scholarly journals Influence of psychrotolerant plant growth-promoting rhizobacteria (PGPR) as coinoculants with Rhizobium on growth parameters and yield of lentil (Lens culinaris Medikus)

2015 ◽  
Vol 9 (4) ◽  
pp. 258-264 ◽  
Author(s):  
Kaur Jaskiran ◽  
Khanna Veena ◽  
Kumari Poonam ◽  
Sharma Rupali
Keyword(s):  
Plant Growth ◽  
Lens Culinaris ◽  
Growth Parameters ◽  
Plant Growth Promoting Rhizobacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting

scholarly journals Differential effects of plant growth promoting rhizobacteria on chilli (Capsicum annuum L.) seedling under cadmium and lead stress

2018 ◽  
Vol 5 (4) ◽  
pp. 182-190 ◽  
Author(s):  
Amit Kumar Pal ◽  
Arpita Chakraborty ◽  
Chandan Sengupta
Keyword(s):  
Heavy Metal ◽  
Plant Growth ◽  
Growth Parameters ◽  
Plant Growth Promoting Rhizobacteria ◽  
Heavy Metal Stress ◽  
Metal Stress ◽  
Growth Enhancement ◽  
Chilli Plant ◽  
Plant Growth Promoting ◽  
Growth Promoting

Rapidly increasing worldwide industrialization has led to many environmental problems by the liberation of pollutants such as heavy metals. Day by day increasing metal contamination in soil and water can be best coped by the interaction of potential plant growth promoting rhizobacteria for plant growth. The effect of plant growth promoting rhizobacteria (PGPR) treatment on growth of chilli plant subjected to heavy metal stress was evaluated. Growth of chilli plant was examined with inoculation of two isolated PGPR (Lysinibacillus varians and Pseudomonas putida) under cadmium (30 ppm), lead (150 ppm) and the combination of heavy metal (Cd+Pb) stress condition. Among these two bacteria L. varians produced slightly better plant growth enhancement. Different growth parameters of chilli plants were reduced under heavy metal stress. Whereas, Cd and Pb tolerant PGPR inoculation, in root associated soil, enhanced plant growth development under test heavy metal contaminated soil. So, these PGPRs may easily be used as bio-fertilizers which will nullify the adverse effect of heavy metal on plant growth.

scholarly journals Plant Growth Promoting Rhizobacteria, Arbuscular Mycorrhizal Fungi and Their Synergistic Interactions to Counteract the Negative Effects of Saline Soil on Agriculture: Key Macromolecules and Mechanisms

2021 ◽  
Vol 9 (7) ◽  
pp. 1491
Author(s):  
Alka Sagar ◽  
Parikshita Rathore ◽  
Pramod W. Ramteke ◽  
Wusirika Ramakrishna ◽  
Munagala S. Reddy ◽  
...  
Keyword(s):  
Plant Growth ◽  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Growth Promotion ◽  
Growth Parameters ◽  
Acc Deaminase ◽  
Arbuscular Mycorrhizal ◽  
Plant Growth Promoting Rhizobacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting

Soil saltiness is a noteworthy issue as it results in loss of profitability and development of agrarian harvests and decline in soil health. Microorganisms associated with plants contribute to their growth promotion and salinity tolerance by employing a multitude of macromolecules and pathways. Plant growth promoting rhizobacteria (PGPR) have an immediate impact on improving profitability based on higher crop yield. Some PGPR produce 1-aminocyclopropane-1-carboxylic (ACC) deaminase (EC 4.1.99.4), which controls ethylene production by diverting ACC into α-ketobutyrate and ammonia. ACC deaminase enhances germination rate and growth parameters of root and shoot in different harvests with and without salt stress. Arbuscular mycorrhizal fungi (AMF) show a symbiotic relationship with plants, which helps in efficient uptake of mineral nutrients and water by the plants and also provide protection to the plants against pathogens and various abiotic stresses. The dual inoculation of PGPR and AMF enhances nutrient uptake and productivity of several crops compared to a single inoculation in both normal and stressed environments. Positively interacting PGPR + AMF combination is an efficient and cost-effective recipe for improving plant tolerance against salinity stress, which can be an extremely useful approach for sustainable agriculture.

scholarly journals Effect of Indigenous Pseudomonas sp. and Bacillus sp. Strains on Yield and Main Chemical Growth Parameters of Radicchio

2018 ◽  
Vol 67 (1) ◽  
pp. 20-26
Author(s):  
Aleksandra Stanojković-Sebić ◽  
Radmila Pivić ◽  
Zoran Dinić ◽  
Renata Iličić ◽  
Dragana Latković ◽  
...  
Keyword(s):  
Plant Growth ◽  
Growth Parameters ◽  
Plant Growth Promoting Rhizobacteria ◽  
Pseudomonas Sp ◽  
Bacillus Sp ◽  
Aerial Parts ◽  
Dry Biomass ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Calcium And Magnesium

