Colonisation of seminal roots of wheat and barley by egg-parasitic nematophagous fungi and their effects on Gaeumannomyces graminis var. tritici and development of root-rot

Monfort, Elena; López-Llorca, Luis Vicente; Jansson, H.‐B.; Salinas, J.; Park, J.O.; Sivasithamparam, Krishnapillai

doi:10.1016/j.soilbio.2004.11.019

Cited by 75 publications

(63 citation statements)

References 19 publications

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“…É possível que o resíduo com P. chlamydosporia var. chlamydosporia tenha promovido o crescimento das plantas de alface após o transplantio das mudas para os vasos, pois alguns isolados de P. chlamydosporia atuam como promotores de crescimento da planta, como observado em trigo, tomate e cevada (Monfort et al, 2005;Dallemolle-Giaretta, 2008;Marciá-Vicente et al, 2009). Além disso, o fungo pode colonizar endofítica e externamente a rizosfera de plantas, a exemplo da cevada e do tomateiro Lopez-Llorca et al, 2002;Dallemolle-Giaretta, 2008), o que aumenta a absorção de nutrientes para a planta.…”

Section: Resultsunclassified

Resíduo da produção de Pochonia chlamydosporia no desenvolvimento de mudas e plantas de alface

Viggiano

Freitas

Ferreira

2012

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar o efeito de subproduto do processo de produção de Pochonia chlamydosporia var. chlamydosporia no desenvolvimento de mudas e plantas de alface. Esse subproduto, um resíduo constituído de arroz que continha propágulos do fungo, foi adicionado em diferentes concentrações (0, 2 e 4% volume de resíduo:volume de substrato) a três tipos de substratos para mudas (formulado, comercial e fibra de coco). Sementes de alface foram semeadas em bandejas de isopor que continham os diferentes substratos enriquecidos com o resíduo. As mudas de alface foram transplantadas para vasos com o substrato solo e areia na proporção 1:1 (v:v), 28 dias após a semeadura. Todos os tipos de substratos e doses do resíduo apresentaram interação significativa para todas as variáveis relacionadas ao desenvolvimento das mudas e das plantas de alface. O maior desenvolvimento das mudas ocorreu na testemunha (sem o resíduo) dos substratos. Entretanto, após o transplantio das mudas para os vasos, as doses de resíduo até 4 e 2% v:v -nos substratos formulado e comercial, respectivamente -foram as que promoveram o maior desenvolvimento das plantas. A utilização de até 2% v:v do resíduo nos substratos formulado e comercial é viável e não prejudica o desenvolvimento de plantas de alface.Termos para indexação: Lactuca sativa, controle biológico, fungos nematófagos, reciclagem, substratos. Residue from the production of Pochonia chlamydosporia in the development of lettuce seedlings and plantsAbstract -The objective of this work was to evaluate the effect of a by-product of the production process of Pochonia chlamydosporia var. chlamydosporia in the development of lettuce seedlings and plants. This by-product, a residue made up of rice containing propagules of the fungus, was added at different concentrations (0, 2, and 4% volume of residue:volume of substrate) to three types of substrates for seedlings (formulated, commercial, and coconut fiber). Lettuce seeds were sown in polystyrene trays containing the different substrates enriched with the residue. The lettuce seedlings were transplanted into pots containing soil and sand substrate at the proportion 1:1 (v:v), 28 days after sowing. All types of substrates and residue levels showed a significant interaction for all variables related to the development of lettuce seedlings and plants. The highest development of seedlings occurred in the control treatment (no residue) of the substrates. However, after transplanting the seedlings into the pots, the residue levels of up to 4 and 2% v:v -in the formulated and commercial substrates, respectively -promoted the highest plant growth. The use of up to 2% v:v of the residue on the formulated and commercial substrates is viable and does not affect the development of lettuce plants.

