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All Journal JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Ardeva Duta Widura
Department of Agricultural Production, Politeknik Negeri Jember, Jember, East Java, Indonesia 68121
Agriculture, Biological Sciences & Forestry

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Termite symbiont bacteria as biological agents against anthrachnose of bird’s eye chilli caused by Colletotrichum sp. Gallyndra Fatkhu Dinata; Ardeva Duta Widura; Achmad Diva Maulana; Vernanda Hani Pradana Sakti; Zattury Alda Wiya; Risma Azizatur Rofiqoh; Descha Giatri Cahyaningrum; Rifzi Devi Nurvitasari
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 26 No. 2 (2026): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA: JOURNAL OF TROPICAL PLAN
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jhptt.226304-316

Abstract

Symbiotic bacteria associated with termites are a largely unexplored resource with potential for use as biological control agents. This study investigates their effectiveness in managing anthracnose disease caused by Colletotrichum sp. in bird’s eye chili, a disease known to impact crop productivity and yield. Despite its prevalence, farmers often rely on chemical pesticides, which pose environmental risks. The research was carried out over four months at the Plant Protection Laboratory, Bioscience Laboratory, and Innovation Garden of Politeknik Negeri Jember. The experimental procedures included bacterial isolation, preliminary antagonistic screening, hypersensitivity testing, in vitro assays against Colletotrichum sp., in vivo efficacy testing for disease suppression, and molecular identification. Four bacterial isolates—IR1A4, IR1A6, IR1A8, and IR4D3—demonstrated inhibitory effects against the pathogen. In vitro inhibition rates ranged from 22.52% to 80.47%, while in vivo suppression ranged from 7.89% to 18.42%. The IR1A6 isolate, closely related to Bacillus amyloliquefaciens, was the most effective in reducing pathogen growth. These findings highlight the potential of termite-derived bacteria as novel sources of biocontrol agents capable of suppressing fungal pathogens across diverse ecosystems.
Co-Authors Achmad Diva Maulana Descha Giatri Cahyaningrum Gallyndra Fatkhu Dinata Rifzi Devi Nurvitasari Risma Azizatur Rofiqoh Vernanda Hani Pradana Sakti Zattury Alda Wiya