Plant growth promotion induced by phosphate solubilizing endophytic Pseudomonas isolates
Nicholas Oteino,Richard D. Lally,Samuel Kiwanuka,Andrew T. Lloyd,David Ryan,Kieran J. Germaine,David N. Dowling +6 more
TLDR
The results showed that many of the endophytic strains produced GA and have moderate to high phosphate solubilization capacities, and when inoculated into P. sativum L. plants grown in soil under soluble phosphate limiting conditions, theendophytes that produced medium-high levels of GA displayed beneficial plant growth promotion effects.Abstract:
The use of plant growth promoting bacterial inoculants as live microbial biofertilisers provides a promising alternative to chemical fertilisers and pesticides. Inorganic phosphate solubilisation is one of the major mechanisms of plant growth promotion by plant associated bacteria. This involves bacteria releasing organic acids into the soil which solubilise the phosphate complexes converting them into ortho-phosphate which is available for plant up-take and utilisation. The study presented here describes the ability of endophytic bacterial isolates to produce gluconic acid, solubilise insoluble phosphate and stimulate the growth of Pea plants (Pisum sativum). This study also describes the genetic systems within three of these endophyte isolates thought to be responsible for their effective phosphate solubilising abilities. The results showed that many of the endophytic isolates produced gluconic acid (14-169 mM) and have moderate to high phosphate solubilisation capacities (~ 400-1300 mg L-1). When inoculated to Pea plants grown in sand/soil under soluble phosphate limiting conditions, the endophyte isolates that produced medium to high levels of gluconic acid also displayed enhanced plant growth promotion effects.read more
Citations
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Revitalization of plant growth promoting rhizobacteria for sustainable development in agriculture.
Sushanto Gouda,Rout George Kerry,Gitishree Das,Spiros Paramithiotis,Han-Seung Shin,Jayanta Kumar Patra +5 more
TL;DR: Plant growth promoting rhizobacteria (PGPR) has been functioning as a co-evolution between plants and microbes showing antagonistic and synergistic interactions with microorganisms and the soil.
Journal ArticleDOI
Bacterial Endophyte Colonization and Distribution within Plants
TL;DR: This review summarizes currently available knowledge about endophytic colonization by bacteria in various plant species, and specifically discusses the colonization of maize plants by Populus endophytes.
Journal ArticleDOI
Induction of abiotic stress tolerance in plants by endophytic microbes.
TL;DR: The molecular mechanisms for increasing stress tolerance in plants by endophytes include induction of plant stress genes as well as biomolecules like reactive oxygen species scavengers which may help in the development of biotechnological applications of endophytic microbes in plant growth promotion and crop improvement under abiotic stress conditions.
Journal ArticleDOI
Beneficial features of plant growth-promoting rhizobacteria for improving plant growth and health in challenging conditions: A methodical review.
TL;DR: The potential of PGPR to facilitate plant growth is of fundamental importance, especially in case of abiotic stress, where bacteria can support plant fitness, stress tolerance, and/or even assist in remediation of pollutants.
Journal ArticleDOI
Plant growth-promoting activities for bacterial and fungal endophytes isolated from medicinal plant of Teucrium polium L.
TL;DR: In this article, the authors identify bacterial and fungal endophytes of Teucrium polium and characterize plant growth-promoting (PGP) properties of these Endophytes.
References
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TL;DR: The Molecular Evolutionary Genetics Analysis (MEGA) software as discussed by the authors provides facilities for building sequence alignments, inferring phylogenetic histories, and conducting molecular evolutionary analysis, including the inference of timetrees.
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