Tracking temporal shifts in area, biomes, and pollinators in the radiation of Salvia (sages) across continents: leveraging anchored hybrid enrichment and targeted sequence data

作者：Ricardo Kriebel, Bryan T. Drew, Chloe P. Drummond, Jesús Guadalupe González‐Gallegos, Ferhat Celep, Malik Mohamed Mahdjoub, Jeffrey P. Rose, Chun‐Lei Xiang, Guo‐Xiong Hu, Jay B. Walker, Emily Moriarty Lemmon, Alan R. Lemmon, Kenneth J. Sytsma · 发表于：American Journal of Botany · 年份：2019 · DOI：10.1002/ajb2.1268 · 被引用次数：110 · 研究领域：Plant and animal studies、Plant Diversity and Evolution、Plant and Fungal Species Descriptions

PREMISE OF THE STUDY: A 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. METHODS: A 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 RESULTS: A 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. CONCLUSIONS: Salvia diversified exten...