MISC

2000年12月

Abscission of Azolla branches induced by ethylene and sodium azide

PLANT AND CELL PHYSIOLOGY
  • E Uheda
  • ,
  • S Nakamura

41
12
開始ページ
1365
終了ページ
1372
記述言語
英語
掲載種別
DOI
10.1093/pcp/pcd071
出版者・発行元
OXFORD UNIV PRESS

Treatment with ethylene accelerated the abscission of branches of Azolla filiculoides plants. An Azolla plantlet treated with ethylene at 10 mul liter(-1) divided into 4-5 fragments after a lag period of 6-8 h, Ethylene-induced abscission was effectively inhibited by cycloheximide and was associated with an increase in the activities of cellulase and polygalacturonase. At the. fracture surface abscised after treatment with ethylene, dissolution of the primary walls of the abscission zone cells was apparent. However, the middle lamella between abscission zone cells was still present. Immunoelectron microscopy using anti-unesterified pectin (JIM5) and anti-methylesterified pectin (JIM7) monoclonal antibodies revealed the presence of both JIM5 and JIM7 epitopes in the wall between abscission zone cells of branches before abscission occurred. In the middle lamella remaining after ethylene-induced abscission, only JIM7 epitopes were observed. The features of ethylene-induced abscission described herein were different from those of the rapid abscission induced by sodium azide, which implies that they are mediated by different mechanisms. The possible mechanisms are discussed.

Web of Science ® 被引用回数 : 19

リンク情報
DOI
https://doi.org/10.1093/pcp/pcd071
CiNii Articles
http://ci.nii.ac.jp/naid/10007541965
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/11134422
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000165981000010&DestApp=WOS_CPL

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