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DOI10.1111/nph.12191
Physical dormancy in seeds: a game of hide and seek?
Paulsen, Torbjorn Rage1,2; Colville, Louise3; Kranner, Ilse3,4; Daws, Matthew I.3,5; Hogstedt, Goran1; Vandvik, Vigdis1; Thompson, Ken6
通讯作者Paulsen, Torbjorn Rage
来源期刊NEW PHYTOLOGIST
ISSN0028-646X
EISSN1469-8137
出版年2013
卷号198期号:2页码:496-503
英文摘要

Historically, physical dormancy’, or hard seededness’, where seeds are prevented from germinating by a water-impermeable seed coat, is viewed as a dormancy mechanism. However, upon water uptake, resumption of metabolism leads to the unavoidable release of volatile by-products, olfactory cues that are perceived by seed predators. Here, we examine the hypothesis that hard seeds are an anti-predator trait that evolved in response to powerful selection by small mammal seed predators. Seeds of two legume species with dimorphic seeds (hard’ and soft’), Robinia pseudoacacia and Vicia sativa, were offered to desert hamsters (Phodopus roborovskii) in a series of seed removal studies examining the differences in seed harvest between hard and soft seeds. Volatile compounds emitted by dry and imbibed soft seeds were identified by headspace gas chromatographymass spectrometry (GC-MS). Fourteen main volatile compounds were identified, and hamsters readily detected both buried imbibed seeds and an artificial volatile cocktail’ that mimicked the scent of imbibed seeds, but could not detect buried hard or dry soft seeds. We argue that physical dormancy has evolved to hide seeds from mammalian predators. This hypothesis also helps to explain some otherwise puzzling features of hard seeds and has implications for seed dispersal.


英文关键词dormancy granivore predation seed volatile compounds
类型Article
语种英语
国家Norway ; England ; Austria ; Australia
收录类别SCI-E
WOS记录号WOS:000316629500018
WOS关键词GRANIVOROUS RODENTS ; BURIED SEEDS ; SOIL ; DETERIORATION ; PERSISTENCE ; DISPERSAL ; OLFACTION ; PREDATION ; SUCCESS ; TRAITS
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/2XILL650/179033
作者单位1.Univ Bergen, Dept Biol, N-5020 Bergen, Norway;
2.Univ Bergen, Dept Mol Biol, N-5020 Bergen, Norway;
3.Royal Bot Gardens Kew, Seed Conservat Dept, Ardingly RH17 6TN, W Sussex, England;
4.Univ Innsbruck, Inst Bot, A-6020 Innsbruck, Austria;
5.ALCOA Australia Proprietary Ltd, Pinjarra, WA 6208, Australia;
6.Univ Sheffield, Dept Anim & Plant Sci, Sheffield S10 2TN, S Yorkshire, England
推荐引用方式
GB/T 7714
Paulsen, Torbjorn Rage,Colville, Louise,Kranner, Ilse,et al. Physical dormancy in seeds: a game of hide and seek?[J],2013,198(2):496-503.
APA Paulsen, Torbjorn Rage.,Colville, Louise.,Kranner, Ilse.,Daws, Matthew I..,Hogstedt, Goran.,...&Thompson, Ken.(2013).Physical dormancy in seeds: a game of hide and seek?.NEW PHYTOLOGIST,198(2),496-503.
MLA Paulsen, Torbjorn Rage,et al."Physical dormancy in seeds: a game of hide and seek?".NEW PHYTOLOGIST 198.2(2013):496-503.
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