During September of 2020, Fruit suspected to be rot were observed on Choerospondias axillaris grown in an plantation in Yichun, Jiangxi, China. Approximately 10
Medicinal plants have been used since the dawn of human civilization and over the years have gained attention in the academic community due to their use beyond folk medicine. Numerous plants make up recipes to suppress symptoms of various illnesses, with emphasis on plants of the genus Plectranthus and their antimicrobial properties. In July 2016, P. ornatus plants observed in a garden located in Recife, Pernambuco state, Brazil, which demonstrated symptoms of dry stem rot. Two fungi isolated from stem lesions were identified by morphological comparisons and combined DNA sequences as Lasiodiplodia theobromae. This is the first report of this pathogen in this medicinal plant in the world.
Brown circular stem canker symptom was observed on common bean plants in Mahallat county, Markazi province, Iran, in the summer of 2022. Five identical associated fungal isolates were recovered from the infected plants. Morphological and molecular characterization of the representative isolate (UTR38) using the partial sequence of beta-tubulin, and as well as RNA polymerase II second largest subunit loci was done. The associated fungus was identified as Paramyrothecium roridum. Pathogenicity of the isolate UTR38 was conducted on six-week-old seedling stems of the P. vulgaris cultivar Sunray. The inoculated fungus was also reisolated from the inoculated plants to fulfill the Koch’s postulates. According to the results, this is the first report of P. roridum as the causal agent of stem canker disease in P. vulgaris in Iran and worldwide.
During routine field surveys in February 2023, in a commercial field located in Hegazah village, Qus, Qena governorate, Egypt (25°50’49"N 32°49’33"E), powdery mildew symptoms were observed on leaves of a local cultivar of fenugreek (Trigonella foenum-graecum L.). Microscopic characterization showed that conidiophores were cylindrical, hyaline, straight, erect to bent, forming conidia singly, primary conidia were apically narrowed, lanceolate, obtuse to pointed measuring, secondary conidia were ellipsoid or cylindrical, measuring. Germ tubes were close to the base. BLASTn results showed 100
Capsicum (Capsicum annum var. grossum Sendt.) is a popular and widely cultivated vegetable crop. The leaves showing white to grey irregular spots were collected. The organism was isolated and cultured on potato dextrose agar from the diseased samples. The pathogenicity was proved on capsicum seedlings by inoculating hyphal suspension of the organism and koch’s postulates were proved by re-isolating the pathogen. The pathogen was identified as Stemphylium lycopersici based on morphological, cultural and molecular investigation (ITS, gapdh and cmdA). This is the first report of Stemphylium lycopersici causing leaf spot of capsicum in India.
