Cheating in arbuscular mycorrhizal mutualism: a network and phylogenetic analysis of mycoheterotrophy

被引:32
作者
Perez-Lamarque, Benoit [1 ,2 ]
Selosse, Marc-Andre [1 ,3 ]
Opik, Maarja [4 ]
Morlon, Helene [2 ]
Martos, Florent [1 ]
机构
[1] Univ Antilles, Sorbonne Univ, Inst Systemat Evolut Biodiversit ISYEB, Museum Natl Hist Nat,CNRS,EPHE, CP39,57 Rue Cuvier, F-75005 Paris, France
[2] Univ PSL, CNRS, Ecole Normale Super, Inst Biol Ecole Normale Super IBENS,INSERM, F-75005 Paris, France
[3] Univ Gdansk, Dept Plant Taxon & Nat Conservat, Wita Stwosza 59, PL-80308 Gdansk, Poland
[4] Univ Tartu, 40 Lai St, EE-51005 Tartu, Estonia
基金
欧洲研究理事会;
关键词
arbuscular mycorrhiza; cheating; ecological networks; mutualism; mycoheterotrophy; phylogenetic constraint; reciprocal specialization; EVOLUTIONARY STABILITY; CHEATERS; ECOLOGY; FUNGI; ASSOCIATIONS; ARCHITECTURE; COMMUNITIES; DIVERSITY; SYMBIONTS; ROOTS;
D O I
10.1111/nph.16474
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Although mutualistic interactions are widespread and essential in ecosystem functioning, the emergence of uncooperative cheaters threatens their stability, unless there are some physiological or ecological mechanisms limiting interactions with cheaters. In this framework, we investigated the patterns of specialization and phylogenetic distribution of mycoheterotrophic cheaters vs noncheating autotrophic plants and their respective fungi, in a global arbuscular mycorrhizal network with> 25 000 interactions. We show that mycoheterotrophy evolved repeatedly among vascular plants, suggesting low phylogenetic constraints for plants. However, mycoheterotrophic plants are significantly more specialized than autotrophic plants, and they tend to be associated with specialized and closely related fungi. These results raise new hypotheses about the mechanisms (e.g. sanctions, or habitat filtering) that actually limit the interaction of mycoheterotrophic plants and their associated fungi with the rest of the autotrophic plants. Beyond mycorrhizal symbiosis, this unprecedented comparison of mycoheterotrophic vs autotrophic plants provides a network and phylogenetic framework to assess the presence of constraints upon cheating emergences in mutualisms.
引用
收藏
页码:1822 / 1835
页数:14
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