The beneficial root endophyte Piriformospora indica reduces egg density of the soybean cyst nematode

Bajaj, Ruchika; Hu, Weiming; Huang, Yinyin; Chen, Senyu; Prasad, Ram; Varma, Ajit; Bushley, Kathryn E.

doi:10.1016/j.biocontrol.2015.05.021

Cited by 37 publications

(16 citation statements)

References 38 publications

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“…The use of beneficial fungi associated with plants that may confer increased resistance or tolerance to nematodes could provide an alternative to chemical applications for their control (Cabanillas et al 1988;Hallmann and Sikora 1996;Latch 1993;Martinez-Beringola et al 2013;Mendoza and Sikora 2009;Tian et al 2014;Waweru et al 2013). Certain beneficial strains of Fusarium spp., Pochonia chlamydosporia, Phialemonium inflatum, Piriformospora indica, and Chaetomium globosum, have been reported to have antagonistic effects on nematodes while being present in plants as endophytes (Bajaj et al 2015;Larriba et al 2015;Martinuz et al 2015;Yan et al 2011;Zhou et al 2016;Zhou et al 2018).…”

mentioning

confidence: 99%

Tapping Into the Cotton Fungal Phytobiome for Novel Nematode Biological Control Tools

Zhou

Verma

Wheeler

et al. 2020

Phytobiomes Journal

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A number of fungi have been shown to have negative effects on plant-parasitic nematodes. Most of these fungi have been isolated from soil, plant roots, or nematodes themselves. Fungi associated with crops can provide a diverse pool of candidates to test for antagonistic effects against plant parasites and other stressors. We used a hierarchical two-tiered approach to evaluate the efficacy and repeatability of 55 strains of fungi originally isolated as foliar facultative endophytes from upland cotton (Gossypium hirsutum) along with one commercial isolate of Beauveria bassiana for in planta antagonistic effects on root-knot nematodes (Meloidogyne incognita). All fungi were inoculated to cotton using a seed treatment. The number of root galls was quantified 3 weeks after egg inoculation of cotton seedlings. The majority of the fungi tested reduced the number of root galls relative to those on untreated control plants. To assess repeatability, 22 strains that exhibited the strongest reductions in gall numbers were further tested in replicate follow-up assays. Ninety-five percent (21/22) of these retested strains significantly reduced galling in the follow-up assay. Strains that reduced galling the most belonged to the genera Alternaria, Chaetomium, Cladosporium, Diaporthe, Epicoccum, Gibellulopsis, and Purpureocillium. On the contrary, three strains in the genera Alternaria and Curvularia significantly increased gall numbers. Our results indicate that a large proportion of the fungal strains originally isolated from cotton as naturally occurring foliar facultative endophytes are capable of reducing root-knot nematode infection when applied back to the plant as a seed treatment. These findings help establish a rich pool of candidate fungi for further evaluation as novel biological control tools against root-knot nematodes in cotton and other plants.

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mentioning

confidence: 99%

Tapping Into the Cotton Fungal Phytobiome for Novel Nematode Biological Control Tools

Zhou

Verma

Wheeler

et al. 2020

Phytobiomes Journal

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“…Linoleic acid and several other chlorinated aliphatic compounds from Lachnum papyraceum were reported to have nematicidal and even antimicrobial properties, therefore supporting the idea that soil microbial communities are interdependent and strongly interacting (Anke et al, 1995). One compound may have multiple effects on several soil inhabitants.…”

Section: Journal Of Nematologymentioning

confidence: 85%

“…The same fungus was first isolated in Kenya as a tomato endophyte and several groups from China and Europe have since investigated its potential as a nematode biocontrol agent. Endophytes can be beneficial to plants against pests like SCN both directly and indirectly (Bajaj et al, 2015;Daneshkhah et al, 2013). In fact, this particular strain of F. oxysporum was subjected to submerged fermentation and the culture broth was tested on a diverse array of nematodes belonging to different ecological niches and was found to have negative effects on almost all of them except for fungivores (Hallmann and Sikora, 1996).…”

