Genetic Structure of Ammopiptanthus and Its Conservation Implications

doi:10.7522/j.issn.1000-694X.2016.00147

JOURNAL OF DESERT RESEARCH ›› 2018, Vol. 38 ›› Issue (1): 163-171.DOI: 10.7522/j.issn.1000-694X.2016.00147

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Genetic Structure of Ammopiptanthus and Its Conservation Implications

Su Zhihao¹, Shi Wei¹, Zhuo Li², Pan Borong¹, Wang Jiancheng¹

1. Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;
2. Library, Xinjiang Normal University, Urumqi 830011, China

Received:2016-09-20 Revised:2016-11-08 Online:2018-01-20 Published:2018-01-20

Abstract

Abstract: Ammopiptanthus is an only evergreen shrub relics with broad leaves in Neimeng-Xinjiang desert. There has been long dispute about the classification of the genus Ammopiptanthus, and it is at risk of extinction. We investigate the genetic structure across its whole distribution range using modern molecular techniques to provide useful information for its conservation. Both the nuclear and chloroplast datasets showed that Ammopiptanthus comprised two lineages, distributed respectively in Tarim Desert and Alxa Desert. The molecular data give further support to the suggestion that populations in Tarim Desert should be given species rank, A. nunas. The level of genetic diversity in the two species are both low, might caused by origination from genetically depauperate populations, and increased genetic drift and selfing in small fragmented populations. There is no significant genetic structure in A. nunas. However, there is a significant genetic divergence between north and south Alxa Desert in A. mongolicus. Origins from different refugia may be responsible for the genetic divergence between north and south of Alxa Desert. Based on these results, we provide some reasonable advices for the conservation of Ammopiptanthus.

Key words: Ammopiptanthus, genetic diversity, genetic structure, conservation implications

CLC Number:

Q948.2

Su Zhihao, Shi Wei, Zhuo Li, Pan Borong, Wang Jiancheng. Genetic Structure of Ammopiptanthus and Its Conservation Implications[J]. JOURNAL OF DESERT RESEARCH, 2018, 38(1): 163-171.

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Genetic Structure of Ammopiptanthus and Its Conservation Implications

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