Molecular characterization of carbendazim resistance of Fusarium species complex that causes sugarcane pokkah boeng disease

作者：Shiqiang Xu, Jihua Wang, Haixuan Wang, Yixue Bao, Yisha Li, Muralidharan Govindaraju, Wei Yao, Baoshan Chen, Muqing Zhang · 发表于：BMC Genomics · 年份：2019 · DOI：10.1186/s12864-019-5479-6 · 被引用次数：45 · 研究领域：Fungal Plant Pathogen Control、Sugarcane Cultivation and Processing、Plant Disease Resistance and Genetics

BACKGROUND: Pokkah boeng is one of the most serious and devastating diseases of sugarcane and causes significant loss in cane yield and sugar content. Although carbendazim is widely used to prevent fungal diseases, the molecular basis of Fusarium species complex (FSC) resistance to carbendazim remains unknown. RESULTS: . Among carbendazim-induced mutant strains, SJ51M (F. verticillioides) had a CTG rather than CAG codon (Q134L) at position 134 of the FVER_09254 gene, whereas in the mutant strain HC30M (F. proliferatum) codon ACA at position 351 of the FPRO_07779 gene was replaced by ATA (T351I). Gene expression profiling analysis was performed for SJ51M and its corresponding wild type strain SJ51, with and without carbendazim treatment. The gene expression patterns in SJ51 and SJ51M changed greatly as evidenced by the detection of 850 differentially expressed genes (DEGs). Functional categorization indicated that genes associated with oxidation-reduction process, ATP binding, integral component of membrane, transmembrane transport and response to stress showed the largest expression changes between SJ51M and SJ51. The expression levels of many genes involved in fungicide resistance, such as detoxification enzymes, drug efflux transporters and response to stress, were up-regulated in SJ51M compared to SJ51 with and without carbendazim treatment. CONCLUSION: FSC was sensitive to carbendazim and had the potential for rapid development of carbendazim resistance. The transcriptome...