scholarly journals Plant Growth Promotion and Induction of Systemic Tolerance to Drought and Salt Stress of Plants by Quorum Sensing Auto-Inducers of the N-acyl-homoserine Lactone Type: Recent Developments

2021 ◽  
Vol 12 ◽  
Author(s):  
Anton Hartmann ◽  
Sophia Klink ◽  
Michael Rothballer
Keyword(s):  
Salt Stress ◽  
Quorum Sensing ◽  
Plant Growth ◽  
Plant Growth Promotion ◽  
Growth Promotion ◽  
Homoserine Lactone ◽  
Acyl Homoserine Lactone ◽  
Drought And Salt Stress ◽  
Recent Developments

Ochrobactrum sp. Pv2Z2 exhibits multiple traits of plant growth promotion, biodegradation and N-acyl-homoserine-lactone quorum sensing

2014 ◽  
Vol 64 (4) ◽  
pp. 1797-1806 ◽  
Author(s):  
Asma Imran ◽  
Marryam Jumma Abdulla Saadalla ◽  
Sami-Ullah Khan ◽  
Muhammad Sajjad Mirza ◽  
Kauser Abdulla Malik ◽  
...  
Keyword(s):  
Quorum Sensing ◽  
Plant Growth ◽  
Plant Growth Promotion ◽  
Growth Promotion ◽  
Homoserine Lactone ◽  
Acyl Homoserine Lactone ◽  
Multiple Traits

Potential for plant growth promotion of Kocuria arsenatis Strain ST19 on tomato under salt stress conditions

2021 ◽  
Vol 138 ◽  
pp. 94-104
Author(s):  
Guendouz Dif ◽  
Hadj Ahmed Belaouni ◽  
Yacine Goudjal ◽  
Amine Yekkour ◽  
Nadjette Djemouai ◽  
...  
Keyword(s):  
Salt Stress ◽  
Plant Growth ◽  
Plant Growth Promotion ◽  
Growth Promotion ◽  
Stress Conditions

scholarly journals Quorum Sensing System Affects the Plant Growth Promotion Traits of Serratia fonticola GS2

2020 ◽  
Vol 11 ◽  
Author(s):  
Byung Kwon Jung ◽  
Jerald Conrad Ibal ◽  
Huy Quang Pham ◽  
Min-Chul Kim ◽  
Gun-Seok Park ◽  
...  
Keyword(s):  
Quorum Sensing ◽  
Plant Growth ◽  
Plant Growth Promotion ◽  
Biofilm Formation ◽  
Growth Promotion ◽  
Acc Deaminase ◽  
Deletion Mutants ◽  
Phenotypic Data ◽  
Collective Behaviors ◽  
Pgp Activities

Quorum sensing (QS) enables bacteria to organize gene expression programs, thereby coordinating collective behaviors. It involves the production, release, and population-wide detection of extracellular signaling molecules. The cellular processes regulated by QS in bacteria are diverse and may be used in mutualistic coordination or in response to changing environmental conditions. Here, we focused on the influence of the QS-dependent genes of our model bacterial strain Serratia fonticola GS2 on potential plant growth promoting (PGP) activities including indole-3-acetic acid (IAA) production, 1-aminocyclopropane-1-carboxylate (ACC) deaminase activity, and biofilm formation. Based on genomic and phenotypic experimental data we identified and investigated the function of QS genes in the genome of the model strain. Our gene deletion study confirmed the biological functionality of the QS auto-inducer (gloI) and receptor (gloR) on potential PGP activities of GS2. A transcriptomic approach was also undertaken to understand the role of QS genes in regulation of genes primarily involved in PGP activities (IAA, ACC deaminase activity, and biofilm formation). Both transcriptomic and phenotypic data revealed that the QS-deletion mutants had considerably less PGP activities, as compared to the wild type. In addition, in vivo plant experiments showed that plants treated with GS2 had significantly higher growth rates than plants treated with the QS-deletion mutants. Overall, our results showed how QS-dependent genes regulate the potential PGP activities of GS2. This information may be helpful in understanding the relationship between QS-dependent genes and the PGP activity of bacteria, which aid in the production of practical bio-fertilizers for plant growth promotion.

scholarly journals Salt Tolerant Rhizobacteria from Coastal Region of Bangladesh Portrayed the Potential for Plant Growth Promotion

2021 ◽  
pp. 58-70
Author(s):  
Md. Shoaib Arifin ◽  
Md. Shafiul Islam Rion ◽  
Atiqur Rahman ◽  
H. M. Zakir ◽  
Quazi Forhad Quadir
Keyword(s):  
Salt Stress ◽  
Plant Growth ◽  
Plant Growth Promotion ◽  
Growth Promotion ◽  
Research Work ◽  
Salt Tolerant ◽  
Salt Stress Condition ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Phosphate Solubilizing

Plant growth-promoting rhizobacteria can effectively reduce the severity of different abiotic stresses like water stress, temperature stress, salt stress, etc. on plant growth and development. The study aimed at isolating salt-tolerant rhizobacteria followed by their morphological, biochemical and plant growth promotion traits evaluation. Sixteen root samples of nine different plant species were collected from two locations of Patuakhali, a coastal southern district of Bangladesh. Thirty rhizobacteria were isolated, fifteen from each location, to assess their halotolerance and plant growth promoting potential. The isolated rhizobacteria were subjected to morphological (viz. shape, colour and elevation), biochemical (viz. Gram reaction, catalase test and HCN production) and growth-promoting traits [viz. phosphate solubilizing ability, salt tolerance, indole-3-acetic acid (IAA) production, and N2-fixation] characterization. Twenty-eight isolates were Gram positive, 27 were catalase positive, and nine showed varying degrees of phosphate solubilization on National Botanical Research Institute of Phosphate (NBRIP) medium. Isolate PWB5 showed the highest phosphate solubilizing index (PSI = 3.83±0.098) on the 6th day. To screen salt-tolerant rhizobacteria, the isolates were cultured in NBA media containing different (0%, 2.5%, 5%, 7.5%, 10%, 12%, 15%) NaCl concentrations. Isolate PWB12 and PWB13 grew at 15% NaCl concentration. Eleven isolates exhibited IAA producing ability on Winogradsky medium amended with L-tryptophan among which four (PMB13, PMB14, PMB15 and PWB6) were strong IAA producers. Twenty-seven isolates were potential N2-fixer and among them, 20 were highly efficient, but none of the isolates was HCN producer. The rhizobacteria isolated in the current research work showed some potential plant growth-promoting traits which seem applicable for crop production, especially, under salt stress condition.

scholarly journals Paradox of plant growth promotion potential of rhizobacteria and their actual promotion effect on growth of barley (Hordeum vulgare L.) under salt stress

2015 ◽  
Vol 181 ◽  
pp. 22-32 ◽  
Author(s):  
Massimiliano Cardinale ◽  
Stefan Ratering ◽  
Christian Suarez ◽  
Ana Maria Zapata Montoya ◽  
Rita Geissler-Plaum ◽  
...  
Keyword(s):  
Salt Stress ◽  
Hordeum Vulgare ◽  
Plant Growth ◽  
Plant Growth Promotion ◽  
Growth Promotion ◽  
Hordeum Vulgare L ◽  
Promotion Effect ◽  
Effect On Growth
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