scholarly journals Screening and optimization of indole-3-acetic acid production by bacterial strain isolated from rice rhizosphere and its effects on plant growth

2021 ◽  
Vol 19 (3) ◽  
Keyword(s):  
Acetic Acid ◽  
Plant Growth ◽  
Bacterial Strain ◽  
Acid Production ◽  
Acetic Acid Production ◽  
Rice Rhizosphere ◽  
Indole 3 Acetic Acid

Indole-3-acetic acid production via the indole-3-pyruvate pathway by plant growth promoter Rhizobium tropici CIAT 899 is strongly inhibited by ammonium

2017 ◽  
Vol 168 (3) ◽  
pp. 283-292 ◽  
Author(s):  
Eddie Luidy Imada ◽  
Amanda Alves de Paiva Rolla dos Santos ◽  
André Luiz Martinez de Oliveira ◽  
Mariangela Hungria ◽  
Elisete Pains Rodrigues
Keyword(s):  
Acetic Acid ◽  
Plant Growth ◽  
Acid Production ◽  
Growth Promoter ◽  
Rhizobium Tropici ◽  
Acetic Acid Production ◽  
Plant Growth Promoter ◽  
Indole 3 Acetic Acid

scholarly journals Effect of maize root exudates on indole-3-acetic acid production by rice endophytic bacteria under influence of L-tryptophan

F1000Research ◽  
2018 ◽  
Vol 7 ◽  
pp. 112 ◽  
Author(s):  
Arun Karnwal ◽  
Aradhana Dohroo
Keyword(s):  
Acetic Acid ◽  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Acid Production ◽  
Growth Promotion ◽  
Bacterial Species ◽  
Critical Role ◽  
Acetic Acid Production ◽  
Indole 3 Acetic Acid

Background: It is assumed that plant growth regulators produced by beneficial bacterial species could also influence plant growth. IAA is a major plant growth regulator responsible for stimulation of plant growth. There are several microorganisms which are naturally responsible for L- tryptophan metabolism. Methods: In total, 56 indigenous morphologically distinct isolates from rice roots were selected and subsequently characterized with biochemical tests, 16S rRNA sequencing and plant growth promoting activities. Pseudomonas fluorescens RE1 (GenBank: MF102882.1) and RE17 (GenBank: MF103672.1) endophytes resulted in better PGP activity against the other 54 isolates. Both endophytes were tested to screen indole-3-acetic acid production ability in pure culture conditions with L-tryptophan at 0, 50, 100, 200 and 500µg/ml concentrations. Results: P. fluorescens RE1 was recorded efficient for indole production in comparison to P. fluorescens RE17 at various L-tryptophan concentrations. P. fluorescens RE1 was shown to produce between 0.8 µg/ml and 11.5µg/ml of indole at various tryptophan concentrations, while RE17 produced between 1.2µg/ml and 10.2µg/ml. At 200 and 500µg/ml tryptophan concentration, P. fluorescens RE17 produced 7.4pmol/ml and 9.3pmol/ml IAA, respectively.  Conclusions: Inoculation of maize seed with P. fluorescens RE1 and RE17 showed a significantly higher level of IAA production in comparison to non-inoculated seeds. Current study outcomes proved that plant growth regulators produced by Pseudomonas species could also play a critical role in plant growth promotion.

scholarly journals Indole-3-acetic acid production by Streptomyces fradiae NKZ-259 and its formulation to enhance plant growth

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Ei Mon Myo ◽  
Beibei Ge ◽  
Jinjin Ma ◽  
Hailan Cui ◽  
Binghua Liu ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Plant Growth ◽  
Acid Production ◽  
Streptomyces Fradiae ◽  
Acetic Acid Production ◽  
Indole 3 Acetic Acid

Indole-3-Acetic Acid Production from Indole-3-Acetonitrile by Strains of Bradyrhizobium

