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Journal : Jurnal Biosense

ISOLASI RIZOSFER TANAMAN NILAM SEBAGAI AGEN HAYATI TERHADAP Fusarium sp. SECARA IN VITRO Nisa, Audria Chairun; Ade, Filza Yulina; Lutfia, Anisa
JURNAL BIOSENSE Vol 9 No 1 (2026): Edisi Januari 2026
Publisher : Program Studi Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas PGRI Banyuwangi, Jalan Ikan Tongkol No 01, Telp (0333) 421593, 428592 Banyuwangi 68416

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/biosense.v9i1.7223

Abstract

This study aimed to isolate Pseudomonas spp. bacteria from the rhizosphere of patchouli plants (Pogostemon cablin Benth.) at three different location, namely Aceh, Purwokerto, and Pasaman, to test their antagonistic ability in suppressing the growth of Fusarium sp., the fungal pathogen causing root rot in patcouli. Isolation using Pseudomonas Isolation Agar (PIA) medium yielded 40 rhizosphere bacterial isolates, consisting of 14 from Aceh, 16 from Purwokerto, and 10 From Pasaman. Macroscopic morphological identification revealed variations in colony characteristics such as cream/clear color, entire/undulate margins, convex elevation, and viscous/butyrous texture. In vitro antagonism tests via dual culture method on PDA medium were observe twice after 7 and 14 days of incubation, showing strong percentage inhibition of radial growth (PIRG >40%) on day 7 (PW1(2): 42,86%, PW1(3): 65,71%, PW2(3): 57,14%, PW3(1): 54,29%, PW5(2): 48,57% and on day 14 (A1(2): 65%, A2(2): 42,5%, A3(1): 47,5%, PW1(3): 50%, PW2(1): 60%, PW2(3): 55%, PW2(4): 52,5%, PW3(1): 62,5%, PW4(2): 42,5%, PW5(2): 52,5%).