Chiza Chikoti Patrick, Tembo Mathias, Peter Legg James, Rufini Shirima Rudolph, Mugerwa Habibu, Sseruwagi Peter
Zambia Agriculture Research Institute, Mt. Makulu Research Station, Private Bag 7, Chilanga 10101, Zambia.
International Institute of Tropical Agriculture, P.O. Box 34441 Dar es Salaam, Tanzania.
Insects. 2020 Nov 5;11(11):761. doi: 10.3390/insects11110761.
is an important vector of cassava brown streak viruses and cassava mosaic begomoviruses, the causal agents of cassava brown streak disease and cassava mosaic disease (CMD), respectively. A study was carried out to determine the genetic variability of associated with cassava and the occurrence of CMD in Zambia in 2013 and 2015. Phylogenetic analysis showed the presence of only the sub-Saharan Africa 1 (SSA1) genetic group in Zambia. The SSA1 population had three population subgroups (SGs): SSA1-SG1, SSA1-SG2 and SSA1-SG3. All three SSA1 population subgroups occurred in Western Province. However, only SSA1-SG3 occurred in Eastern Province, while only SSA1-SG1 occurred in North Western and Luapula Provinces. Adult were most abundant in Western Province in 2013 (11.1/plant) and 2015 (10.8/plant), and least abundant (0.2/plant) in Northern Province in both 2013 and 2015. CMD was prevalent in all seven provinces surveyed, with the highest incidence recorded in Lusaka Province in both 2013 (78%) and 2015 (83.6%), and the lowest in Northern Province in both 2013 (26.6%) and 2015 (29.3%). Although SSA1-SG1 occurred at greater abundances than the other subgroups, there was no direct association demonstrated between whitefly subgroup and incidence of CMD. Establishing which genetic groups and populations are associated with CMD and their distribution in the country is a key factor in guiding the development of CMD control strategies for cassava-dependent households.
是木薯褐色条纹病毒和木薯花叶贝古病毒的重要传播媒介，分别是木薯褐色条纹病和木薯花叶病（CMD）的病原体。2013年和2015年在赞比亚开展了一项研究，以确定与木薯相关的[具体对象未明确，原文缺失关键信息]的遗传变异性以及CMD的发生情况。系统发育分析表明，赞比亚仅存在撒哈拉以南非洲1（SSA1）遗传组。SSA1群体有三个种群亚组（SGs）：SSA1-SG1、SSA1-SG2和SSA1-SG3。所有这三个SSA1种群亚组都出现在西部省。然而，只有SSA1-SG3出现在东部省，而只有SSA1-SG1出现在西北省和卢阿普拉省。[具体对象未明确，原文缺失关键信息]成虫在2013年（11.1只/株）和2015年（10.8只/株）在西部省最为丰富，而在2013年和2015年在北部省最少（0.2只/株）。CMD在所有七个被调查省份都很普遍，2013年（78%）和2015年（83.6%）在卢萨卡省记录到的发病率最高，而在2013年（26.6%）和2015年（29.3%）在北部省最低。尽管SSA1-SG1出现的数量比其他亚组更多，但粉虱亚组与CMD发病率之间没有直接关联。确定哪些[具体对象未明确，原文缺失关键信息]遗传组和种群与CMD相关及其在该国的分布是指导为依赖木薯的家庭制定CMD控制策略的关键因素。
