Production of a Gibberellin-like Substance by Arthrobacter globiformis

Katznelson, H.; Sirois, Jean; Cole, Shirley E.

doi:10.1038/1961012b0

Cited by 14 publications

(5 citation statements)

References 7 publications

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“…Jackson et al size and internodal length of tomatoes. Results reported by Katznelson et al (10) for Arthrobacter globiformis indicate the variability that may be obtained with the same extracts but with different assay systems as reported also by Stowe and Yamalii (22). Recalculation of the data obtained with the lettuce seed germination test gave values of about 100 pg A3 per liter whereas the figure for the lettuce hypocotyl elongation test was 2 pg A3 per liter, comparable to the values recorded in the present paper.…”

Section: Discussionsupporting

confidence: 90%

“…Because of recent refinements and improvements in techniques that perinit the detection of extremely minute amounts of gibberellin-like substances (2,12,18) in plant tissue, it became of interest to re-examine various microorganisms for their ability to synthesize these gron-th-promoting compounds. Preliminary trials were therefore undertalien by I<atznelson et al (10) with a soil bacterium, Arthrobacter globiformis, \\-hich was indeed found to produce minute amounts of a zibberellin-like substance. u The present paper gives the results of similar studies extended to include other microorganisins commol~ly occurring in soil as well as several related species, and particularly bacteria associated with plant roots (Rhizobium spp.…”

Section: Introductionmentioning

confidence: 99%

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Production of Gibberellin-Like Substances by Bacteria and Actinomycetes

Katznelson¹,

Cole²

1965

Can. J. Microbiol.

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The production of gibberellin-lilie substances by bacteria and actinomycetes was investigated. Most of the bacterial cultures tested produced a gibberellic acidlilce substance (A3) in ~I~O~I I I~S varying from 1 t o 14 pg/liter. The production of a gibberellin-A9-like colnpound was much more limited, 6 out of 15 cultures yielding small amounts. Six out of 11 actinomycetes showed evidence of A3 synthesis; two produced .A1. Antigibberellin substances co-chromatographing with A3 mere detected in culture filtrates of Bacillz~s poly~nyxa and two actinomycetes. Cultural conditions and concentration of the ingredients of the medium influenced gibberellin synthesis by .4grobactel.iz~tn radiobacbi. Production of these substances was not growth linked and none was detected in stationary cultures. h~Iicrobial slnthesis of the gibberellins was demonstrated also by means of assays with the dwarf maize mutants dl, d?, and dj.A:, added to soil was rapidly inactivated and it was postulated that the plant could derive maximum beneht from microbial synthesis of gibberellins and related substances only a t the root surface--the rhizoplane.

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Section: Discussionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Production of Gibberellin-Like Substances by Bacteria and Actinomycetes

Katznelson¹,

Cole²

1965

Can. J. Microbiol.

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“…The Arthrobacter type bacteria contribute to degradation of hydrocarbon compounds. Literature sources indicate that this type of bacteria can initiate the growth of plants, also thanks to production of phytohormones (Katsnelson & Sirois, 1961;Katsnelson et al, 1962). In case of shortage of potassium, exometabolites of Arthrobacter sp.…”

Section: Resultsmentioning

confidence: 99%

Composition of the Microorganism Community Found in the Soil Cover on the Dried Seabed of the Aral Sea

Stulina¹,

Верховцева²,

Gorbacheva³

2019

GEP

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As a result of the Aral Sea shrinkage, the unique freshwater body has given place to a huge bitter-saline lake with an area 3.5 times less, volume 6 times less and water salinity 10 times larger than in 1960, and the saline desert at the interface between three sand deserts with an area of more than 5 million ha, being unstable ecological zone. The exposed ground is illustrative of arid salt-accumulation, where was created specific type of soil-costal solonchak. The origination of life in the soil of the dried bed starts long before the occurrence of external characteristics. This process can be traced only by studying the microbiological composition of soil. Research in this direction, was conducted in order to determine the microbiological composition of soil for horizons of one typical profile of solonchak. The research objective was to determine microorganism species in the soil on the dried seabed, identify changes in the microorganism community along the soil profile and dependence on duration of the drying process. Additionally, we paid attention to a vegetation effect on the composition of microorganisms. Soil samples were taken along a transect from the sea to the mainland, selected from the different depth of soil profiles taken under or near plant (saxaul). The method Gas chromatography mass-spectrometry was used. Bacteria of the community of microorganisms in different parts of the soil cover on the dried seabed of the Aral Sea and on the mainland belong to five bacterial phyla: Proteobacteria Actinobacteria Firmicutes Bacteroidetes and Deinococcus-Thermus. In general, 59 bacterial species of 43 genera were reconstructed. The total population varied from 10 5 cells/g to 10 8 cells/g of the soil. The association Aeromonas hydrophila-Arthrobacter sp. played the key role at the first stages of the soil formation process on the dried seabed of the Aral Sea. This association is followed by salt-resistant Agrobacterium sp.

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“…They generate the diverse metabolic functions necessary during plant growth steps such as seed germination, stem elongation, sex expression, flowering, formation of fruits, and senescence (Hedden, 1997). Gibberellins actinobacterial species production was reported in several studies, as for Streptomyces olivaceoviridis, S. rochei and S. rimosus cultures which were excellent producers of gibberellins-like substances, showing wheat plant growth promotion (Aldesuquy et al, 1998) and for Arthrobacter globiformis (Katznelson et al, 1962).…”

Section: Producing Phytohormones Like Auxins Cytokinins and Gibberellinsmentioning

confidence: 99%

Plant Growth Promoting Actinobacteria, the Most Promising Candidates as Bioinoculants?

Boukhatem¹,

Merabet²,

Tsaki³

2022

Front. Agron.

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Plant Growth Promoting Bacteria (PGPBs) are a strong ally for sustainable agriculture. They offer an interesting alternative to chemical fertilizers and pesticides. Many microorganisms have been widely documented for their PGPR traits, but actinobacterial microbes which have been increasingly documented only these two past decades for their ability to promote plant growth. Their action on plant health and yield could be either direct, indirect or both. This review will cover articles that have been published on Actinobacteria PGP traits, highlighting the involved mechanisms to reveal their strong potential as microbial fertilizers. Possible strategies to encourage Actinobacteria use as bioinoculants are also discussed.

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Production of a Gibberellin-like Substance by Arthrobacter globiformis

Cited by 14 publications

References 7 publications

Production of Gibberellin-Like Substances by Bacteria and Actinomycetes

Production of Gibberellin-Like Substances by Bacteria and Actinomycetes

Composition of the Microorganism Community Found in the Soil Cover on the Dried Seabed of the Aral Sea

Plant Growth Promoting Actinobacteria, the Most Promising Candidates as Bioinoculants?

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