Key Laboratory of Green Prevention and Control of Agricultural Transboundary Pests of Yunnan Province/Agricultural Environment and Resource Research Institute, Yunnan Academy of Agricultural Sciences, Kunming 650205, China.
State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China.
Genes (Basel). 2023 Nov 30;14(12):2164. doi: 10.3390/genes14122164.
In order to clarify the migration route and the source of white-backed planthopper (WBPH) () between Myanmar and Yunnan Province, China, we collected six populations throughout Myanmar and five populations around the border areas in Yunnan Province, China. A total of 790 base pairs in the mtDNA COI genes from 416 individuals were obtained. A total of 43 haplotypes were identified, among which 37 were unique haplotypes, and the remaining 6 were shared among different populations. Two common shared haplotypes (H_1 and H_2) had a widespread distribution in all populations and accounted for 88.8% of the total haplotype frequency, suggesting a high-level gene flow among the Myanmar and Yunnan populations. Bayesian skyline plot (BSP) analysis results indicated that the effective population size of WBPH expanded between about 10,000 and 7000 years ago, and might follow the post-LGM (Last Glacial Maximum) expansion pattern. Based on the total migrant () value, it can be deduced that north and northeast Myanmar were the primary migration sources for WBPH populations in the southwest and south Yunnan regions. This study aims to contribute to the sustainable regional management of this important rice pest and provide new insights into the genetic diversity of WBPH in Southeast Asia.
为了阐明白背飞虱（WBPH）（）在缅甸和中国云南省之间的迁移路线和来源，我们收集了缅甸各地的六个种群和中国云南省边境地区的五个种群。共从 416 个人中获得了 mtDNA COI 基因的 790 个碱基对。共鉴定出 43 种单倍型，其中 37 种为独特单倍型，其余 6 种存在于不同种群之间。两种常见的共享单倍型（H_1 和 H_2）在所有种群中广泛分布，占总单倍型频率的 88.8%，表明缅甸和云南种群之间存在高水平的基因流动。贝叶斯天空线图（BSP）分析结果表明，WBPH 的有效种群大小在大约 10000 到 7000 年前之间扩张，可能遵循后 LGM（末次冰盛期）扩张模式。基于总迁移数（），可以推断北缅甸和东北缅甸是滇西南和滇南地区 WBPH 种群的主要迁移来源。本研究旨在为该重要水稻害虫的可持续区域管理做出贡献，并为东南亚地区 WBPH 的遗传多样性提供新的见解。
