Abstract
Wheat (Triticum aestivum) is a major cereal crop grown worldwide. Most of the world population depends on wheat for their nutrient requirement. Zinc (Zn) is one of the most crucial elements required for the development of wheat plant. It is one of the micronutrients required in many biochemical cycles. It has been found that the concentration of Zn is below the required level in the soil and hence it remains deficient in the crops. To ameliorate the deficit, chemical fertilizers are added in the soil, where as biofertilizers are preferred over chemicals in sustainable agriculture. The paper describes the isolation, screening and molecular characterization of the zinc solubilizing bacteria (ZSB) to improve plant growth. A total of 100 soil samples were collected from the rhizospheric soil of wheat plants. ZSB were isolated by dilution plating on Bunt and Rovira media. The 50 isolates were selected and screened for their Zn solubilization. The zinc tolerance of all the isolates varied from 0.5% to 2% of insoluble Zn. Based on the Zn tolerance ability, 15 bacterial isolates were screened for Phosphate solubilization and further analyzed for the synthesis of IAA, NH3, siderophore production and chitinase activity. The three isolates were selected on the basis of the plant growth promoting characteristics for molecular characterization and were found to be homologous to Bacillus cereus, Pseudomonas aeruginosa and Bacillus tropicus. This study documented the establishment and survival of ZSB in the wheat rhizosphere and enhanced plant productivity, thus indicating the potential of isolates as commercial biofertilizers.
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Claims 4
Claim · model-written summary
The bacterial isolates tolerated 0.5% to 2% insoluble zinc.
- Taxon
- Wheat
Triticum aestivumt0 - Outcome
- zinc tolerance of all the isolatese0
- Value
- 0.5% to 2% of insoluble Zne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The zinc tolerance of all the isolates varied from 0.5% to 2% of insoluble Zn.”
t0“Wheat (Triticum aestivum)”
Claim · model-written summary
Three selected isolates were homologous to Bacillus cereus, Pseudomonas aeruginosa and Bacillus tropicus.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- homologous to Bacillus cereus, Pseudomonas aeruginosa and Bacillus tropicuse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The three isolates were selected on the basis of the plant growth promoting characteristics for molecular characterization and were found to be homologous to Bacillus cereus, Pseudomonas aeruginosa and Bacillus tropicus.”
t0“Wheat (Triticum aestivum)”
Claim · model-written summary
Zinc-solubilizing bacteria established and survived in the wheat rhizosphere.
- Taxon
- wheatTriticum aestivume0
- Outcome
- establishment and survival of ZSB in the wheat rhizospheree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study documented the establishment and survival of ZSB in the wheat rhizosphere and enhanced plant productivity”
Claim · model-written summary
Zinc-solubilizing bacteria enhanced plant productivity.
- Taxon
- wheatTriticum aestivume0
- Treatment
- ZSBe0
- Outcome
- plant productivitye0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study documented the establishment and survival of ZSB in the wheat rhizosphere and enhanced plant productivity”
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zinc atom · yield · Triticum aestivum (wheat)Results differ
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- no effect
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See all 511 papers →inoculation · yield · Triticum aestivum (wheat)Positive and negative results
548 papers in the same direction as this paper · 60 in the opposite direction · 5 reporting no difference from an alternative
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See all 614 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.