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The small RNA‐mediated gene silencing machinery is required in Arabidopsis for stimulation of growth, systemic disease resistance, and suppression of the nitrile‐specifier gene NSP4 by Trichoderma atroviride

Rebolledo‐Prudencio, Oscar Guillermo ; Estrada‐Rivera, Magnolia ; Dautt‐Castro, Mitzuko ; Arteaga‐Vazquez, Mario A. ; Arenas‐Huertero, Catalina ; Rosendo‐Vargas, Maria Montserrat ; Jin, Hailing ; Casas‐Flores, Sergio

The Plant journal : for cell and molecular biology, 2022-02, Vol.109 (4), p.873-890 [Periódico revisado por pares]

England: Blackwell Publishing Ltd

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Título:
The small RNA‐mediated gene silencing machinery is required in Arabidopsis for stimulation of growth, systemic disease resistance, and suppression of the nitrile‐specifier gene NSP4 by Trichoderma atroviride
Autor: Rebolledo‐Prudencio, Oscar Guillermo ; Estrada‐Rivera, Magnolia ; Dautt‐Castro, Mitzuko ; Arteaga‐Vazquez, Mario A. ; Arenas‐Huertero, Catalina ; Rosendo‐Vargas, Maria Montserrat ; Jin, Hailing ; Casas‐Flores, Sergio
Assuntos: Arabidopsis ; Arabidopsis - genetics ; Arabidopsis - metabolism ; Arabidopsis Proteins - metabolism ; Botrytis ; Chitin ; Colonization ; Cyclopentanes ; Deoxyribonucleic acid ; Disease resistance ; Disease Resistance - genetics ; DNA ; DNA fingerprinting ; DNA methylation ; Epigenetics ; Fungi ; Gene expression ; Gene Expression Regulation, Plant ; Gene Silencing ; Genes ; histone acetylation ; Histones ; Hypocreales - genetics ; Hypocreales - metabolism ; Jasmonic acid ; Mutants ; mutualism ; Nitriles - metabolism ; nitrile‐specifier protein (NSP) ; Oxylipins ; Pathogens ; Plant Diseases - genetics ; Plant Diseases - immunology ; Plant growth ; Plant Roots - metabolism ; Priming ; Ribonucleic acid ; RNA ; RNA - metabolism ; RNA-mediated interference ; RNA‐directed DNA methylation ; Salicylic acid ; Salicylic Acid - metabolism ; small RNA ; Trichoderma ; Trichoderma - genetics ; Trichoderma - metabolism ; Trichoderma atroviride
É parte de: The Plant journal : for cell and molecular biology, 2022-02, Vol.109 (4), p.873-890
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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Descrição: SUMMARY Trichoderma atroviride is a root‐colonizing fungus that confers multiple benefits to plants. In plants, small RNA (sRNA)‐mediated gene silencing (sRNA‐MGS) plays pivotal roles in growth, development, and pathogen attack. Here, we explored the role of core components of Arabidopsis thaliana sRNA‐MGS pathways during its interaction with Trichoderma. Upon interaction with Trichoderma, sRNA‐MGS‐related genes paralleled the expression of Arabidopsis defense‐related genes, linked to salicylic acid (SA) and jasmonic acid (JA) pathways. SA‐ and JA‐related genes were primed by Trichoderma in leaves after the application of the well‐known pathogen‐associated molecular patterns flg22 and chitin, respectively. Defense‐related genes were primed in roots as well, but to different extents and behaviors. Phenotypical characterization of mutants in AGO genes and components of the RNA‐dependent DNA methylation (RdDM) pathway revealed that different sets of sRNA‐MGS‐related genes are essential for (i) the induction of systemic acquired resistance against Botrytis cinerea, (ii) the activation of the expression of plant defense‐related genes, and (iii) root colonization by Trichoderma. Additionally, plant growth induced by Trichoderma depends on functional RdDM. Profiling of DNA methylation and histone N‐tail modification patterns at the Arabidopsis Nitrile‐Specifier Protein‐4 (NSP4) locus, which is responsive to Trichoderma, showed altered epigenetic modifications in RdDM mutants. Furthermore, NSP4 is required for the induction of systemic acquired resistance against Botrytis and avoidance of enhanced root colonization by Trichoderma. Together, our results indicate that RdDM is essential in Arabidopsis to establish a beneficial relationship with Trichoderma. We propose that DNA methylation and histone modifications are required for plant priming by the beneficial fungus against B. cinerea. Significance Statement The root‐colonizing fungi Trichoderma spp. exert beneficial effects on plants. Great efforts have been made to understand how such relationship is established from the fungal side; however, little is known about the molecular mechanisms used by plants. Here, we provide evidence of the requirement of core components of the plant gene silencing machinery for growth and the induction of systemic resistance against phytopathogens promoted by Trichoderma, mainly those of the RNA‐directed DNA methylation pathway.
Editor: England: Blackwell Publishing Ltd
Idioma: Inglês

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The small RNA‐mediated gene silencing machinery is required in Arabidopsis for stimulation of growth, systemic disease resistance, and suppression of the nitrile‐specifier gene NSP4 by Trichoderma atroviride

Rebolledo‐Prudencio, Oscar Guillermo ; Estrada‐Rivera, Magnolia ; Dautt‐Castro, Mitzuko ; Arteaga‐Vazquez, Mario A. ; Arenas‐Huertero, Catalina ; Rosendo‐Vargas, Maria Montserrat ; Jin, Hailing ; Casas‐Flores, Sergio

England: Blackwell Publishing Ltd

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