Liu Fangzhou, Li Xiang, Zhao Muhua, Guo Mengjian, Han Kehong, Dong Xinxin, Zhao Jing, Cai Wanlun, Zhang Qifa, Hua Hongxia
Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China.
Natl Sci Rev. 2020 Jul;7(7):1181-1189. doi: 10.1093/nsr/nwaa061. Epub 2020 Apr 8.
Rice planthoppers, the most devastating rice pests, occur in two wing forms: the short-wing form for rapid population growth and long-wing form for long-distance migration, which together create the mechanism for outbreak. Here we show that ( is a key regulator for switching between the long- and short-wing forms of rice planthoppers. is expressed in both forewing and hindwing pads, which is different from the canonical model of expression. In brown planthoppers, expression of () is regulated by nutritional status of the rice host. High-quality young plants induce expression leading to the short-wing form; low-quality ripe plants reduce expression resulting in long-wing form. We also showed that is regulated by the insulin receptors NlInR1 and NlInR2. The default expression of inhibits resulting in long-wings, while high-quality hosts induce expression, which represses thus promoting expression to produce short-wings.
稻飞虱是最具毁灭性的水稻害虫，有两种翅型：短翅型用于快速种群增长，长翅型用于长距离迁飞，这共同构成了暴发机制。在此我们表明，（基因）是稻飞虱长翅型和短翅型之间转换的关键调节因子。（该基因）在前翅和后翅芽中均有表达，这与（基因）表达的经典模式不同。在褐飞虱中，（该基因）的表达受水稻寄主营养状况的调控。优质嫩株诱导（该基因）表达导致短翅型；劣质成熟植株降低（该基因）表达导致长翅型。我们还表明，（该基因）受胰岛素受体NlInR1和NlInR2的调控。（该基因）的默认表达抑制（另一基因）导致长翅，而优质寄主诱导（该基因）表达，其抑制（另一基因）从而促进（该基因）表达以产生短翅。
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