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Arabidopsis STAYGREEN-LIKE (SGRL) promotes abiotic stress-induced leaf yellowing during vegetative growth

Cited 36 time in Web of Science Cited 38 time in Scopus
Authors
Sakuraba, Yasuhito; Kim, Dami; Kim, Ye-Sol; Hörtensteiner, Stefan; Paek, Nam-Chon
Issue Date
2014-11
Publisher
Elsevier
Citation
FEBS LETTERS Vol.588 No.21, pp. 3830-3837
Keywords
자연과학Chlorophyll degradationSTAYGREENSTAYGREEN-LIKEAbiotic stress
Abstract
During leaf senescence in Arabidopsis, STAYGREEN 1 (SGR1) and SGR2 regulate chlorophyll degradation positively and negatively, respectively. SGR-LIKE (SGRL) is also expressed in pre-senescing leaves, but its function remains largely unknown. Here we show that under abiotic stress, Arabidopsis plants overexpressing SGRL exhibit early leaf yellowing and sgrl-1 mutants exhibit persistent green color of leaves. Under salt stress, SGR1 and SGRL act synergistically for rapid Chl degradation prior to senescence. Furthermore, SGRL forms homo- and heterodimers with SGR1 and SGR2 in vivo, and interacts with LHCII and chlorophyll catabolic enzymes. The role of SGRL under abiotic stresses is discussed.
ISSN
0014-5793
Language
English
URI
https://hdl.handle.net/10371/93393
DOI
https://doi.org/10.1016/j.febslet.2014.09.018
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College of Agriculture and Life Sciences (농업생명과학대학)Dept. of Plant Science (식물생산과학부)Journal Papers (저널논문_식물생산과학부)
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