Effect of endophytic fungus<i>Chaetomium globosum</i>ND35 on the growth and resistance to drought of winter wheat at the seedling stage under water stress

Guoqiang, 丛国强 Cong; Chenglin, 尹成林 Yin; Bangling, 何邦令 He; Ling, 李玲 Li; Kexiang, 高克祥 Gao

doi:10.5846/stxb201401200153

Cited by 4 publications

(4 citation statements)

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“…This fungus has been reported to be useful as a bio-control agent against a broad range of pathogens or insect pests [44,45]. Moreover, its effect on wheat seedlings under drought conditions has also been reported [46]. Therefore, in addition to these reports, based on the results of the current study, we suggest that C. globosum may be useful in conferring resistance to biotic stress as well as tolerance to abiotic stress to wheat seedlings.…”

Section: Discussionsupporting

confidence: 70%

Fungal endophytes from salt-adapted plants confer salt tolerance and promote growth in wheat (Triticum aestivum L.) at early seedling stage

Manjunatha

Sivasithamparam

et al. 2022

Microbiology

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With increasing human global population, increased yield under saline conditions is a desirable trait for major food crops. Use of endophytes, isolated from halophytic hosts, seems to be an exciting approach for conferring salt tolerance to a salt-sensitive crop. Therefore, in the current study, fungal endophytes were isolated from halophytic plants’ roots and their ability to withstand in vitro salt stress was evaluated. The fungal endophytes could withstand up to 1M NaCl concentrations and this tolerance was independent of their host or tissue source. When inoculated on salt-sensitive wheat seeds/seedlings, several of the endophytes showed a positive impact on germination and biomass-related parameters upon salt stress, both in vitro and under glasshouse conditions. One of the isolates from dicot plants (identified as Microsphaeropsis arundinis) could successfully colonize wheat and promote its growth under salt and no-salt conditions. Amongst the fungal isolates that are known to be natural endophytes of wheat, Chaetomium globosum was the best performing isolate and has previously been reported to be an effective biocontrol agent. Based on the results of our preliminary study, we suggest that these fungal endophytes could prove beneficial for enhancing the salt stress tolerance of wheat crop.

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Section: Discussionsupporting

confidence: 70%

Fungal endophytes from salt-adapted plants confer salt tolerance and promote growth in wheat (Triticum aestivum L.) at early seedling stage

Manjunatha

Sivasithamparam

et al. 2022

Microbiology

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“…Root elongation can help plants cope with drought stress by enabling them to penetrate through hardpan soil, thereby improving their access to water and nutrients during periods of drought stress ( 63 , 64 ). Moreover, multiple Chaetomium species have been shown to promote drought resistance in various plants, including maize ( 65 ), wheat ( 66 ), and rice ( 67 ), suggesting the potential beneficial role of Chaetomium enrichment in rhizospheric mycobiomes might be more general.…”

Section: Discussionmentioning

confidence: 99%

Drought-induced assembly of rhizosphere mycobiomes shows beneficial effects on plant growth

Pan,

Liu,

Zhang

et al. 2024

mSystems

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Beneficial interactions between plants and rhizosphere fungi can enhance plant adaptability during drought stress. However, harnessing these interactions will require an in-depth understanding of the response of fungal community assembly to drought. Herein, by using different varieties of wheat plants, we analyzed the drought-induced changes in fungal community assembly in rhizosphere and bulk soil. We demonstrated that drought significantly altered the fungal communities, with the contribution of species richness to community beta diversity increased in both rhizosphere and bulk soil compartments during drought stress. The stochastic processes dominated fungal community assembly, but the relative importance of deterministic processes, mainly homogeneous selection, increased in the drought-stressed rhizosphere. Drought induced an increase in the relative abundance of generalists in the rhizosphere, as opposed to specialists, and the top 10 abundant taxa that enriched under drought conditions were predominantly generalists. Notably, the most abundant drought-enriched taxon in rhizosphere was a generalist, and the corresponding Chaetomium strain was found capable of improving root length and activating ABA signaling in wheat plants through culture-based experiment. Together, these findings provide evidence that host plants exert a strong influence on rhizospheric fungal community assembly during stress and suggest the fungal communities that have experienced drought have the potential to confer fitness advantages to the host plants. IMPORTANCE We have presented a framework to integrate the shifts in community assembly processes with plant-soil feedback during drought stress. We found that environmental filtering and host plant selection exert influence on the rhizospheric fungal community assembly, and the re-assembled community has great potential to alleviate plant drought stress. Our study proposes that future research should incorporate ecology with plant, microbiome, and molecular approaches to effectively harness the rhizospheric microbiome for enhancing the resilience of crop production to drought.

