Research in Plant Disease最新文献

First Report of Bacterial Spot Disease Caused by Pseudomonas capsici on Castor Bean in Korea 韩国首次报告蓖麻荚膜假单胞菌引起的菌斑病

Research in Plant Disease Pub Date : 2023-12-31 DOI: 10.5423/rpd.2023.29.4.440

Heeil Do, Seung Yeup Lee, Bang Wool Lee, H. Ham, Mi-Hyun Lee, Young Kee Lee

引用次数: 0

First Report of Pectobacterium aroidearum Causing Soft Rot on Zamioculcas zamiifolia 首次报告果胶杆菌在 Zamioculcas zamiifolia 上引发软腐病

Research in Plant Disease Pub Date : 2023-12-31 DOI: 10.5423/rpd.2023.29.4.445

Kyoung-Taek Park, Soo-Min Hong, L. Ten, C. Back, Seung-Yeol Lee, In-Kyu Kang, Hee-Young Jung

引用次数: 0

Identification and Pathogenicity of Rhizoctonia solani Isolates Causing Leaf and Stem Rot in Three-Leaf Ladybell 鉴定引起三叶瓢虫叶和茎腐病的根瘤菌分离株并确定其致病性

Research in Plant Disease Pub Date : 2023-12-31 DOI: 10.5423/rpd.2023.29.4.377

Wan-Gyu Kim, Hyo-Won Choi, Gyo-Bin Lee, W. Cho

{"title":"Identification and Pathogenicity of Rhizoctonia solani Isolates Causing Leaf and Stem Rot in Three-Leaf Ladybell","authors":"Wan-Gyu Kim, Hyo-Won Choi, Gyo-Bin Lee, W. Cho","doi":"10.5423/rpd.2023.29.4.377","DOIUrl":"https://doi.org/10.5423/rpd.2023.29.4.377","url":null,"abstract":"In 2020 and 2021, we surveyed diseases of three-leaf ladybell (Adenophora triphylla) plants grown in fields at two locations in Korea. During the disease surveys, severe leaf rot symptoms were observed on the young plants in Hongseong, and stem rot symptoms on the adult plants in Cheolwon. The incidence of leaf rot was 5‒60%, and that of stem rot 1‒10%. We obtained 6 fungal isolates each from the leaf rot lesions and the stem rot lesions. All the isolates were morphologically identified as Rhizoctonia solani. Anastomosis test and investigation of cultural features of the fungal isolates revealed that the isolates from the leaf rot lesions corresponded to R. solani AG-1(IB), and those from the stem rot lesions to R. solani AG-2-2(IIIB). Two isolates each of R. solani AG-1(IB) and AG-2-2(IIIB) were used for DNA sequence analysis and pathogenicity test to three-leaf ladybell plants through artificial inoculation. The anastomosis groups and cultural types of the R. solani isolates were confirmed by the sequence analysis. The pathogenicity tests revealed that the isolates of R. solani AG- 1(IB) caused only leaf rot symptoms on the inoculated plants, and those of R. solani AG-2-2(IIIB) leaf rot and stem rot symptoms. The induced symptoms were similar to those observed in the fields investigated. Leaf and stem rot of three-leaf ladybell caused by the two anastomosis groups and cultural types of R. solani is first reported in this study.","PeriodicalId":36349,"journal":{"name":"Research in Plant Disease","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139132054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First Report of Pectobacterium brasiliense Causing Bitter Melon Soft Rot Disease in Korea 韩国首次报告巴西果胶杆菌引发苦瓜软腐病

Research in Plant Disease Pub Date : 2023-12-31 DOI: 10.5423/rpd.2023.29.4.452

Kyoung-Taek Park, L. Ten, Soo-Min Hong, C. Back, Seung-Yeol Lee, Hee-Young Jung

引用次数: 0

Disease Resistance-Based Management of Alternaria Black Spot in Cruciferous Crops 以抗病性为基础管理十字花科作物中的交替黑斑病

