Dynamics of the diaspore and germination stages of the life history of an annual diaspore-trimorphic species in a temperate salt desert
文献类型：期刊论文
| 作者 | Wang, Zhaoren3,4; Baskin, Jerry M.; Baskin, Carol C.; Yang, Xuejun4; Liu, Guofang4; Huang, Zhenying4 |
| 刊名 | PLANTA
 |
| 出版日期 | 2020 |
| 卷号 | 251期号:4 |
| ISSN号 | 0032-0935 |
| 关键词 | Atriplex centralasiatica Bet-hedging strategy Dispersal Dormancy cycle Diaspore heteromorphism Seedbank |
| DOI | 10.1007/s00425-020-03380-8 |
| 文献子类 | Article |
| 英文摘要 | Main conclusion Individuals of the annual halophyte Atriplex centralasiatica produce three kinds of diaspores that differ in dispersal, dormancy/germination response and type of seed bank formed, which likely is a bet-hedging strategy in the rainfall-unpredictable environment on the semi-arid, saline Ordos Plateau in Inner Mongolia, China. Seasonal fluctuations in environmental conditions provide germination cues for the establishment of seedlings at the right time and place to ensure plant survival and population regeneration. Diaspore heteromorphism is a phenomenon in which diaspores with stark qualitative differences in morphology and ecology are produced by the same maternal plant. Germination responses and dispersal times of the annual halophyte Atriplex centralasiatica were examined to determine the role of diaspore heteromorphism in its adaptation to salt desert conditions. A. centralasiatica is a tumbleweed that produces three types of diaspores that differ in morphology and ecophysiology. The relative potential dispersal ability and intensity of dormancy of the three diaspore types was type A (fan-shaped diaspores with yellow fruits) < type B (fan-shaped diaspores with black fruits) < type C (globular diaspores with black fruits). In the field, type A retained high germinability, but all of them were depleted from the (transient) soil seedbank in the first growing season. Types B and C cycled between dormancy and nondormancy, and 0 and > 90.0% remained in the soil seedbank 2 years after dispersal, respectively. The dormancy, dispersal and salt tolerance of type B diaspores were intermediate between those of A and C. Type A exhibited low dispersal-nondormancy, type B exhibited intermediate dispersal-intermediate dormancy and type C exhibited high dispersal ability-high dormancy. In the unpredictable salt desert habitat, the functional differences in germination and dispersal of the three diaspores act as a bet-hedging mechanism and ensure population establishment in different years by spreading germination over time and space. |
| 学科主题 | Plant Sciences |
| 电子版国际标准刊号 | 1432-2048 |
| 出版地 | NEW YORK |
| WOS关键词 | ATRIPLEX-CENTRALASIATICA ; DIMORPHIC SEEDS ; DISPERSAL ; ECOLOGY ; DORMANCY ; BANKS ; CONSEQUENCES ; ADAPTATION ; BRACTEOLES ; SYSTEM |
| WOS研究方向 | Plant Sciences |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000522418000001 |
| 资助机构 | Key Basic Research and Development Plan of ChinaNational Basic Research Program of China [2016YFC0500805-02] ; National Natural Science Foundation of P. R. ChinaNational Natural Science Foundation of China (NSFC) [31870711, 31861143024] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/21841]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Baskin, Jerry M.; Baskin, Carol C.] Univ Kentucky, Dept Biol, Lexington, KY 40506 USA 3.Baskin, Carol C.] Univ Kentucky, Dept Plant & Soil Sci, Lexington, KY 40546 USA 4.Univ Chinese Acad Sci, Beijing 100039, Peoples R China 5.Chinese Acad Sci, Inner Mongolia Res Ctr Prataculture, Beijing 100093, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Zhaoren,Baskin, Jerry M.,Baskin, Carol C.,et al. Dynamics of the diaspore and germination stages of the life history of an annual diaspore-trimorphic species in a temperate salt desert[J]. PLANTA,2020,251(4). |
| APA | Wang, Zhaoren,Baskin, Jerry M.,Baskin, Carol C.,Yang, Xuejun,Liu, Guofang,&Huang, Zhenying.(2020).Dynamics of the diaspore and germination stages of the life history of an annual diaspore-trimorphic species in a temperate salt desert.PLANTA,251(4). |
| MLA | Wang, Zhaoren,et al."Dynamics of the diaspore and germination stages of the life history of an annual diaspore-trimorphic species in a temperate salt desert".PLANTA 251.4(2020). |
入库方式： OAI收割
来源：植物研究所
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