論文

査読有り 招待有り
2016年10月

Morphological changes in senescing petal cells and the regulatory mechanism of petal senescence

JOURNAL OF EXPERIMENTAL BOTANY
  • Kenichi Shibuya
  • ,
  • Tetsuya Yamada
  • ,
  • Kazuo Ichimura

67
20
開始ページ
5909
終了ページ
5918
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1093/jxb/erw337
出版者・発行元
OXFORD UNIV PRESS

Petal senescence, or programmed cell death (PCD) in petals, is a developmentally regulated and genetically programmed process. During petal senescence, petal cells show morphological changes associated with PCD: tonoplast rupture and rapid destruction of the cytoplasm. This type of PCD is classified as vacuolar cell death or autolytic PCD based on morphological criteria. In PCD of petal cells, characteristic morphological features including an autophagy-like process, chromatin condensation, and nuclear fragmentation are also observed. While the phytohormone ethylene is known to play a crucial role in petal senescence in some plant species, little is known about the early regulation of ethylene-independent petal senescence. Recently, a NAC (NAM/ATAF1,2/CUC2) transcription factor was reported to control the progression of PCD during petal senescence in Japanese morning glory, which shows ethylene-independent petal senescence. In ethylene-dependent petal senescence, functional analyses of transcription factor genes have revealed the involvement of a basic helix-loop-helix protein and a homeodomain-leucine zipper protein in the transcriptional regulation of the ethylene biosynthesis pathway. Here we review the recent advances in our knowledge of petal senescence, mostly focusing on the morphology of senescing petal cells and the regulatory mechanisms of PCD by senescence-associated transcription factors during petal senescence.


リンク情報
DOI
https://doi.org/10.1093/jxb/erw337
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000387993200004&DestApp=WOS_CPL
ID情報
  • DOI : 10.1093/jxb/erw337
  • ISSN : 0022-0957
  • eISSN : 1460-2431
  • Web of Science ID : WOS:000387993200004

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