Control of Fusarium and nematodes by entomopathogenic fungi for organic production of Zingiber officinale
JOURNAL OF NATURAL MEDICINES(2021)
Abstract
Ginger (genus Zingiber ) is widely used as a spice and a medicinal herb worldwide and is the major ingredient of traditional local drinks such as jamu in Southeast Asia. Because ginger is frequently consumed, there is an increasing interest in organic ginger production without the use of synthetic agrochemicals. Recent studies have reported that certain kinds of entomopathogenic fungi (EPF) can establish endophytic- or mycorrhiza-like relationships with plants, thereby promoting plant growth and health, in addition to their typical role in crop protection as biological control agents. In this study, we explored the possibility of non-entomopathogenic effects of EPF Beauveria bassiana and Cordyceps fumosorosea on ginger plants ( Zingiber officinale ) via antagonism with Fusarium oxysporum or the parasitic nematode Meloidogyne incognita . The two EPF negatively affected the growth of F. oxysporum and survival of M. incognita in vitro. The application of EPF did not have any negative effect on the growth of ginger plants. Soil chemical properties were not different between the plots with or without EPF application, while the diversity of soil bacteria was observed to increase on application of EPF. At least C. fumosorosea appeared to persist in soil during the period of ginger cultivation. Thus, these EPF are potentially useful tools for producing chemical-free ginger.
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Key words
Beauveria bassiana, Cordyceps fumosorosea, Fusarium oxysporum, Meloidogyne incognita, Entomopathogenic fungi, Zingiber officinale
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