Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1111/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
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ISSN | 0028-646X |
EISSN | 1469-8137 |
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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