Record Details

BIOCHEMICAL AND MOLECULAR CHARACTERIZATION OF SIDEROPHORES PRODUCED BY FLUORESCENT PSEUDOMONAS SPECIES AND THEIR ROLE IN THE REPLANT PROBLEM OF APPLE

KrishiKosh

View Archive Info
 
 
Field Value
 
Title BIOCHEMICAL AND MOLECULAR CHARACTERIZATION OF SIDEROPHORES PRODUCED BY FLUORESCENT PSEUDOMONAS SPECIES AND THEIR ROLE IN THE REPLANT PROBLEM OF APPLE
 
Creator SHARMA, SAPNA
 
Contributor KAUR, MOHINDER
 
Subject bacteria, planting, iron, productivity, biological development, concentrates, sampling, fungi, diseases, apples
apple orchard, fluorescent Pseudomonas
 
Description ABSTRACT
The present study was aimed at the isolation of fluorescent Pseudomonas strains from
normal and replant site of apple orchard. The fluorescent Pseudomonas sp are plant beneficial
rhizobacteria with all the direct and indirect plant growth promoting activities like
siderophores, phosphate solubilization, antifungal and production of HCN; ammonia; plant
growth regulators (auxins, cytokinins and gibberellins) and lytic enzymes. Siderophore is an
important secondary metabolite of fluorescent Pseudomonas as it solubilize the unavailable
form of iron in soil and make it available to plant which is an important micronutrient
required by the plants. Pyoverdin type of siderophore was identified from the Pseudomonas
aeruginosa strain An-1-Rho, An-4-Rho and An-4-U strains with molecular weight 1111.70,
1215 and 727.1 respectively after purification and characterization. Ferric ion biosensor
developed from purified siderophore an easy way to measure iron concentration in different
soil samples and assay is linear, highly specific, robust and accurate as proved by repeated
experimentation. Antifungal activities of Pseudomonas help in suppression of plant
pathogenic fungus in soil and these may be the reasons of better establishment of apple
seedling treated with fluorescent Pseudomonas strain and results in increase in Pseudomonas
count and decreased total rhizobial count. Therefore these strains can be exploited for the
management of replant problem of apple. These selected genotypically and phenotypically
characterized strains of Pseudomonas sp. which were found to be potent and can have great
importance in the field of agriculture, especially in the treatment of apple plants in replant
problem area
 
Date 2016-06-23T14:14:22Z
2016-06-23T14:14:22Z
2012
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/67855
 
Language en
 
Format application/pdf