New report of endophytic bacterium Achromobacter xylosoxidans from root tissue of Musa spp.

被引:0
|
作者
Chowhan, Papan [1 ]
Swarnakar, Shambhu [1 ]
Chakraborty, Arka Pratim [1 ]
机构
[1] Raiganj Univ, Dept Bot, Raiganj 733134, W Bengal, India
关键词
Achromobacter xylosoxidans; Endophyte; Growth promoting attributes; Antagonist; Curvularia lunata; Leaf spot disease of Cavendish (AAA) banana;
D O I
10.1007/s11033-023-08789-4
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Background Cavendish (AAA) banana plant (Musa spp.) worldwide cultivated crop harbors many endophytic bacteria. Endophytic bacteria are those that live inside plant tissues without producing any visible symptoms of infection.Results Endophytic bacterium (MRH 11), isolated from root tissue of Musa spp.was identified as Achromobacter xylosoxidans (ON955872) which showed positive effects in IAA production, phosphate solubilization, catalase production. A. xylosoxidans also showed in vitro antagonism against Curvularia lunata causing leaf spot disease of Cavendish (AAA) banana (G-9 variety). The GC-MS analysis of culture filtrate of A. xylosoxidans (ON955872) confirmed this finding. GC-MS analysis was carried by using two solvent etheyl acetate and chloroform and it showed several antifungal compounds. The identification of these bioactive secondary metabolites compounds was based on the peak area, retention time, molecular weight, molecular formula and antimicrobial actions. GC-MS analysis result revealed the presence of major components including Cyclododecane, 1-Octanol, Cetene, Diethyl phthalate. In vivo test to banana plants was carried out in separate field as well as in potted conditions. Appearance of leaf spots after foliar spray of spore of pathogen and reduction in leaf spots after application of bacterial suspension was found.Conclusion The present study has highlighted the role of endophytic bacterium as antagonist to the pathogen Curvularia lunata.
引用
收藏
页码:9179 / 9190
页数:12
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