共查询到20条相似文献，搜索用时 46 毫秒
1.
2.
甘蔗是最重要的糖料作物,由于其栽培过程中采用种茎无性繁殖,病毒病发生逐年加重.已知侵染甘蔗的病毒种类有甘蔗花叶病毒(Sugarcane mosaic virus,SCMV)、高粱花叶病毒(Sorghummosaic virus,SrMV)、甘蔗线条花叶病毒(Sugarcane streakmosaic virus,SCSMV)、甘蔗黄叶病毒(Sugarcane yellow leaf virus,SCYLV)、甘蔗斐济病病毒(Sugarcane Fiji disease virus,SFDV)、甘蔗线.条病毒(Sugarcane streak virus,SSV)和甘蔗杆状病毒(Sugarcane bacilliform virus,SCBV).文中简要介绍上述几种病毒的基本特性及其所致病害的发生特点,对目前甘蔗病毒病防治技术进行了评述,提出了我国甘蔗病毒研究中需要关注的若干问题. 相似文献
3.
江西甘蔗花叶病病原的分子鉴定 总被引：3，自引：0，他引：3
Sugarcane mosaic disease, caused by Sugarcane mosaic virus (SCMV), Sorghum mosaic virus (SrMV), Maize dwarf mosaic virus (MDMV) or Johnsongrass mosaic virus (JGMV) in Potyvirus, is one of the most important viral diseases of sugarcane. In the study, four primer pairs specific to SCMV, SrMV, MDMV and JGMV, respectively, were designed and used to detect 29 sugarcane leaf mosaic samples collected from 9 locations in Jiangxi province. The representative RT-PCR products were sequenced. The results showed that 22 samples were infected by SCMV, three by SrMV, and four were mix-infected by SCMV and SrMV. MDMV or JGMV were not identified in all samples. The result indicates that SCMV is the major pathogen of sugarcane mosaic disease in Jiangxi province, and SrMV is also a pathogen for the disease. 相似文献
4.
5.
我国12省市玉米矮花叶病病原鉴定及病毒致病性测定 总被引：11，自引：1，他引：10
利用甘蔗花叶病毒(Sugarcane mosaic virus,SCMV)单克隆抗体细胞株2B5腹水和SCMV、玉米矮花叶病毒(Maize dwarf mosaic virus,MDMV)、高粱花叶病毒(Sorghum mosaic virus,SrMV)和约翰逊草花叶病毒(Johnsongrass mosaic virus,JGMV)的特异性引物对我国浙江、江苏、上海、山东、河南、河北、北京、山西、陕西、甘肃、四川、云南12省市15个地点的176株玉米矮花叶病病样分别进行了间接ELISA和免疫捕获反转录PCR (IC-RT-PCR)检测,结果表明这些病样均含有SCMV,而无MDMV、SrMV或JGMV存在,表明上述12省市的玉米矮花叶病病原为SCMV。进一步对甘肃(GS)、四川(SC)、云南(YN)3个SCMV分离物的近全长CP基因进行了序列测定,并测定了浙江分离物(ZJ)和甘肃分离物(GS)在13个玉米品种上的致病性。 相似文献
6.
甘蔗花叶病毒福建分离物外壳蛋白基因的克隆及序列分析 总被引：3，自引：0，他引：3
A fujian isolate of Sugarcane mosaic virus named SCMV-FJ was isolated from infected sugarcane. Cloning and sequence analysis of the coat protein gene of this isolate was carried out. A pair of primers was designed and synthesized based on the nucleotide sequences of coat protein genes of sugarcane mosaic viruses reported. The coat protein gene of SCMV-FJ was amplified from the extracted total RNA of the infected sugarcane by using RT-PCR, and cloned into the pMD18-T vector. The sequencing result indicated that the cloned segment included a 1137 bp open reading frame(ORF) and a 228 bp 3' untranslated region, in which the ORF comprised the whole coat protein and part of the nuclear inclusion b. The nucleotide and the deduced amino acid sequences of the coat protein gene were compared with those of the other isolates or strains of SCMV subgroup reported in GenBank. The result showed that it shares 56.8%-97.1% and 55.3%-99.4% homology in nucleotide and the putative amino acid sequences, respectively, with the highest amino acid homology of 99.4% with SCMV-D. Thus it was identified as a SCMV-D. This experiment provided a rapid, sensitive and relatively inexpensive method for RT-PCR detection of SCMV. At the same time, the cloning of SCMV-FJ coat protein gene provided the foundation for plant gene engineering against SCMV. 相似文献
7.
