
Ano: 2008
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/1788

Influence of edapho-climatic factors on the sporulation and colonization of arbuscular mycorrhizal fungi in two Amazonian native fruit species
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Oliveira,Arlem Nascimento de; Oliveira,Luiz Antonio de.
Arbuscular mycorrhizal fungi (AMF) colonization and spore numbers in the rhizosphere of two fruit species, Paullinia cupana Mart. and Theobroma grandiflorum Schum., growing in a terra firme ecosystem in Central Amazonia were studied from August 1998 to May 2000. Climatic and edaphic factors were also determined to investigate their influence on mycorrhizal variables. Soil pH, Al, Mn and effective cation exchange capacity exhibited seasonal variations during the investigation period. Temporal variations in mycorrhizal colonization levels and spore numbers occurred, indicating seasonality. Moreover, the patterns of mycorrhizal colonization levels and spore numbers for both host species were similar during the studied period. Mycorrhizal variables were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arbuscular mycorrhizal fungi; P. cupana; T. grandiflorum; Central Amazonia.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000300021

Evaluation of the mycelial network formed by arbuscular mycorrhizal hyphae in the rhizosphere of papaya and other plants under intercropping system
Provedor de dados: Brazilian Journal of Microbiology
Autores: Cruz,André Freire; Ishii,Takaaki; Matsumoto,Isao; Kadoya,Kazuomi.
An experiment was carried out under greenhouse conditions to observe the distribution of arbuscular mycorrhizal (AM) hyphae in the rhizosphere of papaya and other plants under intercropping system. Special acrylic root boxes with three compartments, separated by nylon mesh screens, were constructed. One outer compartment contained seedlings of papaya (Carica papaya L.) and other contained seedlings of bahiagrass (Paspalum notatum Flügge) or millet (Pennisetum glaucum L. R. Br.). The central compartment was inoculated with an AM fungus (Gigaspora margarita). In another experiment, the outer compartments were treated with 25% MeOH eluates of bahiagrass (BRE) and millet (MRE) root extracts. A control box, containning only papaya seedlings was also prepared....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hyphae; Root extracts; Papaya; Arbuscular mycorrhizal fungi.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000100015

Seasonality and host preference of arbuscular mycorrhizal fungi of five plant species in the inner Mongolia steppe, China
Provedor de dados: Brazilian Journal of Microbiology
Autores: Su,Yuan-Ying; Sun,Xin; Guo,Liang-Dong.
The seasonal change and host preference of arbuscular mycorrhizal (AM) colonization and community composition of five common plant species Agropyron cristatum, Anemarrhena asphodeloides, Cleistogenes squarrosa, Leymus chinensis, and Stipa grandis in the Inner Mongolia steppe were investigated. The AM root length colonization rates were different among the five plant species and were generally high in early (May and June) and late (September) growth seasons and low in August. A total of 18 AM fungal species representing five genera were isolated from rhizosphere soils of the five plant species, and most AM fungi had not host specificity, except that Acaulospora sp., Glomus constrictum, G. diaphanum and Glomus sp. showed a certain degree of host preference....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seasonal dynamics; Arbuscular mycorrhizal fungi; Diversity; Grassland.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000100008

Seasonal dynamics of arbuscular mycorrhizal fungi in plants of Theobroma grandiflorum Schum and Paullinia cupana Mart. of aN agroforestry system in Central Amazonia, Amazonas State, Brazil
Provedor de dados: Brazilian Journal of Microbiology
Autores: Oliveira,Arlem Nascimento de; Oliveira,Luiz Antonio de.
The seasonal dynamics of Arbuscular Mycorrhizal Fungi (AMF) was investigated in the rhizosphere of two fruit species in a terra firme (upland) ecosystem in Central Amazonia. Two host species (Theobroma grandiflorum and Paullinia cupana) and nine sampling months (August, September and December/1998, February, April, May and December/1999, February and May/2000) were studied in a completely randomized design, with five replications, set in a 2 x 9 factorial experiment. Soil (0-20 cm depth) and root samples were collected between August 1998 and May 2000. The mean percent colonization of AMF for both species reached maximal values in February and May 2000 (rainy season). In April and May 1999, February and May 2000 (rainy season) the highest AMF spore numbers...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arbuscular mycorrhizal fungi; Theobroma grandiflorum; Paullinia cupana; Agroforestry system; Central Amazonia.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822005000300011

