Journal of Food, Agriculture and Environment
Vol 12,
Issue 2,2014
Online ISSN: 1459-0263
Print ISSN: 1459-0255
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Diversity of endophytic bacteria in Jujube and their antimicrobial activity against pathogens
Author(s):
Na Cui 1, 2,
Xiao-ling Wang 1, Lian-ying Shen 1*, Yong-min Mao 1Recieved Date: 2014-02-22, Accepted Date: 2014-04-18
Abstract:Endophytic bacteria reside within plant tissues without causing any diseases in those plants. Studies on endophytes in Jujube have focused on the isolation of diazotrophic bacteria. In all, 212 colonies were isolated from internal tissues of Jujube root, branch, and leaf. Of these, 19 isolates were selected for analysing antibiotic activity and isolate identification. Phylogenetic analysis based on 16S rDNA gene sequences showed that the isolates belonged to Bacillus, Pseudomonas, Agrobacterium, Nesterenkonia, Stenotrophomonas, Staphylococcus, Pedobacter, Arthrobacter, Rhizobium, Williamsia, Chryseobacterium, Gamma proteobacterium and Pseudoclavibacter. The dominant genera were Bacillus (35.8%), followed by Staphylococcus (26.42%) and Arthrobacter (17.45%). Antagonistic assays showed that four isolates expressed antibiotic activity against Alternaria alternate, Allantophomoides carotae, Fusarium graminearum, Bipolaris maydis, Alternaria alternate f. sp. mali, Cytospora sp., Botrytis cinerea and Botryosphaeria berengeriana f. sp. pyricola. The current study indicates that selected endophytic bacteria strains have the potential for biological control of plant diseases.
Keywords:Endophytic bacterium,
Jujube, diversity analysis, antimicrobial activityJournal: Journal of Food, Agriculture and Environment
Year: 2014
Volume: 12
Issue: 2
Category: Environment
Pages: 1314-1317
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