果蔗脱毒种苗甘蔗花叶病、黄叶病和宿根矮化病分子检测 总被引：1，自引：0，他引：1
为监测2016-2017年种植的果蔗脱毒种苗脱毒效果,分别采集广州市南沙区和增城区、湛江市麻章区及华南农业大学甘蔗育种基地共83份果蔗脱毒种苗样本,进行甘蔗花叶病毒(SCMV)、高粱花叶病毒(SrMV)和甘蔗黄叶病毒(SCYLV)RT-PCR检测。结果表明SCMV的阳性样本数为3个,阳性检出率3.61%;SrMV的阳性样本数为0;SCYLV的阳性样本数为78个,阳性检出率93.98%。采用常规PCR和巢式PCR技术对采集于广州市增城区和华南农业大学甘蔗育种基地的30份果蔗脱毒种苗样本进行宿根矮化病菌(Lxx)检测,常规PCR检测阳性样本数为0,巢式PCR检测疑似阳性样本数为8,疑似阳性检出率26.67%。本研究采用茎尖组织培养脱毒技术培育的果蔗脱毒种苗能有效脱除果蔗种苗内的SCMV、SrMV和Lxx,但SCYLV的脱除效果有待进一步研究。 相似文献
8.
引起甘蔗花叶病的病原分子生物学进展 总被引：2，自引：1，他引：1
花叶病是最主要的甘蔗病毒病害之一,在全球种植甘蔗的国家或地区普遍发生,可导致甘蔗产量下降,糖分减少,给甘蔗生产带来严重的经济损失。引起甘蔗花叶病的病毒主要有甘蔗花叶病毒(Sugarcane mosaic virus,SCMV)、高粱花叶病毒(Sorghum mosaic virus,Sr MV)和甘蔗条纹花叶病毒(Sugarcane streak mosaic virus,SCSMV)。本文综述了这3种病毒的生物学特性、鉴定与检测、基因组结构与基因功能、遗传变异与分子进化等方面的研究进展,并讨论了对甘蔗花叶病的生态防控措施。 相似文献
9.
10.
Wendy A. Monger Gerard R.G. Clover Gary D. Foster 《European journal of plant pathology / European Foundation for Plant Pathology》2001,107(6):661-666
A partial sequence of Oat mosaic virus (OMV) has been obtained for four isolates of the virus from four European countries. This represents the first available sequence data for this important disease of winter-sown oats. The longest clone of 1699 nucleotides was obtained from infected English oats using a degenerate primer, designed to members of the Potyviridae family. Alignment of the predicted amino acid sequence with members of the Potyviridae showed closest identity with viruses of the Bymovirus genus. The predicted amino acid sequence has one open reading frame corresponding to part of the NIb and capsid protein, with a 3 untranslated region of 351 nucleotides, followed by a poly(A) tail. PCR primers were designed to the coat protein and NIb gene of members of the Bymovirus genus and used to obtain partial sequences of 1441 nucleotides at the 3 end of infected oats from both Wales and France. A specific primer set designed to the English isolate was used to generate a product of 701 nucleotides from OMV-infected oat leaves from Ireland. All four isolates are highly conserved at the amino acid level.The first two authors contributed equally to the work 相似文献
11.
