SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

An overall evaluation of the resistance (R) and pathogenesis-related (PR) superfamilies in soybean, as compared with Medicago and Arabidopsis

SANTOS, M. de L.; ALVES, G. S. C.; COTTA, M. G.; FONSECA, F. C. A.; TOGAWA, R. C.; COSTA, M. M. do C.; ALVES, A. A.; MILLER, R. N. G.; SOUZA JUNIOR, M. T..

Tipo: Separatas

Palavras-chave: E guineensis; E oleifera; NBS-LRRs; Biotic stress.

Ano: 2017

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1085646

Wanderley-Nogueira,Ana C.; Belarmino,Luis C.; Soares-Cavalcanti,Nina da M.; Bezerra-Neto,João P.; Kido,Ederson A.; Pandolfi,Valesca; Abdelnoor,Ricardo V.; Binneck,Eliseu; Carazzole,Marcelo F.; Benko-Iseppon,Ana M..

Plants have the ability to recognize and respond to a multitude of pathogens, resulting in a massive reprogramming of the plant to activate defense responses including Resistance (R) and Pathogenesis-Related (PR) genes. Abiotic stresses can also activate PR genes and enhance pathogen resistance, representing valuable genes for breeding purposes. The present work offers an overview of soybean R and PR genes present in the GENOSOJA (Brazilian Soybean Genome Consortium) platform, regarding their structure, abundance, evolution and role in the plantpathogen metabolic pathway, as compared with Medicago and Arabidopsis. Searches revealed 3,065 R candidates (756 in Soybean, 1,142 in Medicago and 1,167 in Arabidopsis), and PR candidates matching to 1,261 sequences...

Comparative analysis of differentially expressed sequence tags of sweet orange and mandarin infected with Xylella fastidiosa

Palavras-chave: Pathogen response; Biotic stress; Bioinformatics; Glycine max; Medicago truncatula.

Ano: 2012

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000200007

Souza,Alessandra A. de; Takita,Marco A.; Coletta-Filho,Helvécio D.; Campos,Magnólia A.; Teixeira,Juliana E.C.; Targon,Maria Luísa P.N.; Carlos,Eduardo F.; Ravasi,Juliano F.; Fischer,Carlos N.; Machado,Marcos A..

The Citrus ESTs Sequencing Project (CitEST) conducted at Centro APTA Citros Sylvio Moreira/IAC has identified and catalogued ESTs representing a set of citrus genes expressed under relevant stress responses, including diseases such as citrus variegated chlorosis (CVC), caused by Xylella fastidiosa. All sweet orange (Citrus sinensis L. Osb.) varieties are susceptible to X. fastidiosa. On the other hand, mandarins (C. reticulata Blanco) are considered tolerant or resistant to the disease, although the bacterium can be sporadically detected within the trees, but no disease symptoms or economic losses are observed. To study their genetic responses to the presence of X. fastidiosa, we have compared EST libraries of leaf tissue of sweet orange Pêra IAC (highly...

Palavras-chave: ESTs; Citrus variegated chlorosis; Biotic stress; CitEST; Phytopathogen.

Ano: 2007

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000500024

Souza,Thais P.; Dias,Renata O.; Silva-Filho,Marcio C..

Abstract Sugarcane is one of the most important agricultural crops in the world. However, pathogen infection and herbivore attack cause constant losses in yield. Plants respond to pathogen infection by inducing the expression of several protein types, such as glucanases, chitinases, thaumatins, peptidase inhibitors, defensins, catalases and glycoproteins. Proteins induced by pathogenesis are directly or indirectly involved in plant defense, leading to pathogen death or inducing other plant defense responses. Several of these proteins are induced in sugarcane by different pathogens or insects and have antifungal or insecticidal activity. In this review, defense-related proteins in sugarcane are described, with their putative mechanisms of action, pathogen...

Desenvolvimento de marcadores associados à resistência do bicho-mineiro: seleção e validação de SNPs.

Palavras-chave: Defense-related protein; PR-protein; Biotic stress; Saccharum spp.

