IDENTIFIKASI DAN ANTAGONISME JAMUR ENDOFIT TANAMAN TEBU (Saccharum officinarum L.) DALAM MENGHAMBAT Xanthomonas albilineans L. PENYEBAB PENYAKIT VASKULAR BAKTERI

Abstract

Identification and antagonism test endophytic fungi of sugarcane (Saccharum officinarum L.) to control bacterial vascular (Xanthomonas albilineans). This research aims to find potential endophytic fungi to against X. albilineans on sugarcane with use method autoclaving and membrane filtration sterilization. The research was conducted at Plant Disease Laboratory, Agroecotechnology Program Study, Faculty of Agriculture, University of Sumatera Utara, Medan from April to December 2014. It was done by using Completely Randomized Design (CRD) Factorial with three factor and three replications. The first factor were endophytic fungi 1, endophytic fungi 2. The second factor were dilution 10 -1 , 10 -2 , 10 -3 dan 10 -4 . The three factor sterilization method were autoclaving and membrane filtration. The results showed all the endophytic fungi Aspergillus sp. better use membrane filtration sterilization and Hormiscium sp. better use autoclaving sterilization. Both fungi are potentially as biological agents to control bacterial vascular wilt on sugarcane. The best results obtained on Hormiscium sp.with diameter of inhibiting zone 9,04 mm with use autoclaving sterilization.

Action Mechanism of Marine Endophytic Fungi Aspergillus terreus as Antibacterial Agent Against Vibrio harveyi

“…Marine endophytic fungi represent a recent source of bioactive compounds that can function as antimicrobials, antioxidants, anticancer agents, and participate in biotransformation processes [18]. The selection process was conducted on the 160 samples using selection and purification methods, resulting in 35 isolates that were subsequently subjected to the next stage because another isolates are not endophytic fungi which involved antagonistic testing against Vibrio harveyi bacteria.…”

IDENTIFIKASI JAMUR ENDOFIT YANG BERASOSIASI DENGAN DAUN JERUK LIMAU Citrus x amblycarpa (Hassk.) OCHSE DI KEBUN KALPATARU, DENPASAR, BALI

“…Genus Aspergillus yang ada pada sampel penelitian ini merupakan jamur yang bersifat endofit. Jamur endofit dari genus ini dapat menghasilkan senyawa antibiotik yang bersifat antagonis dan dapat berperan dalam ketahanan tanaman (Wahyuni, 2017). Genus Penicillium memiliki peran sebagai penghasil zat antibiotik yang dikenal dengan nama penisilin.…”

AKTIVITAS ANTIBAKTERI DARI FUNGI ENDOFIT Caulerpa racemosa ASAL PERAIRAN PULAU LEMUKUTAN (ANTIBACTERIAL ACTIVITY FROM ENDOPHYTIC FUNGI Caulerpa racemosa ORIGIN IN LEMUKUTAN ISLAN WATERS)

“…Isolat fungi endofit menghasilkan rata-rata diameter zona hambat yang berbeda-beda. Perbedaan diameter zona hambat dapat disebabkan oleh beberapa faktor diantaranya kemampuan difusi senyawa antibakteri ke dalam media dan interaksinya terhadap bakteri uji, jumlah bakteri yang diujikan, kecepatan tumbuh bakteri uji, ukuran molekul dan stabilitas senyawa antibakteri, kandungan senyawa metabolit sekunder, sifat media yang digunakan, kondisi pada saat inkubasi, jenis bakteri yang dihambat serta tingkat sensitivitas bakteri terhadap senyawa antibakteri [8]; [7]; [19] . Gambar 3.…”