The impact of intra-specific diversity in the rhizobia-legume symbiosis.
The impact of intra-specific diversity in the rhizobia-legume symbiosis.
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DOI：
10.1099/mic.0.001051
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发表时间：
2021-04
期刊：
影响因子：
--
通讯作者：
Harrison E
中科院分区：
文献类型：
--
作者：
Fields B;Moffat EK;Friman VP;Harrison E
根瘤菌——固氮、根结细菌——在植物生态系统和可持续农业中发挥着关键作用。根瘤菌在豆科植物根部形成细胞内感染，从大气中的氮中产生植物可利用的氮，从而减少对工业投入的依赖。在研究和根瘤菌接种剂的生产中，根瘤菌-豆科植物共生通常被视为单个基因型之间的成对关系。然而，在自然界中，单个植物会受到高度多样性的根瘤菌共生体的感染。这种多样性如何影响共生中的生产力尚不清楚。在这里，我们利用生物多样性-生态系统功能框架，使用强大的统计方法来评估豆根瘤菌-三叶草共生体内多样性的影响。从统计上看，我们发现根瘤菌多样性没有显着影响。然而，这种关系是弱正关系，而不是负关系，表明增加接种剂多样性没有显着成本。生产力受到接种剂内菌株特性的影响；具有最高个体性能的菌株在混合接种剂中表现出显着的积极贡献。总体而言，最好的接种剂成员的个人表现可以最好地预测接种剂的有效性，而表现最差的成员只能微弱地预测接种剂的有效性。总的来说，我们的数据表明豆根瘤菌-三叶草共生表现出较弱的多样性-功能关系，但可以通过纳入高性能菌株来提高接种剂的性能。鉴于根瘤菌接种剂质量对环境的广泛依赖性，多菌株接种剂可能会非常成功，因为它们增加了包含能够很好地适应不同环境中当地条件的菌株的可能性。
Rhizobia - nitrogen-fixing, root-nodulating bacteria - play a critical role in both plant ecosystems and sustainable agriculture. Rhizobia form intracellular infections within legumes roots where they produce plant accessible nitrogen from atmospheric nitrogen and thus reduce the reliance on industrial inputs. The rhizobia-legume symbiosis is often treated as a pairwise relationship between single genotypes, both in research and in the production of rhizobial inoculants. However in nature individual plants are infected by a high diversity of rhizobia symbionts. How this diversity affects productivity within the symbiosis is unclear. Here, we use a powerful statistical approach to assess the impact of diversity within the Rhizobium leguminosarum - clover symbiosis using a biodiversity-ecosystem function framework. Statistically, we found no significant impact of rhizobium diversity. However this relationship was weakly positive - rather than negative - indicating that there is no significant cost to increasing inoculant diversity. Productivity was influenced by the identity of the strains within an inoculant; strains with the highest individual performance showed a significant positive contribution within mixed inoculants. Overall, inoculant effectiveness was best predicted by the individual performance of the best inoculant member, and only weakly predicted by the worst performing member. Collectively, our data suggest that the Rhizobium leguminosarum - clover symbiosis displays a weak diversity-function relationship, but that inoculant performance can be improved through the inclusion of high performing strains. Given the wide environmental dependence of rhizobial inoculant quality, multi-strain inoculants could be highly successful as they increase the likelihood of including a strain well adapted to local conditions across different environments.
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影响因子：
3.5
作者：
Young JPW;Moeskjær S;Afonin A;Rahi P;Maluk M;James EK;Cavassim MIA;Rashid MH;Aserse AA;Perry BJ;Wang ET;Velázquez E;Andronov EE;Tampakaki A;Flores Félix JD;Rivas González R;Youseif SH;Lepetit M;Boivin S;Jorrin B;Kenicer GJ;Peix Á;Hynes MF;Ramírez-Bahena MH;Gulati A;Tian CF
通讯作者：
Tian CF
影响因子：
5.5
作者：
Barrett, Luke G.;Bever, James D.;Thrall, Peter H.
通讯作者：
Thrall, Peter H.
影响因子：
9.4
作者：
Vogelsang, Keith M.;Reynolds, Heather L.;Bever, James D.
通讯作者：
Bever, James D.
影响因子：
7.4
作者：
Graham, PH;Vance, CP
通讯作者：
Vance, CP
影响因子：
2.1
作者：
Kyei-Boahen, S;Nleya, T;Walley, FL
通讯作者：
Walley, FL