Analyses of Multilocus Sequences and Morphological Features Reveal Ilyonectria Species Associated with Black Rot Disease of Gastrodia elata.
Plant Dis
; 108(2): 382-397, 2024 Feb.
Article
in En
| MEDLINE
| ID: mdl-37552163
ABSTRACT
Black rot is a common disease of Gastrodia elata, causing serious threats to G. elata production. In this study, a total of 17 Cylindrocarpon-like strains were isolated from G. elata black rot tissues. Multilocus sequence analyses based on ITS, HIS, TEF, and TUB combined with morphological characterizations were performed to identify six Ilyonectria species, including four new species, Ilyonectria longispora, I. sinensis, I. xiaocaobaensis, and I. yunnanensis, and two known species, I. changbaiensis and I. robusta. The pathogenicity of 11 isolates comprising type strains of the four new species and representative isolates from each of the six species was tested on healthy tissues of G. elata. All isolates were pathogenic to G. elata tissues, and symptoms were identical to black rot disease, confirming that our isolates were the causal agents of black rot disease of G. elata.
Key words
Full text:
1
Database:
MEDLINE
Main subject:
Gastrodia
Type of study:
Risk_factors_studies
Language:
En
Year:
2024
Type:
Article