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Title: Screening of Antibacterial Activity of Goniothalamus calvicarpa Extracts against Xanthomonas axonopodis pv. citri in vitro
Authors: Juangjun Jumpathong
Nungruthai Suphrom
Bernard Dell
Khammool Khamsuk
Thanita Boonsrangsom
Thanatsan Poonpaiboonpipat
Keywords: Antibacterial activity
Plant extract
Citrus canker
Issue Date: 2020
Publisher: Chiang Mai University
Citation: Chiang Mai University (CMU) Journal of Natural Sciences 19,2 (Apr-Jun 2020), p.252-264
Abstract: Citrus canker caused by Xanthomonas axonopodis pv. citri (Xac) is a serious disease in many parts of the world and is difficult to control. The use of copper-based pesticides is becoming a concern due to the accumulation of heavy metals in orchard soils and more benign treatment methods are needed. Eighteen Thai native plant extracts were screened for antibacterial activity against a Thai isolate of Xac and it was found that ethanolic extracts of Goniothalamus calvicarpa leaves showed the strongest antibacterial activity against Xac in vitro. The G. calvicarpa extracts were then sequentially dissolved with hexane, ethyl acetate and methanol and retested. A 70% aqueous ethanol extract and a methanol soluble extract produced strong inhibition zones against Xac. Although thin layer chromatographic profiles revealed the likely presence of flavonoids in the biologically active extracts of G. calvicarpa, the active compounds have yet to be identified. Work is proceeding to determine whether specific extracts of G. calvicarpa have biological activity against citrus canker in the field.
Description: Chiang Mai University (CMU) Journal of Natural Sciences is dedicated to the publication of original research in Sciences & Technology and the Health Sciences. Submissions are welcomed from CMU, as well as other Thai and foreign institutions. All submissions must be original research not previously published or simultaneously submitted for publication. Manuscripts are peer reviewed using the double -blinded review system by at least 2 reviewers before acceptance. The CMU Journal of Natural Sciences is published four times a year, in January, April, July and October.
ISSN: 2465-4337
Appears in Collections:CMUL: Journal Articles

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