期刊
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
卷 269, 期 1492, 页码 685-694出版社
ROYAL SOC
DOI: 10.1098/rspb.2001.1878
关键词
coevolution; kin selection; mycorrhizae; parasite; symbiosis; virulence
Why do rhizobia expend resources on fixing N-2 for the benefit of their host plant, when they could use those resources for their own reproduction? We present a series of theoretical models which counter the hypotheses that N-2 fixation is favoured because it (i) increases the exudation of useful resources to related rhizobia in the nearby soil, or (ii) increases plant growth and therefore the resources available for rhizobia growth. Instead, we suggest that appreciable levels of N-2 fixation are only favoured when plants preferentially supply more resources to (or are less likely to senesce) nodules that are fixing more N2 (termed plant sanctions). The implications for different agricultural practices and mutualism stability in general are discussed.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据