Seifers DL Salomon R Marie-Jeanne V Alliot B Signoret P Haber S Loboda A Ens W She YM Standing KG 《Phytopathology》2000,90(5):505-513
A potyvirus (proposed name of Zea mosaic virus [ZeMV]) isolated from maize in Israel was analyzed by serology, sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) of capsid proteins, symptomatology, and sequencing. Parts of the nuclear inclusion b, coat protein, and 3' regions were sequenced; the amino acid sequence of ZeMV capsid was determined by time-of-flight mass spectrometry (TOFMS). The results of these analyses were compared with those of similar analyses of the following potyviruses: Maize dwarf mosaic virus (MDMV), Sugarcane mosaic virus strain MDB (SCMV-MDB), Johnsongrass mosaic virus(JGMV), Sorghum mosaic virus (SrMV), and an isolate of MDMV from Israel. Indirect enzyme-linked immunosorbent assay using ZeMV antiserum detected only ZeMV, and reciprocal tests using MDMV, JGMV, or SrMV antisera failed to detect ZeMV. ZeMV cross-reacted weakly when SCMV-MDB antiserum was used. The mass of ZeMV capsid was determined to be 36,810 Da by SDS-PAGE and 34,216 Da by TOFMS. The ZeMV systemically infected johnsongrass (Sorghum halepense), but did not infect oat (Avena sativa), pearl millet (Pennisetum glaucum), barley (Hordeum vulgare), or rye (Secale cereale). Necrosis was caused in 19 sorghum lines by SrMV, in 15 by ZeMV, in 14 by MDMV, and in 5 by JGMV and SCMV-MDB. The nucleic acid and amino acid sequences of ZeMV clearly showed that it is not a strain of JGMV, MDMV, SCMV, or SrMV. 相似文献
12.
采自河北承德11 个表现矮花叶症状的玉米样品,用甘蔗花叶病毒(Sugarcane mosaic virus, SCMV)和白草花叶病毒
(Pennisetum mosaic virus, PenMV)简并引物扩增了基因组3′ 端约2. 1 kb 的片段并进行测序。Blast 结果表明其中8 个样
品含有PenMV。扩增到的PenMV 序列均为2 135 nt,包括部分NIb 基因(985 nt)、完整的CP 基因(909 nt)和3′-UTR(241
nt)。这8 个分离物CP 基因和3′-UTR 与GenBank 上其他PenMV 分离物相应序列的核苷酸一致率分别为89. 8% ~ 93． 4%
和95. 9% ~ 97. 9% 。根据扩增的2 135 nt 序列和CP 基因序列构建系统发育树,8 个分离物与GenBank 上其他PenMV 分离
物都分为2 个组:山西组和承德组。重组分析表明CD9 的CP 基因存在重组。 相似文献
13.
14.
In this study,the causal agents were identified from Canna indica viral diseased plants in Yunnan Province.The diseased C.indica plants mainly exhibited the symptoms like veinal chlorosis and yellowing,streak mosaic or interveinal chlorosis,while older leaves always showed veinal necrosis as well as chlorosis.Viral pathogens were detected by RT-PCR/PCR in 24 diseased C.indica samples collected from Kunming and Yuxi City in Yunnan Province.The results indicated that the main C.indica-infecting viruses were canna yellow mottle virus (CaYMV),bean yellow mosaic virus (BYMV),sugarcane mosaic virus (SCMV).CaYMV showed the highest detection rate of 87.5 %,whereas,the BYMV had the lowest rate of 16.7% in the 24 samples.Co-infections of CaYMV+SCMV,CaYMV+BYMV and CaYMV+SCMV+BYMV were also detected in the diseased samples.However,cucumber mosaic virus (CMV),tobamovirus,luteovirus,orthotospovirus,begomovirus and umbravirus were not detected in these samples.This is the first report of CaYMV and SCMV infecting C.indica in Yunnan province. 相似文献
15.
In this study,the causal agents were identified from Canna indica viral diseased plants in Yunnan Province.The diseased C.indica plants mainly exhibited the symptoms like veinal chlorosis and yellowing,streak mosaic or interveinal chlorosis,while older leaves always showed veinal necrosis as well as chlorosis.Viral pathogens were detected by RT-PCR/PCR in 24 diseased C.indica samples collected from Kunming and Yuxi City in Yunnan Province.The results indicated that the main C.indica-infecting viruses were canna yellow mottle virus (CaYMV),bean yellow mosaic virus (BYMV),sugarcane mosaic virus (SCMV).CaYMV showed the highest detection rate of 87.5 %,whereas,the BYMV had the lowest rate of 16.7% in the 24 samples.Co-infections of CaYMV+SCMV,CaYMV+BYMV and CaYMV+SCMV+BYMV were also detected in the diseased samples.However,cucumber mosaic virus (CMV),tobamovirus,luteovirus,orthotospovirus,begomovirus and umbravirus were not detected in these samples.This is the first report of CaYMV and SCMV infecting C.indica in Yunnan province. 相似文献
16.
