Influence of elevated CO2 and O3 on IAA, IAA oxidase and peroxidase in the leaves of ginkgo trees

被引：17

作者：

Li, X-M ^{[1
,3
]}

He, X. -Y. ^{[1
]}

Zhang, L. -H. ^{[2
]}

Chen, W. ^{[1
]}

Chen, Q. ^{[3
]}

机构：

[1] Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China

[2] Liaoning Univ, Coll Resources & Environm Sci, Shenyang 110036, Peoples R China

[3] Shenyang Normal Univ, Coll Chem & Life Sci, Shenyang 110034, Peoples R China

来源：

BIOLOGIA PLANTARUM | 2009年 / 53卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Ginkgo biloba; carbon dioxide; open-top chamber; ozone; CARBON-DIOXIDE; OZONE; ENZYMES; PLANTS; LEVEL; ASPEN;

D O I：

10.1007/s10535-009-0062-7

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

This study examined the impacts of elevated CO2 or O-3 on indole-3-acetic acid (IAA) content, activities of IAA oxidase (IAAO) and peroxidase (POD) in Ginkgo biloba leaves. Plants grown in open-top chambers were exposed to ambient atmosphere (control; C), elevated CO2 and elevated O-3 from 1 June to 30 September. An increase in IAA content and decrease in IAAO and POD activities were observed in plants exposed to elevated CO2 compared with C. Elevated O-3 had no significant effect on IAA content and IAAO activity, but increased POD activity during the early days. When trees pre-exposed to elevated CO2 were transferred to elevated O-3 or C, the increase in IAAO activity resulted in the decrease in IAA content. When trees pre-exposed to elevated O-3 were transferred to elevated CO2 or C, IAA content, IAAO and POD activities showed no significant changes. The influence of POD activity on the IAA activity was low.

引用

页码：339 / 342

页数：4

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