期刊
PLANT DIRECT
卷 3, 期 3, 页码 -出版社
JOHN WILEY & SONS LTD
DOI: 10.1002/pld3.125
关键词
arbuscular mycorrhiza; disease-resistance genes; ectomycorrhiza; R-genes; rhizobia; symbiosis
资金
- Bard College at Simon's Rock through summer student research fellowships
- National Science Foundation [MCB-1826903]
Immune perception in flowering plants is mediated by a repertoire of cytoplasmic and cell-surface receptors that detect invading microbes and their effects on cells. Here, we show that several large families of immune receptors exhibit size variations related to a plant's competence to host symbiotic root fungi (mycorrhiza). Plants that do not participate in mycorrhizal associations have significantly smaller immune repertoires, while the most promiscuous symbiotic hosts (ectomycorrhizal plant species) have significantly larger immune repertoires. By contrast, we find no significant increase in immune repertoire size among legumes competent to form a symbiosis with nitrogen-fixing bacteria (rhizobia). To explain these observations, we hypothesize that plant immune repertoire size expands with symbiote species diversity.
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