文献类型：期刊文献

英文题名：Endogenous hormonal equilibrium linked to bamboo culm development

作者：Wang, H. Y.[1] Cui, K.[1] He, C. Y.[2] Zeng, Y. F.[2] Liao, S. X.[1] Zhang, J. G.[2]

第一作者：Wang, H. Y.

通信作者：Zhang, JG[1]

机构：[1]Chinese Acad Forestry, Res Inst Resources Insects, Kunming, Peoples R China;[2]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Genet & Breeding, Beijing, Peoples R China

年份：2015

卷号：14

期号：3

起止页码：11312-11323

外文期刊名：GENETICS AND MOLECULAR RESEARCH

收录：;Scopus(收录号：2-s2.0-84942279177);WOS:【SCI-EXPANDED(收录号:WOS:000362421700092)】；

基金：Research supported by the National Natural Science Foundation of China (#31300501 and #30972332), and the National Nonprofit Institute Research Grant from the Research Institute of Resources Insects, Chinese Academy of Forestry (CAFYBB2014QB020 and riricaf2013002M).

语种：英文

外文关键词：Phyllostachys heterocycla; Internode elongation; Plant hormones; Cell length; Cell division

摘要：Moso bamboo (Phyllostachys heterocycla) is the most important bamboo species in China and is famous for its fast-growing culms. To investigate the possible relationship between internode development and endogenous hormones, the concentrations of indole-3-acetic acid (IAA), zeatin riboside (ZR), gibberellins (GA(3)), and abscisic acid (ABA) were analyzed in culm samples from plants at different developmental stages during a single growing season and, at the same time, anatomical structure was closely monitored. Cell division was the dominant process in internode development during early development, while cell elongation predominated at later stages. There was a negative correlation between the rates of cell division and cell elongation. The four endogenous hormones (IAA, ZR, GA(3), and ABA) displayed fluctuations in their levels at different developmental stages but their peak activities were not synchronous. Cell division rate had a significant positive correlation with ZR concentration. Cell elongation had a significant positive correlation with the ratio of promoting hormones (IAA, GA(3), and ZR) to inhibitory hormone (ABA) concentrations. We conclude that hormonal equilibrium might regulate the division and elongation of bamboo culms.