Changes in endogenous hormones and oxidative burst as the biochemical basis for enhanced shoot organogenesis in cold-treated Saussurea involucrata explants
文献类型：期刊论文
| 作者 | Guo, Bin; Stiles, Amanda R.; Liu, Chun-Zhao |
| 刊名 | ACTA PHYSIOLOGIAE PLANTARUM
 |
| 出版日期 | 2013 |
| 卷号 | 35期号:1页码:283-287 |
| 关键词 | Saussurea involucrata Low temperature Shoot organogenesis Superoxide dismutase Zeatin |
| 英文摘要 | A 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. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Plant Sciences |
| 研究领域[WOS] | Plant Sciences |
| 关键词[WOS] | PLANT-REGENERATION ; HYDROGEN-PEROXIDE ; ENZYME-ACTIVITIES ; LOW-TEMPERATURE ; STRESS ; ANTIOXIDANTS ; CALLUS ; WHEAT ; KAR. ; KIR |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000313015300029 |
| 公开日期 | 2015-05-27 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/13509]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | Chinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：过程工程研究所
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