First fossil record of an East Asian endemic genus Sladenia (Sladeniaceae) from its modern range: Implications for floristic evolution and conservation biology

doi:10.1111/jse.12518

KIB OpenIR

	First fossil record of an East Asian endemic genus Sladenia (Sladeniaceae) from its modern range: Implications for floristic evolution and conservation biology
	Jia,Lin-Bo ; Manchester,Steven R.; Huang,Jian ; Su,Tao ; Xue,Li; Zhang,Shi-Tao ; Huang,Yong-Jiang ; Zhou,Zhe-Kun
	2021
发表期刊	JOURNAL OF SYSTEMATICS AND EVOLUTION
ISSN	1674-4918
卷号	59 期号:1 页码:216-226
摘要	Fossil records of endemic plants play an important role in recognizing the floristic history of East Asia and thereby facilitate the conservation of plant diversity in the region. However, the fossil record of many extant East Asian endemic genera remains poorly documented thus far. Here, we report an infructescence fossil of an East Asian endemic genus, Sladenia (Sladeniaceae), from the early Miocene of southeastern Yunnan, China. The fossil is characterized by: (i) dichasial cymes; and (ii) flask-shaped ovary with dense subparallel ribs on the surface extending from the base to the distal end of the united style. It represents the first fossil record of Sladenia in Asia, showing that the genus was established in the region at least by the early Miocene. Given that a much older fossil record of Sladeniaceae has been reported from Africa and the sister group of Sladenia is distributed only in Africa, Sladenia is not likely of East Asian origin. The present endemic status of Sladenia was possibly achieved by regional extirpation in Africa and taking refuge in East Asia. This case thus supports the Museum rather than Cradle hypothesis for the genesis of high plant species in the flora of East Asia. A comparison of the present fossil with extant Sladenia infructescence shows morphological stasis from the early Miocene to present. Such evolutionary tardiness might have resulted in the reduced fitness of the genus, which further caused its current endangered situation.
关键词	conservation endemic plant morphological stasis phytogeography Sladenia SOUTHWEST CHINA MIDDLE MIOCENE CEDRELOSPERMUM ULMACEAE MOLECULAR-DATA WOOD ANATOMY HISTORY YUNNAN PHYLOGEOGRAPHY CELASTRIFOLIA PHYLOGENY
DOI	10.1111/jse.12518
WOS记录号	WOS:000479583300001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/73614
专题	中国科学院昆明植物研究所
作者单位	1.Chinese Acad Sci, Kunming Inst Bot, CAS Key Lab Plant Divers & Biogeog East Asia, Kunming 650204, Yunnan, Peoples R China 2.Manchester, Steven R.] Univ Florida, Florida Museum Nat Hist, Gainesville, FL 32611 USA 3.Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Kunming Univ Sci & Technol, Fac Land Resource Engn, Kunming 650093, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Jia,Lin-Bo,Manchester,Steven R.,Huang,Jian,et al. First fossil record of an East Asian endemic genus Sladenia (Sladeniaceae) from its modern range: Implications for floristic evolution and conservation biology[J]. JOURNAL OF SYSTEMATICS AND EVOLUTION,2021,59(1):216-226.
APA	Jia,Lin-Bo.,Manchester,Steven R..,Huang,Jian.,Su,Tao.,Xue,Li.,...&Zhou,Zhe-Kun.(2021).First fossil record of an East Asian endemic genus Sladenia (Sladeniaceae) from its modern range: Implications for floristic evolution and conservation biology.JOURNAL OF SYSTEMATICS AND EVOLUTION,59(1),216-226.
MLA	Jia,Lin-Bo,et al."First fossil record of an East Asian endemic genus Sladenia (Sladeniaceae) from its modern range: Implications for floristic evolution and conservation biology".JOURNAL OF SYSTEMATICS AND EVOLUTION 59.1(2021):216-226.