Cited 19 time in webofscience Cited 22 time in scopus

ORESARA15, a PLATZ transcription factor, mediates leaf growth and senescence in Arabidopsis

Title
ORESARA15, a PLATZ transcription factor, mediates leaf growth and senescence in Arabidopsis
Authors
Kim, Jin HeeKim, JeongsikJun, Sang EunPark, Sang HoonTimilsina, RupakKwon, Da SomKim, Yong MinPark, Sung-JinHwang, Ji YoungNam, Hong GilKim, Gyung-TaeWoo, Hye Ryun
DGIST Authors
Nam, Hong GilWoo, Hye Ryun
Issue Date
2018-10
Citation
New Phytologist, 220(2), 609-623
Type
Article
Article Type
Article
Author Keywords
Arabidopsiscell proliferationGIF1AN3GRFGIF regulatory moduleleaf growthleaf senescenceORE15PLATZ
Keywords
MICRORNA MIR396AUXIN RESPONSE FACTOR-2F-BOX PROTEINCELL-PROLIFERATIONDEVELOPMENTAL REGULATORSHOOT GROWTHSIZE CONTROLORGAN SIZETHALIANALONGEVITY
ISSN
0028-646X
Abstract
Plant leaves undergo a series of developmental changes from leaf primordium initiation through growth and maturation to senescence throughout their life span. Although the mechanisms underlying leaf senescence have been intensively elucidated, our knowledge of the interrelationship between early leaf development and senescence is still fragmentary. We isolated the oresara15-1Dominant (ore15-1D) mutant, which had an extended leaf longevity and an enlarged leaf size, from activation-tagged lines of Arabidopsis. Plasmid rescue identified that ORE15 encodes a PLANT A/T-RICH SEQUENCE- AND ZINC-BINDING PROTEIN family transcription factor. Phenotypes of ore15-1D and ore15-2, a loss-of-function mutant, were evaluated through physiological and anatomical analyses. Microarray, quantitative reverse transcription polymerase chain reaction, and chromatin immunoprecipitation as well as genetic analysis were employed to reveal the molecular mechanism of ORE15 in the regulation of leaf growth and senescence. ORE15 enhanced leaf growth by promoting the rate and duration of cell proliferation in the earlier stage and suppressed leaf senescence in the later stage by modulating the GROWTH-REGULATING FACTOR (GRF)/GRF-INTERACTING FACTOR regulatory pathway. Our study highlighted a molecular conjunction through ORE15 between growth and senescence, which are two temporally separate developmental processes during leaf life span. © 2018 The Authors. New Phytologist © 2018 New Phytologist Trust
URI
http://hdl.handle.net/20.500.11750/9331
DOI
10.1111/nph.15291
Publisher
Blackwell Publishing Ltd
Related Researcher
  • Author Nam, Hong Gil CBRG(Complex Biology Research Group)
  • Research Interests Plant Aging and Life History; Systems Biology; Complexbiology; Comparative Aging Research
Files:
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Collection:
Department of New BiologyCBRG(Complex Biology Research Group)1. Journal Articles
Department of New BiologyLab of Plant Molecular Communication1. Journal Articles


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