Genetic differentiation and relationships of populations in the Cycas balansae complex (Cycadaceae) and its conservation implications

Annals of Botany
Long-qian Xiao, Xun Gong

Abstract

The Cycas balansae complex is arguably a controversial group with regard to species delineation. Some taxonomists recognize a single polymorphic species while others distinguish five narrowly defined ones. The unresolved taxonomy has the potential to bring about significant problems for species conservation. Thus, an investigation to examine the genetic diversity and differentiation in the C. balansae complex was performed to determine the relationship of populations and to test whether the morphologically defined segregations represent genetically distinct units. Inter-simple sequence repeat (ISSR) markers were employed to assess the genetic diversity in the C. balansae complex with a sample of 158 individuals from all extant populations in China. ISSR markers revealed low genetic diversity in all populations studied (H(E) and H(O) averaged 0.0639 and 0.0798 at the population level, respectively). Phenetic analysis showed that the C. balansae complex grouped into five clusters closely corresponding to the narrowly defined C. balansae, C. parvula, C. shiwandashanica, C. tanqingii and C. simplicipinna. ISSR data suggest that the C. balansae complex has evolved into five genetically distinct units. These might be derived from a r...Continue Reading

References

Dec 1, 1973·Proceedings of the National Academy of Sciences of the United States of America·M Nei
Aug 1, 1995·Genome Génome / Conseil National De Recherches Canada·S S SalimathJ L Bennetzen
Jan 12, 2001·Biochemical Systematics and Ecology· van der Bank HJ Hurter
Sep 19, 2003·Trends in Plant Science·Eric D BrennerRichard W Twigg
May 18, 2004·Annals of Botany·Long-qian XiaoSi-xiang Zheng
Sep 8, 2004·Accident; Analysis and Prevention·Philip JacobsDonald Schopflocher
Nov 1, 1989·Evolution; International Journal of Organic Evolution·Montgomery Slatkin, Nicholas H Barton

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Citations

Jan 22, 2015·International Journal of Molecular Sciences·Dulce M Galván-HernándezS Mario Vázquez-Torres
Apr 14, 2007·Journal of Plant Research·Takuro KamadaMasayuki Maki

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