Phytohormone-like substances produced by single and mixed diazotrophic cultures of Azospirillum and Arthrobacter

Cacciari, I.; Lippi, D.; Pietrosanti, T.; Pietrosanti, W.

doi:10.1007/bf02220706

Cited by 92 publications

(46 citation statements)

References 12 publications

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“…and Arthrobacter sp. (Cacciari et al, 1989), Streptomyces albidoflavus (Narayana et al, 2009), Rhizobium sp. (Nalini and Rao, 2014)) and mold (Aspergillus niger (Bilkay et al, 2010)).…”

Section: Discussionmentioning

confidence: 99%

Temperature, pH and carbon source affect drastically indole acetic acid production of plant growth promoting yeasts

Scarcella

Bizarria

Bastos

et al. 2017

Braz. J. Chem. Eng.

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-Rhizosphere and phylloplane yeasts are able to produce phytohormones, acting as potential plant growth promoters. The aim of this study was to analyze the production of indole acetic acid (IAA) by yeasts using variations in the culture conditions. The yeasts evaluated were Rhodotorula mucilaginosa and Trichosporon asahii, which were cultivated in a potato broth medium with 20 g/L of glucose or sucrose as the carbon source. The cultivation was carried out at 22°C, 25°C or 30°C, and the initial pH was adjusted to 3.0, 4.5 or 6.0. The cultures were analyzed using a colorimetric technique with Salkowski reagent. The cell count was determined in all of the conditions. The results for T. asahii showed that IAA production with sucrose was superior at pH 6.0, and that with glucose was superior at pH 4.5. These results indicate an association between the carbon source and medium pH. Rh. mucilaginosa (2F32) presented a high IAA production when compared with T. asahii (3S44 and 4C06) or even with other microorganisms referenced in the literature. The highest production (0.655 g/L) was obtained at pH 6.0 with glucose as the carbon source. Variations in the culture conditions did not affect the cell growth of the yeasts.

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“…and Arthrobacter sp. (Cacciari et al, 1989), Streptomyces albidoflavus (Narayana et al, 2009), Rhizobium sp. (Nalini and Rao, 2014)) and mold (Aspergillus niger (Bilkay et al, 2010)).…”

Section: Discussionmentioning

confidence: 99%

Temperature, pH and carbon source affect drastically indole acetic acid production of plant growth promoting yeasts

Scarcella

Bizarria

Bastos

et al. 2017

Braz. J. Chem. Eng.

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“…Furthermore, the increments in plant growth due to biofertilizersapplication might be a result of thevital role of bacteria that present in the applied biofertilizer inproducingsome hormone substances, i.e. gibberellins, auxins and cytokinins (Tien et al, 1979, Bouton et al, 1985, Cacciari et al, 1989and Noel etal., 1996. These phytohormones may stimulate the cell elongation and development and hence plant growth (Paleg, 1985).…”

Section: Plant Growth Measurementsmentioning

confidence: 99%

Effect of Soil Biofertilizers and Biochar Application on Production of Garlic Cultivars Grown in Sandy Soil Conditions

2017

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“…strain B510 has a growth-promoting effect on host rice plant, especially on horizontal growth, leading to increased numbers of productive tillers in the early stage and resulting in increased seed production through increased numbers of panicles. Extensive studies have been conducted to characterize the plant growth-promoting effects of PGPRs including Azospirillum species (3, 5-7, 14, 17), with reports that some of these bacteria produced plant hormones, such as IAA (13), cytokinines (2,8) and gibberellins (1). At present, it is not known whether strain B510 produces plant hormones inside the host to promote its growth, although it may have this ability (1,2,8,14).…”

mentioning

confidence: 99%

“…Extensive studies have been conducted to characterize the plant growth-promoting effects of PGPRs including Azospirillum species (3, 5-7, 14, 17), with reports that some of these bacteria produced plant hormones, such as IAA (13), cytokinines (2,8) and gibberellins (1). At present, it is not known whether strain B510 produces plant hormones inside the host to promote its growth, although it may have this ability (1,2,8,14). To our knowledge, as endophytic bacteria, only Azoarcus in rice and Gluconacetobacter in sugar cane have been reported to promote the growth of plants in pots under greenhouse conditions.…”

mentioning

confidence: 99%

Azospirillum sp. Strain B510 Enhances Rice Growth and Yield

Isawa¹,

Yasuda²,

Awazaki³

et al. 2010

Microb. Environ.

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Inoculation experiments with the endophytic bacterium Azospirillum sp. strain B510, an isolate from surface-sterilized stems of field-grown rice, were conducted in pots in a greenhouse, and in paddy fields in Hokkaido, Japan. B510 significantly enhanced the growth of newly generated leaves and shoot biomass under greenhouse conditions. When rice seedlings were treated with 1×10 8 CFU ml −1 , then transplanted to paddy fields, tiller numbers and seed yield significantly increased. Azospirillum sp. strain B510 is a promising bacterial inoculant for plant growth promotion and agricultural practices.

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Phytohormone-like substances produced by single and mixed diazotrophic cultures of Azospirillum and Arthrobacter

Cited by 92 publications

References 12 publications

Temperature, pH and carbon source affect drastically indole acetic acid production of plant growth promoting yeasts

Temperature, pH and carbon source affect drastically indole acetic acid production of plant growth promoting yeasts

Effect of Soil Biofertilizers and Biochar Application on Production of Garlic Cultivars Grown in Sandy Soil Conditions

Azospirillum sp. Strain B510 Enhances Rice Growth and Yield

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