A suite of rare microbes interacts with a dominant, heritable, fungal endophyte to influence plant trait expression

A suite of rare microbes interacts with a dominant, heritable, fungal endophyte to influence plant trait expression
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一系列稀有微生物与显性的、可遗传的内生真菌相互作用,影响植物性状的表达

DOI:
10.1101/608729
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发表时间:
2021
期刊:
The ISME journal
影响因子:
--
通讯作者:
Harrison, Joshua G.
Harrison, Joshua G.
中科院分区:
--
文献类型:
--
作者:
Harrison, Joshua G.

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内生菌是至少部分生命史生活在植物组织内的微生物。内生菌组合通常由一些丰富的类群和许多不常观察到的低生物量类群组成,总而言之,这些类群是稀有的。大多数内生菌影响宿主表型的方式尚不清楚。然而,某些优势内生菌可以以具有生态意义的方式影响植物,包括影响生长和免疫系统功能。相比之下,稀有内生菌对其宿主的影响尚未被探索,包括稀有内生菌如何与丰富的内生菌相互作用以塑造植物表型。在这里,我们操纵了豆科黄芪中的一组罕见的叶内生真菌(包括真菌和细菌)和黑斑病菌(一种垂直传播且通常含量丰富的真菌)。我们报告说,罕见的低生物量内生菌会影响寄主大小和叶%N,但前提是不存在可遗传的内生真菌(A. fulva)。黄腐菌还减少了植物的大小和%N,但是这些对宿主的有害影响可以通过我们观察到的这种遗传真菌和叶病原体之间的负相关性来抵消。这些结果证明了内生类群之间的相互作用如何决定对寄主植物的净影响,并表明植物叶子内的无数稀有内生菌可能不仅仅是无影响的共生生物的集合,而是具有有意义的生态作用。
Endophytes are microbes that live, for at least a portion of their life history, within plant tissues. Endophyte assemblages are often composed of a few abundant taxa and many infrequently observed, low-biomass taxa that are, in a word, rare. The ways in which most endophytes affect host phenotype are unknown; however, certain dominant endophytes can influence plants in ecologically meaningful ways—including by affecting growth and immune system functioning. In contrast, the effects of rare endophytes on their hosts have been unexplored, including how rare endophytes might interact with abundant endophytes to shape plant phenotype. Here, we manipulate both the suite of rare foliar endophytes (including both fungi and bacteria) andAlternaria fulva–a vertically transmitted and usually abundant fungus–within the fabaceous forbAstragalus lentiginosus. We report that rare, low-biomass endophytes affected host size and foliar %N, but only when the heritable fungal endophyte (A. fulva) was not present.A. fulvaalso reduced plant size and %N, but these deleterious effects on the host could be offset by a negative association we observed between this heritable fungus and a foliar pathogen. These results demonstrate how interactions among endophytic taxa determine the net effects on host plants and suggest that the myriad rare endophytes within plant leaves may be more than a collection of uninfluential, commensal organisms, but instead have meaningful ecological roles.
DOI: 10.1002/ece3.953
发表时间: 2014-04
影响因子: 2.6
作者:
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DOI: --
发表时间: 2000
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发表时间: 2013-04
影响因子: 4.1
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DOI: 10.1094/pd-71-0248
发表时间: 1987
期刊: Plant Disease
影响因子: 4.5
作者:
J. Correll;T. Gordon;V. J. Elliott
通讯作者: V. J. Elliott