Hagelstam-Renshaw Charlotte, Ringelberg Jens J, Sinou Carole, Cardinal-McTeague Warren, Bruneau Anne
Institut de Recherche en Biologie Végétale and Département de Sciences Biologiques, Université de Montréal, Montréal, QC H1X 2B2 Canada.
School of Geosciences, Old College, University of Edinburgh, South Bridge, Edinburgh, EH8 9YL UK.
Rev Bras Bot. 2025;48(1):11. doi: 10.1007/s40415-024-01058-z. Epub 2024 Dec 18.
Some plant lineages remain within the same biome over time (biome conservatism), whereas others seem to adapt more easily to new biomes. The c. 398 species (14 genera) of subfamily Cercidoideae (Leguminosae or Fabaceae) are found in many biomes around the world, particularly in the tropical regions of South America, Asia and Africa, and display a variety of growth forms (small trees, shrubs, lianas and herbaceous perennials). Species distribution maps derived from cleaned occurrence records were compiled and compared with existing biome maps and with the literature to assign species to biomes. Rainforest (144 species), succulent (44 species), savanna (36 species), and temperate (10 species) biomes were found to be important in describing the global distribution of Cercidoideae, with many species occurring in more than one biome. Two phylogenetically isolated species-poor temperate () and succulent () biome lineages are sister to two broadly distributed species-rich tropical clades. Ancestral state reconstructions on a time-calibrated phylogeny suggest biome shifts occurred throughout the evolutionary history of the subfamily, with shifts between the succulent and rainforest biomes, from the rainforest to savanna, from the succulent to savanna biome, and one early occurring shift into (or from) the temperate biome. Of the 26 inferred shifts in biome, three are closely associated with a shift from the ancestral tree/shrub growth form to a liana or herbaceous perennial habit. Only three of the 13 inferred transcontinental dispersal events are associated with biome shifts. Overall, we find that biome shifts tend to occur within the same continent and that dispersals to new continents tend to occur within the same biome, but that nonetheless the biome-conserved and biogeographically structured Cercidoideae have been able to adapt to different environments through time.
The online version contains supplementary material available at 10.1007/s40415-024-01058-z.
随着时间推移，一些植物谱系一直处于相同的生物群落中（生物群落保守性），而另一些似乎更容易适应新的生物群落。豆科云实亚科约398种（14属）植物分布于世界各地的许多生物群落中，尤其在南美洲、亚洲和非洲的热带地区，呈现出多种生长形式（小乔木、灌木、藤本植物和多年生草本植物）。根据清理后的出现记录编制了物种分布图，并与现有的生物群落图和文献进行比较，以将物种归入生物群落。结果发现，雨林（144种）、肉质植物（44种）、稀树草原（36种）和温带（10种）生物群落在描述云实亚科的全球分布方面很重要，许多物种出现在不止一个生物群落中。两个系统发育上孤立、物种贫乏的温带（）和肉质植物（）生物群落谱系是两个广泛分布、物种丰富的热带分支的姐妹群。在经过时间校准的系统发育树上进行的祖先状态重建表明，在该亚科的整个进化历史中发生了生物群落转移，包括肉质植物和雨林生物群落之间的转移、从雨林到稀树草原的转移、从肉质植物到稀树草原生物群落的转移，以及一次早期发生的进入（或离开）温带生物群落的转移。在推断出的26次生物群落转移中，有三次与从祖先的乔木/灌木生长形式向藤本植物或多年生草本习性的转变密切相关。在推断出的13次跨大陆扩散事件中，只有三次与生物群落转移有关。总体而言，我们发现生物群落转移往往发生在同一大陆内，向新大陆的扩散往往发生在相同的生物群落内，但尽管如此，具有生物群落保守性和生物地理结构的云实亚科植物随着时间的推移仍能够适应不同的环境。
在线版本包含可在10.1007/s40415-024-01058-z获取的补充材料。
