Hormonal regulation of photosynthetic enzymes in cotton under water stress

被引：1

作者：

Pandey, DM ^{[1
]}

Goswami, CL ^{[1
]}

Kumar, B ^{[1
]}

Jain, S ^{[1
]}

机构：

[1] Haryana Agr Univ, CCS, Dept Bot & Plant Physiol, Hisar 125004, Haryana, India

来源：

PHOTOSYNTHETICA | 2000年 / 38卷 / 03期

关键词：

abscisic acid; benzylaminopurine; carbonic anhydrase; ethrel; gibberellic acid; Gossypium hirsutum; phosphoenolpyruvate carboxylase; ribulose-1,5-bisphosphate carboxylase/oxygenase;

D O I：

暂无

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Activities of ribulose bisphosphate carboxylase/oxygenase (RuBPCO), phosphoenolpyruvate carboxylase (PEPC), and carbonic anhydrase (CA) were determined in leaves of cotton (Gossypium hirsutum L. cv. 11-777) subjected to 8-d waterlogging (WL) at the vegetative stage, or to drought (D) at the reproductive stage, or to interaction of both stresses. The soil moisture of control plants was kept at field capacity. One day prior to stress various growth hormones (5 muM) were sprayed up to runoff. WL reduced RuBPCO and CA activities, while PEPC activity increased. Upon D, RuBPCO and PEPC activities were reduced while CA activity was increased. Imposition of both stresses increased activities of all three enzymes. Effect of stresses on enzyme activity was alleviated by benzylaminopurine (BAP), but indol-3-yl-acetic acid was more promoting under interactive stress. No CA activity with BAP was observed during interactive stress.

引用

页码：403 / 407

页数：5

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