Section: Journal Of Nematologymentioning

confidence: 99%

“…Therefore, an egg-parasitic fungus needs to produce chitinases, collagenases and carboxypeptidases while J2 parasites would primarily have to produce collagenases, other carboxypeptidases and Carbohydrate-Active enZymes (CAZymes) (Larriba et al, 2014;Page et al, 2014). Some predatory fungi also produce small molecule acids that are detrimental to nematodes (Anke et al, 1995;Stadler et al, 1993). Similar tactics are used by egg and J2 parasites as well.…”

Section: Journal Of Nematologymentioning

confidence: 99%

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Fungal communities associated with Heterodera glycines and their potential in biological control: a current update

Haarith

Bushley

Chen

2020

Journal of Nematology

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The soybean cyst nematode (SCN) is the most important pest on soybean, a major crop worldwide. The SCN is considered both parasitic and pathogenic as it derives nutrition from the host and manipulates host physiology to do so. Currently, there are no commercially available chemicals that are specific, environmentally safe and cost effective to control SCN levels. Crop rotation, use of host resistance and other cultural practices remain the main management strategies. The need for bioprospecting other methods of controlling SCN is paramount, and fungi show promise in that respect. Several studies have evaluated fungi and fungal products as biocontrol options against plant-parasitic nematodes. This review discusses fungal genera isolated from the SCN with potential for use as biocontrol agents and the effects of their secondary metabolites on various stages of SCN development. The review also summarizes efforts to control SCN using soil amendments that could potentially impact fungal communities in the soil.

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“…In soybeans diverse communities of fungal endophytes can be found, and several of these endophytes have plant growth-promoting capabilities and enhance, for example, soybean growth in nickel-or copper-contaminated soils by reducing the levels of stressrelated phytohormones such as abscisic acid and jasmonic acid [103]; or increase glutathione activities and thereby reduce oxidative stress [104]. The inoculation of soybean plants with fungal endophytes can also lead to higher shoot biomasses, chlorophyll contents, and photosynthetic rates compared to noninoculated soybeans under salt stress and decrease the abundances of SCN in soils [105].…”

Section: Symbiosis With Endophytic Bacteria or Fungimentioning

confidence: 99%

Beneficial Plant Microbe Interactions and Their Effect on Nutrient Uptake, Yield, and Stress Resistance of Soybeans

Kafle¹,

Garcia²,

Peta³

et al. 2019

Soybean - Biomass, Yield and Productivity

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Plants are meta-organisms that are associated with complex microbiomes. Many of the microorganisms that reside on plant surfaces (epiphytes) or within plant tissues (endophytes) do not cause any plant diseases but often contribute significantly to the nutrient supply of their host plant and can help the plant to overcome a variety of biotic or abiotic stresses. The yield potential of any plant depends not only on successful plant traits that improve, for example, the adaptation to low input conditions or other stressful environments but also on the plant microbiome and its potential to promote plant growth under these conditions. There is a growing interest to unravel the mechanisms underlying these beneficial plant microbe interactions because the activities of these microbial communities are of critical importance for plant growth under abiotic and biotic stresses and could lead to the development of novel strategies to improve yields and stress resistances of agronomically important crops. In this chapter, we summarize our current understanding of the beneficial interactions of soybean plants with arbuscular mycorrhizal fungi, nitrogen-fixing rhizobia, and fungal and bacterial endophytes and identify major knowledge gaps that need to be filled to use beneficial microbes to their full potential.

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The beneficial root endophyte Piriformospora indica reduces egg density of the soybean cyst nematode

Cited by 37 publications

References 38 publications

Tapping Into the Cotton Fungal Phytobiome for Novel Nematode Biological Control Tools

Tapping Into the Cotton Fungal Phytobiome for Novel Nematode Biological Control Tools

Fungal communities associated with Heterodera glycines and their potential in biological control: a current update

Beneficial Plant Microbe Interactions and Their Effect on Nutrient Uptake, Yield, and Stress Resistance of Soybeans

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