Identification, Characterization, and In Vitro Fungicide Sensitivity of <i>Paraphoma radicina</i>, the First Reported Cause of Root Rot in <i>Polygonatum sibiricum</i>.

ABSTRACT: Polygonatum sibiricum, a perennial medicinal and edible herb, has recently suffered severe root rot outbreaks in China, threatening its yield and quality. From 2023 to 2024, plants showing rhizome darkening and necrosis were observed in Tai'an, Shandong Province. A fungal isolate (HJ2B3) was consistently recovered from symptomatic tissues and confirmed as pathogenic through in vitro detached rhizome and potted plant inoculations. The isolate produced globose to subglobose, setose pycnidia and hyaline, aseptate conidia. Morphological characteristics, combined with ITS, EF1-α, and β-tubulin sequence analyses and phylogenetic evidence, identified the pathogen as Paraphoma radicina. In vitro fungicide assays using the mycelial growth rate method showed that d

SUBMITTER: Li W 

PROVIDER: S-EPMC12653157 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature