Behavior and biology of the tomato psyllid, Bactericerca cockerelli, in response to the Mi-1.2 gene
Behavior and biology of the tomato psyllid, Bactericerca cockerelli, in response to the Mi-1.2 gene
复制标题
DOI：
10.1111/j.1570-8703.2006.00458.x
复制
发表时间：
2006-10-01
影响因子：
1.9
通讯作者：
Paine, Timothy D.
中科院分区：
文献类型：
--
作者：
Casteel, Clare L.;Walling, Linda L.;Paine, Timothy D.
Mi-1.2基因是从番茄的野生品种——茄科番茄（Solanum peruvianum） （Mill）中鉴定出来的，已被纳入接近等基因的商业番茄品种中，并已被证明能够抵抗三种不同的韧皮部食用者：蚜虫、白蝇和线虫。结果表明，在北美西部地区，携带Mi-1.2的植株对番茄木虱（Solanum lycopersicon, Mill）的一种严重害虫——木虱Bactericerca [Paratrioza] cockerelli (Sulc)（同翅目：木虱科）也具有抗性。在选择研究中，番茄木虱倾向于选择不含Moneymaker （mi-1.2）基因的植物，而不含Motelle （mi-1.2）基因的植物。结果，易感品种的总产卵量更高，尽管无选择研究表明，两种品种的个体雌性产卵数量没有差异。与含有该基因的植物相比，缺乏该基因的植物从卵到成虫的存活率更高。然而，两个品种饲养的个体的总发育时间没有差异。结果表明，在携带Mi-1.2基因的植株中观察到的对番茄木虱的抗性机制不同于其他研究中对三种韧皮部取食者的抗性机制。
The Mi-1.2 gene, identified from wild varieties of tomato, Solanum peruvianum (Mill) (Solanaceae), has been incorporated into near-isogenic commercial varieties of tomato and has been shown to confer resistance to three different species of phloem feeders: aphids, whiteflies, and nematodes. The results presented here show that plants bearing Mi-1.2 were also resistant to the tomato psyllid, Bactericerca [Paratrioza] cockerelli (Sulc) (Homoptera: Psyllidae), a serious pest of tomato, Solanum lycopersicon (Mill), in the western half of North America. In choice studies, tomato psyllids preferred to settle on plants that did not contain the gene [Moneymaker (mi-1.2)] compared to near-isogenic plants with the gene [Motelle (Mi-1.2)]. As a result, total oviposition was higher on the susceptible variety, although no-choice studies indicated that there were no differences in numbers of eggs laid by individual females on either variety. Survival from egg to adult was higher on plants lacking the gene compared to plants containing the gene. However, there were no differences in total development time of individuals reared from either variety. The results suggest that mechanisms of resistance to the tomato psyllid observed in plants bearing the Mi-1.2 gene are distinct from the mechanisms of resistance to the three phloem feeders examined in other studies.