Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1086/671058 |
Phenotypic Selection Favors Missing Trait Combinations in Coexisting Annual Plants | |
Kimball, Sarah1; Gremer, Jennifer R.2; Huxman, Travis E.3; Venable, D. Lawrence2; Angert, Amy L.4 | |
通讯作者 | Kimball, Sarah |
来源期刊 | AMERICAN NATURALIST |
ISSN | 0003-0147 |
出版年 | 2013 |
卷号 | 182期号:2页码:191-207 |
英文摘要 | Trade-offs among traits are important for maintaining biodiversity, but the role of natural selection in their construction is not often known. It is possible that trade-offs reflect fundamental constraints, negative correlational selection, or directional selection operating on costly, redundant traits. In a Sonoran Desert community of winter annual plants, we have identified a trade-off between relative growth rate and water-use efficiency among species, such that species with high relative growth rate have low water-use efficiency and vice versa. We measured selection on water-use efficiency, relative growth rate, and underlying traits within populations of four species at two study sites with different average climates. Phenotypic trait correlations within species did not match the among-species trade-off. In fact, for two species with high water-use efficiency, individuals with high relative growth rate also had high water-use efficiency. All populations experienced positive directional selection for water-use efficiency and relative growth rate. Selection tended to be stronger on water-use efficiency at the warmer and drier site, and selection on relative growth rate tended to be stronger at the cooler and wetter site. Our results indicate that directional natural selection favors a phenotype not observed among species in the community, suggesting that the among-species trade-off could be due to pervasive genetic constraints, perhaps acting in concert with processes of community assembly. |
英文关键词 | trade-offs phenotypic selection analysis Sonoran Desert winter annual plants relative growth rate water-use efficiency |
类型 | Article |
语种 | 英语 |
国家 | USA ; Canada |
收录类别 | SCI-E |
WOS记录号 | WOS:000321703400009 |
WOS关键词 | WATER-USE EFFICIENCY ; PHOTOSYNTHESIS-NITROGEN RELATIONS ; CARBON-ISOTOPE DISCRIMINATION ; DESERT WINTER ANNUALS ; HISTORY TRADE-OFFS ; LEAF GAS-EXCHANGE ; NATURAL-SELECTION ; ECOPHYSIOLOGICAL TRAITS ; GENETIC-VARIATION ; SONORAN DESERT |
WOS类目 | Ecology ; Evolutionary Biology |
WOS研究方向 | Environmental Sciences & Ecology ; Evolutionary Biology |
来源机构 | University of Arizona |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/175675 |
作者单位 | 1.Univ Calif Irvine, Sch Biol Sci, Ctr Environm Biol, Irvine, CA 92697 USA; 2.Univ Arizona, Dept Ecol & Evolutionary Biol, Tucson, AZ 85721 USA; 3.Univ Calif Irvine, Dept Ecol & Evolutionary Biol, Irvine, CA 92697 USA; 4.Univ British Columbia, Dept Bot & Zool, Vancouver, BC V6T 1Z4, Canada |
推荐引用方式 GB/T 7714 | Kimball, Sarah,Gremer, Jennifer R.,Huxman, Travis E.,et al. Phenotypic Selection Favors Missing Trait Combinations in Coexisting Annual Plants[J]. University of Arizona,2013,182(2):191-207. |
APA | Kimball, Sarah,Gremer, Jennifer R.,Huxman, Travis E.,Venable, D. Lawrence,&Angert, Amy L..(2013).Phenotypic Selection Favors Missing Trait Combinations in Coexisting Annual Plants.AMERICAN NATURALIST,182(2),191-207. |
MLA | Kimball, Sarah,et al."Phenotypic Selection Favors Missing Trait Combinations in Coexisting Annual Plants".AMERICAN NATURALIST 182.2(2013):191-207. |
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