Variation in the Coat Protein Gene of Papaya ringspot Virus Isolates from Multiple Locations of China
Variation in the Coat Protein Gene of Papaya ringspot Virus Isolates from Multiple Locations of China作者机构：State Key Laboratory for Tropical Crops Biotechnology Institute of Tropical Biology Science China Academy of Tropical Agricultural Science Haikou 571101 China Department of Horticulture South China University of Tropical Agriculture Danzhou 571737 China
出 版 物：《Journal of Integrative Plant Biology》 (植物学报（英文版）)
年 卷 期：2007年第49卷第7期
页 面：1062-1069页
核心收录：
学科分类：09[农学] 0902[农学-园艺学] 090201[农学-果树学]
主 题：coat protein gene Papaya ringspot virus isolates sequence analysis variation.
摘 要：The potyvirus Papaya ringspot virus （PRSV） is an important pathogen of papaya that causes severe losses in economic crops for papaya production globally. The coat protein （CP） genes of five PRSV isolates originating from different locations in China were cloned and sequenced. The CP-coding region varied in size from 864-873 nucleotides, encoding proteins of 288-291 amino acids. The five Chinese isolates of PRSV have been characterized as papaya-infecting （PRSV-P）. The CP sequences of the Chinese isolates were compared with those of previously published PRSV isolates originating from different countries at amino acid levels. A number of KE repeat boxes in the N terminus of the PRSV-CP were found in all Chinese isolates. The phylogenetic branching pattern revealed that there was certain extended grouping between geographic locations, and the Asian type probably represents the oldest population of PRSV. The information of CP genes will be useful in designing and developing durable virus resistant-PRSV transgenic papaya in China. Meanwhile broad-spectrum-virus resistant, strongly resistant-PRSV and good safe papaya lines are required.
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