An Ecological Insight into the Multifaceted World of Plant-Endophyte Association

Mishra, Sushma; Bhattacharjee, Annapurna; Sharma, Shilpi

doi:10.1080/07352689.2021.1901044

Cited by 45 publications

(21 citation statements)

References 136 publications

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“…Our findings are supported by the view that endophytes induce the deposition of phenolic compounds and the expression of defense-related enzymes such as peroxidases, catalases, etc. Similar to our findings [17], it was observed that joint formulation of endophytic microflora B. amyloliquefaciens and P. fluorescens amplified plant defense-based enzymes and antioxidants in formulation-treated plants, in contrast to the non-inoculated control. The discrete relationship between the formulation concentration and biochemical response, which was not identified by correlation analysis, was quantified by applying the principal component analysis.…”

Section: Discussionsupporting

confidence: 91%

“…Some other scanty studies on biological remedies of scabs have been conducted but these investigations have targeted the primary infection causing ascospores (overwintering) in litter and not the actively multiplying disease on canopy [15,16]. While apple endophytes have been used widely against apple scab in Germany, Belgium, the Netherlands, and Canada [17], the non-availability of convenient germplasm in these areas has limited such studies; in addition, these investigations have tested the fungal endophytes, which could face a serious challenge in the context of the changing climate scenario of the Jammu and Kashmir state. The endophytes in general are interesting entities for understanding the plant microbe interfaces that augment plant development and protect it from phytopathogens [18].…”

Section: Introductionmentioning

confidence: 99%

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Bacterial Endophyte Community Dynamics in Apple (Malus domestica Borkh.) Germplasm and Their Evaluation for Scab Management Strategies

Padder

Mansoor

Bhat

et al. 2021

JoF

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The large genetic evolution due to the sexual reproduction-mediated gene assortments and propensities has made Venturia inaequalis (causing apple scab) unique with respect to its management strategies. The resistance in apple germplasm against the scab, being controlled for by more than fifteen genes, has limited gene alteration-based investigations. Therefore, a biological approach of bacterial endophyte community dynamics was envisioned across the apple germplasm in context to the fungistatic behavior against V. inaequalis. A total of 155 colonies of bacterial endophytes were isolated from various plant parts of the apple, comprising 19 varieties, and after screening for antifungal behavior followed by morphological, ARDRA, and sequence analysis, a total of 71 isolates were selected for this study. The alpha diversity indices were seen to fluctuate greatly among the isolation samples in context to microflora with antifungal behavior. As all the isolates were screened for the presence of various metabolites and some relevant genes that directly or indirectly influence the fungistatic behavior of the isolated microflora, a huge variation among the isolated microflora was observed. The outstanding isolates showing highest percentage growth inhibition of V. inaequalis were exploited to raise a bio-formulation, which was tested against the scab prevalence in eight apple varieties under controlled growth conditions. The formulation at all the concentrations caused considerable reductions in both the disease severity and disease incidence in all the tested apple varieties. Red Delicious being most important cultivar of the northwestern Himalayas was further investigated for its biochemical behavior in formulation and the investigation revealed different levels of enzyme production, chlorophyll, and sugars against the non-inoculated control.

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Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Bacterial Endophyte Community Dynamics in Apple (Malus domestica Borkh.) Germplasm and Their Evaluation for Scab Management Strategies

Padder

Mansoor

Bhat

et al. 2021

JoF

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“…Rice plants interact with a wide range of microorganisms, including symbionts and pathogens. To discern beneficial microbes from pathogenic microbes, rice plants have employed various receptors that are able to recognize bioactive signals secreted by microor-ganisms [79,80]. Although the molecular studies on the crosstalk interaction between rice plants and Pantoea are still in a nascent stage, some studies on the molecular interactions between rice plants and other microbes have shown promising results.…”

Section: Receptors and Signalling Pathways For Recognition Of Microbes In Rice Plantsmentioning

confidence: 99%

Associations of Pantoea with Rice Plants: As Friends or Foes?

et al. 2021

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Pantoea species are gram-negative bacteria from the Enterobacteriaceae family, generally associated with plants, either as epiphytes or as pathogens. In the last decade, Pantoea species are being regarded as re-emerging pathogens that are the causal agents of various diseases in rice plants. Inherently, they are also known to be opportunistic plant symbionts having the capacity to enhance systemic resistance and increase the yield of rice plants. It is unclear how they can express both beneficial and pathogenic traits, and what factors influence and determine the outcome of a particular Pantoea–rice plant interaction. This review aims to compare the characteristics of rice plant-beneficial and pathogenic strains belonging to the Pantoea species and gain new insights, enabling distinction among the two types of plant–microbe interactions.

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“…Over this lengthy span of evolution, symbiotic microbes might have played a major role within the hosts to overcome the environmental changes. The symbiotic fungi or bacteria that live asymptomatically within a healthy plant tissue are called endophytes, and normally, these can provide benefits to their host in contrast to parasites (Khare et al, 2018;Sabra et al, 2018;Afzal et al, 2019;Mishra et al, 2021), by promoting the growth of host plants (Johnson et al, 2003;Rodriguez et al, 2008), eliciting metabolite production (Strobel et al, 2004;Kaul et al, 2012;Kusari et al, 2014;Wang et al, 2015), and mediating stress relief in plants (Yan et al, 2019). Thus, plant-endophyte interactions greatly contribute to the improved plant fitness.…”

Section: Introductionmentioning

confidence: 99%

Transcriptomic and Metabolomic Approaches Deepen Our Knowledge of Plant–Endophyte Interactions

et al. 2022

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In natural systems, plant–symbiont–pathogen interactions play important roles in mitigating abiotic and biotic stresses in plants. Symbionts have their own special recognition ways, but they may share some similar characteristics with pathogens based on studies of model microbes and plants. Multi-omics technologies could be applied to study plant–microbe interactions, especially plant–endophyte interactions. Endophytes are naturally occurring microbes that inhabit plants, but do not cause apparent symptoms in them, and arise as an advantageous source of novel metabolites, agriculturally important promoters, and stress resisters in their host plants. Although biochemical, physiological, and molecular investigations have demonstrated that endophytes confer benefits to their hosts, especially in terms of promoting plant growth, increasing metabolic capabilities, and enhancing stress resistance, plant–endophyte interactions consist of complex mechanisms between the two symbionts. Further knowledge of these mechanisms may be gained by adopting a multi-omics approach. The involved interaction, which can range from colonization to protection against adverse conditions, has been investigated by transcriptomics and metabolomics. This review aims to provide effective means and ways of applying multi-omics studies to solve the current problems in the characterization of plant–microbe interactions, involving recognition and colonization. The obtained results should be useful for identifying the key determinants in such interactions and would also provide a timely theoretical and material basis for the study of interaction mechanisms and their applications.

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An Ecological Insight into the Multifaceted World of Plant-Endophyte Association

Cited by 45 publications

References 136 publications

Bacterial Endophyte Community Dynamics in Apple (Malus domestica Borkh.) Germplasm and Their Evaluation for Scab Management Strategies

Bacterial Endophyte Community Dynamics in Apple (Malus domestica Borkh.) Germplasm and Their Evaluation for Scab Management Strategies

Associations of Pantoea with Rice Plants: As Friends or Foes?

Transcriptomic and Metabolomic Approaches Deepen Our Knowledge of Plant–Endophyte Interactions

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