Dominance of Paris-type morphology on mycothallus of Lunularia cruciata colonised by Glomus proliferum
Provedor de dados: Brazilian Journal of Microbiology
Autores: Fonseca,Henrique M.A.C.; Ferreira,Joana I.L.; Berbara,Ricardo L.L.; Zatorre,Natalia P.
Microscopic evidence confirms that L. cruciata hosting G. proliferum shows major anatomical traits (arbuscules, coils, arbusculate coils and vesicles) generally associated arbuscular mycorrhizal roots and the anatomical morphology of intra-thalli mycelium is predominantly of the Paris-type. Colonised L. cruciata showed a reduction of biomass when compared with axenic plants suggesting a drain of resources towards the fungus and depletion of nutrients required for optimum plant growth. The behaviour of mycothalli regarding available KH2PO4 indicates that the nutritional stress threshold for phosphorus (P) is above the residual amount of P already present in PhytagelTM and in plant inoculum. These raise the possibility that in certain circumstances the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arbuscular mycorrhizal fungi; Phosphorus; Arum-type; Liverwort; Monoxenic cultures.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000100016

Screening of efficient arbuscular mycorrhizal fungi for Azadirachta indica under nursery condition: a step towards afforestation of semi-arid region of western India
Provedor de dados: Brazilian Journal of Microbiology
Autores: Banerjee,K.; Gadani,M.H.; Srivastava,K.K.; Verma,Neelam; Jasrai,Y.T.; Jain,N.K.
To optimize nursery practices for efficient plant production procedures and to keep up to the ever growing demand of seedlings, identification of the most suitable species of arbuscular mycorrhizal fungi (AMF), specific for a given tree species, is clearly a necessary task. Sixty days old seedlings of Neem (Azadirachta indica A. Juss) raised in root trainers were inoculated with six species of AMF and a mixed inoculum (consortia) and kept in green house. Performances of the treatments on this tree species were evaluated in terms of growth parameters like plant height shoot collar diameter, biomass and phosphorous uptake capabilities. Significant and varied increase in the growth parameters and phosphorous uptake was observed for most of the AMF species...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arbuscular mycorrhizal fungi; Neem; Glomus mosseae; Glomus intraradices.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200039

Mycorrhiza influence on maize development under Cd stress and P supply
Provedor de dados: Brazilian Journal of Plant Physiology
Autores: Andrade,Sara A. L. de; Silveira,Adriana P. D. da.
The role of arbuscular mycorrhizal fungi (AMF) on cadmium (Cd) accumulation and on the possible attenuation of Cd stress was studied in maize plants (Zea mays L. var. Exceller). Plants inoculated or not with Glomus macrocarpum were exposed to Cd (0-20 µmol L-1), at two P levels (5 and 10 mg L-1) in the nutrient solution. The experiment was conducted in a hydroponic system, using a randomized 2 x 2 x 2 factorial design. The mycorrhiza-Cd interaction on plant growth, nutrients and Cd accumulation, AMF root colonization and on extra-radical mycelium was investigated. Mycorrhiza promoted plant growth whereas Cd addition reduced plant biomass production. No difference in plant Cd concentrations was found between mycorrhizal (M) and non-mycorrhizal (NM) plants,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arbuscular mycorrhizal fungi; Cd distribution; Extra-radical mycelium; Heavy metals; Peroxidase; Phosphorus.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202008000100005

Mycorrhization and saline stress response in Hyptis suaveolens
Provedor de dados: Ciência Rural
Autores: Souza,Marília Cristina Gomes de; Morais,Marciana Bizerra de; Andrade,Marcelo da Silva; Vasconcelos,Mayron Alves de; Sampaio,Silvana Saker; Albuquerque,Cynthia Cavalcanti de.
ABSTRACT: The objective of this study was to evaluate the physiological and biochemical mechanisms of adaptation of Hyptis suaveolens under osmotic stress due to salinity inoculations with a mycorrhizal fungal species. H. suaveolens seeds were germinated in polyethylene pots containing a substrate associated with or without arbuscular mycorrhizal fungi (AMF). After plant formation, treatments were treated with different salt concentrations (0.0, 35, 70, and 105 mM) and fungi (control and two types of AMF), totaling 12 treatments with three replicates. The experimental design used randomized blocks in a 4 x 3 factorial scheme, totaling 12 treatments with three replicates each. Salinity affected all measured physiological and biochemical variables, and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant activity; Abiotic stress; Salinity; Arbuscular mycorrhizal fungi.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000600402