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Changes in endogenous hormones and oxidative burst as the biochemical basis for enhanced shoot organogenesis in cold-treated Saussurea involucrata explants
Guo, Bin; Stiles, Amanda R.; Liu, Chun-Zhao
2013
Source PublicationACTA PHYSIOLOGIAE PLANTARUM
Volume35Issue:1Pages:283-287
AbstractA low temperature treatment significantly improved shoot morphogenesis of Saussurea involucrata Kar. et Kir leaf explants. The biochemical mechanisms underlying the cold-induced shoot organogenesis were investigated by measuring endogenous plant growth hormones, peroxide radicals, and superoxide dismutase (SOD) activity in the cold-treated leaf explants compared to controls. The ratio of zeatin (ZT) to indole-3-acetic acid (IAA) significantly increased in leaf explants subjected to a 5-day treatment at 4 A degrees C compared to controls. The accumulation of O (2) (center dot-) also rapidly increased in response to cold treatment, and then decreased as SOD activity catalyzed the dismutation of O (2) (center dot-) to molecular oxygen and H2O2; this resulted in a significant increase in H2O2 concentrations in the cold-treated explants. We propose that a combination of the increased ZT/IAA ratio and H2O2 concentration is the basis for the enhanced shoot morphogenesis in response to cold treatment. These results provide a starting point for an improved understanding of the biochemical mechanisms underlying cold-induced shoot organogenesis of this unique plant species.
KeywordSaussurea Involucrata Low Temperature Shoot Organogenesis Superoxide Dismutase Zeatin
SubtypeArticle
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Language英语
WOS KeywordPLANT-REGENERATION ; HYDROGEN-PEROXIDE ; ENZYME-ACTIVITIES ; LOW-TEMPERATURE ; STRESS ; ANTIOXIDANTS ; CALLUS ; WHEAT ; KAR. ; KIR
WOS Research AreaPlant Sciences
WOS SubjectPlant Sciences
WOS IDWOS:000313015300029
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/13509
Collection研究所(批量导入)
AffiliationChinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Guo, Bin,Stiles, Amanda R.,Liu, Chun-Zhao. Changes in endogenous hormones and oxidative burst as the biochemical basis for enhanced shoot organogenesis in cold-treated Saussurea involucrata explants[J]. ACTA PHYSIOLOGIAE PLANTARUM,2013,35(1):283-287.
APA Guo, Bin,Stiles, Amanda R.,&Liu, Chun-Zhao.(2013).Changes in endogenous hormones and oxidative burst as the biochemical basis for enhanced shoot organogenesis in cold-treated Saussurea involucrata explants.ACTA PHYSIOLOGIAE PLANTARUM,35(1),283-287.
MLA Guo, Bin,et al."Changes in endogenous hormones and oxidative burst as the biochemical basis for enhanced shoot organogenesis in cold-treated Saussurea involucrata explants".ACTA PHYSIOLOGIAE PLANTARUM 35.1(2013):283-287.
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