MARA Key Laboratory of Pest Monitoring and Green Management, Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
Published: July 2024
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Article Abstract
Species-unique genes that encode specific proteins and have no homologs in other species play certain roles in the evolution of species and adaptations to external environments. Nevertheless, the biological roles of unique genes in plant pathogenic fungi remain largely unknown. Here, four -unique genes (-), which were highly expressed during the early infection stages, were functionally characterized in the rice blast fungus Subcellular localization assays revealed that Mug1, Mug2, and Mug4 were localized to the cytoplasm and that Mug3 was localized into the nuclei. Furthermore, through gene knockout and phenotypic analysis, only was found to be indispensable for fungal virulence and conidiation. Detailed microscopic analysis revealed that the deletion mutants of clearly exhibited reduced appressorial turgor pressure and invasive hyphal development. Taken together, our findings indicate that the -unique gene plays a vital role in infection-related morphogenesis and virulence in rice blast fungi and suggest the specific and important roles of species-unique genes.
Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insect Pests, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; National Key Laboratory for Rice Biology and Breeding, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China. Electronic address:
Protein PARylation is a reversible post-translational modification; however, its role in fungal virulence has remained elusive. Recently, Gao et al. demonstrated that PARylation of two 14-3-3 regulatory proteins by poly(ADP-ribose) polymerase is essential for the virulence of rice blast fungus, highlighting the critical regulatory function of PARylation in fungal pathogenicity.
The rice plant is one of the most significant crops in the world, and it suffers from various diseases. The traditional methods for rice disease detection are complex and time-consuming, mainly depending on the expert's experience. The explosive growth in image processing, computer vision, and deep learning techniques provides effective and innovative agriculture solutions for automatically detecting and classifying these diseases.
The rapid virulence variation of () to rice is a big challenge for rice blast control. Even though many studies have been done by scientists all over the world, the mechanism of virulence variation in remains elusive. AM16, an avirulent strain reported in our previous study, provides an excellent entry point to explore the mechanism of virulence variation in .
Blast disease caused by is a devastating disease that limits rice grain production. Here, we synthesized rhamnolipid (RL) modified silica nanoparticles (SiONPs) based on the excellent antimicrobial activity of RL against various phytopathogens and the role of SiONPs in alleviating plant diseases and investigated the roles and mechanisms of RL@SiONPs application in controlling rice blast disease. Two-week-old rice seedlings were sprayed with 100 mL/L of different materials before pathogen inoculation, and blast incidence was investigated 5 days after inoculation.
Background: Rice blast caused by Pyricularia oryzae is a major threat to rice production worldwide. Tainung 84 (TNG84) is an elite japonica rice cultivar developed through the traditional pedigree method. It has maintained superior blast resistance since its release in 2010.
