Arid
DOI10.1111/nph.14436
Clinal population divergence in an adaptive parental environmental effect that adjusts seed banking
Lampei, Christian1,3; Metz, Johannes2; Tielboerger, Katja1
通讯作者Lampei, Christian
来源期刊NEW PHYTOLOGIST
ISSN0028-646X
EISSN1469-8137
出版年2017
卷号214期号:3页码:1230-1244
英文摘要

Bet-hedging via between-year seed dormancy is a costly strategy for plants in unpredictable environments. Theoretically, fitness costs can be reduced through a parental environmental effect when the environment is partly predictable. We tested whether populations from environments that differ in predictability diverged in parental effects on seed dormancy.


Common garden-produced seeds of the two annual plant species Biscutella didyma and Bromus fasciculatus collected along an aridity gradient were grown under 12 irrigation treatments. Offspring germination was evaluated and related to environmental correlations between generations and their fitness consequences at the four study sites.


One species exhibited strong seed dormancy that increased with unpredictability in seasonal precipitation. The parental effect on seed dormancy also increased proportionally with the environmental correlation between precipitation in the parental season and seedling density in the following season; this correlation increased from mesic to arid environments. Because fitness was negatively related to density, this parental effect may be adaptive. However, the lack of dormancy in the second species indicates that bet-hedging is not the only strategy for annual plants in arid environments.


Our results provide the first evidence for clinal variation in the relative strength of parental effects along environmental gradients.


英文关键词bet-hedging clinal variation environmental autocorrelation maternal effect parental effect risk spreading seed dormancy transgenerational plasticity
类型Article
语种英语
国家Germany
收录类别SCI-E
WOS记录号WOS:000402403900029
WOS关键词BET-HEDGING GERMINATION ; ANNUAL PLANTS ; MEDITERRANEAN POPULATIONS ; OPTIMIZING REPRODUCTION ; PHENOTYPIC PLASTICITY ; BREEDING SYSTEMS ; LOCAL ADAPTATION ; DESERT ANNUALS ; WATER-STRESS ; LONG-TERM
WOS类目Plant Sciences
WOS研究方向Plant Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/201249
作者单位1.Univ Tubingen, Plant Ecol Grp, Morgenstelle 5, D-72076 Tubingen, Germany;
2.Univ Potsdam, Plant Ecol & Nat Conservat, Muhlenberg 3, D-14467 Potsdam, Germany;
3.Univ Hohenheim, Dept Crop Biodivers & Breeding Informat 350b, Fruwirthstr 21, D-70599 Stuttgart, Germany
推荐引用方式
GB/T 7714
Lampei, Christian,Metz, Johannes,Tielboerger, Katja. Clinal population divergence in an adaptive parental environmental effect that adjusts seed banking[J],2017,214(3):1230-1244.
APA Lampei, Christian,Metz, Johannes,&Tielboerger, Katja.(2017).Clinal population divergence in an adaptive parental environmental effect that adjusts seed banking.NEW PHYTOLOGIST,214(3),1230-1244.
MLA Lampei, Christian,et al."Clinal population divergence in an adaptive parental environmental effect that adjusts seed banking".NEW PHYTOLOGIST 214.3(2017):1230-1244.
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