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Jurnal Fitopatologi Indonesia
Article . 2014 . Peer-reviewed
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Jurnal Fitopatologi Indonesia
Article
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Jurnal Fitopatologi Indonesia
Article . 2014
Data sources: DOAJ
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Penapisan dan Identifikasi Bakteri Agens Biokontrol Penyakit Layu Fusarium Hasil Isolasi dari Rizosfer Pisang

Bahasa Indonesia
Authors: Dwi Agustiyani; Achirul Nditasari; Nur Laili; Sarjiya Antonius;

Penapisan dan Identifikasi Bakteri Agens Biokontrol Penyakit Layu Fusarium Hasil Isolasi dari Rizosfer Pisang

Abstract

Banana wilt disease caused by Fusarium oxysporum f.sp.cubense is considered as one of the most destructive diseases on banana plants in the tropical region. Biological control agents (BCA’s) have become a promising solution to overcome this disease. The objective of this study was to find potential BCA’s for wilt disease of banana plants. Bacteria and actinomycetes were isolated from banana’s rhizosphere in Lampung and Cianjur. As much as 64 actinomycetes and 142 bacteria isolates were obtained. Antagonistic test against F. oxysporum f. sp. cubense of those isolates showed that 21 bacteria and 10 actinomycete isolates have abilities to inhibit F. oxysporum f. sp. cubense. Actinomycetes showed relatively higher inhibition against F. oxysporum f. sp. cubense compared to bacteria. Isolates which have positive antagonistic activities against F. oxysporum f. sp. cubense were then tested for their protease, chitinase, and selulase activities qualitatively on specific medium. All actinomycetes which were tested had chitinase enzyme activities, while only 5 bacterial isolates had chitinase activities. On the other hand, 13 bacterial isolates showed protease activities and only 1 actinomycete showed protease activity. Two bacterial isolates (L.II.4.ND and L.A.I-5.DW) and 3 actinomycetes (L.A.I.DW, L.3.1.DW and Ci.I.A5.DW) which showed high inhibition against F. oxysporum f. sp. cubense and lyses enzymes activities were identified based on 16S rRNA genes. Analysis based on GenBank data, those isolates have 99% homology to Klebsiella pneumonia (L.II.4.ND), Burkholderia sp. (L.A.I-5.DW), Streptomyces sp. (L.A.I.DW), Streptomyces sp. (L.3.1.DW) and Streptomyces sp. (Ci.I.A5.DW).

Related Organizations
Keywords

cellulase, QK1-989, Botany, protease, antagonistic, khitinase

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold