http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
한국의 딸기세균모무늬병 발생분포 및 딸기세균모무늬병균 특성조사
윤명주,명인식,이재연,김유신,이용환,김대영,이영기 한국식물병리학회 2016 식물병연구 Vol.22 No.1
Nationwide survey for angular leaf spot (ALS) of strawberry caused by Xanthomonas fragariae, aquarantine disease in Korea, was performed in November 2012. In the survey, ALS was observed ineighty eight farmers’ fields of Sukok, Jinju and Okjong, Hadong in Gyeongnam Province, and one fieldin Namwon of Jeollabuk Province. The infected field of Namwon closed immediately after the diseasediagnosed ALS. In detailed survey of Sukok and Okjong areas during February 2012 to January 2015,ALS occurrence decreased from 45% farmer’s fields on December 2012 to 5% on January 2015, andfrom 38% on November 2013 to 5% on January 2015, respectively. Phenotypic characteristics of theKorean strains were similar to those of the type strain of X. fragariae. A multilocus sequence analysisof Korean strains of X. fragariae was conducted using four genes; dnaK, fyuA, gyrB, and rpoD. All theKorean strains had the same sequences of the four genes. The concatenated sequences of the Koreanstrains shared 100% with that of the type strain of X. fragariae. All strawberry cultivars tested weresusceptible to the strains of X. fragariae two weeks after inoculation. The inoculated sites were necrosisand expanded, which were rated 4 based on evaluation of inoculation site.
Gopal Nagarajan,남명현,송정영,유성준,김홍기 한국식물병리학회 2004 Plant Pathology Journal Vol.20 No.4
Fusarium oxysporum f. sp. fragariae is a fungal pathogen causing strawberry wilt disease. The random amplified polymorphic DNA (RAPD) and restriction fragment length polymorphisms (RFLPs) of intergenic spacer (IGS) region of rDNA were used to identify genetic variation among 22 F. oxysporum f. sp. fragariae isolates. All isolates could be distinguished from each other by RAPD analysis and RFLP of 2.6 kb amplified with primer CNS1 and CNL12 for IGS region of rDNA. Cluster analysis using UPGMA showed eight distinct clusters based on the banding patterns obtained from RAPD and rDNA RFLP. These results indicate that F. oxysporum f. sp. fragariae isolates are genetically distinct from each other. There was a high level genetic variation among F. oxysporum f. sp. fragariae.
Gopal Nagarajan,남명현,송정영,김홍기,Sung Woo Kang,Sung Joon Yoo 한국식물병리학회 2006 Plant Pathology Journal Vol.22 No.3
Twenty-two isolates of Fusarium oxysporum f. sp. fragariae were obtained from diseased strawberry plants and their characteristics were investigated by vegetative compatibility group (VCG), random amplified polymorphic DNA (RAPD), and pathogenicity. Three major VCGs (A, B, and C) and one incompatible group were identified by nitrate reductase complementation test. The virulence pattern of the 22 isolates was studied in relation to four cultivars including Dochiodome, Redpearl, Maehyang and Akihime. RAPD markers were used to determine genetic relationship, and created three major clusters among the 22 isolates of F. oxysporum f. sp. fragariae. Isolates belong to VCG-C were strongly pathogenic, and relatively high correlation was existed among VCG and RAPD, and virulence. In addition, VCG and RAPD pattern between pathogenic and non-pathogenic isolates were distinctly different.
Fusarium oxysporum f. sp. fragariae에 감염된 딸기의 병태조직에 관한 연구
문병주,정후섭,Moon Byung Ju,Chung Hoo Sup 한국식물병리학회 1986 Plant Pathology Journal Vol.2 No.3
Histopathological changes of strawberry plants infected with Fusarium oxysporum f. sp. fragariae Winks & Williams were examined. In all sections of the plant parts including roots, crowns, petioles and runners naturally and artificially infected with the fungus, fungal hyphae and conidia, and their plugging were found in xylem vessels, and formation of cavities was noted in the vascular cylinders. The xylem vessels were not localized with pectic materials, tyloses were not formed, and xylem parenchyma cells were not hypertrophied. The results suggest that plugging or disconnection of xylem elements by the fungus may be an important factor in inducing characteristic symptoms associated with Fusarium wilt of strawberry. Fusarium oxysporum f. sp. fragariae에 의한 딸기 시들음병에 감염된 딸기 식물의 병태조직학적 특징을 광학현미경으로 조사한 결과 자연 또는 인공 감염된 뿌리, 관부, 잎자루 및 포복지의 도관내에는 본 병균의 균사와 대형, 소형 분생포자가 관찰되었으며, 이들 균체에 의한 도관의 폐쇄와 유관속내에 형성된 강(Cavity)이 관찰되었으나 다른 분화형에서 볼 수 있는 도관유조직의 비대현상, 분충체 및 pectin 물질에 의한 도관폐쇄는 관찰할 수 없었다. 따라서 딸기 시들음병의 위조발생은 균체에 의한 도관의 폐쇄가 중요한 요인으로 생각되었다.
