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题名: Seed Germination Indicates Adaptive Transgenerational Plasticity in a Submerged Macrophyte
作者: Su, Hong1, 2; Zhu, Tianshun3; Bai, Xiaohu4; Ni, Leyi1; Xie, Ping1; Zhang, Xiaolin1
关键词: transgenerational plasticity ; submerged macrophyte ; seed germination ; water depth ; adaptive characters ; trade-offs
刊名: FRONTIERS IN PLANT SCIENCE
发表日期: 2018-11-21
DOI: 10.3389/fpls.2018.01592
卷: 9
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Plant Sciences
研究领域[WOS]: Plant Sciences
英文摘要: Adaptive transgenerational plasticity is an important evolutionary strategy in plants. We investigated the resource allocation strategy in sexual reproduction and performed an in situ seed germination experiment of Potamogeton maackianus to reveal their responses to different water depths. Later, we discussed the biased adaptability to the maternal habitat in this species. We found a positive correlation between sexual and asexual reproduction in water depths from 1.0 m to 3.0 m, such a correlation failed to occur in 4.0 m water depth. These results indicate that the trade-off between sexual and asexual reproduction should only be expected in a stressful habitat, where resource acquisition is limited. For trade-off between quantity and quality of sexual units in different water depths, P. maackianus tends to produce more but lower quality sexual reproductive units in shallow water, and fewer but higher quality sexual units are found in deep water. The total germination percentage of seeds of P. maackianus was relatively poor, less than 46.65% in all of the treatments. The maximum germination percentage of seeds from 1.0 m, 2.0 m, 3.0 m, and 4.0 m water depths are 14.4%, 17.75%, 25.51%, and 46.65%, respectively. Seeds with higher germination percentage were from deeper water depths. The most interesting result was that the maximum final germination percentage occurred only when treatment water depth was the same as collection water depth. Our result showed that the variations in germination characters of the studied species appear to be based partly on the effects of maternal environmental factors. Our findings proved the adaptive transgenerational plasticity in P. maackianus, which will play an important role in evolutionary response to the selection of water depths.
关键词[WOS]: PLANT CAMPANULA-AMERICANA ; PONDWEED POTAMOGETON-PECTINATUS ; LIFE-HISTORY ; WATER DEPTH ; AQUATIC PLANT ; TRADE-OFFS ; PHENOTYPIC PLASTICITY ; SEXUAL REPRODUCTION ; CLONAL REPRODUCTION ; GENETIC DIVERSITY
语种: 英语
项目资助者: National Key Research and Development Program of China(2017YFA0605203) ; National Natural Science Foundation of China(31200356)
WOS记录号: WOS:000450779000001
ISSN号: 1664-462X
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/56086
Appears in Collections:淡水生态学研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan, Hubei, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Zaozhuang Univ, Coll Life Sci, Zaozhuang, Peoples R China
4.Xinjiang Acad Environm Protect Sci, Urumqi, Peoples R China
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