Effect of Wild-Type and Mutant Plant Growth-Promoting Rhizobacteria on the Rooting of Mung Bean Cuttings

1999 ◽  
Vol 18 (2) ◽  
pp. 49-53 ◽  
Author(s):  
S. Mayak ◽  
T. Tirosh ◽  
B. R. Glick
Keyword(s):  
Plant Growth ◽  
Mung Bean ◽  
Plant Growth Promoting Rhizobacteria ◽  
Wild Type ◽  
Mutant Plant ◽  
Plant Growth Promoting ◽  
Growth Promoting

Evaluation of plant growth promoting rhizobacteria (PGPR) for the control of charcoal rot of Mung bean

2021 ◽  
Vol 54 (1) ◽  
Author(s):  
Amjid Khan ◽  
Shehzad Asad ◽  
Asghari Bano ◽  
Rashid Abbas Khan ◽  
Tauqeer Ahmed Qadri
Keyword(s):  
Plant Growth ◽  
Mung Bean ◽  
Plant Growth Promoting Rhizobacteria ◽  
Charcoal Rot ◽  
Plant Growth Promoting ◽  
Growth Promoting

Inducing salt tolerance in mung bean through coinoculation with rhizobia and plant-growth-promoting rhizobacteria containing 1-aminocyclopropane-1-carboxylate deaminase

2011 ◽  
Vol 57 (7) ◽  
pp. 578-589 ◽  
Author(s):  
Maqshoof Ahmad ◽  
Zahir A. Zahir ◽  
H. Naeem Asghar ◽  
M. Asghar
Keyword(s):  
Salt Tolerance ◽  
Plant Growth ◽  
Pseudomonas Fluorescens ◽  
Mung Bean ◽  
Acc Deaminase ◽  
Plant Growth Promoting Rhizobacteria ◽  
Saline Stress ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Axenic Conditions

Twenty-five strains of plant-growth-promoting rhizobacteria (PGPR) containing 1-aminocyclopropane-1-carboxylate (ACC) deaminase and 10 strains of rhizobia were isolated from rhizosphere soil samples and nodules of mung bean. They were screened in separate trials under salt-stressed axenic conditions. The three most effective strains of PGPR (Mk1, Pseudomonas syringae ; Mk20, Pseudomonas fluorescens ; and Mk25, Pseudomonas fluorescens biotype G) and Rhizobium phaseoli strains M1, M6, and M9 were evaluated in coinoculation for their growth-promoting activity at three salinity levels (original, 4 dS·m–1, and 6 dS·m–1) under axenic conditions. The results showed that salinity stress significantly reduced plant growth but inoculation with PGPR containing ACC deaminase and rhizobia enhanced plant growth, thus reducing the inhibitory effect of salinity. However, their combined application was more effective under saline conditions, and the combination Mk20 × M6 was the most efficient for improving seedling growth and nodulation. The effect of high ethylene concentrations on plant growth and the performance of these strains for reducing the negative impact of saline stress was also evaluated by conducting a classical triple-response bioassay. The intensity of the classical triple response decreased owing to inoculation with these strains, with the root and shoot lengths of inoculated mung bean seedlings increasing and stem diameter decreasing, which is a typical response to the dilution in a classical triple response bioassay. Thus, coinoculation with PGPR containing ACC deaminase and Rhizobium spp. could be a useful approach for inducing salt tolerance and thus improving growth and nodulation in mung bean under salt-affected conditions.

1-Aminocyclopropane-1-carboxylic acid deaminase mutants of the plant growth promoting rhizobacterium Pseudomonas putida GR12-2 do not stimulate canola root elongation

1994 ◽  
Vol 40 (11) ◽  
pp. 911-915 ◽  
Author(s):  
Bernard R. Glick ◽  
Christian B. Jacobson ◽  
Melinda M. K. Schwarze ◽  
J. J. Pasternak
Keyword(s):  
Carboxylic Acid ◽  
Plant Growth ◽  
Pseudomonas Putida ◽  
Root Elongation ◽  
Acc Deaminase ◽  
Plant Growth Promoting Rhizobacteria ◽  
Wild Type ◽  
Ethylene Concentration ◽  
Plant Growth Promoting ◽  
Growth Promoting

The plant growth promoting rhizobacterium Pseudomonas putida GR12-2 was mutagenized with nitrosoguanidine and three separate mutants that were unable to utilize 1-aminocyclopropane-1-carboxylic acid (ACC) as a sole nitrogen source were selected. These mutants are devoid of the ACC deaminase activity that is present in wild-type P. putida GR12-2 cells. Only wild-type cells, but not any of the ACC deaminase mutants, promoted root elongation of developing canola seedlings under gnotobiotic conditions. These results are interpreted in terms of a model in which P. putida GR12-2 promotes root elongation by binding to germinating seeds and sequesters and hydrolyzes some of the unbound ACC, thereby lowering the level of ACC and hence the endogenous ethylene concentration, allowing the roots to grow longer.Key words: 1-aminocyclopropane-1-carboxylate, ACC, plant growth promoting rhizobacteria, PGPR, ACC deaminase, bacterial fertilizer.

scholarly journals Plant Growth Promoting Rhizobacteria and Silicon Synergistically Enhance Salinity Tolerance of Mung Bean

2016 ◽  
Vol 7 ◽  
Author(s):  
Sajid Mahmood ◽  
Ihsanullah Daur ◽  
Samir G. Al-Solaimani ◽  
Shakeel Ahmad ◽  
Mohamed H. Madkour ◽  
...  
Keyword(s):  
Plant Growth ◽  
Salinity Tolerance ◽  
Mung Bean ◽  
Plant Growth Promoting Rhizobacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting

Plant growth promoting rhizobacteria and their biopriming for growth promotion in mung bean (Vigna radiata (L.) R. Wilczek)

2018 ◽  
Vol 16 ◽  
pp. 163-171 ◽  
Author(s):  
Punam Kumari ◽  
Mukesh Meena ◽  
Pooja Gupta ◽  
Manish Kumar Dubey ◽  
Gopal Nath ◽  
...  
Keyword(s):  
Plant Growth ◽  
Vigna Radiata ◽  
Mung Bean ◽  
Growth Promotion ◽  
Plant Growth Promoting Rhizobacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting

Persistence in soil of the plant growth promoting rhizobacterium Pseudomonas putida GR12-2 and genetically manipulated derived strains

1995 ◽  
Vol 41 (6) ◽  
pp. 445-451 ◽  
Author(s):  
Weizhen Tang ◽  
J. J. Pasternak ◽  
Bernard R. Glick
Keyword(s):  
Plant Growth ◽  
Pseudomonas Putida ◽  
Soil Bacteria ◽  
Plant Growth Promoting Rhizobacteria ◽  
Broad Host Range ◽  
Wild Type ◽  
Soil Persistence ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Genetically Manipulated

Transformation of the plant growth promoting rhizobacterium Pseudomonas putida GR12-2 with broad-host-range vectors can affect the growth of the bacterium, its ability to promote root elongation of canola seedlings under gnotobiotic conditions, and its persistence in soil. Plasmid transformants, and a transposon-mutagenized derivative of P. putida GR12-2, fell into two classes with respect to these three attributes: strains that were clearly diminished in these capabilities and strains that behaved like the nontransformed wild type. These differences can be accounted for by the imposition of a metabolic load that is created by some types of genetic modification that results in a physiological impairment of the modified bacterium and decreases its ability to function as a plant growth promoting rhizobacterium.Key words: plant growth promoting rhizobacteria, PGPR, bacterial fertilizer, soil bacteria, soil persistence, microcosm.

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