Antibacterial activity of root endophytic aquatic hyphomycetes against plant pathogenic bacteria

Research Articles | Published:

Print ISSN : 0970-4078.
Online ISSN : 2229-4473.
Pub Email:
Doi: 10.1007/s42535-021-00257-3
First Page: 785
Last Page: 789
Views: 546

Keywords: Root endophytes, antibacterial activity, zone of inhibition, bio control


Two root endophytic aquatic hyphomycetes, Campylospora parvula Kuzuha and Tetracladium setigerum (Grove) Ingold were screened for their bioactivity against four plant pathogenic bacteria by preliminary and secondary antibacterial assay. In a preliminary antibacterial assay, C. parvula showed maximum zone of inhibition (ZOI) against X. phaseoli (28 mm), while T. setigerum showed maximum ZOI against Xanthomonas compestris (28 mm) and the minimum ZOI was observed against Agrobacterium tumefaciens by both the test fungi. In a secondary antibacterial assay, the crude extract of C. parvula and T. setigerum showed maximum ZOI against Erwinia chrysanthemi (15 mm) and X. compestris (14 mm) respectively, while the minimum ZOI was observed against X. phaseoli (10 mm) and A. tumefaciens (9 mm) by C. parvula and T. setigerum, respectively. The present findings strongly support the use of root endophytic aquatic hyphomycetes as active antibacterial agents. In future, these strains may be exploited as potent biocontrol agents against the plant pathogenic bacteria.

Root endophytes, antibacterial activity, zone of inhibition, bio control

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The authors are thankful to the Head, Department of Botany, Thakur Dev Singh Bisht Campus, Kumaun University, Nainital for providing necessary lab facilities.

Author Information

Pant Prabha
Department of Botany, D.S.B. Campus, Kumaun University, Nainital, India