Hydrology shapes microbial communities and microbiome‐mediated growth of an Everglades tree island species
Hydrology shapes microbial communities and microbiome‐mediated growth of an Everglades tree island species
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水文学塑造微生物群落和微生物组——介导大沼泽地树岛物种的生长
DOI：
10.1111/rec.13677
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发表时间：
2022
影响因子：
3.2
通讯作者：
Afkhami, Michelle E.
中科院分区：
文献类型：
--
作者：
Almeida, Brianna K.;Cline, Eric;Sklar, Fred;Afkhami, Michelle E.
植物相关微生物组可以通过改善环境胁迫来提高植物适应性，为恢复期间改善外植提供了一条有希望的途径。然而，水管理对这些微生物群落的影响及其对初级生产者的级联效应在许多濒危生态系统中尚未得到解决。其中一个栖息地，大沼泽地的树岛，在一些地区已经减少了54%，将多余的营养物质释放到周围的湿地，加剧了营养污染。我们进行了一项析因实验，操纵了一种树岛原生植物无花果（Ficus aurea）所经历的土壤微生物组和水文制度，以确定微生物组在两种水文管理计划下如何影响生长。所有植物都浇水以模拟自然降水，但“无约束”管理处理允许植物在土壤表面积聚水分，而“有约束”处理减少了阶段，以避免土壤淹没。我们发现微生物组对植物的整体性能和地上投资与地下投资有显著影响；然而，这些影响取决于水文处理。例如，相对于地上组织，微生物组增加了对根系的投资，但这些影响在受约束的情况下比不受约束的情况下强142%。水文变化也导致了原核生物群落组成的变化，包括根瘤菌科的相对丰度增加了100 - 20倍，并且水文变化的微生物组成与植物性能的变化有关。我们的研究结果表明，水文管理的差异可能对微生物群落产生重要影响，包括经常参与氮循环的分类群，这反过来又会影响植物的生长性能。
Plant‐associated microbiomes can improve plant fitness by ameliorating environmental stress, providing a promising avenue for improving outplantings during restoration. However, the effects of water management on these microbial communities and their cascading effects on primary producers are unresolved for many imperiled ecosystems. One such habitat, Everglades tree islands, has declined by 54% in some areas, releasing excess nutrients into surrounding wetlands and exacerbating nutrient pollution. We conducted a factorial experiment, manipulating the soil microbiome and hydrological regime experienced by a tree island native,Ficus aurea, to determine how microbiomes impact growth under two hydrological management plans. All plants were watered to simulate natural precipitation, but plants in the “unconstrained” management treatment were allowed to accumulate water above the soil surface, while the “constrained” treatment had a reduced stage to avoid soil submersion. We found significant effects of the microbiomes on overall plant performance and aboveground versus belowground investment; however, these effects depended on hydrological treatment. For instance, microbiomes increased investment in roots relative to aboveground tissues, but these effects were 142% stronger in the constrained compared to unconstrained water regime. Changes in hydrology also resulted in changes in the prokaryotic community composition, including a >20 log2fold increase in the relative abundance of Rhizobiaceae, and hydrology‐shifted microbial composition was linked to changes in plant performance. Our results suggest that differences in hydrological management can have important effects on microbial communities, including taxa often involved in nitrogen cycling, which can in turn impact plant performance.
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八种大沼泽地树种沿着两种树岛类型的实验水文梯度的生存和生长响应。
DOI：
--
发表时间：
2010
期刊：
影响因子：
--
作者：
Susana L. Stoffella;M. Ross;J. Sah;R. Price;P. Sullivan;E. Cline;L. Scinto
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影响因子：
1.8
作者：
R. F. Doren;T. Armentano;L. Whiteaker;Ronald D. Jones
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Ronald D. Jones
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DOI：
--
发表时间：
2006
期刊：
Wetlands (Wilmington, N.C.)
影响因子：
--
作者：
David T. Jones;J. Sah;M. Ross;S. Oberbauer;Bernice C. Hwang;K. Jayachandran
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K. Jayachandran
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DOI：
--
发表时间：
2017
期刊：
影响因子：
--
作者：
P. Wetzel;J. Sah;M. Ross
通讯作者：
M. Ross
干旱遗留影响与沿稀树草原降水梯度的湿度相关的微生物群落性状分布
影响因子：
5.5
作者：
A. Leizeaga;L. Hicks;L. Manoharan;C. Hawkes;J. Rousk
通讯作者：
J. Rousk