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“…Chaetomium globosum has been reported to induce resistance of the host plants against biotic or abiotic stresses. Examples include the resistance of cotton against Verticillium dahliae ( Zhang et al, 2016 ) through induced expression of resistance-related genes (β-1, 3-glucanase, POD, PPO, and PAL), oilseed rape against Plasmodiophora brassicae through improved enzymatic activity of PAL, POD, and PPO ( Yin, 2014 ), and wheat against drought stress through induced expression of the wzy 2 gene ( Cong et al, 2015 ). Similar results were obtained on other biocontrol agents, such as the bacterium Stenotrophomonas rhizophila (SR80), which could induce resistance of wheat against F. pseudograminearum via activating plant defense signaling pathways ( Liu et al, 2020 ).…”

Section: Discussionmentioning

confidence: 99%

“…For example, the yield per plant of sweet potato treated with C. globosum increased four-fold, and the root vigor, chlorophyll content, root length, and plant height were enhanced ( Meng, 2009 ; Gao, 2012 ; Mi, 2012 ). C. globosum can improve the defense enzyme activity of plants under adversity stress and stimulate the expression of resistance-associated genes, thus inducing plant systemic resistance ( Yin, 2014 ; Cong et al, 2015 ; Zhang et al, 2016 ). Moreover, it has been reported that the application of C. globosum agents can significantly increase the content of organic matter, nitrate nitrogen, and ammonia nitrogen, and the activity of soil urease, sucrase, and alkaline phosphatase, as well as affect the distribution of bacterial communities in the soil, and increase the number and diversity of bacteria, thus promoting the growth of Catalpa bungei and Malus hupehensis seedlings ( Song et al, 2015 ; Li, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

Biological control of Fusarium crown rot of wheat with Chaetomium globosum 12XP1-2-3 and its effects on rhizosphere microorganisms

Feng

et al. 2023

Front. Microbiol.

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Chaetomium globosum is a common plant endophytic fungi that exhibits great biocontrol potential in plant disease. Fusarium crown rot (FCR) is an important disease in wheat that seriously threatens wheat production worldwide. The control effect of C. globosum against wheat FCR remains unclear. In this study, we introduced an identified C. globosum 12XP1-2-3 and tested its biological control potential against wheat FCR. The hypha and fermentation broth exhibited an antagonistic effect against Fusarium pseudograminearum. Results from indoor experiments showed that C. globosum 12XP1-2-3 might delay the onset of symptoms of brown stem base and significantly reduced the disease index (37.3%). Field trials showed that wheat seeds coated with a spore suspension of 12XP1-2-3 grew better than the control seeds, had control effects of 25.9–73.1% on FCR disease, and increased wheat yield by 3.2–11.9%. Analysis of rhizosphere microorganisms revealed that seeds coated with C. globosum (‘Cg’ treatment) had a greater effect on fungal rather than on bacterial alpha diversity and may improve the health state of rhizosphere microorganisms, as reflected by the significantly increased fungal Shannon index at Feekes 11 and the increased complexity of the bacterial co-occurrence network but decreased complexity of the fungal network. Moreover, the accumulation of beneficial bacteria such as Bacillus and Rhizobium at Feekes 3, and Sphingomonas at Feekes 7 in the ‘Cg’ treatment may be the important contributions to healthier wheat growth state, significantly reduced relative abundance of Fusarium at Feekes 11, and reduced occurrence of FCR disease. These results provide a basis for further research on the mechanism of action of C. globosum and its application in the biological control of FCR in the field.

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Effect of endophytic fungusChaetomium globosumND35 on the growth and resistance to drought of winter wheat at the seedling stage under water stress

Cited by 4 publications

References 0 publications

Fungal endophytes from salt-adapted plants confer salt tolerance and promote growth in wheat (Triticum aestivum L.) at early seedling stage

Fungal endophytes from salt-adapted plants confer salt tolerance and promote growth in wheat (Triticum aestivum L.) at early seedling stage

Drought-induced assembly of rhizosphere mycobiomes shows beneficial effects on plant growth

Biological control of Fusarium crown rot of wheat with Chaetomium globosum 12XP1-2-3 and its effects on rhizosphere microorganisms

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