Research in Plant Disease Pub Date : 2023-12-31 DOI: 10.5423/rpd.2023.29.4.363

Young Hee Lee, Su Min Kim, Seoung Bin Lee, Sang Hee Kim, Byung-Wook Yun, J. Hong

{"title":"Disease Resistance-Based Management of Alternaria Black Spot in Cruciferous Crops","authors":"Young Hee Lee, Su Min Kim, Seoung Bin Lee, Sang Hee Kim, Byung-Wook Yun, J. Hong","doi":"10.5423/rpd.2023.29.4.363","DOIUrl":"https://doi.org/10.5423/rpd.2023.29.4.363","url":null,"abstract":"Alternaria black spots or blights in cruciferous crops have been devastating diseases worldwide and led to economic losses in broccoli, Chinese cabbage, kale, radish, rapeseed, etc. These diseases are caused by different Alternaria spp., including A. brassicae, A. brassicicola and A. raphani transmitted from infected seeds or insect vectors. Efforts to excavate disease resistance traits of cruciferous crops against Alternaria black spots or blights have been demonstrated. Genetic resource of disease resistance was investigated in the wild relatives of cruciferous crops, and different cultivars were screened under different inoculation conditions. Development of the disease-resistant lines against Alternaria black spots or blights was also tried via genetic transformation of the cruciferous crops using diverse plant defence-associated genes. Plant immunity activated by pre-treatment with chemicals, i. e. β-amino-n-butyric acid and melatonin, was suggested for reducing Alternaria black spots or blights in cruciferous crops. The disease resistance traits have also been evaluated in model plant Arabidopsis originating from different habitats. Various plant immunity-related mutants showing different disease responses from wild-type Arabidopsis provided valuable information for managing Alternaria black spots or blights in cruciferous crops. In particular, redox regulation and antioxidant responses altered in the Alternaria-infected mutants were discussed in this review.","PeriodicalId":36349,"journal":{"name":"Research in Plant Disease","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139132768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Occurrence of Plant-Parasitic Nematodes on Ornamental Foliage Plants, Citrus Orchards, and Tea Plantations in Korea 韩国观叶植物、柑橘园和茶园中植物寄生线虫的发生情况

Research in Plant Disease Pub Date : 2023-12-31 DOI: 10.5423/rpd.2023.29.4.459

Sungchan Huh, Namsook Park, Yongchul Kim, Insoo Choi

引用次数: 0

Analysis of Molecular Diversity in Castanopsis sieboldii with Felt Disease Caused by Septobasidium sp. 由七鳃鳗(Septobasidium sp.)引起菲尔特病的西波胆(Castanopsis sieboldii)的分子多样性分析

Research in Plant Disease Pub Date : 2023-12-31 DOI: 10.5423/rpd.2023.29.4.420

Geon-Woo Lee, Sang-Tae Seo, Byeongjin Cha, Sang-Sub Han

{"title":"Analysis of Molecular Diversity in Castanopsis sieboldii with Felt Disease Caused by Septobasidium sp.","authors":"Geon-Woo Lee, Sang-Tae Seo, Byeongjin Cha, Sang-Sub Han","doi":"10.5423/rpd.2023.29.4.420","DOIUrl":"https://doi.org/10.5423/rpd.2023.29.4.420","url":null,"abstract":"In 2020, within the Dongbaekdongsan area in Jeju Island, a Septobasidium sp. associated with a felt disease in Castanopsis sieboldii (Makino) Hatus. ex T. Yamaz. & Mashiba was identified. The symptom included the presence of brown, thin, and silk-like mycelial mats attached to the tree's bark, displaying variations in size from large to small. To induce hyphal growth, the samples collected were incubated in a moist chamber, and the newly formed hyphae were subjected to genomic DNA extractions. The nucleotide sequences of the internal transcribed spacer and small subunit rDNA genes were determined, and molecular characteristics among the isolates were investigated through polymerase chain reaction-based restriction fragment length polymorphism analysis. This Septobasidium sp. exhibited distinct morphological and phylogenetic features compared to those that were previously reported in South Korea. Consequently, this strain is taxonomically classified as a provisionally novel species of Septobasidium. Furthermore, the observed felt disease exhibited a high degree of host specificity, as it was exclusively identified in C. sieboldii without occurrence in other tree species at the time of observation.","PeriodicalId":36349,"journal":{"name":"Research in Plant Disease","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139135282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Milling on Reduction of Fusarium Mycotoxins in Barley 研磨对减少大麦中镰刀霉菌毒素的影响

