کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7768668 | 1500411 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Low genetic diversity and weak population differentiation in Firmiana danxiaensis, a tree species endemic to Danxia landform in northern Guangdong, China
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Low genetic diversity and weak population differentiation in Firmiana danxiaensis, a tree species endemic to Danxia landform in northern Guangdong, China Low genetic diversity and weak population differentiation in Firmiana danxiaensis, a tree species endemic to Danxia landform in northern Guangdong, China](/preview/png/7768668.png)
چکیده انگلیسی
Danxia landform, a unique type of petrographic geomorphology, sporadically occurs in southern China. There are about 400 rare or threatened plants and animals in this landform, but little information on genetic aspects of these species has been available. Of them, Firmiana danxiaensis is a dominant tree species endemic to Mount Danxia, a typical Danxia landform in northern Guangdong, China. In this study, we examined genetic diversity and population structure of F. danxiaensis, in comparison with two other narrowly distributed Firmiana species, Firmiana hainanensis and Firmiana kwangsiensis, which grow in non-Danxia-landform regions. Nine microsatellite markers were used to investigate genetic diversity and differentiation in a total of 256 individuals from nine populations of F. danxiaensis, three of F. hainanensis, and one of F. kwangsiensis. The results showed that F. danxiaensis had the lowest genetic diversity (HE = 0.364 ± 0.019) among the three species, but weak population structure similar to another Firmiana species (FST = 0.042 and 0.020, respectively). This low genetic diversity observed in F. danxiaensis is possibly due to confined natural distribution range and strong selective pressure in soils of Danxia landform, which may also be true for other endemic species in Danxia landform. For the long term survival of these endemic species, habitat conservation and anthropogenic introduction to similar habitats such as the adjacent Danxia landform areas should be two major strategies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochemical Systematics and Ecology - Volume 55, August 2014, Pages 66-72
Journal: Biochemical Systematics and Ecology - Volume 55, August 2014, Pages 66-72
نویسندگان
Sufang Chen, Mingwan Li, Rongfeng Hou, Wenbo Liao, Renchao Zhou, Qiang Fan,