干旱区生态环境知识资源中心(Arid): Spatial phylogenetics of grasses in the Southern Cone provides insights into ecology and evolution of the family in South America

Arid

DOI	10.1111/jse.13067
	Spatial phylogenetics of grasses in the Southern Cone provides insights into ecology and evolution of the family in South America
	Aagesen, Lone; Salariato, Diego L.; Scataglini, Maria A.; Acosta, Juan M.; Denham, Silvia S.; Delfini, Carolina
通讯作者	Aagesen, L
来源期刊	JOURNAL OF SYSTEMATICS AND EVOLUTION
ISSN	1674-4918
EISSN	1759-6831
出版年	2024
英文摘要	In this study, we explored the distributions of grass genera in the Southern Cone (SC) of South America, applying several phylogenetic diversity (PD) metrics and randomization tests. Grasses appear to have been present in South America since their early evolution as tropical understory species more than 60 Ma. During the course of evolution, grasses have adapted to all terrestrial biomes and become one of the most successful plant families on earth. At present, the SC contains nearly all terrestrial biomes and a wide range of humid to arid ecoregions. Analyzing 126.514 point occurrences and four plastid markers for 148 genera (91% of the native grass genera), we found that tropical humid regions hold the highest PD, with no observed bias in branch lengths. These results indicate that niche conservatism dominates the diversity pattern of grasses in the SC. We found significantly low PD in the Dry Chaco and in the Patagonian Steppe, which suggest ecological filtering in both warm and cold arid regions. The Patagonian Steppe also holds significantly longer branches than expected by chance, as the native grass flora is mainly composed of distantly related Pooideae genera with a northern hemisphere origin. Short branches are found in the Uruguayan Savanna, suggesting that these grasslands could be a cradle for grass diversity within the SC. The dated phylogeny supported the current view of a relatively recent evolution of the family within the SC, with most diversification taking place from the middle Miocene and onwards. We explored the distributions of grass genera in the Southern Cone (SC) of South America, applying phylogenetic diversity (PD) metrics and randomization tests. Tropical humid regions hold the highest PD, with no observed bias in branch lengths, indicating that niche conservatism dominates the diversity pattern of grasses in the SC. Significantly low PD in the Arid Chaco and in the Patagonian Steppe suggest ecological filtering in both warm and cold arid regions. The Patagonian Steppe also holds significantly longer branches than expected by chance, as the native grass flora is mainly composed of distantly related Pooideae genera. Short branches are found in the Uruguayan Savanna, suggesting that these grasslands could be a cradle for grass diversity within the SC. image
英文关键词	biodiversity biogeography phylogenetic diversity Poaceae South America Southern Cone
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001185996200001
WOS关键词	MOLECULAR PHYLOGENY ; C-4 PHOTOSYNTHESIS ; ENDEMISM ; HISTORY ; POACEAE ; DIVERSITY ; PERSPECTIVE ; VEGETATION ; PATTERNS ; ORIGINS
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404715
推荐引用方式 GB/T 7714	Aagesen, Lone,Salariato, Diego L.,Scataglini, Maria A.,et al. Spatial phylogenetics of grasses in the Southern Cone provides insights into ecology and evolution of the family in South America[J],2024.
APA	Aagesen, Lone,Salariato, Diego L.,Scataglini, Maria A.,Acosta, Juan M.,Denham, Silvia S.,&Delfini, Carolina.(2024).Spatial phylogenetics of grasses in the Southern Cone provides insights into ecology and evolution of the family in South America.JOURNAL OF SYSTEMATICS AND EVOLUTION.
MLA	Aagesen, Lone,et al."Spatial phylogenetics of grasses in the Southern Cone provides insights into ecology and evolution of the family in South America".JOURNAL OF SYSTEMATICS AND EVOLUTION (2024).