Share Email Print
cover

Proceedings Paper

Microenvironment stresses and adaptive genetic differentiation in Reaumuria soongorica population
Author(s): Li Xu; Ming Yue; Fengxue Gu; Xiaoling Pan; Guifang Zhao
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Genetic diversity was studied by RAPD analysis in 7 subpopulations and 136 individuals of Reaumuria soongorica in the oasis-desert transitional zone of Fukang, Xinjiang, China. The experiment involved the different microenvironment stresses (ecological factors) in the oasis-desert zone of Fukang: (1) geographical location, including latitude and longitude; (2) the components of the soil, such as the content organic matter, N, P, K, water, salinity and pH value. Comparisons were based on 71 loci amplified by 15 oligonucleotide primers. These DNA polymorphisms appeared to be associated with the microenvironment stresses. The results indicated that the significant correlation existed among the ecological factors in the different microenvironments. And the allele frequencies of 39 from 71 loci highly related with the corresponding microenvironment factors. The mean proportion of polymorphic loci (P), Shannon information index (I), Nei’s gene diversity (H), observed number of alleles (Na) and effective number of alleles (Ne) of R. soongorica seven subpopulations related each other to some extent. The paper showed that the microenvironment stresses (ecological factors) played the important role in adaptive genetic differentiation of R. soongorica population, which resulted from the natural selection, and not by chance from subpopulation subdivisions.

Paper Details

Date Published: 14 July 2003
PDF: 10 pages
Proc. SPIE 4890, Ecosystems Dynamics, Ecosystem-Society Interactions, and Remote Sensing Applications for Semi-Arid and Arid Land, (14 July 2003); doi: 10.1117/12.466685
Show Author Affiliations
Li Xu, Northwest Univ. (China)
Ming Yue, Northwest Univ. (China)
Fengxue Gu, Xinjiang Univ. (China)
International Ctr. for Desert Affairs (China)
Xiaoling Pan, Xinjiang Univ. (China)
International Ctr. for Desert Affairs (China)
Guifang Zhao, Northwest Univ. (China)


Published in SPIE Proceedings Vol. 4890:
Ecosystems Dynamics, Ecosystem-Society Interactions, and Remote Sensing Applications for Semi-Arid and Arid Land
Xiaoling Pan; Wei Gao; Michael H. Glantz; Yoshiaki Honda, Editor(s)

© SPIE. Terms of Use
Back to Top