cluster analysis

Genetic diversity and relationship analysis of Gossypium arboreum accessions

F. Liu, Zhou, Z. L., Wang, C. Y., Wang, Y. H., Cai, X. Y., Wang, X. X., Zhang, Z. S., and Wang, K. B., “Genetic diversity and relationship analysis of Gossypium arboreum accessions”, vol. 14, pp. 14522-14529, 2015.

Simple sequence repeat techniques were used to identify the genetic diversity of 101 Gossypium arboreum accessions collected from India, Vietnam, and the southwest of China (Guizhou, Guangxi, and Yunnan provinces). Twenty-six pairs of SSR primers produced a total of 103 polymorphic loci with an average of 3.96 polymorphic loci per primer. The average of the effective number of alleles, Nei’s gene diversity, and Shannon’s information index were 0.59, 0.2835, and 0.4361, respectively. The diversity varied among different geographic regions.

Codon usage bias analysis for the spermidine synthase gene from Camellia sinensis (L.) O. Kuntze

E. You, Wang, Y., Ding, Z. T., Zhang, X. F., Pan, L. L., and Zheng, C., “Codon usage bias analysis for the spermidine synthase gene from Camellia sinensis (L.) O. Kuntze”, vol. 14, pp. 7368-7376, 2015.

The spermidine synthase (SPDS) gene exists widely in all types of plants. In this paper, the codon usage of the SPDS gene from Camellia sinensis (CsSPDS) was analyzed. The results showed that the codon usage of the CsSPDS gene is biased towards the T-ended or A-ended codons, which is similar to that observed in 73 genes selected from the C. sinensis genome. An ENC-plot for 15 SPDS genes from various plant species suggested that mutational bias was the major factor in shaping codon usage in these genes.