The antimicrobial activity of King of Bitters, Andrographis paniculata (Burm f.) wall. ex Nees.
Date
12-2011
Degree
Bachelor of Science in Agriculture
Major Course
Major in Plant Pathology
College
College of Arts and Sciences (CAS)
Adviser/Committee Chair
Orajay, Joey I.
Abstract
Aqueous extract of Andrographis paniculata, an herbaceous plant used in traditional Chinese, Thai and Indian medicine, was investigated for its antimicrobial activity against 15 plant pathogenic fungi (Bipolaris maydis, Colletotrichum gloeosporioides, Alternaria alternata, Curvularia inequalis, Aspergillus oryzae, A. niger, A. flavus, Fusarium oxysporum, Rhizoctonia solani, Rhizopus stolonifer, Sclerotium rolfsii, Lasiodiplodia theobromae, Thielaviopsis sp., Penicillium sp., and Phomopsis vexan) and three plant pathogenic bacteria (Xanthomonas oryzae pv. oryzae, Pectobacterium carotovorum and Ralstonia solanacearum). Results showed that the aqueous extract did not inhibit growth of any of the pathogens tested on agar media as no zone of inhibition was observed. However, significant reduction in spore germination of three fungal pathogens (B. maydis, C. gloeosporioides and C. inequalis) was observed when treated with the plant extract for 4 days. Based on these results, it can be concluded that the crude extract of A. paniculata may inhibit spore germination of certain plant pathogens, and therefore, warrants further investigation.
Language
English
Location
UPLB Main Library Special Collections Section
Call Number
Thesis
Recommended Citation
Veloso, Romeo C., "The antimicrobial activity of King of Bitters, Andrographis paniculata (Burm f.) wall. ex Nees." (2011). Undergraduate Theses. 563.
https://www.ukdr.uplb.edu.ph/etd-undergrad/563
Document Type
Thesis