Cross-protection of cotton against Verticillium wilt by Verticillium nigrescens

Vagelas, Ioannis; Leontopoulos, Stefanos

doi:10.9755/ejfa.2015-04-047

Cited by 18 publications

(11 citation statements)

References 17 publications

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“…Interestingly, relative abundance of Gibellulopsis nigrescens in rhizosphere soil correlated with high yield, and in roots was linked with long rotations. G. nigrescens is considered a saprophyte and under some circumstances a weak pathogen [ 78 , 79 ], but it has been shown to provide protection against plant infection by virulent Verticillium pathogens [ 79 , 80 ], and similarly our evidence suggests it could represent a beneficial component of the plant microbiome.…”

Section: Discussionmentioning

confidence: 71%

Identification of microbial signatures linked to oilseed rape yield decline at the landscape scale

et al. 2021

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Background The plant microbiome plays a vital role in determining host health and productivity. However, we lack real-world comparative understanding of the factors which shape assembly of its diverse biota, and crucially relationships between microbiota composition and plant health. Here we investigated landscape scale rhizosphere microbial assembly processes in oilseed rape (OSR), the UK’s third most cultivated crop by area and the world's third largest source of vegetable oil, which suffers from yield decline associated with the frequency it is grown in rotations. By including 37 conventional farmers’ fields with varying OSR rotation frequencies, we present an innovative approach to identify microbial signatures characteristic of microbiomes which are beneficial and harmful to the host. Results We show that OSR yield decline is linked to rotation frequency in real-world agricultural systems. We demonstrate fundamental differences in the environmental and agronomic drivers of protist, bacterial and fungal communities between root, rhizosphere soil and bulk soil compartments. We further discovered that the assembly of fungi, but neither bacteria nor protists, was influenced by OSR rotation frequency. However, there were individual abundant bacterial OTUs that correlated with either yield or rotation frequency. A variety of fungal and protist pathogens were detected in roots and rhizosphere soil of OSR, and several increased relative abundance in root or rhizosphere compartments as OSR rotation frequency increased. Importantly, the relative abundance of the fungal pathogen Olpidium brassicae both increased with short rotations and was significantly associated with low yield. In contrast, the root endophyte Tetracladium spp. showed the reverse associations with both rotation frequency and yield to O. brassicae, suggesting that they are signatures of a microbiome which benefits the host. We also identified a variety of novel protist and fungal clades which are highly connected within the microbiome and could play a role in determining microbiome composition. Conclusions We show that at the landscape scale, OSR crop yield is governed by interplay between complex communities of both pathogens and beneficial biota which is modulated by rotation frequency. Our comprehensive study has identified signatures of dysbiosis within the OSR microbiome, grown in real-world agricultural systems, which could be used in strategies to promote crop yield.

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Section: Discussionmentioning

confidence: 71%

Identification of microbial signatures linked to oilseed rape yield decline at the landscape scale

et al. 2021

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“…The avirulent isolate F7 of Colletotrichum fragariae conferred full protection from the infection caused by C. acutatum and also enhanced plant resistance against Botrytis cinerea through the induction of plant defense responses. Similarly, the use of an attenuated Verticillium nigrescens isolate reduced cotton wilt caused by a virulent isolate of V. dahliae (Vagelas and Leontopoulos, 2015).…”

Section: The Results So Farmentioning

confidence: 99%

CRISPR-Cas for Fungal Genome Editing: A New Tool for the Management of Plant Diseases

et al. 2019

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“…Thus, the interest in the isolation, examination and use of plant tissues and agricultural waste rich in natural polyphenols extracted from various parts of plant species such as thyme, citrus and olive green tea has been expressed by many researchers [59][60][61][62][63][64][65][66][67][68][69][70][71][72][73]. This interest is strongly enhanced since several microorganisms such as fungi, bacteria, viruses, etc., interact in the natural environment with plants [74][75][76] and by them shelves [77] affecting growth and development [78,78,79].…”

Section: Discussionmentioning

confidence: 99%

Potential Synergistic Action of Liquid Olive Fruit Polyphenol Extract with Aqueous Extracts of Solid Wastes of Pomegranate or/and Orange Juice Industry as Organic Phyto-protective Agents against Important Plant Pathogens - Part 1 (in vitro Studies)

Leontopoulos¹,

Mitsagga²,

Giavasis³

et al. 2020

ujar

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Cross-protection of cotton against Verticillium wilt by Verticillium nigrescens

Cited by 18 publications

References 17 publications

Identification of microbial signatures linked to oilseed rape yield decline at the landscape scale

Identification of microbial signatures linked to oilseed rape yield decline at the landscape scale

CRISPR-Cas for Fungal Genome Editing: A New Tool for the Management of Plant Diseases

Potential Synergistic Action of Liquid Olive Fruit Polyphenol Extract with Aqueous Extracts of Solid Wastes of Pomegranate or/and Orange Juice Industry as Organic Phyto-protective Agents against Important Plant Pathogens - Part 1 (in vitro Studies)

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