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

scholarly journals Bioactivity and Plant Growth Stimulation Studies using Mangifera indica L. Gum

2021 ◽  
Author(s):  
Antony V. Samrot ◽  
Lee Si Jie ◽  
S. Abirami ◽  
R. Emilin Renitta ◽  
S. Dhiva ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Plant Growth ◽  
Mangifera Indica ◽  
Growth Stimulation ◽  
Germination Percentage ◽  
Plant Growth Stimulation ◽  
Wet Weight ◽  
Bioactive Agent

The potential of plant gum as a bioactive agent and plant growth enhancer has not been exploited well and plant gums are suitable for such purposes as they are non-toxic and biodegradable. Therefore, the aim of this study was to verify the potential of Mangifera indica (MI) gum as a bioactive agent and plant growth enhancer. Plant gum was collected from the bark of MI and polysaccharides were extracted, purified and characterized with ultraviolet-visible (UV-Vis) spectroscopic, Fourier-transform infrared spectroscopy and gas chromatography (GC) analyses. Crude and purified polysaccharides were tested for their antibacterial and antioxidant activity. The crude gum was subjected to plant growth stimulation study like germination percentage, shoot length, root length and wet weight of chilli (Capsicum frutescens). The effect of MI gum on soil porosity and water holding capacity (WHC) was also tested. UV-Vis and GC analyses of gum polysaccharide showed the presence of several types of monosaccharides in MI gum. The plant gum did not show any antibacterial activity against Escherichia coli, Pseudomonas sp., Bacillus sp. and Staphylococcus aureus, but was found to exhibit low antioxidant activity. The gum was found to enhance the seed germination and seedling growth in-vitro and in-vivo.

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 Plant Growth Stimulation and Root Colonization Potential of In Vivo versus In Vitro Arbuscular Mycorrhizal Inocula

HortScience ◽  
2013 ◽  
Vol 48 (7) ◽  
pp. 897-901 ◽  
Author(s):  
Cinta Calvet ◽  
Amelia Camprubi ◽  
Ana Pérez-Hernández ◽  
Paulo Emilio Lovato
Keyword(s):  
Plant Growth ◽  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Growth Stimulation ◽  
Mycorrhizal Root ◽  
Colonization Potential ◽  
Mycorrhizal Propagules

Inoculum of arbuscular mycorrhizal fungi, with growing use in horticulture, is produced mainly in two technically different cultivation systems: in vivo culture in symbiosis with living host plants or in vitro culture in which the fungus life cycle develops in association with transformed roots. To evaluate the effectiveness and the infectivity of a defined isolate obtained by both production methods, a replicated comparative evaluation experiment was designed using different propagules of Rhizophagus irregularis produced in vivo on leek plants or in vitro in monoxenic culture on transformed carrot roots. The size of the spores obtained under both cultivation methods was first assessed and bulk inoculum, spores, sievings, and mycorrhizal root fragments were used to inoculate leek plantlets. Spores produced in vitro were significantly smaller than those produced in vivo. Although all mycorrhizal propagules used as a source of inoculum were able to colonize plants, in all cases, leek plants inoculated with propagules obtained in vivo achieved significantly higher mycorrhizal colonization rates than plants inoculated with in vitro inocula. Inoculation with in vivo bulk inoculum and in vivo mycorrhizal root fragments were the only treatments increasing plant growth. These results indicate that the production system of arbuscular mycorrhizal fungi itself can have implications in the stimulation of plant growth and in experimental results.

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 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

Compatibility of plant growth promoting rhizobacterial strains with agrichemicals applied to seed

1992 ◽  
Vol 38 (1) ◽  
pp. 45-50 ◽  
Author(s):  
Robert M. Zablotowicz ◽  
Caroline M. Press ◽  
Nicola Lyng ◽  
Gerry L. Brown ◽  
Joseph W. Kloepper
Keyword(s):  
Plant Growth ◽  
Plant Growth Promoting Rhizobacteria ◽  
Growth Stimulation ◽  
Seed Treatments ◽  
Greenhouse Study ◽  
Select Group ◽  
Plant Growth Promoting ◽  
Growth Promoting

The compatibility of a select group of plant growth promoting rhizobacterial strains with chemicals commonly used as seed treatments was investigated. Strains in several genera (Serratia, Pseudomonas, and coryneform-like bacteria) were found to be tolerant to Vitavax RS (containing lindane, carboxin, and thiram), Epic (iprodione), and (or) captan tested in vitro at commercial rates. Six of 10 strains survived equally, and exhibited similar root colonization, on Vitavax RS treated and nontreated seed. Four of seven strains tested (Serratia spp. and P. fluorescens) were likewise found to be compatible with a captan seed treatment on supersweet corn, using the same criteria. Ability of bacteria to grow on pesticide-amended media did not always indicate compatibility with chemical seed treatments in vivo. A greenhouse study demonstrated that enhanced emergence occurred with the coryneform-like strain 44-9 on Vitavax RS treated canola seed grown under conditions favoring disease due to Rhizoctonia solani. The ability to combine plant growth promoting rhizobacterial strains with current agrichemicals for plant growth stimulation and disease control is indicated. Key words: pesticide compatibility, Pseudomonas, agrichemicals, Serratia, damping-off, plant growth promoting rhizobacteria.

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.

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