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.
(*Only SPR Members can download pdf file; #Open Access;)
Arya P, Sati SC (2012) Evaluation of endophytic hyphomycetes for their antagonistic activity against pathogenic bacteria. Int J Microbiol 2(9):343–347
Eleeyinmi AF (2007) Chemical composition and antibacterial activity of Gongronema latifolium. J Zhejiang Univ 8:352–358
Fisher PJ, Anson AE, Webster J (1988) Quinaphthin, a new antibiotic, produced by Helicoon richonis. Trans Brit Mycol Soc 90:499–502
Gloer JB (1995) The chemistry of fungal antagonism and defense. Can J Bot 73(1):1265–1274
Gulis VI, Stephanovich AI (1999) Antibiotic effects of some aquatic hyphomycetes. Mycol Res 103:111–115
Gulis VI, Suberkropp K (2003) Leaf litter decomposition and microbial activity in nutrient-enriched and unaltered reaches of a headwater stream. Freshw Biol 48:123–134
Harrigan GG, Armentrout BL, Gloer JB, Shearer CA (1995) Anguillosporal, a new antibacterial and antifungal metabolite from the freshwater fungus Anguillospora longissima. J Nat Prod 58:1467–1469
Ingold CT (1942) Aquatic hyphomycetes of decaying alder leaves. Trans Brit Mycol Soc 25:339–417
Malibari AA (1991) Isolation and screening of antibiotics producing Streptomycetes from western region soils of Saudi Arabia. J King Abdulaziz Univ Sci 3:31–42
Platas G, Pelaez F, Collado J, Villuendas G, Diez MT (1998) Screening of antimicrobial activities by aquatic hyphomycetes cultivated on various nutrient sources. Cryptogamie Mycol 19:33–43
Sati SC, Singh L (2014) Bioactivity of root endophytic freshwater hyphomycetes Anguillospora longissima (Sacc. & Syd.) Ingold. Sci World J Article ID 707368:5
Singh L, Sati SC (2014) Bio-prospecting of root endophytic aquatic fungus Cylindrocarpon aquaticum as antibacterial potential. J Pure Appl Microbiol 8:4903–4908
Singh L, Sati SC (2019) Antagonistic activity of isolated root endophytic freshwater fungus Anguillospora longissima against pathogenic fungi. Natl Acad Sci Lett. https://doi.org/10.1007/s40009-019-00818-w
Sridhar KR (2012) Antibacterial activity of freshwater fungus Ingoldiella hamata. Adv Biotech 11:12–15
The authors are thankful to the Head, Department of Botany, Thakur Dev Singh Bisht Campus, Kumaun University, Nainital for providing necessary lab facilities.