锌胁迫长春花不同部位Zn积累受外源乙烯利调控的特点

doi:10.7525/j.issn.1673-5102.2015.01.023

摘要/Abstract

摘要： 外源锌胁迫条件下长春花植株根部对Zn的富集能力较强，因此Zn对根部的伤害也较大。长春花响应锌胁迫条件下根部对Zn的吸收富集能力随着Zn处理浓度的增高表现出低促高抑的现象，茎、叶片中Zn含量随着Zn处理浓度的增加逐渐升高，说明长春花对于Zn的富集能力较强，且有一定的超富集潜力。而转运能力主要表现为Zn由成熟组织向幼嫩组织转运率较强。在锌胁迫基础上加入外源乙烯利后，降低了植株各组织部位对Zn的富集能力，降低了锌胁迫对长春花植株的胁迫伤害。促进了Zn由成熟叶片向幼嫩组织的转运率，但是抑制了Zn在长春花植株体内其余组织间的的运输。

关键词: 长春花, 锌胁迫, 乙烯利, 富集, 转运, 耐受性

Abstract: Catharanthus roseus root enrichment ability of Zn is stronger on exogenous zinc stress, so Zn damage to the root is larger. C.roseus root response to enrichment ability of zinc stress on the absorption of Zn with the concentration of Zn increased exhibit advanced in low concentration but controled in high concentration, Zn content of stem, leaves increased gradually with increasing Zn concentration, shows strong enrichment ability of C.roseus for Zn, and there is some potential hyperaccumulator. While the Zn transport ability is strong from mature tissue to young tissues. In the zinc stress based on adding exogenous ethylene, reducing the organization position of plant enrichment ability of Zn, reducing the zinc stress of C.roseus. To promote the Zn transport rate of mature tissue to young tissue, but inhibited Zn transport in C.roseus other tissue.

Key words: Catharanthus roseus;Zinc stress;Ethephon, accumulate;transport;tolerance

中图分类号:

金玲；高媚娇；段喜华；郭晓瑞*. 锌胁迫长春花不同部位Zn积累受外源乙烯利调控的特点[J]. 植物研究, 2015, 35(1): 150-153.

JIN Ling；GAO Mei-Jiao；DUAN Xi-Hua；GUO Xiao-Rui*. Zn Stress Changchun Spend Different Parts of Zn Accumulation by Exogenous Ethephon Regulation[J]. Bulletin of Botanical Research, 2015, 35(1): 150-153.

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