Ano: 2017

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572017000200360

Differential expression of genes identified from Poncirus trifoliata tissue inoculated with CTV through EST analysis and in silico hybridization

BAZIOLI, J. M.; GUIMARÃES, P. de S.; STRAZZA, B. A.; SCHENK, J. C. M.; PADILHA, L.; GUERREIRO-FILHO, O.; MALUF, M. P..

O objetivo deste estudo é o desenvolvimento de marcadores do tipo SNPs associados com a resistência ao bicho-mineiro em café. A estratégia principal utilizou as análises genômicas de microarranjo, para caracterização de expressão diferencial de genes-candidatos em plantas resistentes infestadas com o bicho-mineiro. Inicialmente, análises in silico de 2137 destes genes identificaram aqueles potencialmente relacionados com a especificidade da resposta de defesa da planta. Uma vez selecionados, o perfil de expressão de 22 genes foi confirmado por qRT-PCR em experimentos utilizando plantas resistentes e suscetíveis, infectadas pelo bicho-mineiro. Para busca de polimorfismos do tipo SNPs, que poderão ser utilizados como marcadores para seleção-assistida,...

Tipo: Anais e Proceedings de eventos

Palavras-chave: Seleção-assistida; Estresse biótico; Melhoramento molecular; Molecular breeding; Marker-assisted selection; Biotic stress.

Ano: 2019

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1113382

Cristofani-Yaly,Mariângela; Berger,Irving J.; Targon,Maria Luisa P.N.; Takita,Marco A.; Dorta,Sílvia de O.; Freitas-Astúa,Juliana; Souza,Alessandra A. de; Boscariol-Camargo,Raquel L.; Reis,Marcelo S.; Machado,Marcos A..

Citrus is the most important fruit crop in Brazil and Citrus tristeza virus (CTV) is considered one of the most important pathogens of citrus. Most citrus species and varieties are susceptible to CTV infection. However, Poncirus trifoliata, a close relative of citrus, is resistant to the virus. In order to better understand the responses of citrus plants to the infection of CTV, we constructed expressed sequence tag (EST) libraries with tissues collected from Poncirus trifoliata plants, inoculated or not with Citrus tristeza virus at 90 days after inoculation, grafted on Rangpur lime rootstocks. We generated 17,867 sequence tags from Poncirus trifoliata inoculated (8,926 reads) and not (8,941 reads) with a severe CTV isolate. A total of 2,782 TCs...

Entangled effects of allelic and clonal (genotypic) richness in the resistance and resilience of experimental populations of the seagrass Zostera noltii to diatom invasion

Palavras-chave: Citrus; Disease resistance; Citrus tristeza virus; Biotic stress.

Ano: 2007

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000500025

ArchiMer

Massa, Sonia I.; Paulino, Cristina M.; Serrao, Ester A.; Duarte, Carlos M.; Arnaud-haond, Sophie.

Background: The relationship between species diversity and components of ecosystem stability has been extensively studied, whilst the influence of the genetic component of biodiversity remains poorly understood. Here we manipulated both genotypic and allelic richness of the seagrass Zostera noltii, in order to explore their respective influences on the resistance of the experimental population to stress. Thus far intra-specific diversity was seldom taken into account in management plans, and restoration actions showed very low success. Information is therefore needed to understand the factors affecting resistance and resilience of populations. Results: Our results show a positive influence of both allelic and genotypic richness on the resistance of...

Tipo: Text

Palavras-chave: Allelic richness; Genotypic richness; Resistance; Resilience; Zostera noltii; Biotic stress; Seagrass.

Ano: 2013

URL: http://archimer.ifremer.fr/doc/00166/27748/25946.pdf

Gene expression analysis in Musa acuminata during compatible interactions with Meloidogyne incognita.

Boaventura, Verônica de Jesus; Ringenberg, Rudiney; Ledo, Carlos Alberto da Silva.

CASTAÑEDA, N. E. N.; ALVES, G. S. C.; ALMEIDA, R. M.; AMORIM, E. P.; FERREIRA, C. F.; TOGAWA, R. C.; COSTA, M. M. do C.; GRYNBERG, P.; SANTOS, J. R. P.; CARES, J. E.; MILLER, R. N. G..

