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Programming of Plant Leaf Senescence with Temporal and Inter-Organellar Coordination of Transcriptome in Arabidopsis

Title
Programming of Plant Leaf Senescence with Temporal and Inter-Organellar Coordination of Transcriptome in Arabidopsis
Authors
Woo, Hye RyunKoo, Hee JungKim, JeongsikJeong, HyobinYang, Jin OkLee, Il HwanJun, Ji HyungChoi, Seung HeePark, Su JinKang, ByeongsooKim, You WangPhee, Bong-KwanKim, Jin HeeSeo, ChaehwaPark, CharnyKim, Sang CheolPark, SeongjinLee, ByungwookLee, SanghyukHwang, DaeheeNam, Hong GilLim, Pyung Ok
Ewha Authors
이상혁
SCOPUS Author ID
이상혁scopus
Issue Date
2016
Journal Title
PLANT PHYSIOLOGY
ISSN
0032-0889JCR Link1532-2548JCR Link
Citation
vol. 171, no. 1, pp. 452 - 467
Publisher
AMER SOC PLANT BIOLOGISTS
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Plant leaves, harvesting light energy and fixing CO2, are a major source of foods on the earth. Leaves undergo developmental and physiological shifts during their lifespan, ending with senescence and death. We characterized the key regulatory features of the leaf transcriptome during aging by analyzing total- and small-RNA transcriptomes throughout the lifespan of Arabidopsis (Arabidopsis thaliana) leaves at multidimensions, including age, RNA-type, and organelle. Intriguingly, senescing leaves showed more coordinated temporal changes in transcriptomes than growing leaves, with sophisticated regulatory networks comprising transcription factors and diverse small regulatory RNAs. The chloroplast transcriptome, but not the mitochondrial transcriptome, showed major changes during leaf aging, with a strongly shared expression pattern of nuclear transcripts encoding chloroplast-targeted proteins. Thus, unlike animal aging, leaf senescence proceeds with tight temporal and distinct interorganellar coordination of various transcriptomes that would be critical for the highly regulated degeneration and nutrient recycling contributing to plant fitness and productivity.
DOI
10.1104/pp.15.01929
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자연과학대학 > 생명과학전공 > Journal papers
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