Please wait a minute...
J Integr Plant Biol, 2016, 58 (10): 859-869, Research Article
Abscisic acid and ethephon regulation of cellulase in the endosperm cap and radicle during lettuce seed germination
Bingxian Chen1,2, Jun Ma1, Zhenjiang Xu1 and Xiaofeng Wang1*
1Seed Science and Technology Lab, College of Life Sciences, South China Agricultural University, Guangzhou 510642, China
2Agro-biological Gene Research Center, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
*Correspondence: E-mail: xfwang@scau.edu.cn.
doi: 10.1111/jipb.12479
Abstract

The purpose of this study was to investigate the role of cellulase in endosperm cap weakening and radicle elongation during lettuce (Lactuca sativa L.) seed germination. The application of abscisic acid (ABA) or ethephon inhibits or promotes germination, respectively, by affecting endosperm cap weakening and radicle elongation. Cellulase activities, and related protein and transcript abundances of two lettuce cellulase genes, LsCEL1 and LsCEL2, increase in the endosperm cap and radicle prior to radicle protrusion following imbibition in water. ABA or ethephon reduce or elevate, respectively, cellulase activity, and related protein and transcript abundances in the endosperm cap. Taken together, these observations suggest that cellulase plays a role in endosperm cap weakening and radicle elongation during lettuce seed germination, and that the regulation of cellulase in the endosperm cap by ABA and ethephon play a role in endosperm cap weakening. However, the influence of ABA and ethephon on radicle elongation may not be through their effects on cellulase.

--------------------------------------------------------------------------------------------------------------------
Received: 09 July 2015      Accepted:    Online on:
This Article
   Full Text  
   Full Text (PDF) 
   Supporting information
Services
   E-mail Link to this Article
   Export Citation for this Article
Citing Articles
   Cited By
Google Scholar
   Articles by Bingxian Chen
   Articles by Jun Ma
   Articles by Zhenjiang Xu
   Articles by Xiaofeng Wang
PubMed
   Articles by Bingxian Chen
   Articles by Jun Ma
   Articles by Zhenjiang Xu
   Articles by Xiaofeng Wang
Editorial Office, Journal of Integrative Plant Biology, Institute of Botany, CAS
No. 20 Nanxincun, Xiangshan, Beijing 100093, China
Tel: +86 10 6283 6133 Fax: +86 10 8259 2636 E-mail: jipb@ibcas.ac.cn
Copyright © 2020 by the Institute of Botany, the Chinese Academy of Sciences
Online ISSN: 1744-7909 Print ISSN: 1672-9072 CN: 11-5067/Q
网站备案号:京ICP备16067583号-22