Small Noncoding RNA-Based Regulation of Plant Immunity

Gupta, Om Prakash; Pandey, Vanita; Meena, Nirmal Kumar; Karkute, Suhas Gorakh; Banerjee, Sagar; Dahuja, Anil

doi:10.1007/978-981-10-7371-7_9

Cited by 1 publication

(2 citation statements)

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“…Changes in sRNA expression in the presence of various pathogens, as well as changes in pathogen susceptibility in plant mutants in sRNA genes or in sRNA-guided silencing pathway genes, underscore the pivotal roles of sRNAs as key regulators in plant immune responses to a diversity of pathogens [12,14]. More specifically, some sRNAs have turned out to be regulators in the response to B. cinerea.…”

Section: Competing Interestsmentioning

confidence: 99%

“…These defense responses mainly consist of transcriptional regulation of transcription factors and genes for biosynthesis and perception of plant hormones (including jasmonic acid, ethylene, salicylic acid, auxins and abscisic acid) to modulate the expression of genes devoted to the reinforcement of the plant physical barriers, the biosynthesis of antimicrobial molecules and the modulation of plant cell death responses [5]. There is also substantial evidence for a role of plant endogenous small RNAs (sRNAs) in the regulation of gene expression in immune responses [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

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Identification of Arabidopsis thaliana small RNAs responsive to the fungal pathogen Botrytis cinerea at an early stage of interaction

Padilla-Padilla,

De la Rosa,

Aragón

et al. 2024

PLoS ONE

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In plants, small RNAs (sRNAs), mainly microRNAs (miRNAs) and small interfering RNAs (siRNAs), have been described as key regulators of plant development, growth, and abiotic and biotic responses. Despite reports indicating the involvement of certain sRNAs in regulating the interaction between Botrytis cinerea (a major necrotrophic fungal phytopathogen) and host plants, there remains a lack of analysis regarding the potential regulatory roles of plant sRNAs during early stages of the interaction despite early immune responses observed then during infection. We present the first transcriptome-wide analysis of small RNA expression on the early interaction between the necrotrophic fungus Botrytis cinerea and the model plant Arabidopsis thaliana. We found that evolutionary conserved A. thaliana miRNAs were the sRNAs that accumulated the most in the presence of B. cinerea. The upregulation of miR167, miR159 and miR319 was of particular interest because these, together with their target transcripts, are involved in the fine regulation of the plant hormone signaling pathways. We also describe that miR173, which triggers the production of secondary siRNAs from TAS1 and TAS2 loci, as well as secondary siRNAs derived from these loci, is upregulated in response to B. cinerea. Thus, at an early stage of the interaction there are transcriptional changes of sRNA-guided silencing pathway genes and of a subset of sRNAs that targeted genes from the PPR gene superfamily, and these may be important mechanisms regulating the interaction between A. thaliana and B. cinerea. This work provides the basis for a better understanding of the regulation mediated by sRNAs during early B. cinerea-plant interaction and may help in the development of more effective strategies for its control.

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Section: Competing Interestsmentioning

confidence: 99%