Article
Forestry
Bok-Nam Jung, Ji-Hyun Park, Chong-Kyu Lee, Hyeon-Dong Shin
Summary: The zonate leaf spot disease of Ailanthus altissima in Korea was found to be caused by Boeremia exigua, which was confirmed through microscopic examinations and molecular phylogenetic analyses.
Article
Agronomy
Beung Sung Kim, Jong Soo Kim, Young Jin Seo, Tae Young Oh, Jeong-Dong Lee
Summary: This study collected 96 accessions of Schisandra chinensis in South Korea to evaluate their phenotypes using principal component analysis and cluster analysis. Significant variations among the measured phenotypic traits were observed. The results provide valuable information for systematic characterization of species germplasm collections and tools for further research.
Article
Plant Sciences
Hyo Song Nam, Hyeon-Seok Park, Young Cheol Kim
Summary: During May and June 2021, leaf spot disease caused by Curvularia geniculata was identified for the first time in a commercial coffee plantation in Goheung, South Korea.
JOURNAL OF PHYTOPATHOLOGY
(2023)
Article
Plant Sciences
Sarah J. Pethybridge, Sean Murphy, Frank Hay, Eric Branch, Pratibha Sharma, Julie R. Kikkert
Summary: In conventional and organic table beet production, the fungicides propiconazole, difenoconazole, and premixtures of pydiflumetofen + fludioxonil or pydiflumetofen + difenoconazole can provide excellent control of Phoma leaf spot (PLS) and root decay caused by Neocamarosporium betae. Azoxystrobin also offers good control of PLS, while copper octanoate and microbial biopesticides containing Bacillus amyloliquefaciens D747 or B. mycoides strain J provide moderate control. These findings are important for designing effective disease control programs in table beet production.
Article
Horticulture
Elena Petrovic, Karolina Vrandecic, Jasenka Cosic, Edyta Dermic, Sara Godena
Summary: This study investigated leaf spot symptoms in two olive orchards in Istria and Kvarner Gulf, Croatia. Three isolates of Nigrospora species were identified as the causative agents of the leaf spot disease based on morphological characteristics, DNA sequence analysis, and phylogenetic analysis.
Article
Agriculture, Multidisciplinary
I. Fonseca-Guerra, C. Chiquillo, M. J. Padilla, M. Benavides-Rozo
Summary: Quinoa, considered the grain of the twenty-first century, is high in protein and beneficial for patients with obesity, dyslipidemia, and diabetes. However, its production can be affected by pathogens such as Pseudomonas syringae, as shown in this study from Colombia.
JOURNAL OF PLANT DISEASES AND PROTECTION
(2021)
Article
Food Science & Technology
Mohammad Hojjati, Samira Shahbazi, Hamed Askari, Abdorreza Mohammadi Nafchi, Mina Makari
Summary: Brown spot formation is a common quality problem in Iranian hazelnuts, characterized by necrosis and sloughing off of the pellicle and sunken surface lesions. The infected hazelnut samples showed higher total phenol content and antioxidant activity compared to non-infected samples. The infection also affected soluble protein content, color parameters, and fatty acids composition. The presence of a yeast-like fungus, Eremothecium coryli, was identified as the causative agent of the brown spots, and this is the first report of its occurrence in hazelnuts in Iran.
Article
Biochemistry & Molecular Biology
Bekale Be Ndong Dimitri Romain, Oliul Hassan, Ju Sung Kim, Taehyun Chang
Summary: A new species, A. koreana, was isolated from Atractylodes ovata in Korea, causing leaf-spot disease. It was identified through morphological and molecular analysis, showing distinct differences from other species and exhibiting moderate pathogenicity.
MOLECULAR BIOLOGY REPORTS
(2022)
Review
Plant Sciences
Roberto Buonaurio, Leen Almadi, Franco Famiani, Chiaraluce Moretti, Giovanni Enrico Agosteo, Leonardo Schena
Summary: Olive leaf spot (OLS) caused by Venturia oleaginea is a prevalent disease in olive-growing areas worldwide, leading to significant yield losses. Early detection of leaf symptoms is difficult, and the pathogen-induced leaf drop creates the illusion of healthy and restored plants. This review provides updated information on taxonomy, pathogen life cycle, epidemiology, diagnosis, and control strategies for OLS. Copper-based fungicides, the main method of control, are facing potential substitution due to regulations, making it urgent to find alternative strategies, especially for organic agriculture.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
J. Q. Ma, G. S. Bao, S. Y. Meng, Q. P. Zhou
Summary: This study reports the presence of C. microsporus in hulless barley in China and confirms the susceptibility of barley to this fungus.
JOURNAL OF PHYTOPATHOLOGY
(2023)
Article
Forestry
Dong-Hyeon Lee, Youngwoo Nam, Michael J. Wingfield, Hyungcheol Park
Summary: This study reports the presence of Dutch elm disease in South Korea for the first time and highlights the need for a nationwide survey of the disease.
Article
Agronomy
Mahtab Omidvari, Gavin R. Flematti, Ming Pei You, Payman Abbaszadeh-Dahaji, Martin J. Barbetti
Summary: This study investigated the effects of temperature, soil moisture, and Phoma medicaginis infection on the production of coumestrol in Medicago rugosa and Medicago scutellata. The results showed that higher temperatures and lower soil moisture levels, combined with P. medicaginis infection, significantly increased coumestrol production.
Article
Plant Sciences
Cuicui Wang, Yuhai Tang, Ning Qiao, Dezhen Zhang, Wenjuan Chi, Jie Liu, Haoqin Pan, Jintang Li
Summary: In August 2020, a new fungal disease caused by C. siamense was discovered on strawberry leaves in Shandong Province. The disease manifested as black spots on the back of the leaves.
JOURNAL OF PHYTOPATHOLOGY
(2022)
Article
Microbiology
Yanru Lan, Zhichen Yan, Tingyu Duan, Katrina Maria Ramonell
Summary: This study identified Alternaria tenuissima as the fungal species causing Luobuma leaf spot disease and evaluated the effectiveness of fungicides. The findings showed that hymexazol fungicide can be used to control the disease.
Article
Plant Sciences
Junying Li, Jingxuan Xu, Hongji Wang, Changfeng Wu, Jiaqi Zheng, Chaowen Zhang, Yuzhu Han
Summary: The sorghum-sudangrass hybrid is threatened by leaf spot disease caused by Nigrospora sphaerica, Colletotrichum boninense, and Didymella corylicola. C. boninense disrupts plant osmotic balance, leading to disease, while the hybrids improve tolerance and antioxidant properties to resist its damage.