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- Title
Identification and characterization of Dicer-like genes in leaf rust pathogen (Puccinia triticina) of wheat.
- Authors
Dubey, Himanshu; Kiran, Kanti; Jaswal, Rajdeep; Bhardwaj, Subhash C.; Mondal, Tapan Kumar; Jain, Neha; Singh, N. K.; Kayastha, Arvind M.; Sharma, Tilak Raj
- Abstract
Puccinia triticina (P. triticina) is one of the most devastating fungal pathogens of wheat which causes significant annual yield loss to the crop. Understanding the gene regulatory mechanism of the biotrophic pathogen is one of the important aspects of host-pathogen interaction studies. Dicer-like genes are considered as important mediators of RNAi-based gene regulation. In this study, we report the presence of three Dicer-like genes (Pt-DCL1, Pt-DCL2, Pt-DCL3) in P. triticina genome identified through computational and biological analyses. Quantitative real-time PCR studies revealed an increase in the expression of these genes in germinating spore stages. Heterologous expression combined with mass spectrometry analysis of Pt-DCL2 confirmed the presence of a canonical Dicer-like gene in P. triticina. Phylogenetic analysis of the Pt-DCLs with the Dicer-like proteins from other organisms showed a distinct cluster of rust pathogens from the order Pucciniales. The results indicated a species-specific duplication of Dicer-like genes within the wheat rust pathogens. This study, for the first time, reports the presence of Dicer-dependent RNAi pathway in P. triticina that may play a role in gene regulatory mechanism of the pathogen during its development. Our study serves as a vital source of information for further RNAi-based molecular studies for better understanding and management of the wheat leaf rust disease.
- Subjects
PUCCINIA triticina; REGULATOR genes; MASS analysis (Spectrometry); RUST diseases; WHEAT rusts
- Publication
Functional & Integrative Genomics, 2020, Vol 20, Issue 5, p711
- ISSN
1438-793X
- Publication type
Article
- DOI
10.1007/s10142-020-00745-w