scholarly journals Mechanism of Plant Growth Stimulation by Naphthenic Acid

1973 ◽  
Vol 52 (2) ◽  
pp. 162-165 ◽  
Author(s):  
D. J. Wort ◽  
J. G. Severson ◽  
David R. Peirson
Keyword(s):  
Plant Growth ◽  
Naphthenic Acid ◽  
Growth Stimulation ◽  
Plant Growth Stimulation

Azospirillum–Rhizobium interaction leading to a plant growth stimulation without nodule formation

1985 ◽  
Vol 31 (11) ◽  
pp. 1026-1030 ◽  
Author(s):  
Jacek Plazinski ◽  
Barry G. Rolfe
Keyword(s):  
Plant Growth ◽  
White Clover ◽  
Nitrogen Deficiency ◽  
Growth Stimulation ◽  
Selective Medium ◽  
Acetylene Reduction Activity ◽  
Nodule Formation ◽  
Bacterial Cells ◽  
Indigenous Plasmid ◽  
Plant Growth Stimulation

The effect of inoculation of white clover plants with mixed cultures of Rhizobium trifolii strain ANU870 and Azospirillum brasilense strain SP245 was examined. Ratios of Rhizobium–Azospirillum (R:A) of 1:200 to 1:2500 caused an inhibition of nodulation. However, these nonnodulated plants did not show nitrogen-deficiency symptoms when grown on nitrogenfree medium. When these plants were assayed for acetylene reduction activity a low level of ethylene production was detected. A significant increase in plant dry weights was also observed. Isolation of viable bacterial cells from surface-sterilized root segments of plants inoculated with an R:A ratio of 1:200 revealed that 80% of the bacterial population was made up of the Azospirillum strain. Under laboratory conditions transfer of the Rhizobium Sym(biosis) plasmid pBRIAN to strain SP245 was observed ex planta. However, the Sym plasmid was unstable in Azospirillum. A high frequency of Tn5 transfer from pBRIAN to strain SP245 occurred when strains ANU870 and SP245 were mixed in the rhizosphere and (or) in the root tissue. Tn5 transposed preferentially into the smallest indigenous plasmid of strain SP245 and was easily lost when this strain (SP245::Tn5) was not maintained on selective medium. This mutated Azospirillum strain caused plant growth stimulation when inoculated onto white clover plants.

scholarly journals Intensive Reclamation of Landfills and Polygons for Solid Waste Disposal

2022 ◽  
Author(s):  
Vitaliy V. Chelnokov ◽  
Elena Zabolotnaya ◽  
Aleksey V. Matasov ◽  
Anna S. Makarova ◽  
Andrey N. Glushko
Keyword(s):  
Plant Growth ◽  
Solid Waste ◽  
Waste Disposal ◽  
Growth Stimulation ◽  
Solid Waste Disposal ◽  
Active Components ◽  
Plant Growth Stimulation ◽  
Stimulate Plant Growth

This research proposed the use of one of the most effective complexons – oxyethylidenediphosphonic acid, namely its derivative compound – phenyldiacetic acid,for the active sorption matrices of humus of mineral origin. The application of active components that stimulate plant growth and photosynthesis processes in hybrid preparations during reclamation were also proposed. Keywords: recultivation of landfill, plant growth stimulation, phytoremediation

scholarly journals Plant Growth Stimulation by Microbial Consortia

Agronomy ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 219
Author(s):  
Gustavo Santoyo ◽  
Paulina Guzmán-Guzmán ◽  
Fannie Isela Parra-Cota ◽  
Sergio de los Santos-Villalobos ◽  
Ma. del Carmen Orozco-Mosqueda ◽  
...  
Keyword(s):  
Plant Growth ◽  
Abiotic Stress Tolerance ◽  
Growth Stimulation ◽  
Microbial Consortia ◽  
Plant Growth Promoting Bacteria ◽  
Biotic And Abiotic Stress ◽  
Beneficial Effects ◽  
Plant Growth Stimulation ◽  
Plant Growth Promoting ◽  
Multiple Species

Plant-associated microorganisms play an important role in agricultural production. Although various studies have shown that single microorganisms can exert beneficial effects on plants, it is increasingly evident that when a microbial consortium—two or more interacting microorganisms—is involved, additive or synergistic results can be expected. This occurs, in part, due to the fact that multiple species can perform a variety of tasks in an ecosystem like the rhizosphere. Therefore, the beneficial mechanisms of plant growth stimulation (i.e., enhanced nutrient availability, phytohormone modulation, biocontrol, biotic and abiotic stress tolerance) exerted by different microbial players within the rhizosphere, such as plant-growth-promoting bacteria (PGPB) and fungi (such as Trichoderma and Mycorrhizae), are reviewed. In addition, their interaction and beneficial activity are highlighted when they act as part of a consortium, mainly as mixtures of different species of PGPB, PGPB–Mycorrhizae, and PGPB–Trichoderma, under normal and diverse stress conditions. Finally, we propose the expansion of the use of different microbial consortia, as well as an increase in research on different mixtures of microorganisms that facilitate the best and most consistent results in the field.

Plant growth stimulation in Prunus species plantlets by BTH or OTC treatments under in vitro conditions

2012 ◽  
Vol 169 (11) ◽  
pp. 1074-1083 ◽  
Author(s):  
María José Clemente-Moreno ◽  
Pedro Díaz-Vivancos ◽  
Abel Piqueras ◽  
José Antonio Hernández
Keyword(s):  
Plant Growth ◽  
Growth Stimulation ◽  
Prunus Species ◽  
Plant Growth Stimulation
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