Journal
ANNUAL REVIEW OF PHYTOPATHOLOGY, VOL 58
Volume 58, Issue -, Pages 363-385Publisher
ANNUAL REVIEWS
DOI: 10.1146/annurev-phyto-010820-012908
Keywords
effector; false smut; flower-specific infection; mycotoxin; nutrient acquisition; resistance
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Funding
- National Natural Science Foundation of China [31630064, 31772241]
- Beijing Municipal Natural Science Foundation [8181001]
- National High-Level Talents Special Support Plan
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False smut of rice, caused by Ustilaginoidea virens, has become one of the most important diseases in rice-growing regions worldwide. The disease causes a significant yield loss and imposes health threats to humans and animals by producing mycotoxins. In this review, we update our understanding of the pathogen, including the disease cycle and infection strategies, the decoding of the U. virens genome, comparative/functional genomics, and effector biology. Whereas the decoding of the U. virens genome unveils specific adaptations of the pathogen in successfully occupying rice flowers, progresses in comparative/functional genomics and effector biology have begun to uncover the molecular mechanisms underlying U. virens virulence and pathogenicity. We highlight the identification and characterization of the produced mycotoxins and their biosynthetic pathways in U. virens. The management strategies for this disease are also discussed. The flower-specific infection strategy makes the pathogen a unique tool to unveil novel mechanisms for the interactions between nonobligate biotrophic pathogens and their hosts.
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