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Glycosyltransferase-Like RSE1 Negatively Regulates Leaf Senescence Through Salicylic Acid Signaling in Arabidopsis

Title
Glycosyltransferase-Like RSE1 Negatively Regulates Leaf Senescence Through Salicylic Acid Signaling in Arabidopsis
Authors
Lee, SeulbeeKim, Myung-HeeLee, Jae HoJeon, JieunKwak, June MyoungKim, Yun Ju
DGIST Authors
Kwak, June Myoung
Issue Date
2020-05
Citation
Frontiers in Plant Science, 11, 551
Type
Article
Article Type
Article
Author Keywords
cell wallglycosylationglycosyltransferaseleaf senescencesalicylic acid
Keywords
CELL-WALL BIOSYNTHESISAGE-RELATED RESISTANCETRANSCRIPTION FACTORDEFENSE RESPONSESPLANT DEFENSEARABIDOPSISPROTEINDEATHEXPRESSIONGENES
ISSN
1664-462X
Abstract
Leaf senescence is a developmental process designed for nutrient recycling and relocation to maximize growth competence and reproductive capacity of plants. Thus, plants integrate developmental and environmental signals to precisely control senescence. To genetically dissect the complex regulatory mechanism underlying leaf senescence, we identified an early leaf senescence mutant, rse1. RSE1 encodes a putative glycosyltransferase. Loss-of-function mutations in RSE1 resulted in precocious leaf yellowing and up-regulation of senescence marker genes, indicating enhanced leaf senescence. Transcriptome analysis revealed that salicylic acid (SA) and defense signaling cascades were up-regulated in rse1 prior to the onset of leaf senescence. We found that SA accumulation was significantly increased in rse1. The rse1 phenotypes are dependent on SA-INDUCTION DEFICIENT 2 (SID2), supporting a role of SA in accelerated leaf senescence in rse1. Furthermore, RSE1 protein was localized to the cell wall, implying a possible link between the cell wall and RSE1 function. Together, we show that RSE1 negatively modulates leaf senescence through an SID2-dependent SA signaling pathway. © Copyright © 2020 Lee, Kim, Lee, Jeon, Kwak and Kim.
URI
http://hdl.handle.net/20.500.11750/12338
DOI
10.3389/fpls.2020.00551
Publisher
Frontiers Media S.A.
Related Researcher
  • Author Kwak, June Myoung Lab of Cell Signaling and Development
  • Research Interests Calcium Signaling; ABA;ROS Signaling; plant development; Development of Abscission; Culluar Features; Signaling network; Environmental Regulation
Files:
Collection:
Department of New BiologyLab of Cell Signaling and Development1. Journal Articles


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