Whole genome analysis of Gluconacetobacter azotocaptans DS1 and its beneficial effects on plant growth

被引:1
|
作者
Mukhtar, Salma [1 ]
Farooq, Muhammad [2 ]
Baig, Deeba Noreen [1 ]
Amin, Imran [2 ]
Lazarovits, George [3 ]
Malik, Kauser Abdulla [1 ]
Yuan, Ze-Chun [4 ]
Mehnaz, Samina [1 ]
机构
[1] A Chartered Univ, KAM Sch Life Sci, Forman Christian Coll, Lahore, Pakistan
[2] Natl Inst Biotechnol & Genet Engn NIBGE, Div Agr Biotechnol, Jhang Rd, Faisalabad, Pakistan
[3] Agroecol Res Serv Ctr, A&L Biol, London, ON N5V 3P5, Canada
[4] Agr & Agri Food Canada, London, ON, Canada
关键词
Plant growth-promoting rhizobacteria; Gluconacetobacter azotocaptans; Genome analysis; Nitrogen fixation; PHOSPHATE-SOLUBILIZING BIOFERTILIZERS; INSENSITIVE QUINOL OXIDASE; GLUCONOBACTER-OXYDANS; PSEUDOMONAS-PUTIDA; DIAZOTROPHICUS; RHIZOBACTERIA; PREDICTION; PGPR; NOV;
D O I
10.1007/s13205-021-02996-1
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Plant-associated bacteria play an important role in the enhancement of plant growth and productivity. Gluconacetobacter azotocaptans is an exceptional bacterium considering that till today it has been isolated and reported only from Mexico and Canada. It is a plant growth-promoting bacterium and can be used as biofertilizer for different crops and vegetables. The objective of the current study was to evaluate the inoculation effect of Gluconacetobacter azotocaptans DS1, Pseudomonas putida CQ179, Azosprillium zeae N7, Azosprillium brasilense N8, and Azosprillium canadense DS2, on the growth of vegetables including cucumber, sweet pepper, radish, and tomato. All strains increased the vegetables' growth; however, G. azotocaptans DS1 showed better results as compared to other inoculated and control plants and significantly increased the plant biomass of all vegetables. Therefore, the whole genome sequence of G. azotocaptans DS1 was analyzed to predict genes involved in plant growth promotion, secondary metabolism, antibiotics resistance, and bioremediation of heavy metals. Results of genome analysis revealed that G. azotocaptans DS1 has a circular chromosome with a size of 4.3 Mbp and total 3898 protein-coding sequences. Based on functional analysis, genes for nitrogen fixation, phosphate solubilization, indole acetic acid, phenazine, siderophore production, antibiotic resistance, and bioremediation of heavy metals including copper, zinc, cobalt, and cadmium were identified. Collectively, our findings indicated that G. azotocaptans DS1 can be used as a biofertilizer and biocontrol agent for growth enhancement of different crops and vegetables.
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页数:12
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