Responses of Autumn Phenology to Climate Change and the Correlations of Plant Hormone Regulation
文献类型：期刊论文
| 作者 | Zhang, Shixi; Dai, Junhu; Ge, Quansheng |
| 刊名 | SCIENTIFIC REPORTS
 |
| 出版日期 | 2020-06-03 |
| 卷号 | 10期号:1页码:10 |
| ISSN号 | 2045-2322 |
| DOI | 10.1038/s41598-020-65704-8 |
| 通讯作者 | Ge, Quansheng(geqs@igsnrr.ac.cn) |
| 英文摘要 | Current understanding of autumn phenological responses to climate change in deciduous tree species remains limited, mainly due to the difficulties in defining autumn events and the lack of knowledge about its mechanism. Here we applied a method based on measuring chlorophyll A (Chla) content in leaf tissue during the entire autumn senescence processes to appropriately quantify autumn phenological processes. Beginning of leaf coloring could be defined as when about 50% of the Chl was lost. End of leaf coloring could be defined as when about 95% of the Chl was lost. Then the mechanism behind the timing of autumn senescence responses to climate change through hormone regulation was studied for the first time. Four dominate deciduous tree species with representative senescence type (Salix babylonica, Ginkgo biloba, Acer mono, Cotinus coggygria) were chosen as the subject of study. Variations in climate factors (temperature, day length, precipitation, humidity) were recorded and nine major endogenous hormones (IAA, IPA, ZR, DHZR, GA(3), GA(4), ABA, MeJA, BR) in leaf tissues were monitored during the entire autumn senescence processes. The experimental results verified temperature and day length are the major climate factors affecting autumn phenology. Low temperature and short day length could result in the decrease of ZR level and the increase of ABA level in leaf tissue, which directly trigger/ promote senescence. Meanwhile, low temperature and short day length could cause the decrease of MeJA level and the increase of GA(3) and GA(4) level, which regulate the timing of autumn senescence indirectly through ZR, ABA, and IAA. Our study improves the understanding of autumn phenological response to climate change in deciduous trees. |
| WOS关键词 | LEAF SENESCENCE ; STRESS ; WEATHER ; AUXIN |
| 资助项目 | Strategic Priority Research Program[XDA19040301] ; Chinese Academy of Sciences (CAS) ; National Key R&D Program of China[2018YFA0606102] |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000543961800016 |
| 出版者 | NATURE PUBLISHING GROUP |
| 资助机构 | Strategic Priority Research Program ; Chinese Academy of Sciences (CAS) ; National Key R&D Program of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/162384]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 通讯作者 | Ge, Quansheng |
| 作者单位 | Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Shixi,Dai, Junhu,Ge, Quansheng. Responses of Autumn Phenology to Climate Change and the Correlations of Plant Hormone Regulation[J]. SCIENTIFIC REPORTS,2020,10(1):10. |
| APA | Zhang, Shixi,Dai, Junhu,&Ge, Quansheng.(2020).Responses of Autumn Phenology to Climate Change and the Correlations of Plant Hormone Regulation.SCIENTIFIC REPORTS,10(1),10. |
| MLA | Zhang, Shixi,et al."Responses of Autumn Phenology to Climate Change and the Correlations of Plant Hormone Regulation".SCIENTIFIC REPORTS 10.1(2020):10. |
入库方式： OAI收割
来源：地理科学与资源研究所
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