Potensi Rizobakteri Pembentuk Endospora dari Brokoli (Brassica oleracea var. Italica) sebagai Agen Biokontrol Ralstonia solanacearum serta Biofertilizer

نویسندگان

چکیده

Penyakit Layu Bakteri merupakan penyakit tular tanah yang menyerang tanaman hortikultura disebabkan oleh bakteri fitopatogen Ralstonia solanacearum . Komunitas menghuni rizosfer diketahui memiliki potensi baik dalam mendukung pertumbuhan maupun melindungi dari serangan patogen. pembentuk endospora dipilih karena toleransi cukup bagus apabila dihadapkan dengan lingkungan tidak cocok bagi pertumbuhannya. Penelitian ini bertujuan untuk mengisolasi dan mengidentifikasi isolat rizobakteri potensial sebagai agen biokontrol melawan R. brokoli sehat di lahan pertanian organik desa Kopeng Kabupaten Semarang serta mengetahui potensinya biofertilizer. Isolasi menggunakan metode spread plate ; purifikasi streak , karakterisasi uji pewarnaan Gram endospora, antibakteri Kirby-Bauer; identifikasi molekuler gen 16S rRNA; konstruksi pohon filogenetik biofertilizer berupa produksi IAA reagen Salkowski, pelarutan fosfat media Pikovskaya fiksasi nitrogen Nitrogen-free Bromothymol-blue Hasil penelitian diperoleh 18 endospora; RB5 daya hambat kategori sedang (6 mm) teridentifikasi Bacillus subtilis strain FP.PT.1.1-CTCRI nilai similaritas sebesar 98,10% mampu memroduksi melarutkan tetapi memfiksasi secara kualitatif.

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ژورنال

عنوان ژورنال: Bioma: Berkala Ilmiah Biologi

سال: 2023

ISSN: ['2598-2370', '1410-8801']

DOI: https://doi.org/10.14710/bioma.24.2.138-146