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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
Sponsored by:Sichuan Society of Zoologists; Chengdu Giant Panda Breeding Research Foundation; Sichuan Association of Wildlife Conservation; Sichuan University
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Your Position :Home->Past Journals Catalog->2013 Vol.32 No.4

Comparison of Microsatellites between the Genomes of Tetranychus urticae and Ixodes scapularis
Author of the article:WANG Zili#, HUANG Jie#, DU Lianming, LI Wujiao, YUE Bisong, ZHANG Xiuyue*
Author's Workplace:(Sichuan Key Laboratory of Conservation Biology on Endangered Wildlife, College of Life Science, Sichuan University, Chengdu 610064, China)
Key Words: Tetranychus urticae; Ixodes scapularis; genome; microsatellite; characterization
Abstract:

The sequences of microsatellites in Tetranychus urticae and Ixodes scapularis genomes were compared in this study. A total of 7934 microsatellites were observed in T. urticae genome. The frequency was 1/11.45 kb and covering about 0.16% of the genome. Trinucleotide repeat motifs (72.83%) appeared to be the most abundant type in T. urticae genome. However, 550 629 microsatellites were observed in I. scapularis genome. The frequency was 1/3.21 kb and covering about 0.57% of the genome. The mononucleotide microsatellite was the most abundant type in I. scapularis genome and accounted for 73.74% of the total. The microsatellites in I. scapularis genome had more repeats than in T. urticae. What’s more, the microsatellites in T. urticae genome had a higher GC content (34.10%) than in I. scapularis (24.35%). The genome of T. urticae contained a higher proportion of unique microsatellite sequences than I. scapularis. Repeats of A, T, AG, TC, TG, GAT, ATTT and AATA were the common core sequences in the two genomes.

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