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Phylogenetic signals and predictability in plant-soil feedbacks.
New Phytologist ( IF 9.4 ) Pub Date : 2020-07-03 , DOI: 10.1111/nph.16768
Elizabeth M Wandrag 1, 2, 3 , Sarah E Bates 1 , Luke G Barrett 4 , Jane A Catford 5, 6 , Peter H Thrall 4 , Wim H van der Putten 3, 7 , Richard P Duncan 1
Affiliation  

  • There is strong evidence for a phylogenetic signal in the degree to which species share co‐evolved biotic partners and in the outcomes of biotic interactions. This implies there should be a phylogenetic signal in the outcome of feedbacks between plants and the soil microbiota they cultivate. However, attempts to identify a phylogenetic signal in plant–soil feedbacks have produced mixed results.
  • Here we clarify how phylogenetic signals could arise in plant–soil feedbacks and use a recent compilation of data from feedback experiments to identify: whether there is a phylogenetic signal in the outcome of plant–soil feedbacks; and whether any signal arises through directional or divergent changes in feedback outcomes with evolutionary time.
  • We find strong evidence for a divergent phylogenetic signal in feedback outcomes. Distantly related plant species show more divergent responses to each other’s soil microbiota compared with closely related plant species. The pattern of divergence implies occasional co‐evolutionary shifts in how plants interact with soil microbiota, with strongly contrasting feedback responses among some plant lineages.
  • Our results highlight that it is difficult to predict feedback outcomes from phylogeny alone, other than to say that more closely related species tend to have more similar responses.


中文翻译:

系统发育信号和植物-土壤反馈的可预测性。

  • 有强有力的证据表明,系统发育信号涉及物种共享共同进化的生物伙伴的程度以及生物相互作用的结果。这意味着植物与其种植的土壤微生物之间的反馈结果中应该存在系统发育信号。但是,尝试在植物-土壤反馈中识别系统发育信号的结果却好坏参半。
  • 在这里,我们阐明了植物-土壤反馈中如何产生系统发育信号,并使用反馈实验的最新数据汇编来确定:植物-土壤反馈结果中是否存在系统发育信号;以及是否有任何信号是由于进化过程中反馈结果的方向性或发散性变化而产生的。
  • 我们发现有力的证据表明反馈结果中存在不同的系统发育信号。与密切相关的植物物种相比,远近相关的植物物种对彼此的土壤微生物群的反应差异更大。分歧的模式意味着植物与土壤微生物群相互作用的偶然的共同进化转变,与某些植物谱系之间的反馈响应形成强烈反差。
  • 我们的结果表明,仅凭系统发育就很难预测反馈结果,除了说关系更密切的物种往往具有更相似的响应外,还很难。
更新日期:2020-07-03
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