Background and Aims: Endoparasitic root-knot nematodes (RKNs) ( Meloidogyne spp.) cause considerable losses in banana ( Musa spp.), with Meloidogyne incognita a predominant species in Cavendish sub-group bananas. This study investigates the root transcriptome in Musa acuminata genotypes 4297-06 (AA) and Cavendish Grande Naine (CAV; AAA) during early compatible interactions with M. incognita . Methods: Roots were analysed by brightfield light microscopy over a 35 d period to examine nematode penetration and morphological cell transformation. RNA samples were extracted 3, 7 and 10 days after inoculation (DAI) with nematode J2 juveniles, and cDNA libraries were sequenced using lllumina HiSeq technology. Sequences were mapped to the M. acuminata ssp....

Tipo: Separatas

Palavras-chave: Root-knot nematode.; Monocotyledons; Meloidogyne Incognita; Musa Acuminata.; Biotic stress; Transcriptome..

Ano: 2017

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1076414

Agronomy

The aim of this study was to evaluate the genetic dissimilarity among wild and domesticated species of Manihot for resistance to cassava green mite during the insect life cycle. Nine accessions of wild Manihot species, M. esculenta ssp. flabellifolia, M. esculenta ssp. peruviana, and M. carthaginensis ssp. glaziovii, and two clones of M. esculenta (Cigana Preta and Sacaí) were evaluated under laboratory conditions at 25 ± 1°C, 70 ± 10% RH, and a 12-h photophase. Daily observations during the mite life cycle stages (larva-adult) were recorded. The data were subjected to an analysis of variance, a Scott-Knott test (5%), and Singh criterion, cluster, and principal component analyses. The larval-adult period ranged from 5.53 to 7.01 days: the longest period...

Germination Ecology of Ivy-Leaved Morning-Glory: an Invasive Weed in Soybean Fields, Iran

Palavras-chave: Agronomia/ Fitossanidade biology; Cassava; Biotic stress; Green mite. Fitossanidade.

Ano: 2015

URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/19359

Planta Daninha

SIAHMARGUEE,A.; GORGANI,M.; GHADERI-FAR,F.; ASGARPOUR,R..

ABSTRACT: Ivy-leaved morning-glory (Ipomoea hederacea Jacq.) is an exotic species that is becoming an increasing problem in soybean fields of Golestan province, Iran. Because little information is available on the biology of this weed species in Iran, experiments were conducted to investigate the effects of different factors on seed germination and emergence of Ivy-leaved morning-glory. Maximum germination occurred at constant temperature of 20 oC (82%) and alternating temperature of 15/25 oC (94%). Germination was reduced with increasing salinity and drought stresses. Sodium chloride concentration and osmotic potential that inhibited 50% maximum germination were -1.64 and -1.03 MPa, respectively. Acidity was a limiting factor for the germination, due to...

Leaf spots in Eucalyptus benthamii in southern Brazil.

Palavras-chave: Biotic stress; Alternating temperatures; Exotic species; PH.

Ano: 2020

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100227

Microorganisms for wheat improvement under biotic stress and dry climate

TAMBARUSSI, E.; SOARES, I.; SANTOS, A. F. dos; AUER, C. G.; REZENDO, E.; COELHO, T.; AGUIAR, A. V. de.

Tipo: Separatas

Palavras-chave: Leaf disease; Doença de Planta; Fungo; Eucalyptus; Biotic stress.

Ano: 2018

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1097837

CIGR Journal

Haggag-AFBSC, Wafaa Mohamed.

Wheat is the most important grain crop, a main sustenance for a third of the world population. Biotic stress by diseases represents a serious risk to wheat production particularly under dry condition. In this work the use of plant beneficial microorganisms as bio elicitors to improve the productivity of two common wheat varieties (i.e. Gemmiza 10 and Sakha 93) were achieved. The Bio elicitors used are Streptomyces griseus, Trichoderma hamatum, Rhodotorula glutinis, Paenibacillus polymyxa, Bacillus subtilis, Pseudomonas putida, P. fluorescens reduced wheat diseases occurrence including rust, net blotches and powdery mildew in comparison with regular elicitors, as methyl jasmonate (MJ), chitosan (CHI), ascorbic acid and putrescein grown in new reclaimed...

