Meister, Jörg and Hubaishan, Mohamed A. and Kilian, Norbert and Oberprieler, Christoph (2005) Chloroplast DNA variation in the shrub Justicia areysiana Deflers (Acanthaceae) endemic to the monsoon affected coastal mountains of the Southern Arabian Peninsula. Biological Journal of The Linnean Society 148 (4), pp. 437-444.
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The monsoon affected mountains of the southern Arabian Peninsula harbour in climatically favoured refugia vegetation elements of palaeo-African origin. To understand better the temporal and spatial differentiation of these refugia, chloroplast variation in Justicia areysiana Deflers (Acanthaceae), a shrub species endemic to the Yemeni and Omani mountains close to the Arabian Sea, was studied using PCR-RFLP and chloroplast microsatellite diversity. Eleven haplotypes were characterized and show a distinct geographical distribution pattern with a deep split between populations from south Yemeni fog oases and those from Hawf Mountains/Dhofar region in east Yemen and south Oman. Very limited haplotype diversity within populations (hS = 0.15) and a high level of population differentiation (GST = 0.81) demonstrate the strong genetic isolation of populations from each other. Past oscillations between humid and arid periods connected with glacial and interglacial episodes in the Pleistocene and Holocene are considered responsible for the observed patterns of genetic variation.
|Institutions:||Biology, Preclinical Medicine > Institut für Botanik / Zellbiologie > Group Plant Systematics and Evolution (Prof. Dr. Christoph Oberprieler)|
|Keywords:||climate oscillations; fragmentation; microsatellites; palaeoclimate; PCR-RFLP; phylogeography|
|Subjects:||500 Science > 570 Life sciences|
|Created at the University of Regensburg:||Unknown|
|Owner:||Prof. Dr. Christoph Oberprieler|
|Deposited On:||04 Feb 2011 11:35|
|Last Modified:||04 Feb 2011 14:42|
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