中文摘要：自2000年以来，由灰飞虱传播的水稻条纹病毒在韩国的热点区域已经从东南部转变为西部沿海地区。这种变化的原因尚不清楚，但在春季昆虫介体从越冬地点向稻田迁移这个时间短的温度变化被认为可能是一个重要因素。本研究调查了感染RSV和未感染RSV的SBPH种群的发育差异，并进一步研究了春季温度如何影响RSV向水稻传播。研究发现，20度时RSV向水稻秧苗的传播速率高于15度时。高温下RSV传播速率高且感染RSV的SBPH若虫发育快，这被认为与RSV在韩国的热点区域从韩国东南部转移至西部沿海地区有关。
外文摘要：Since the 2000's in Korea, the regional hotspots of rice stripe virus (genus Tenuivirus, RSV), transmitted by small brown planthopper (Laodelphax striatellus (Fallen), SBPH), have changed from the southeastern to the western coastal regions. The reasons for this are as yet unknown, but recent changes in temperatures in spring, the time at which the vectors migrate from overwintering sites to rice fields, are thought to be an important factor. In this study, we investigated the differences in the development of RSV-infected and RSV-free SBPH populations and further investigated how spring temperatures affect RSV transmission to rice (Otyza sativa). Two temperature conditions (15 and 20 degrees C) were chosen based on the average temperature in April-May and May-June in Korea, respectively, at which the SBPHs begin to migrate from Gramineae weeds to rice during the spring season. The nymphal developmental period in the RSV-infected SBPH was significantly shorter than that in the RSV-free SBPH. The body weight of males was significantly higher in the RSV -infected SBPH than in the RSV-free SBPH at early nymphal stage (1st day of 5th instar). The transmission of RSV to the rice seedlings was higher at 20 degrees C than at 15 degrees C. Rapid nymphal development of the RSV-infected SBPH with higher RSV transmission rate at high temperature is considered to be related to the geographical shift of RSV hotspots from the southeastern to the western coastal regions of Korea.
外文关键词：Maize rough dwarf virus (MRDV); Rice black-streaked dwarf virus (RBSDV); Fijivirus; Cereal black-streaked dwarf fijivirus (CBSDV)
作者：Lee, Minho; Lee, Sunyoung; Park, Jin Woo; 等
作者单位：高丽大学
期刊名称：JOURNAL OF ASIA-PACIFIC ENTOMOLOGY
期刊影响因子：1.046
出版年份：2017
出版刊次：12
点击下载：温度和病毒调节的昆虫介体的发育改变韩国水稻条纹病毒的流行研究