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| 1 | Papaya Ring Spot Virus:An Understanding of a Severe Positive-Sense Single Stranded RNA Viral Disease and Its Management显示文摘Viral diseases have been studied in-depth for reducing quality,yield,health and longevity of the fruit,to highlight the economic losses.Positive-sense single-stranded RNA viruses are more devastating among all viruses that infect fruit trees.One of the best examples is papaya ringspot virus(PRSV).It belongs to the genus Potyvirus and it is limited to cause diseases on the family Chenopodiaceae,Cucurbitaceae and Caricaceae.This virus has a serious threat to the production of papaya,which is famous for its high nutritional and pharmaceutical values.The plant parts such as leaves,latex,seeds,fruits,bark,peel and roots may contain the biological compound that can be isolated and used in pharmaceutical industries as a disease control.Viral disease symptoms consist of vein clearing and yellowing of young leaves.Distinctive ring spot patterns with concentric rings and spots on fruit reduce its quality and taste.The virus has two major strains P and W.The former cause disease in papaya and cucurbits while the later one in papaya.Virion comprises 94.4%protein,including a 36 kDa coat protein which is a component responsible for a non-persistent transmission through aphids,and 5.5%nucleic acid.Cross protection,development of transgenic crops,exploring the resistant sources and induction of pathogen derived resistance have been recorded as effective management of PRSV.Along with these practices reduced aphid population through insecticides and plant extracts have been found ecofriendly approaches to minimize the disease incidence.Adoption of transgenic crops is a big challenge for the success of disease resistant papaya crops.The aim of this review is to understand the genomic nature of PRSV,detection methods and the different advanced control methods.This review article will be helpful in developing the best management strategies for controlling PRSV. | Muhammad Umer Mustansar Mubeen Yasir Iftikhar Haider Ali Muhammad Zafar-ul-Hye Rafia Asghar Mazhar Abbas Malik Abdul Rehman Ernesto A.Moya-Elizondo Yuejun He | 2022 | Phyton-International Journal of Experimental Botany2022，91，10： | 1 |
| 2 | Styrax japonicus functional genomics:an efficient virus induced gene silencing(VIGS)system显示文摘VIGS(Virus-induced gene silencing),a method for posttranscriptional gene silencing,is an effective technique for investigating the activities of genes in plants.Since there is no report for available VIGS system in Styrax japonicus,the application of a VIGS approach that results in a gene knockdown to study gene function is limited.In this study,we compared the characteristics that could affect the viability of VIGS in S.japonicus,including the acetosyringone(AS)concentration,the Agrobacterium’s optical density and the inoculation method.The stable reference genes of S.japonicus were selected to validate the gene’s knockdown by quantitative PCR.As a result,we successfully constructed 2 VIGS systems based on TRV virus:vacuum with AS concentration of 200μmol·L^(-1)and OD600of 0.5,and friction-osmosis with AS concentration of 200μmol·L^(-1)and OD600of 1.0,which silencing efficiency was 83.33%and 74.19%,respectively.The successfully applied VIGS method provides a rapid and effective reverse gene functional analysis approach in S.japonicus to identify unknown gene functions. | Gangyu Sun Yiqian Ju Cuiping Zhang Lulu Li Xinqiang Jiang Xiaoman Xie Yizeng Lu Kuiling Wang Wei Li | 2024 | Horticultural Plant Journal2024，10，1： | 0 |
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