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Research article - Peer-reviewed, 2021

Aphid feeding induces the relaxation of epigenetic control and the associated regulation of the defense response in Arabidopsis

Annacondia, Maria Luz; Markovic, Dimitrije; Reig-Valiente, Juan Luis; Scaltsoyiannes, Vassilis; Pieterse, Corne M. J.; Ninkovic, Velemir; Slotkin, R. Keith; Martinez, German;

Abstract

Environmentally induced changes in the epigenome help individuals to quickly adapt to fluctuations in the conditions of their habitats.We explored those changes in Arabidopsis thaliana plants subjected to multiple biotic and abiotic stresses, and identified transposable element (TE) activation in plants infested with the green peach aphid, Myzus persicae. We performed a genome-wide analysis mRNA expression, small RNA accumulation and DNA methylationOur results demonstrate that aphid feeding induces loss of methylation of hundreds of loci, mainly TEs. This loss of methylation has the potential to regulate gene expression and we found evidence that it is involved in the control of plant immunity genes. Accordingly, mutant plants deficient in DNA and H3K9 methylation (kyp) showed increased resistance to M. persicae infestation.Collectively, our results show that changes in DNA methylation play a significant role in the regulation of the plant transcriptional response and induction of defense response against aphid feeding.

Keywords

aphids; Arabidopsis; defense response; epigenetics; transcriptional regulation; transposable elements

Published in

New Phytologist

2021, volume: 230, number: 3, pages: 1185-1200
Publisher: WILEY

Authors' information

Annacondia, María Luz (Annacondia López, María Luz)
Swedish University of Agricultural Sciences, Department of Plant Biology
Swedish University of Agricultural Sciences, Department of Crop Production Ecology
University of Banja Luka (UNIBL)
Reig Valiente, Juan Luis
Swedish University of Agricultural Sciences, Department of Plant Biology
Scaltsoyiannes, Vassilis
Swedish University of Agricultural Sciences, Department of Plant Biology
Scaltsoyiannes, Vassilis
University of Strasbourg
Pieterse, Corne M. J.
Utrecht University
Swedish University of Agricultural Sciences, Department of Ecology
Slotkin, R. Keith
Donald Danforth Plant Science Center
Martinez Arias, German (Martinez-Arias, Germán)
Swedish University of Agricultural Sciences, Department of Plant Biology

UKÄ Subject classification

Genetics
Botany

Publication Identifiers

DOI: https://doi.org/10.1111/nph.17226

URI (permanent link to this page)

https://res.slu.se/id/publ/111002