Traits of soil bacteria predict plant responses to soil moisture

Traits of soil bacteria predict plant responses to soil moisture
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土壤细菌的特征预测植物对土壤湿度的反应

DOI:
10.1002/ecy.3893
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发表时间:
2022
期刊:
影响因子:
4.8
通讯作者:
Lau, Jennifer A.
Lau, Jennifer A.
中科院分区:
环境科学与生态学1区
文献类型:
--
作者:
Bolin, Lana G.;Lennon, Jay T.;Lau, Jennifer A.

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微生物可以帮助植物和动物应对非生物应激源,但它们为什么能提供这样的好处尚不清楚。在这里,我们调查了副产品收益,当增加一个物种适合度的特征为另一个物种提供附带收益时,就会发生副产品收益,而不会给提供者带来直接成本。在温室实验中,微生物性状预测了植物对土壤水分的反应,干旱中具有自利性状的细菌在干旱时增加了植物的早期生长、繁殖时的大小和叶绿素浓度,而在水分充足的环境中具有自利性状的细菌在水分充足的土壤中增加了这些相同的植物性状。因此,在不同的水分环境中促进微生物成功的微生物特征也会促进植物在这些相同环境中的成功。我们的结果表明,副产品效益--一个解释成对互惠关系中合作进化的概念--也可以扩展到植物和非共生土壤微生物之间的相互作用。
Microorganisms can help plants and animals contend with abiotic stressors, but why they provide such benefits remains unclear. Here we investigated byproduct benefits, which occur when traits that increase the fitness of one species provide incidental benefits to another species with no direct cost to the provider. In a greenhouse experiment, microbial traits predicted plant responses to soil moisture such that bacteria with self‐beneficial traits in drought increased plant early growth, size at reproduction, and chlorophyll concentration under drought, while bacteria with self‐beneficial traits in well‐watered environments increased these same plant traits in well‐watered soils. Thus, microbial traits that promote microbial success in different moisture environments also promote plant success in these same environments. Our results demonstrate that byproduct benefits, a concept developed to explain the evolution of cooperation in pairwise mutualisms, can also extend to interactions between plants and nonsymbiotic soil microbes.
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