干旱区生态环境知识资源中心(Arid): Little genetic distinction between varieties of Pinto Beardtongue (Penstemon bicolor, Plantaginaceae), a rare plant native to the Mojave Desert

Arid

DOI	10.3159/TORREY-D-19-00036.1
	Little genetic distinction between varieties of Pinto Beardtongue (Penstemon bicolor, Plantaginaceae), a rare plant native to the Mojave Desert
	Stone, Benjamin W.; Hauck, Jonathan T.; Wolfe, Andrea D.
通讯作者	Stone, BW
来源期刊	JOURNAL OF THE TORREY BOTANICAL SOCIETY
ISSN	1095-5674
EISSN	1940-0616
出版年	2020
卷号	147 期号:2 页码:190-198
英文摘要	Penstemon bicolor is a relatively rare, short-lived perennial herb of conservation concern and is found in the Mojave Desert and surrounding areas of southern Nevada, southeastern California, and northwestern Arizona. Two varieties of P. bicolor are named according to the color of their corolla: variety bicolor, the yellow or pink-colored form, and variety roseus, the magenta-colored form. The rarity of P. bicolor var. bicolor, coupled with its limited distribution, raises concerns about the genetic diversity present in the species, which is critical for the survival of species in the face of environmental stressors, such as habitat loss. Conservation management strategies for P. bicolor rely partially on the taxonomic status of variety bicolor and variety roseus; if these varieties are in fact distinct genetic lineages more appropriately defined as different species, then the implementation and urgency of management strategies would require updating accordingly. We analyzed amplified fragment length polymorphisms and intersimple sequence repeats for 13 populations of P. bicolor from southern Nevada and northwestern Arizona to assess genetic diversity within the species and to identify the genetic distinctiveness, if any, between varieties. Our findings reveal surprisingly high levels of genetic diversity, in contrast to expectations for rare, perennial, outcrossing plants. Penstemon bicolor does, however, face ongoing threats of habitat destruction and potential local extirpation due to urbanization of the greater Las Vegas area, and we recommend that the current protective status of the species be maintained. Additionally, our analyses of differentiation failed to reveal genetic distinctiveness between varieties; we thus do not recommend that varieties of P. bicolor be elevated to species level.
英文关键词	AFLP angiosperm ISSR population genetics species
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000562125400007
WOS关键词	POPULATION-STRUCTURE ; DIVERSITY ; MARKERS ; DIFFERENTIATION ; INFERENCE ; PROGRAM
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/2XILL650/325786
作者单位	[Stone, Benjamin W.; Hauck, Jonathan T.; Wolfe, Andrea D.] Ohio State Univ, Dept Evolut Ecol & Organismal Biol, 318 West 12th Ave, Columbus, OH 43210 USA
推荐引用方式 GB/T 7714	Stone, Benjamin W.,Hauck, Jonathan T.,Wolfe, Andrea D.. Little genetic distinction between varieties of Pinto Beardtongue (Penstemon bicolor, Plantaginaceae), a rare plant native to the Mojave Desert[J],2020,147(2):190-198.
APA	Stone, Benjamin W.,Hauck, Jonathan T.,&Wolfe, Andrea D..(2020).Little genetic distinction between varieties of Pinto Beardtongue (Penstemon bicolor, Plantaginaceae), a rare plant native to the Mojave Desert.JOURNAL OF THE TORREY BOTANICAL SOCIETY,147(2),190-198.
MLA	Stone, Benjamin W.,et al."Little genetic distinction between varieties of Pinto Beardtongue (Penstemon bicolor, Plantaginaceae), a rare plant native to the Mojave Desert".JOURNAL OF THE TORREY BOTANICAL SOCIETY 147.2(2020):190-198.