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研究揭示全球植物形态和功能谱中的细根性状
2021-10-09 13:43

爱沙尼亚塔尔图大学Carlos P. Carmona等研究人员揭示全球植物形态和功能谱中的细根性状。2021年9月29日出版的《自然》杂志发表了这项成果。

研究人员表示,植物性状决定了单个植物如何应对异质环境。尽管单个性状有很大的变异性,但性状的协调和权衡导致一些性状组合比其他性状更普遍,这一点在植物形态和功能的全球谱(GSPFF)以及地面和细根性状的根系经济空间(RES)中分别有所体现。

研究人员将定义这两个功能空间的性状结合起来。分析证实了GSPFF的主要趋势,并表明RES捕获了额外的信息。解释数据集中的非冗余信息所需的四个维度可以概括为地上部分和细根部分,分别对应于GSPFF和RES。这两个平面都显示了高水平的物种聚集,但在不包括任何尺寸相关性状的细根平面上,生长形式、科和生物群落之间的分化要比地上平面低。因此,许多具有类似细根综合征的物种显示出截然不同的地面性状。这突出了在探索不同的自然选择压力和整个植物性状整合之间的相互作用时,将地下器官纳入GSPFF的重要性。

附:英文原文

Title: Fine-root traits in the global spectrum of plant form and function

Author: Carmona, Carlos P., Bueno, C. Guillermo, Toussaint, Aurele, Trger, Sabrina, Daz, Sandra, Moora, Mari, Munson, Alison D., Prtel, Meelis, Zobel, Martin, Tamme, Riin

Issue&Volume: 2021-09-29

Abstract: Plant traits determine how individual plants cope with heterogeneous environments. Despite large variability in individual traits, trait coordination and trade-offs1,2 result in some trait combinations being much more widespread than others, as revealed in the global spectrum of plant form and function (GSPFF3) and the root economics space (RES4) for aboveground and fine-root traits, respectively. Here we combine the traits that define both functional spaces. Our analysis confirms the major trends of the GSPFF and shows that the RES captures additional information. The four dimensions needed to explain the non-redundant information in the dataset can be summarized in an aboveground and a fine-root plane, corresponding to the GSPFF and the RES, respectively. Both planes display high levels of species aggregation, but the differentiation among growth forms, families and biomes is lower on the fine-root plane, which does not include any size-related trait, than on the aboveground plane. As a result, many species with similar fine-root syndromes display contrasting aboveground traits. This highlights the importance of including belowground organs to the GSPFF when exploring the interplay between different natural selection pressures and whole-plant trait integration. The authors analyse the coordination and trade-off of the aboveground and fine-root traits of vascular plants using global trait databases.

DOI: 10.1038/s41586-021-03871-y

Source: https://www.nature.com/articles/s41586-021-03871-y

Nature:《自然》,创刊于1869年。隶属于施普林格·自然出版集团,最新IF:69.504
官方网址:http://www.nature.com/
投稿链接:http://www.nature.com/authors/submit_manuscript.html


本期文章:《自然》:Online/在线发表

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