Can functional genomic diversity provide novel insights into mechanisms of community assembly? A pilot study from an invaded alpine streambed.
Can functional genomic diversity provide novel insights into mechanisms of community assembly? A pilot study from an invaded alpine streambed.
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DOI：
10.1002/ece3.7973
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发表时间：
2021-09
影响因子：
2.6
通讯作者：
Tank DC
中科院分区：
文献类型：
--
作者：
Marx HE;Carboni M;Douzet R;Perrier C;Delbart F;Thuiller W;Lavergne S;Tank DC
群落生态学（包括入侵生物学）的一个重要焦点是研究功能性状多样性模式，以理清环境和生物相互作用的影响。然而，一个显着的局限性是，研究通常依赖于一组小的且易于测量的功能特征，这些特征可能无法立即反映对不断变化的非生物或生物条件的持续生态反应，包括在分子或生理水平上发生的反应。我们探索了利用表达基因的多样性——功能基因组多样性（FGD）——来了解最近和正在进行的高山入侵的生态动态的潜力。我们根据对邻近受入侵河床和原始河床生长的 26 种植物的转录组数据进行了 FGD 量化。我们使用 RNA-seq 方法总结了表达转录本的总数及其对功能类别的注释，并将其与根据植物生态学中传统上考虑的一系列特征测量的功能性状多样性 (FTD) 进行了对比。我们发现入侵群落中的 FGD 和 FTD 更高，与物种丰富度的差异无关。然而，从 FGD 的角度来看，功能分散的程度比从 FTD 的角度来看更大。比较同源外来物种与本地物种对之间的 FGD，我们没有发现注释与功能类别匹配的基因比例存在显着差异。尽管如此，与原始物种相比，入侵群落中相对丰度较高的本地物种往往在入侵群落中以显着水平表达更大比例的基因，这表明 FGD 的变化可能与群落组成的变化有关。从群落到物种水平的多样性模式的比较提供了对驱动入侵动态的过程和机制的补充见解。 FGD 有潜力揭示生态多样性的神秘变化，我们预见到未来跨分类水平和宏观生态系统的扩展有希望的途径。功能特征多样性模式对于理解社区如何应对变化至关重要。我们探索了被入侵的高山生态系统中功能基因组特征的多样性，揭示了神秘的功能多样性，有助于理清入侵生物学和群落组装的有争议的假设。
An important focus of community ecology, including invasion biology, is to investigate functional trait diversity patterns to disentangle the effects of environmental and biotic interactions. However, a notable limitation is that studies usually rely on a small and easy‐to‐measure set of functional traits, which might not immediately reflect ongoing ecological responses to changing abiotic or biotic conditions, including those that occur at a molecular or physiological level. We explored the potential of using the diversity of expressed genes—functional genomic diversity (FGD)—to understand ecological dynamics of a recent and ongoing alpine invasion. We quantified FGD based on transcriptomic data measured for 26 plant species occurring along adjacent invaded and pristine streambeds. We used an RNA‐seq approach to summarize the overall number of expressed transcripts and their annotations to functional categories, and contrasted this with functional trait diversity (FTD) measured from a suite of characters that have been traditionally considered in plant ecology. We found greater FGD and FTD in the invaded community, independent of differences in species richness. However, the magnitude of functional dispersion was greater from the perspective of FGD than from FTD. Comparing FGD between congeneric alien–native species pairs, we did not find many significant differences in the proportion of genes whose annotations matched functional categories. Still, native species with a greater relative abundance in the invaded community compared with the pristine tended to express a greater fraction of genes at significant levels in the invaded community, suggesting that changes in FGD may relate to shifts in community composition. Comparisons of diversity patterns from the community to the species level offer complementary insights into processes and mechanisms driving invasion dynamics. FGD has the potential to illuminate cryptic changes in ecological diversity, and we foresee promising avenues for future extensions across taxonomic levels and macro‐ecosystems. Functional trait diversity patterns have been central for understanding how communities respond to change. We explore the diversity of functional genomic traits in an invaded alpine ecosystem, exposing cryptic functional diversity that helps disentangle controversial hypotheses of invasion biology and community assembly.
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影响因子：
16.6
作者：
Divíšek J;Chytrý M;Beckage B;Gotelli NJ;Lososová Z;Pyšek P;Richardson DM;Molofsky J
通讯作者：
Molofsky J
影响因子：
5.3
作者：
Broz, Amanda K.;Manter, Daniel K.;Vivanco, Jorge M.
通讯作者：
Vivanco, Jorge M.
影响因子：
5.9
作者：
de Bello, Francesco;Lavorel, Sandra;Thuiller, Wilfried
通讯作者：
Thuiller, Wilfried
DOI：
10.1073/pnas.1011728108
发表时间：
2011-01-04
影响因子：
11.1
作者：
Essl, Franz;Dullinger, Stefan;Pysek, Petr
通讯作者：
Pysek, Petr
影响因子：
11.6
作者：
Bellard C;Thuiller W;Leroy B;Genovesi P;Bakkenes M;Courchamp F
通讯作者：
Courchamp F