Tracking temporal shifts in area, biomes, and pollinators in the radiation of Salvia (sages) across continents: leveraging anchored hybrid enrichment and targeted sequence data
Tracking temporal shifts in area, biomes, and pollinators in the radiation of Salvia (sages) across continents: leveraging anchored hybrid enrichment and targeted sequence data
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DOI：
10.1002/ajb2.1268
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发表时间：
2019-04-01
影响因子：
3
通讯作者：
Sytsma, Kenneth J.
中科院分区：
文献类型：
--
作者：
Kriebel, Ricardo;Drew, Bryan T.;Sytsma, Kenneth J.
进化生物学的一个关键问题是为什么一些分支在地理上分布广泛，生物群落多样性或物种丰富方面更成功。为了扩大了解如何在区域，生物群系和传粉影响植物多样化的变化，我们研究了这些变化的关系，以多样化的巨型属Salvia.MethodsA年表的开发从一个超级矩阵锚定杂交富集基因组数据和有针对性的序列数据超过500近1000鼠尾草物种。使用BioGeoBEARS重建祖先区域和生物群落。传粉者公会进行了评分，祖先传粉者确定，传粉者公会的变化确定，和传粉者开关compared.Key ResultsA分辨率良好的系统发育主干鼠尾草和更新的亚属名称。鼠尾草在渐新世起源于亚洲西南部，随后散布到世界各地。生物群落经常从可能的祖先谱系转移，利用阔叶林和/或针叶林和/或干旱灌木林。四个物种多样化的变化都与生物群落的变化无关。授粉系统的变化是不相关的物种多样化的变化，除了一个蜂鸟的变化之前，在新大陆亚属的冠附近的多样化的重大转变。Caloconavace。多个逆转回蜜蜂授粉发生在这蜂鸟clade.ConclusionsSalvia多样化广泛在不同的大陆，生物群落，蜜蜂和鸟类授粉。缺乏紧密的相关性的面积，生物群系，和大多数传粉者的转变，四个记录的物种多样化的转变点，在鼠尾草物种形成的其他重要驱动因素。
Premise of the StudyA key question in evolutionary biology is why some clades are more successful by being widespread geographically, biome diverse, or species-rich. To extend understanding of how shifts in area, biomes, and pollinators impact diversification in plants, we examined the relationships of these shifts to diversification across the mega-genus Salvia.MethodsA chronogram was developed from a supermatrix of anchored hybrid enrichment genomic data and targeted sequence data for over 500 of the nearly 1000 Salvia species. Ancestral areas and biomes were reconstructed using BioGeoBEARS. Pollinator guilds were scored, ancestral pollinators determined, shifts in pollinator guilds identified, and rates of pollinator switches compared.Key ResultsA well-resolved phylogenetic backbone of Salvia and updated subgeneric designations are presented. Salvia originated in Southwest Asia in the Oligocene and subsequently dispersed worldwide. Biome shifts are frequent from a likely ancestral lineage utilizing broadleaf and/or coniferous forests and/or arid shrublands. None of the four species diversification shifts are correlated to shifts in biomes. Shifts in pollination system are not correlated to species diversification shifts, except for one hummingbird shift that precedes a major shift in diversification near the crown of New World subgen. Calosphace. Multiple reversals back to bee pollination occurred within this hummingbird clade.ConclusionsSalvia diversified extensively in different continents, biomes, and with both bee and bird pollinators. The lack of tight correlation of area, biome, and most pollinator shifts to the four documented species diversification shifts points to other important drivers of speciation in Salvia.