Research in Plant Disease Pub Date : 2023-12-31 DOI: 10.5423/rpd.2023.29.4.384

S. Baek, Mi-Jeong Lee, Ju-Young Nah, Soo Bin Yim, Jungsun Choi, Jang Nam Choi, J. Jang, Jung-Wook Yang, Theresa Lee

{"title":"Effect of Milling on Reduction of Fusarium Mycotoxins in Barley","authors":"S. Baek, Mi-Jeong Lee, Ju-Young Nah, Soo Bin Yim, Jungsun Choi, Jang Nam Choi, J. Jang, Jung-Wook Yang, Theresa Lee","doi":"10.5423/rpd.2023.29.4.384","DOIUrl":"https://doi.org/10.5423/rpd.2023.29.4.384","url":null,"abstract":"Milling can affect the distribution of mycotoxins in small grains. To investigate the effects on barley, seven hulled barley and three naked barley samples naturally contaminated with trichothecenes and zearalenone were obtained and milled at commonly used rates. Both barleys were simultaneously contaminated with deoxynivalenol and its acetyl derivatives (98.1–2,197.8 μg/kg), nivalenol and its acetyl derivative (468.5–3,965.1 μg/kg), and zearalenone (4.1–274.2 μg/kg). Milling hulled barleys at a rate of 67% reduced the mycotoxins in the grain by 90.9% for deoxynivalenol, 87.7% for nivalenol, and 93.2% for zearalenone. The reduction in naked barleys (milled at a rate of 70%) was slightly lower than in hulled barleys, with 88.6% for deoxynivalenol, 80.2% for nivalenol, and 70.1% for zearalenone. In both barleys, the acetyl derivatives of deoxynivalenol and nivalenol were reduced by 100%. However, barley bran had significantly higher mycotoxin concentrations than the pre-milled grains: bran from hulled barley had a 357% increase in deoxynivalenol, 252% increase in nivalenol, and 169% increase in zearalenone. Similarly, bran from naked barley had a 337% increase in deoxynivalenol, 239% increase in nivalenol, and 554% increase in zearalenone. These results show that mycotoxins present in the outer layers of barley grain can be effectively removed through the milling process. As milling redistributes mycotoxins from the grain into the bran, however, it shows that advance monitoring of barley bran is recommended when using barley bran for human or animal consumption.","PeriodicalId":36349,"journal":{"name":"Research in Plant Disease","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139132176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biological Control of White Rot in Apple Using Bacillus spp. 利用枯草芽孢杆菌对苹果白腐病进行生物防治

