State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
College of Life Sciences, Langfang Normal University, Langfang 065000, China.
Plant Dis. 2020 May;104(5):1407-1414. doi: 10.1094/PDIS-11-19-2323-RE. Epub 2020 Mar 9.
Diseases caused by insect-transmitted viruses are the predominant constraint to wheat production worldwide. However, detailed knowledge of virus incidence and dynamics in China in recent years is very limited. Here, major wheat-growing regions of China were surveyed over 10 years for insect-transmitted viruses, and 2,143 samples were collected (in 2007 to 2015) and analyzed by molecular hybridization or multiplex reverse-transcription PCR for barley yellow dwarf viruses (BYDVs: BYDV-GAV, -GPV, and -PAV) and wheat dwarf virus (WDV). In a 4-year survey (2016 to 2019), the incidence of eight insect-transmitted viruses (BYDVs, WDV, wheat yellow striate virus [WYSV], barley yellow striate mosaic virus [BYSMV], northern cereal mosaic virus [NCMV], and rice black-streaked dwarf virus [RBSDV]) was investigated, and BYDVs and WDV were widely distributed across China. BYDV-GAV (29.0% of the tested sample) was the most abundant, followed by BYDV-PAV (23.2%) from 2007 to 2015. From 2016 to 2019, however, BYDV-PAV had become the predominant species (39.5% positive of 952 samples tested), while the incidence of BYDV-GAV (13.4%) had declined. During the entire survey, the incidence of BYDV-GPV was very low in some locations in northwestern and northern China, and all eight viruses caused only local epidemics, not large-scale outbreaks throughout China. Two new cereal-infecting rhabdoviruses, leafhopper-transmitted WYSV and planthopper-transmitted BYSMV, were also found in China in recent years.
由昆虫传播的病毒引起的疾病是全球小麦生产的主要制约因素。然而，近年来中国病毒发病率和动态的详细知识非常有限。在这里，对中国主要小麦种植区进行了 10 年的昆虫传播病毒调查，共采集了 2143 个样本（2007 年至 2015 年），并通过分子杂交或多重逆转录 PCR 分析了大麦黄花叶病毒（BYDV：BYDV-GAV、-GPV 和-PAV）和小麦矮缩病毒（WDV）。在为期 4 年的调查（2016 年至 2019 年）中，调查了 8 种昆虫传播病毒（BYDVs、WDV、小麦黄条纹病毒（WYSV）、大麦黄花叶条纹 mosaic 病毒（BYSMV）、北方谷物 mosaic 病毒（NCMV）和水稻黑条矮缩病毒（RBSDV））的发病率，BYDVs 和 WDV 在中国广泛分布。从 2007 年到 2015 年，BYDV-GAV（检测样本的 29.0%）最为丰富，其次是 BYDV-PAV（23.2%）。然而，从 2016 年到 2019 年，BYDV-PAV 已成为主要物种（952 个测试样本中 39.5%阳性），而 BYDV-GAV 的发病率（13.4%）有所下降。在整个调查过程中，在中国西北部和北部的一些地区，BYDV-GPV 的发病率非常低，所有 8 种病毒仅引起局部流行，而不是在中国各地的大规模爆发。近年来，中国还发现了两种新的侵染谷物的弹状病毒，叶蝉传播的 WYSV 和飞虱传播的 BYSMV。
