Synthetic Plant Growth Regulators. III. The Preparation of Further Tricyclic Helminthosporic Acid Analogues with Gibberellin-like Properties

1979 ◽  
Vol 32 (4) ◽  
pp. 817 ◽  
Author(s):  
AL Cossey ◽  
LN Mander ◽  
SG Pyne
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Cis And Trans

7-Methyl-7,8-dihydro-4a,7-methano-4aH-benzocycloheptene-2,6(9H,5H-dione (6) was prepared and reduced to a 3 : 7 mixture of the trans- and cis-decalin derived ketones (8) and (15). Each compound was further elaborated to the plant-growth-promoting acids (13), (14), (16) and (17). Dienone (5) was also reduced (NaBH4, hydrogenation) to a 7 : 3 mixture of the cis- and trans-decalin derivatives (11) and (9). The stereochemistry of (11), and by inference (12), was determined by correlation with the known ketone (7).

scholarly journals Phenotypic and genotypic characterization of inhabitant PGPR strains of Pseudomonas from apple orchards

2015 ◽  
Vol 7 (2) ◽  
pp. 893-902
Author(s):  
Kumari Manorma ◽  
Shweta Sharma ◽  
Mohinder Kaur
Keyword(s):  
Antifungal Activity ◽  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Siderophore Production ◽  
Pseudomonas Sp ◽  
Genotypic Analysis ◽  
Plant Growth Promoting ◽  
Growth Promoting

Aim of present research was to isolate and characterize the Pseudomonas strains phenotypically and genotypically from the rhizospheric soil of apple orchard at Maggota (Shimla district) Himachal Pradesh. Phenotypic identification of the test isolates was based on morphological, physiological and biochemical characterization of the bacteria followed by genotypic analysis using rRNA gene sequencing and RAPD-PCR analysis. The fourteen Pseudomonas sp. isolates were screened out for various plant growth promoting activities such as siderophore production, antifungal activity, phosphate solubilisation, HCN and ammonia production, production of plant growth regulators and lytic enzymes. Isolates showed production of plant growth regulators (auxins, gibberellins and cytokinins) in the range of 19.67-83.33μg/ml, 21.00-58.67 μg/ml and 12.33-43.33 μg/ml respectively. Pseudomonas strains showed phosphate solubilising activity in the range of 12.33-63.33 Pi μg/ml, 53.66-93.44 % SU siderophore production and 11.33-96.33mm (diameter) protease activity in plate assay. Five Pseudomonas isolates i.e. An-16-kul, An-1-mag, An-2-mag, An-3-mag and An-6-mag showed maximum antifungal activity against plant pathogenic fungi. Therefore, the aim of present investigation was to study multifarious plant growth promoting qualities of Pseudomonas sp. and to select more efficient PGPR strain of fluorescent Pseudomonas sp. which can be further used as biofertilizer.

scholarly journals Application of Plant Growth Promoting Microorganism and Plant Growth Regulators in Agricultural Production and Research

Agronomy ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 524
Author(s):  
Naeem Khan
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Agricultural Production ◽  
Rhizosphere Microorganisms ◽  
Plant Growth Promoting ◽  
Growth Promoting

Plant growth-promoting microorganisms (PGPM) are rhizosphere microorganisms that colonize the root environment [...]

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