Kumar Shambhu, Farsana K B, Mufeeda K T, Singh Raghvendra, Mahadevakumar S
Forest Pathology Department, KSCSTE-Kerala Forest Research Institute, Peechi, Thrissur, Kerala, 680653, India.
Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, 221005, India.
Arch Microbiol. 2025 Jan 24;207(2):42. doi: 10.1007/s00203-025-04243-0.
During recent survey for the investigation of foliar fungi in Kerala, India, a new species of foliicolous hyphomycete, Paramyrothecium kamalii was discovered on living leaves of Matourea azurea (Plantaginaceae) based on morpho-cultural characteristics and multigene (ITS, LSU, cmdA, tub2, and rpb2) phylogenetic analysis; is described, illustrated and discussed. In vitro Pathogenicity tests were performed and confirmed the pathogenic nature of the fungus, thereby fulfilling Koch's postulates. Phylogenetically, P. kamalii forms a distinct clade, closely related to P. verroridum, P. indicum, and P. roridum. However, it differs morphologically by having longer conidiophores and conidia and lacks setae, unlike the closer species. The identification of P. kamalii as a new foliar pathogen provides critical insights for surveillance and effective control measure of this foliar disease of M. azurea in tropical ecosystems.
在印度喀拉拉邦近期对叶部真菌进行调查的过程中，基于形态培养特征和多基因（ITS、LSU、cmdA、tub2和rpb2）系统发育分析，在天蓝马图雷草（车前科）的活叶上发现了一种新的叶生丝孢菌——卡氏副帚霉；对其进行了描述、绘图并讨论。进行了体外致病性测试，证实了该真菌的致病性质，从而满足了科赫法则。在系统发育上，卡氏副帚霉形成一个独特的分支，与错头副帚霉、印度副帚霉和帚状副帚霉密切相关。然而，与亲缘关系较近的物种不同，它在形态上的差异在于分生孢子梗和分生孢子更长，且没有刚毛。将卡氏副帚霉鉴定为一种新的叶部病原菌，为热带生态系统中这种天蓝马图雷草叶部病害的监测和有效控制措施提供了关键见解。