New biotechnological tools to accelerate scab-resistance trait transfer to apple.

Palavras-chave: Yes Bio-elicitors; Biotic stress; Dry climate; Wheat.

Ano: 2019

URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5052

New biotechnological tools to accelerate scab-resistance trait transfer to apple

CUSIN, R.; REVERS, L. F.; MARASCHIN, F. dos S..

Apple is a fruit crop cultivated worldwide. Apple orchards are exposed to a diverse set of environmental and biological factors that affect the productivity and sustainability of the culture. Many of the efforts and costs for apple production rely on reducing the incidence of fungal diseases, and one of the main diseases is apple scab caused by the fungus Venturia inaequalis. The economic impact of scab on apple productivity has guided many breeding programs to search for cultivars resistant to apple scab. Introgression from wild relatives has been successful to some extent, and genetic engineering for resistant cultivars has even been employed. This review presents the techniques used to the present time to obtain pathogen-resistant apple cultivars and...

Tipo: Artigo de periódico

Palavras-chave: Transformation; Apple.; Maçã; Venturia Inaequalis.; Malus; Biotic stress; Fungal diseases of plants..

Ano: 2017

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1084291

Cusin,Roberta; Revers,Luís Fernando; Maraschin,Felipe dos Santos.

Abstract Apple is a fruit crop cultivated worldwide. Apple orchards are exposed to a diverse set of environmental and biological factors that affect the productivity and sustainability of the culture. Many of the efforts and costs for apple production rely on reducing the incidence of fungal diseases, and one of the main diseases is apple scab caused by the fungus Venturia inaequalis. The economic impact of scab on apple productivity has guided many breeding programs to search for cultivars resistant to apple scab. Introgression from wild relatives has been successful to some extent, and genetic engineering for resistant cultivars has even been employed. This review presents the techniques used to the present time to obtain pathogen-resistant apple...

Oil palm fatal yellowing (FY), a disease with an elusive causal agent.

Palavras-chave: Malus; Venturia inaequalis; Biotic stress; Transformation.

Ano: 2017

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572017000200305

Infoteca-e

BITTENCOURT, C. B.; LINS, P. de C.; BOARI, A. de J.; QUIRINO, B. F.; TEIXEIRA, W. G.; SOUZA JUNIOR, M. T..

Abstract: Fatal yellowing disease (FY) is a bud rot-type disease that severely affects oil palm plantations in Latin America. Since 1974, when it was first reported in Brazil, this disorder has been responsible for severe economic losses in the oil palm industry; and, for nearly 50 years, several studies have tried to identify its causal agent, without success. The etiological studies regarding FY in oil palm explored either biotic and abiotic stress scenarios, in a single or combined manner. Most recently, the hypothesis in favor of one biotic cause has lost some grounds to the abiotic one, mainly due to new insights regarding deficient aeration in the soil, which reduces the potential for oxy-reduction, causing changes in the ionic composition of the...

Tipo: Capítulo em livro técnico (INFOTECA-E)

Palavras-chave: Amarelecimento letal; Fatal yellowing; Dendê; Epidemiology; Palm oils; Abiotic stress; Biotic stress; Etiology; Elaeis; Tropical agriculture.

Ano: 2021

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1135533

Perdas econômicas geradas por estresses bióticos e abióticos na produção brasileira de soja no período 2016-2020.

Infoteca-e

HIRAKURI, M. H..

bitstream/item/223151/1/Circ-Tec-169.pdf

Tipo: Circular Técnica (INFOTECA-E)

Palavras-chave: Economia Agrícola; Economia da Produção; Perda da Produção; Soja; Stress; Soybeans; Abiotic stress; Biotic stress.

Ano: 2021

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1131745

Reactive oxygen species and antioxidant enzymes involved in plant tolerance to stress.