Complete genome resource unravels the close relation of an Indian Xanthomonas oryzae pv. oryzae strain IXOBB0003 with Philippines strain causing bacterial blight of rice
3 BIOTECH(2023)
摘要
Xanthomonas oryzae pv. oryzae (Xoo) is a pathogen of concern for rice growers as it limits the production potential of rice varieties worldwide. Due to their high genomic plasticity, the pathogen continues to evolve, nullifying the deployed resistance mechanisms. It is pertinent to monitor the evolving Xoo population for the virulent novel stains, and the affordable sequencing technologies made the task feasible with an in-depth understanding of their pathogenesis arsenals. We present the complete genome of a highly virulent Indian Xoo strain IXOBB0003, predominantly found in northwestern parts of India, by employing next-generation sequencing and single-molecule sequencing in real-time technologies. The final genome assembly comprises 4,962,427 bp and has 63.96% GC content. The pan genome analysis reveals that strain IXOBB0003 houses total of 3655 core genes, 1276 accessory genes and 595 unique genes. Comparative analysis of the predicted gene clusters of coding sequences and protein count of strain IXOBB0003 depicts 3687 of almost 90% gene clusters shared by other Asian strains, 17 unique to IXOBB0003 and 139 CDSs of IXOBB0003 are shared with PXO99(A). AnnoTALE-based studies revealed 16 TALEs conferred from the whole genome sequence. Prominent TALEs of our strain are found orthologous to TALEs of the Philippines strain PXO99(A). The genomic features of Indian Xoo strain IXOBB0003 and in comparison with other Asian strains would certainly contribute significantly while formulating novel strategies for BB management.
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关键词
Bacterial blight,Xoo strain IXOBB0003,Virulent,Phylogenome
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