cDNA Cloning of Heat Shock Protein Genes and Their Expression in an Indigenous Cryptic Species of the Whitefly Bemisia tabaci Complex from China
文献类型: 外文期刊
作者: Wan Fang-hao;Guo Jian-ying;Yu Hao
作者机构:
关键词: Bemisia tabaci;biological invasion;thermotolerance;indigenous and invasive biotypes;heat shock protein (hsp)
期刊名称: JOURNAL OF INTEGRATIVE AGRICULTURE
ISSN: 2095-3119
年卷期: 2012 年 11 卷 2 期
页码:
收录情况: SCI
摘要: Thermal adaptation plays a fundamental role in shaping the distribution and abundance of insects, and heat shock proteins (Hsps) play important roles in the temperature adaptation of various organisms. To better understand the temperature tolerance of the indigenous ZHJ2-biotype of whitefly Bemisia tabaci species complex, we obtained complete cDNA sequences for hsp90, hsp70, and hsp20 and analyzed their expression profiles under different high temperature treatments by real-time quantitative polymerase chain reaction. The high temperature tolerance of B. tabaci ZHJ2-biotype was determined by survival rate after exposure to different high temperatures for 1 h. The results showed that after 41 degrees C heat-shock treatment for 1 h, the survival rates of ZHJ2 adults declined significantly and the estimated temperature required to cause 50% mortality (LT50) is 42.85 degrees C for 1 h. Temperatures for onset (T-on) or maximal (T-max) induction of hsps expression in B. tabaci ZHJ2-biotype were 35 and 39 degrees C (or 41 degrees C). Compared with previous studies, indigenous ZHJ2-biotype exhibits lower heat temperature stress tolerance and T-on (or T-max) than the invasive B-biotype.
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