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Section: Resultsunclassified

Resíduo da produção de Pochonia chlamydosporia no desenvolvimento de mudas e plantas de alface

Viggiano

Freitas

Ferreira

2012

Pesq. agropec. bras.

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“…Interestingly, this fungus promotes plant growth in barley (Hordeum vulgare) (Macia-Vicente et al, 2009b), wheat (Triticum aestivum) (Monfort et al, 2005), tomato (Solanum lycopersicum) (Escudero and Lopez-Llorca, 2012), lettuce (Lactuca sativa) (Dias-Arieira et al, 2011) and pistachio (Pistacia vera) (Ebadi et al, 2009). P. chlamydosporia colonizes the rhizoplane of crop plants, especially cereals, forming abundant chlamydospores (Bordallo et al, 2002;Kerry, 2000).…”

Section: Introductionmentioning

confidence: 99%

Sequencing and functional analysis of the genome of a nematode egg-parasitic fungus, Pochonia chlamydosporia

Larriba

Jaime

Carbonell-Caballero

et al. 2014

Fungal Genetics and Biology

106

109

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Pochonia chlamydosporia is a worldwide-distributed soil fungus with a great capacity to infect and destroy the eggs and kill females of plant-parasitic nematodes. Additionally, it has the ability to colonize endophytically roots of economically-important crop plants, thereby promoting their growth and eliciting plant defenses. This multitrophic behavior makes P. chlamydosporia a potentially useful tool for sustainable agriculture approaches. We sequenced and assembled ~41 Mb of P. chlamydosporia genomic DNA and predicted 12,122 gene models, of which many were homologous to genes of fungal pathogens of invertebrates and fungal plant pathogens. Predicted genes (65%) were functionally annotated according to Gene Ontology, and 16% of them found to share homology with genes in the Pathogen Host Interactions (PHI) database. The genome of this fungus is highly enriched in genes encoding hydrolytic enzymes, such as proteases, glycoside hydrolases and carbohydrate esterases. We used RNA-Seq technology in order to identify the genes expressed during endophytic behavior of P. chlamydosporia when colonizing barley roots. Functional annotation of these genes showed that hydrolytic enzymes and transporters are expressed during endophytism. This structural and functional analysis of the P. chlamydosporia genome provides a starting point for understanding the molecular mechanisms involved in the multitrophic lifestyle of this fungus. The genomic information provided here should also prove useful for enhancing the capabilities of this fungus as a biocontrol agent of plant-parasitic nematodes and as a plant growth-promoting organism.

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“…Endophytic fungi have frequently been reported to be associated with crop plants, including wheat (Triticum aestivum), wild barley (Hordeum brevisubulatum and Hordeum bogdanii), soya bean (Glycine max), and maize (Zea mays) (6,9,11,13,21,26,27,33,36,67). Some of the endophytic fungi in these crops conferred resistance of the plant to insect or fungal pathogens (55).…”

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confidence: 99%

Identity, Diversity, and Molecular Phylogeny of the Endophytic Mycobiota in the Roots of Rare Wild Rice ( Oryza granulate ) from a Nature Reserve in Yunnan, China

Youxiang

Zhang

Lin

et al. 2010

Appl Environ Microbiol

127

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Colonisation of seminal roots of wheat and barley by egg-parasitic nematophagous fungi and their effects on Gaeumannomyces graminis var. tritici and development of root-rot

Cited by 75 publications

References 19 publications

Resíduo da produção de Pochonia chlamydosporia no desenvolvimento de mudas e plantas de alface

Resíduo da produção de Pochonia chlamydosporia no desenvolvimento de mudas e plantas de alface

Sequencing and functional analysis of the genome of a nematode egg-parasitic fungus, Pochonia chlamydosporia

Identity, Diversity, and Molecular Phylogeny of the Endophytic Mycobiota in the Roots of Rare Wild Rice ( Oryza granulate ) from a Nature Reserve in Yunnan, China

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