脱落酸敏感性对拟南芥气孔行为的影响

Q3 Agricultural and Biological Sciences

Eurasian Journal of Biosciences Pub Date : 2009-07-01 DOI:10.5053/EJOBIOS.2009.3.0.2

Hao Zhang, M. Qiu, Gen-xuan Wang, Y. Gan, Kefeng Zheng, Xu-guo Yao

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引用次数: 2

摘要

在严重干旱条件下，气孔振荡是防止水分流失、降低蒸腾速率和提高水分利用效率的有效机制。已有研究表明，aba诱导的H2O2生成和H2O2激活的ca2 +通道是aba诱导气孔振荡的重要机制。本研究以拟南芥(Arabidopsis thaliana)突变体(abi1-1，对ABA不敏感，era1-2，对ABA敏感)和野生型为研究对象，研究了对ABA的敏感性如何调节气孔振荡。结果表明:(1)对ABA的超敏反应增强了ABA诱导的气孔振荡和关闭;(2)对ABA的不敏感消除了ABA诱导的气孔振荡和关闭;(3)气孔振荡、闭合与脱落酸敏感性呈正相关。结果表明，对ABA的敏感性可能调控拟南芥的气孔振荡和关闭。

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The effect of sensitivity to abscisic acid on stomatal behaviour in Arabidopsis thaliana

Stomatal oscillation has been described as an efficient mechanism to prevent water loss, decrease the transpiration rate and to improve water use efficiency under severe drought conditions. Former researches demonstrated that ABA-induced H2O2 production and H2O2activated Ca 2+ channels were important mechanism for ABA-induced stomatal oscillation. In this study, how sensitivity to abscisic acid (ABA) regulates stomatal oscillation was investigated with Arabidopsis thaliana mutants (abi1-1, insensitivity to ABA and era1-2, hypersensitive to ABA) and wild types. The results showed that (1) hypersensitivity to ABA strengthens stomatal oscillation and closure induced by ABA; (2) insensitivity to ABA abolishes stomatal oscillation and closure induced by ABA; and (3) there is a positive relationship between stomatal oscillation, closure and sensitivity to abscisic acid. The data indicates that sensitivity to ABA may regulate stomatal oscillation and closure in Arabidopsis thaliana.

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来源期刊

Eurasian Journal of Biosciences Agricultural and Biological Sciences-Agricultural and Biological Sciences (all)

CiteScore

1.20

自引率

0.00%

发文量

期刊介绍： EurAsian Journal of BioSciences (Abbrev. Eurasia J Biosci or EJOBIOS) is an international, refereed electronic journal. It publishes the results of original research in the field of biological sciences restricted tomorphology, physiology, genetics, taxonomy, ecology and biogeography of both prokaryotic and eucaryotic organisms. The journal encourages submission of manuscripts dealing with plant biology, animal biology, plant physiology, microbiology, hydrobiology, ecology and environmental science, ethnobiology, biodiversity and conservation biology. EurAsian Journal of BioSciences publishes original articles in the following areas: -Agriculture, Fisheries & Food -Anatomy & Morphology -Behavioural Sciences -Biology, Biochemistry and Biotechnology -Biophysics -Biology Education -Cellular Biology and Anatomical Sciences -Ecology, Evolution & Environment -Entomology -Forestry -General Biology -Genetics & Heredity -Life Sciences - Other topics -Microbiology and Immunology -Molecular Biology -Mycology -Palaeontology -Parasitology -Pharmacology & Pharmacy -Physiology and Related Sciences -Plant Sciences -Toxicology -Veterinary Sciences -Virology -Zoology