甘蔗花叶病是中国蔗区危害最严重的病毒病,利用抗病品种是控制该病害最经济有效的方法。本研究以中国蔗区甘蔗花叶病的2种主要病原甘蔗线条花叶病毒分离物(SCSMV-JP1,Gen Bank登录号JF488064)和高粱花叶病毒分离物(Sr MV-HH,Gen Bank登录号DQ530434)为接种毒源,采用人工切茎接种和RT-PCR检测相结合方法,于2015年、2016年2次对中国近年选育的71个优良甘蔗新品种(系)进行了双抗SCSMV和Sr MV鉴定与评价。结果表明:71个优良甘蔗新品种(系)中,对SCSMV表现高抗到中抗的有24个,占33.8%,感病到高感的有47个,占66.2%;对Sr MV表现高抗到中抗的有27个,占38.03%,感病到高感的有44个,占61.97%。综合分析结果显示,福农30号、福农36号、闽糖01-77、桂糖02-467、柳城05-129、粤甘34号、粤甘40号、粤糖55号、粤糖96-86、粤糖00-318、赣蔗02-70、云蔗03-258、云蔗04-241、云蔗05-51、云蔗06-80等15个优良新品种(系)双抗SCSM V和Sr M V 2种病毒,占21.13%,其中粤甘34号、粤糖55号、云蔗03-258、云蔗05-51、云蔗06-80等5个优良新品种(系)对2种病毒均表现为高抗,占7.04%,。研究结果明确了71个甘蔗优良新品种(系)对甘蔗花叶病2种主要致病病原的抗性,筛选出双抗SCSMV和Sr MV的甘蔗优良新品种(系)15个,为生产用种选择和有效防控甘蔗花叶病提供了科学依据。 相似文献
17.
18.
甘蔗花叶病毒(Sugarcane mosaic virus,SCMV)是引起我国玉米矮化叶病的主要病毒。根据其基因组序列,SCMV可以分为4个组,其中第IV组分离物属于新出现的强毒株系。为了快速检测SCMV尤其是IV组分离物的发生情况,我们针对SCMV I-IV组及IV组分离物设计了6对引物,从中筛选出特异性最强的2对引物(I-IV-2F/I-IV-2R和IV-1F/IV-1R),进行PCR体系的优化。优化后的PCR体系为:退火温度51℃,dNTP终浓度为0.1 mM,引物终浓度为0.20 μM,TaqDNA聚合酶终浓度为0.015 U·μL-1。利用该体系, 引物对I-IV-2F/I-IV-2R和IV-1F/IV-1R均能够从50 ng感病叶片或0.05 ng病毒RNA中检测出SCMV。通过优化两对引物浓度比例建立了能同时检测SCMV所有分离物及第四组分离物的双重PCR体系。利用该体系从山东、河南及云南均检测出SCMV第IV组分离物的发生。本研究为SCMV尤其是SCMV第IV组分离物的快速检测提供了技术支持。 相似文献
19.
20.
玉米矮花叶病毒北京分离物复制酶基因的克隆及序列分析 总被引：2，自引：0，他引：2
以MDMV北京分离物RNA为模板,采用RT-PCR方法扩增了含复制酶(NIb)基因的DNA片段,将其克隆到p UC18载体上并进行序列分析。结果表明:NIb基因由1563个碱基组成,编码521个氨基酸并含有高度保守基序GDD。NIa/NIb和NIb/CP交界处的蛋白酶切割位点分别为Q/C和Q/S-NIb基因(北京分离物)在碱基数目上与保加利亚分离物完全一致,二者的核苷酸及氨基酸序列同源性分别为70.6%和76.6%,而与SCMV-SC的核苷酸及氨基酸序列同源性则高达81.3%和92.1%。 相似文献