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| Registros recuperados: 27 | |
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| 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... |
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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 |
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| 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 |
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| 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 |
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| 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 |
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| Cruz,Andre Freire. |
| The storage structures of spores of Gigaspora margarita Becker & 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 |
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| 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... |
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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 |
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| 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... |
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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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| Registros recuperados: 27 | |
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