Transcriptomics combined with physiological analysis provides insights into the mechanism of resistance to <i>Coleosporium bletiae</i> in <i>Bletilla striata</i>.

ABSTRACT:

Introduction

Bletilla striata (Orchidaceae) is a valuable traditional Chinese medicinal plant prized for its dried rhizomes. However, its cultivation faces significant challenges from leaf rust disease caused by Coleosporium bletiae, which causes substantial yield losses.

Methods

To investigate host resistance mechanisms, we compared rust-resistant and susceptible B. striata accessions through integrated transcriptomic and physiological analyses.

Results and discussion

Phenotypic observations revealed that while both resistant and susceptible plants developed rust spores by 2 days post-inoculation (dpi), the resistant accession exhibited a significantly slower progression of spore stack formation and lesion expansion on abaxial leaf surfaces over

SUBMITTER: Liu Q 

PROVIDER: S-EPMC12301390 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature