Suppressive Effects of Vermicomposted-Bamboo Powder on Cucumber Damping-Off

JARQ : Japan Agricultural Research Quarterly
ISSN 00213551
書誌レコードID(総合目録DB) AA0068709X
本文フルテキスト
The suppressive effect of vermicomposted-bamboo powder (VB) derived from waste bamboo shoots on cucumber damping-off when VB is used as a nursery medium was characterized. A greenhouse inoculation experiment showed that the damping-off caused by each strain of Pythium aphanidermatum, P. ultimum var. ultimum, and Rhizoctonia solani AG1-IB was significantly reduced by VB compared to an autoclaved vermicomposted-bamboo powder (aVB) and a commercial-nursery medium (CNM). Due to the fact that the disease suppressiveness of VB was nulled by autoclaving, the soil biological factors were characterized with respect to those of the CNM by fluorescein diacetate (FDA) hydrolysis reactions, plate count techniques, and next-generation sequencing (NGS) analysis using prokaryotic universal primers. The FDA hydrolysis reaction and the plate count techniques showed that VB has a higher microbial activity and population density of fungi and bacteria than aVB and CNM. The NGS analysis revealed that the bacterial diversity was higher in VB than in aVB and CNM. In addition, the higher concentrations of NH4+ in VB may be related to the Pythium damping-off suppression. This is the first report on the suppressive effect of VB on the damping-off disease, which is at least partially due to its rich microbial activity and diversity.
刊行年月日
作成者 YOU Xiaodong KIMURA Naohiro OKURA Teppei MURAKAMI Shinpei OKANO Ryoichi SHIMOGAMI Yukihiro MATSUMURA Atsushi TOKUMOTO Hayato OGATA Yoshiyuki TOJO Motoaki
著者キーワード bacterial diversity microbial activity microbial population waste bamboo
公開者 Japan International Research Center for Agricultural Sciences
受付日 2018-03-13
受理日 2018-06-29
53
1
開始ページ 13
終了ページ 19
DOI 10.6090/jarq.53.13
言語 eng

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