Summary Pseudomonas sp. and Bacillus sp. belong to plant growth promoting rhizobacteria which are able to colonize the plants roots and stimulate growth. In this study, the effect of two indigenous plant growth promoting rhizobacterial strains Pseudomonas sp. Q4 and Bacillus sp. Q10 and their mixture (mix Q4+Q10) on content of the main chemical growth parameters (nitrogen, phosphorus, potassium, calcium and magnesium) and the yield of dry biomass of radicchio (Cichorium spp. var. rossa di treviso) aerial parts and root, was investigated. The study was carried out with stagnosol type of soil in pot experiments under semi-controlled conditions in the Institute of Soil Science (Belgrade), in the period from July to October in 2013. Phosphorus was determined by spectrophotometer, potassium - by flame emission photometry and total nitrogen and carbon - using elemental CNS analyzer, while calcium and magnesium were determined by AAS. The data on yield of both aerial parts and root dry biomass of radicchio showed that its treatment with Q4 and Q10 strains, as well as with their mixture, caused noticeably increase in this parameter in relation to the control, whereby the strain Q4 was more effective for aerial parts, while mix Q4+Q10 - for roots. The obtained data on the studied chemical parameters of radicchio root and aerial parts were in total accordance with their yield. Concluding, studied strains have a potential in promoting the biomass yield and main chemical growth parameters of both aerial parts and root of radicchio.

scholarly journals Economic analysis of application of phosphorus, single and dual inoculation of Rhizobium and plant growth promoting rhizobacteria in lentil (Lens culinaris Medikus)

2017 ◽  
Vol 9 (2) ◽  
pp. 1008-1011
Author(s):  
Narinder Singh ◽  
Guriqbal Singh ◽  
Navneet Aggarwal
Keyword(s):  
Plant Growth ◽  
Lens Culinaris ◽  
Field Experiments ◽  
Plant Growth Promoting Rhizobacteria ◽  
Economic Returns ◽  
Net Returns ◽  
Plant Growth Promoting ◽  
Uninoculated Control ◽  
Growth Promoting ◽  
Four Levels

This study investigates the economic returns of lentil (Lens culinaris Medikus) by the use of phosphorus and biofertilizers [Rhizobium and plant growth promoting rhizobacteria (PGPR)] in Indian Punjab. The field experiments were conducted during Rabi 2013-14 and 2014-15 with combinations of four levels of phosphorus (0, 20, 30 and 40 kg P2O5 ha-1) and two/four biofertilizer treatments [uninoculated control and Rhizobium (LLR 12) + PGPR (RB 2)] in 2013-14, and uninoculated control, Rhizobium, PGPR and Rhizobium + PGPR in 2014-15) by replicating thrice. The use of 40 kg P2O5 ha-1 provided the highest gross returns whereas net returns and B:C were highest at 30 kg P2O5 ha-1. The combination of Rhizobium + PGPR + 40 kg P2O5 ha-1 provided the highest gross returns (Rs. 45902) whereas Rhizobium + PGPR+ 20 kg P2O5 ha-1 provided the highest net returns (Rs 20620). Furthermore, the integrated use of Rhizobium + PGPR + 20 kg P2O5 ha-1 provided higher net returns (Rs 20620) and B:C (1.88) as compared to sole application of 40 kg P2O5 ha-1 (Rs 18792 and 1.72). Thus, there was a net saving of 20 kg P2O5 ha-1 with the use of Rhizobium + PGPR inoculation without sacrificing the economics returns.

scholarly journals Influence of Nitrogen Sources and Plant Growth-Promoting Rhizobacteria Inoculation on Growth, Crude Fiber and Nutrient Uptake in Squash (Cucurbita moschata Duchesne ex Poir.) Plants

2016 ◽  
Vol 44 (1) ◽  
pp. 53-59 ◽  
Author(s):  
Alice I. TCHIAZE ◽  
Victor D. TAFFOUO ◽  
Henri FANKEM ◽  
Martin KENNE ◽  
Régis BAZIRAMAKENGA ◽  
...  
Keyword(s):  
Plant Growth ◽  
Nutrient Uptake ◽  
Plant Biomass ◽  
Growth Parameters ◽  
Dry Weight ◽  
Plant Growth Promoting Rhizobacteria ◽  
Crude Fiber ◽  
Cellulose Content ◽  
Plant Growth Promoting ◽  
Growth Promoting

Plant growth promoting rhizobacteria (PGPR, B) have immense potential application in sustainable agriculture as ecofriendly biofertilizers and biopesticides. In this study, the effects of three nitrogen (N) sources (NO3-, NH4+ and NO3NH4) and PGPR on growth, crude fiber and nutrient uptake were investigated in squash plants. Some growth parameters [root dry weight (RDW), shoot dry weight (SDW), total plant dry weight (PDW), number of leaves (NL), shoot length (SL), stem diameter (SD) and number of ramifications (NR)], crude fiber (cellulose content) and nutrient uptake (N, P, K, Ca, Mg, Na, Fe, Cu, Mn and Zn) were determined. Application of NO3-, NH4+ or NO3NH4 singly or in combination with PGPR inoculation led to a significant increase in RDW, SDW, PDW, NL, SL, SD and NR. Na, Cu and Zn contents, on the contrary, decreased in inoculated treated plants while no significant differences were recorded in cellulose contents (CE) of leaves except in plants fed with NO3-. The leaf CE content ranged from 12.58 to 13.67%. The plants supplied with NO3+B, NH4+B and NO3NH4+B showed significantly higher plant biomass and accumulation of N, P, K and Mn concentrations in leaves compared to all other treatments. These results suggest that specific combinations of PGPR with NO3-, NH4+ or NO3NH4 fertilizers can be considered as efficient alternative biofertilizers to improve significantly the squash growth and nutrient uptake.

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