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KMID : 1160220230510040195
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Mycobiology
2023 Volume.51 No. 4 p.195 ~ p.209
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Current Studies on Bakanae Disease in Rice: Host Range, Molecular Identification, and Disease Management
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An Yu-Na
Chandrasekaran Murugesan
Choi Hyo-Won
Kim Ki-Deok
Chun Se-Chul
Chandrasekaran Murugesan
Choi Hyo-Won
Kim Ki-Deok
Chun Se-Chul
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Abstract
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The seed borne disease such as bakanae is difficult to control. Crop yield loss caused bybakanae depending on the regions and varieties grown, ranging from 3.0% to 95.4%.
Bakanae is an important disease of rice worldwide and the pathogen was identified asFusarium fujikuroi Nirenberg (teleomorph: Gibberella fujikuroi Sawada). Currently, four Fusaria(F. fujikuroi, F. proliferatum, F. verticillioides and F. andiyazi) belonging to F. fujikuroi speciescomplex are generally known as the pathogens of bakanae. The infection occurs throughboth seed and soil-borne transmission. When infection occurs during the heading stage, riceseeds become contaminated. Molecular detection of pathogens of bakanae is importantbecause identification based on morphological and biological characters could lead to incorrectspecies designation and time-consuming. Seed disinfection has been studied for a longtime in Korea for the management of the bakanae disease of rice. As seed disinfectantshave been studied to control bakanae, resistance studies to chemicals have been also conducted.
Presently biological control and resistant varieties are not widely used. The detectionof this pathogen is critical for seed certification and for preventing field infections. In SouthKorea, bakanae is designated as a regulated pathogen. To provide highly qualified rice seedsto farms, Korea Seed & Variety Service (KSVS) has been producing and distributing certifiedrice seeds for producing healthy rice in fields. Therefore, the objective of the study is tosummarize the recent progress in molecular identification, fungicide resistance, and themanagement strategy of bakanae.
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KEYWORD
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Bakane disease, Fusarium fujikori, rice, molecular identification
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