番茄褐色皱纹果病毒(Tomato brown rugose fruit virus,ToBRFV)是烟草花叶病毒属(Tobamovirus)的新成员,主要危害番茄、辣椒等茄科作物。2014年在以色列番茄上首次发现该病毒,随后快速扩展至欧洲、美洲的茄科作物主产区。2019年我国山...番茄褐色皱纹果病毒(Tomato brown rugose fruit virus,ToBRFV)是烟草花叶病毒属(Tobamovirus)的新成员,主要危害番茄、辣椒等茄科作物。2014年在以色列番茄上首次发现该病毒,随后快速扩展至欧洲、美洲的茄科作物主产区。2019年我国山东发现ToBRFV侵染番茄,要警惕该病毒在我国暴发危害。本文综述了国内外ToBRFV的分布、为害症状、传播途径、鉴定方法以及致病性等方面的研究进展,并结合烟草花叶病毒属病毒的侵染循环特征,提出防控对策;此外,对未来的研究重点、防控技术研发等进行了展望。展开更多
This paper considers the distribution of technogenic 137Cs and naturally occurring radionuclides:238 U,232 Th and40 R concentrations in soils and 137Cs in atmospheric dry depositions by altitudinal belts of the Aragat...This paper considers the distribution of technogenic 137Cs and naturally occurring radionuclides:238 U,232 Th and40 R concentrations in soils and 137Cs in atmospheric dry depositions by altitudinal belts of the Aragats mountain massif,Republic of Armenia.Undisturbed soil samples were collected at altitudes from 1000 to 3200 m.For the determination of geochemical variability,two soil sampling campaigns were undertaken.Atmospheric dry depositions were sampled from five stations at1100-3200 m collected onto organic fiber filters between June and December 2016.137Cs activity was measured using a high-purity Germanium detector coupled to a multichannel analyzer(Canberra).Results indicated that specific activity of 137Cs in soils at 1000 m is495-528 Bq m^-2,andat3200 mis10,500-11,470 Bq m^-2.No correlation observed for 137Cs versus naturally occurring radionuclides,which varies in distribution by altitude.Specific activities of 137Cs in dry atmospheric depositions varies from 1.06 at 846 m to2.37 Bq m^-2 per quarter at 3200 m and increases as the altitude increases.Activities of 137Cs in soil and dry atmospheric deposition correlated significantly,and 137Cs activity in soils and atmospheric dry depositions decrease as the absolute altitude decreases.The 50-year effective dose from exposure to 137Cs fallout varies with altitude from 0.007 to 1.42 m Sv.展开更多
文摘番茄褐色皱纹果病毒(Tomato brown rugose fruit virus,ToBRFV)是烟草花叶病毒属(Tobamovirus)的新成员,主要危害番茄、辣椒等茄科作物。2014年在以色列番茄上首次发现该病毒,随后快速扩展至欧洲、美洲的茄科作物主产区。2019年我国山东发现ToBRFV侵染番茄,要警惕该病毒在我国暴发危害。本文综述了国内外ToBRFV的分布、为害症状、传播途径、鉴定方法以及致病性等方面的研究进展,并结合烟草花叶病毒属病毒的侵染循环特征,提出防控对策;此外,对未来的研究重点、防控技术研发等进行了展望。
基金a Grant No. 15T-1E061 ‘‘Radioecological Monitoring in the Area of the Republic of Armenia’’ 2015–2017, under support of State Committee of Science to the Ministry of Education and Science RA
文摘This paper considers the distribution of technogenic 137Cs and naturally occurring radionuclides:238 U,232 Th and40 R concentrations in soils and 137Cs in atmospheric dry depositions by altitudinal belts of the Aragats mountain massif,Republic of Armenia.Undisturbed soil samples were collected at altitudes from 1000 to 3200 m.For the determination of geochemical variability,two soil sampling campaigns were undertaken.Atmospheric dry depositions were sampled from five stations at1100-3200 m collected onto organic fiber filters between June and December 2016.137Cs activity was measured using a high-purity Germanium detector coupled to a multichannel analyzer(Canberra).Results indicated that specific activity of 137Cs in soils at 1000 m is495-528 Bq m^-2,andat3200 mis10,500-11,470 Bq m^-2.No correlation observed for 137Cs versus naturally occurring radionuclides,which varies in distribution by altitude.Specific activities of 137Cs in dry atmospheric depositions varies from 1.06 at 846 m to2.37 Bq m^-2 per quarter at 3200 m and increases as the altitude increases.Activities of 137Cs in soil and dry atmospheric deposition correlated significantly,and 137Cs activity in soils and atmospheric dry depositions decrease as the absolute altitude decreases.The 50-year effective dose from exposure to 137Cs fallout varies with altitude from 0.007 to 1.42 m Sv.
