Screening of endophytic fungi against southern blight disease pathogen-Sclerotium delphinii in Dendrobium catenatum / 中国中药杂志
China Journal of Chinese Materia Medica
; (24): 5459-5464, 2020.
Article
em Zh
| WPRIM
| ID: wpr-878781
Biblioteca responsável:
WPRO
ABSTRACT
In order to screen the endophytic fungi that can enhance the host(Dendrobium catenatum) resistance to Sclerotium delphinii, the antagonism between each of the 43 endophytic fungi and the pathogen S. delphinii were tested. The results showed that 6 endophytic fungi(DCR2, DCR5, DCR21, DCR22, DCR42, DCR43) have strong activities against the pathogen, the inhibition rates were 49.2%, 49.2%, 47.2%, 56.2%, 53.2%, 48.0%, respectively. Then D. catenatum plantlets were inoculated with both S. delphinii and each of these six endophytic fungi. As a result, the incidence rates of leaves and stems of the D. catenatum plantlets inoculated with DCR2 and the pathogen were both significantly lower than those with other treatments, and the plantlet death rate was 0. It showed that DCR2 Trichoderma polysporum could effectively inhibit the southern blight disease of D. catenatum. Through the endophytic fungal re-isolation test, it was found that DCR2 can colonize in the roots, stems, and leaves of D. catenatum. The research will provide new ideas for the prevention and treatment of the southern blight disease of D. catenatum. It is also significant for reducing pesticide use, ensuring food safety, and promoting the sustainable development of D. catenatum industry. Furthermore, it will provide a basis for the disease control in other crops.
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Assunto principal:
Basidiomycota
/
Raízes de Plantas
/
Dendrobium
/
Endófitos
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Fungos
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Hypocreales
Tipo de estudo:
Diagnostic_studies
/
Screening_studies
Idioma:
Zh
Revista:
China Journal of Chinese Materia Medica
Ano de publicação:
2020
Tipo de documento:
Article