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Chiang Mai Journal of Science, Faculty of Science, Chiang Mai University
 


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A Rhizobacterium Kitasatospora nipponensis Demonstrates Antifungal Activity against Basal Stem Rot Disease and Promotes Plant Growth in Oil Palm (Elaeis guineensis) Seedlings


Paper Type 
Contributed Paper
Title 
A Rhizobacterium Kitasatospora nipponensis Demonstrates Antifungal Activity against Basal Stem Rot Disease and Promotes Plant Growth in Oil Palm (Elaeis guineensis) Seedlings
Author 
Anurag Sunpapao, Supaporn Pithakkit and Prisana Wonglom
Email 
prisana.w@tsu.ac.th
Abstract:

     Basal stem rot (BSR), caused by Ganoderma boninense, is a severe disease affecting oil palm plantations. The excessive use of synthetic fungicides to control BSR poses risks to human health and the environment. Biological control using the rhizobacterium Kitasatospora nipponensis is considered an environmentally friendly and effective method to address this problem. This study evaluated the biocontrol potential of K. nipponensis KM6-4 against G. boninense and its ability to promote oil palm seedling growth. In vitro, assays demonstrated significant antifungal activity, with 75.44%, 70.00%, and 21.42% inhibition rates in dual culture, volatile antifungal bioassay, and agar well diffusion methods, respectively. K. nipponensis KM6-4 exhibited higher cell wall-degrading enzyme activity in cell-free culture filtrate (CF) compared to the control. Boiled sorghum and organic fertilizer media supported the highest bacterial population (1.2 × 107 CFU/g). In vivo tests showed that K. nipponensis KM6-4 enhanced the growth of oil palm seedlings and reduced BSR severity, achieving a disease reduction of 47.06%. These findings highlight K. nipponensis KM6-4 as an effective and eco-friendly agent for managing BSR and promoting oil palm growth.

Graphical Abstract:
Article ID
e2025033
Received Date 
2024-10-22
Revised Date 
2025-03-09
Accepted Date 
2025-04-06
Published Date 
2025-05-22
Full Text 
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Keyword 
basal stem rot, biological control, disease severity, oil palm
Volume 
Vol.52 No.3 (May 2025)
DOI 
https://doi.org/10.12982/CMJS.2025.033
Citation 
Sunpapao A., Pithakkit S. and Wonglom P., A rhizobacterium Kitasatospora nipponensis demonstrates antifungal activity against basal stem rot disease and promotes plant growth in oil palm (Elaeis guineensis) seedlings. Chiang Mai Journal of Science, 2025; 52(3): e2025033. DOI 10.12982/CMJS.2025.033.

 

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