2002 ◽  
pp. 388-388
Author(s):  
M. Vega-Hernández ◽  
M. León-Barrios ◽  
A. Jarabo-Lorenzo ◽  
R. Pérez-Galdona
Keyword(s):  
Acetic Acid ◽  
Acid Production ◽  
Acetic Acid Production ◽  
Indole 3 Acetic Acid

scholarly journals Biosynthesis of Auxin by the Gram-Positive Phytopathogen Rhodococcus fascians Is Controlled by Compounds Specific to Infected Plant Tissues

2005 ◽  
Vol 71 (3) ◽  
pp. 1169-1177 ◽  
Author(s):  
Olivier Vandeputte ◽  
Sevgi Öden ◽  
Adeline Mol ◽  
Danny Vereecke ◽  
Koen Goethals ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Acid Production ◽  
Infected Plant ◽  
Growth Media ◽  
Acid Biosynthesis ◽  
Gram Positive ◽  
Acetic Acid Production ◽  
Rhodococcus Fascians ◽  
Wide Range ◽  
Indole 3 Acetic Acid

ABSTRACT The role and metabolism of indole-3-acetic acid in gram-negative bacteria is well documented, but little is known about indole-3-acetic acid biosynthesis and regulation in gram-positive bacteria. The phytopathogen Rhodococcus fascians, a gram-positive organism, incites diverse developmental alterations, such as leafy galls, on a wide range of plants. Phenotypic analysis of a leafy gall suggests that auxin may play an important role in the development of the symptoms. We show here for the first time that R. fascians produces and secretes the auxin indole-3-acetic acid. Interestingly, whereas noninfected-tobacco extracts have no effect, indole-3-acetic acid synthesis is highly induced in the presence of infected-tobacco extracts when tryptophan is not limiting. Indole-3-acetic acid production by a plasmid-free strain shows that the biosynthetic genes are located on the bacterial chromosome, although plasmid-encoded genes contribute to the kinetics and regulation of indole-3-acetic acid biosynthesis. The indole-3-acetic acid intermediates present in bacterial cells and secreted into the growth media show that the main biosynthetic route used by R. fascians is the indole-3-pyruvic acid pathway with a possible rate-limiting role for indole-3-ethanol. The relationship between indole-3-acetic acid production and the symptoms induced by R. fascians is discussed.

scholarly journals Screening of Indole-3-Acetic Acid (IAA) Productions by Endophytic Fusarium oxysporum Isolated from Phyllanthus niruri

1970 ◽  
Vol 7 (1) ◽  
pp. 56-59
Author(s):  
Abdul Raffi Junaidi ◽  
Mohamad Hasnul Bolhassan
Keyword(s):  
Acetic Acid ◽  
Fusarium Oxysporum ◽  
Endophytic Fungi ◽  
Acid Production ◽  
Indole Acetic Acid ◽  
Phyllanthus Niruri ◽  
Acetic Acid Production ◽  
Indole Acetic Acid Production ◽  
Indole 3 Acetic Acid

Ten newly isolated endophytic fungi from Phyllathus niruri Linn. were identified as Fusarium oxysporum. These isolates were screened out for their productivity of indole acetic acid (IAA) by the salkowski's method. Out of these isolates, two isolates showed high amount of indole acetic acid production, which were FO9 and FO10 with concentration of 23.52 μg/ml and 5.95 μg/ml, respectively.

scholarly journals Biofilm Formation and Indole-3-Acetic Acid Production by Two Rhizospheric Unicellular Cyanobacteria

2014 ◽  
Vol 24 (8) ◽  
pp. 1015-1025 ◽  
Author(s):  
Mehboob Ahmed ◽  
Lucas J. Stal ◽  
Shahida Hasnain
Keyword(s):  
Acetic Acid ◽  
Biofilm Formation ◽  
Acid Production ◽  
Acetic Acid Production ◽  
Indole 3 Acetic Acid
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