Nagarajan Gopal,Kang Sung-Woo,Nam Myeong-Hyeon,Song Jeong-Young,Yoo Sung-Joon,Kim Hong-Gi The Korean Society of Plant Pathology 2006 Plant Pathology Journal Vol.22 No.3
Twenty-two isolates of Fusarium oxysporum f. sp. fragariae were obtained from diseased strawberry plants and their characteristics were investigated by vegetative compatibility group (VCG), random amplified polymorphic DNA (RAPD), and pathogenicity. Three major VCGs (A, B, and C) and one incompatible group were identified by nitrate reductase complementation test. The virulence pattern of the 22 isolates was studied in relation to four cultivars including Dochiodome, Red-pearl, Maehyang and Akihime. RAPD markers were used to determine genetic relationship, and created three major clusters among the 22 isolates of F. oxysporum f. sp. fragariae. Isolates belong to VCG-C were strongly pathogenic, and relatively high correlation was existed among VCG and RAPD, and virulence. In addition, VCG and RAPD pattern between pathogenic and non-pathogenic isolates were distinctly different.
딸기 위황병원균 Fusarium oxysporum f sp. fragariae의 살균제 감수성 평가
권슬기(Seul Ki Kwon),전창욱(Chang-Wook Jeon),남명현(Myeong Hyeon Nam),곽연식(Youn-Sig Kwak) 한국농약과학회 2020 농약과학회지 Vol.24 No.1
Strawberry is an important cash crop worldwide and mainly produced in China, the United States, Mexico, Egypt, Turkey, and Spain. In Korea, it is also an economically valuable agriculture product of about $ 667 million annually. Fusarium wilt (Fusiarum oxysporum), anthracnose (Colletotrichum spp.) and gray mold (Botrytis cinerea) disease have been known as major biological problems in strawberry production. Fusarium wilt management depended on the disease-free plant and soil fumigants, but no appropriate fungicides have been selected. In this study, EC<SUB>50</SUB> values of three fungicides were evaluated for 93 Fusarium oxysporum f sp. fragariae strains isolated from five regions nationwide. ANOVA analyses and Duncan’s test to investigate the relationship between EC<SUB>50</SUB> values and biological factors were studied. The most important finding in this study was that EC<SUB>50</SUB> of Tebuconazole was significantly different by location and EC<SUB>50</SUB> of Prochloraz Mn showed segregation based on the strawberry variety. Copper hydroxide showed no correlation with environmental parameters. The results will provide a piece of fundamental knowledge for preserving the strawberry Fusarium wilt disease.
Jiwei Ruan,용영록,Chunmei Yang,Guoxian Wang,Lifang Wu,Shenchong Li,Pang Tao,Chengfei Liao,Ji-Hua Wang 한국원예학회 2017 Horticulture, Environment, and Biotechnology Vol.58 No.6
Studies on the inheritance of day-neutrality, a highly desirable trait in strawberry (Fragaria×ananassa),have not been conclusive because flowering phenotypes were evaluated based on different materials and experimentalsites. In the present study, selfed and crossed progenies of Day-neutral (DN) ‘Albion’ and June-bearing (JB) ‘Akihime’cultivars, namely ‘Albion’ × ‘Albion’, ‘Akihime’ × ‘Akihime’, and ‘Akihime’ × ‘Albion’, were established in 2013and 2014. The flowering phenotype (DN or JB) of seedlings from each of the three progenies, as well as of parentalplants, was evaluated for two successive years (2015 and 2016) in Central Yunnan, China, and their segregationratios were used to elucidate day-neutrality inheritance. Single dominant gene inheritance was demonstrated forday-neutrality, although minor genes (from the JB parent ‘Akihime’) likely increase DN magnitude. During thejuvenile stage (i.e., long before the first inflorescence), the major gene controlling day-neutrality may not beexpressed. We provide basic information for DN gene mapping and cloning, as well as materials (progenies) fordomestic DN strawberry breeding.
Dun Wanwan,Wei Xuan,Wang Lu,Liu Jingjing,Zhao Jing,Sun Peipei,Fang Congbing,Xie Xingbin 한국식물학회 2023 Journal of Plant Biology Vol.66 No.1
The strawberry (Fragaria×ananassa) is an economically important perennial crop plant, and its fruits are rich in vitamin C (l-ascorbic acid [AsA]) and other nutrients. l-galactono-1,4-lactone dehydrogenase (GalLDH) is a key enzyme in the terminal step of AsA biosynthesis pathway in plants. Here, the GalLDH gene (FaGalLDH) was cloned from ‘Benihoppe’ strawberries. AsA content increased during fruit development and peaked at the red-ripening stage, and AsA concentrations in diferent tissues were correlated with enzyme activity and transcription level of FaGalLDH. Transient over-expression of FaGalLDH in strawberry fruit increased its overall expression and AsA production signifcantly, whereas transient RNAi of FaGalLDH decreased its expression and AsA content. Furthermore, the optimum pH and temperature for FaGalLDH activity were 8.0 and 25 °C, respectively. Ectopic expression of the FaGalLDH gene in Arabidopsis resulted in higher AsA content and enzyme activity in transgenic lines than in wild-type plants. FaGalLDH over-expression resulted in enhanced tolerance to salt stress due to reduced accumulation of malondialdehyde, H2O2, and O2 .−, as well as higher survival rates, root length, proline content, and superoxide dismutase, peroxidase, and catalase activities. These results provide useful information regarding AsA biosynthesis and salt tolerance, which may help to improve strawberry fruit quality and productivity.