Research in Plant Disease Pub Date : 2023-12-31 DOI: 10.5423/rpd.2023.29.4.390

Ha-Kyoung Lee, Jong-Hwan Shin, Seong-Chan Lee, You-Kyoung Han

{"title":"Biological Control of White Rot in Apple Using Bacillus spp.","authors":"Ha-Kyoung Lee, Jong-Hwan Shin, Seong-Chan Lee, You-Kyoung Han","doi":"10.5423/rpd.2023.29.4.390","DOIUrl":"https://doi.org/10.5423/rpd.2023.29.4.390","url":null,"abstract":"Apple white rot, caused by Botryosphaeria dothidea, is one of the important diseases in Korea. B. dothidea can cause pre- and postharvest decay on apple fruit as well as canker and dieback of apple trees. In this study, we isolated bacteria from the trunk of apple trees and tested their antagonistic activity against B. dothidea. Five bacterial isolates (23-168, 23-169, 23-170, 23-172, and 23-173) were selected that were most effective at inhibiting the mycelial growth of the pathogens. The isolate 23-172 was identified as Bacillus amyloliquefaciens and four isolates 23-168, 23-169, 23-170, and 23-173 were identified as Bacillus velezensis by RNA polymerase beta subunit (rpoB) and DNA gyraseA subunit (gyrA) gene sequencing. All isolates showed strong antagonistic activity against B. dothidea as well as Colletotrichum fructicola and Diaporthe eres. All isolates exhibited cellulolytic, proteolytic and phosphate solubilizing activities. In particular, two isolates 23-168, 23-169 were shown to significantly reduce the size of white rot lesions in pretreated apple fruits. These results will provide the basis for the development of a fungicide alternative for the control of white rot of apple.","PeriodicalId":36349,"journal":{"name":"Research in Plant Disease","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139133630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Colletotrichum Diversity within Different Species Complexes Associated with Fruit Anthracnose in South Korea and Their Fungicides In-Vitro Sensitivity 韩国与水果炭疽病有关的不同菌种群中 Colletotrichum 的多样性及其对杀真菌剂的体外敏感性

Research in Plant Disease Pub Date : 2023-12-31 DOI: 10.5423/rpd.2023.29.4.345

T. Chang, O. Hassan, Jong Yeob Jeon, Chi Hyun Kim, Dae Min Lee, Ju Sung Kim, Eun Chan Kang, Jaewon Kim

{"title":"Colletotrichum Diversity within Different Species Complexes Associated with Fruit Anthracnose in South Korea and Their Fungicides In-Vitro Sensitivity","authors":"T. Chang, O. Hassan, Jong Yeob Jeon, Chi Hyun Kim, Dae Min Lee, Ju Sung Kim, Eun Chan Kang, Jaewon Kim","doi":"10.5423/rpd.2023.29.4.345","DOIUrl":"https://doi.org/10.5423/rpd.2023.29.4.345","url":null,"abstract":"Anthracnose, caused by the Colletotrichum genus, comprises a significant number of plant pathogens and poses a major threat to fruit production worldwide, including South Korea. Colletotrichum species were identified associated with anthracnose in fruits such as apple, persimmon, plum, peach, jujube, walnut, and grape. A polyphasic approach, including morphology, multigene phylogenetics, and pathogenicity testing, was used. Additionally, the in-vitro sensitivity of identified Colletotrichum species to common fungicides was also evaluated. A total of nine Colletotrichum species within two complexes, namely gloeosporioides and acutatum, have been identified as the causal agents of anthracnose in common fruits in South Korea. In the gloeosporioides complex, we found Colletotrichum aenigma, C. fructicola, C. gloeosporioides, C. horii, C. siamense, and C. viniferum. Meanwhile, in the acutatum complex, C. fioriniae, C. nymphaeae, and C. orientalis were identified. Notably, C. fructicola, C. siamense, C. fioriniae, and C. nymphaeae were reported for the first time from apple, C. siamense, C. fioriniae and C. nymphaeae from plum, C. siamense, C. fructicola, and C. fioriniae from peach, C. siamense and C. horii from persimmon, C. fioriniae from Omija (Schisandra), C. orientalis from walnut, C. nymphaeae from jujube, and C. aenigma, C. fructicola, and C. siamense from grape. Fungicide sensitivity tests revealed significant variation in the EC50 values among specific Colletotrichum species when exposed to different fungicides. Moreover, the same Colletotrichum species isolated from different host plants displayed varying sensitivity to the same fungicide.","PeriodicalId":36349,"journal":{"name":"Research in Plant Disease","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139133431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0