The development of Azospirillum as a commercial inoculant for improving crop yields

Okon, Yaacov; Itzigsohn, Robin

doi:10.1016/0734-9750(95)02004-m

Cited by 134 publications

(61 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Apart for the general role of these compounds in growth-promotion of plants by free-living bacteria, phytohormones and vitamins have also been linked with the favourable in¯uence of combined inoculation of legumes with Rhizobium plus Azospirillum or Pseudomonas strains (Iruthayathas et al, 1983;Derylo and Skorupska, 1993;Okon and Itzigsohn, 1995). On the other hand, local Azotobacter strains DR25 and DR26 were mainly chosen for inoculation of V. faba because of their high ARA values in pure culture.…”

Section: Discussionmentioning

confidence: 99%

“…Production of plant growth regulators such as phytohormones and vitamins is a common feature among azotobacters (Arshad and Frankenberger, 1991) and it has been reported for strains of the three species (A. chroococcum, A. vinelandii and A. paspali) that associate with the rhizosphere of plants (Do Èbereiner and Pedrosa, 1987;Martõ Ânez-Toledo et al, 1991). These growth regulators in¯uence plant root proliferation, respiration rate and metabolism, improving mineral and water uptake in inoculated plants (Okon and Itzigsohn, 1995). Antifungal activity of Azotobacter strains is also common, and thus suppression of pathogenic fungi by these bacteria has been frequently discussed as a mechanism bene®ting plant growth (Brown, 1974).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Response of Faba bean (Vicia faba L.) to combined inoculation with Azotobacter and Rhizobium leguminosarum bv. viceae

Rodelas¹,

González‐López²,

Pozo³

et al. 1999

Applied Soil Ecology

View full text Add to dashboard Cite

Mixed inoculation of the grain legume faba bean (Vicia faba L.) with Rhizobium leguminosarum bv. viceae strain Z25 and ®ve different Azotobacter chroococcum or A. vinelandii strains, under gnotobiotic conditions of culture, resulted in signi®cant effects on nodulation, plant growth and nitrogenase activity (acetylene-reduction activity, ARA) of nodulated roots at thē owering stage. A. chroococcum strain H23 and A. vinelandii strains ATCC 12837 and Dv42 promoted plant growth, signi®cantly increasing dry matter accumulation in all plant parts including nodules, as well as total N content. A. chroococcum strain DR26 increased ARA of nodulated roots over 100% when compared with control plants inoculated with Rhizobium alone. Only A. chroococcum strain DR25 decreased plant growth. The effects of each Azotobacter strain are signi®cantly related to viable cell numbers applied as inocula. #

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Response of Faba bean (Vicia faba L.) to combined inoculation with Azotobacter and Rhizobium leguminosarum bv. viceae

Rodelas¹,

González‐López²,

Pozo³

et al. 1999

Applied Soil Ecology

View full text Add to dashboard Cite

show abstract

“…Moreover, their application has recently expanded both in forestry and in phytoremediation of contaminated soils. Strains belonging to the genera Azospirillum (Okon & Labandera-Gonzalez, 1994;Okon & Itzigshon, 1995;Dobbelaere et al, 2001), Bacillus (Reddy & Rahe, 1989;Kokalis-Bourelle et al, 2002;Kokalis-Burelle et al, 2006) and Pseudomonas (McCullaugh et al, 1996;Meyer et al, 2010) have been used in experimental tests on a wide range of economically important crops.…”

Section: Plant-microorganism Interactions: Ecological Implicationsmentioning

confidence: 99%

Plant Beneficial Microbes and Their Application in Plant Biotechnology

Russo¹,

Carrozza²,

Vettori³

et al. 2012

Innovations in Biotechnology

View full text Add to dashboard Cite

“…Microbes living on plant surfaces are known as epiphytes; those living in phyllospheres, or leaf surfaces inhabit the largest biological surface area on Earth (Whipps et al 2008), but bacteria living on root surfaces and the attached soil (rhizospheres) exist at the site of critical uptake of nutrients and water. Common examples of rhizosphere bacteria that aid in plant growth, health and nutrition include Pseudomonas species which secrete antibiotics into the rhizosphere protecting wheat against take-all pathogens in the soil (Raaijmakers and Weller 1998) and species of Azospirrillum which secrete phytohormones into rhizospheres, promoting root growth, development and function (Okon and Itzigsohn 1995). Plants influence the microbial composition of their rhizospheres, by secreting a variety of compounds through their roots into the surrounding soil to feed and manipulate the microbes that live there.…”

Section: Introductionmentioning

confidence: 99%

Bacterial populations in juvenile maize rhizospheres originate from both seed and soil

Johnston‐Monje

Lundberg

Lazarovits³

et al. 2016

Plant Soil

205

130

View full text Add to dashboard Cite

Background and aims To assess the impacts of soil microbes and plant genotype on the composition of maize associated bacterial communities. Methods Two genotypes of Brazilian maize were planted indoors on sterile sand, a deep underground subsoil, and a nutrient-rich topsoil from the Amazon jungle (terra preta). DNA was extracted from rhizospheres, phyllospheres, and surface sterilized roots for 16S rDNA fingerprinting and next generation sequencing.Results Neither plant genotype nor soil type appeared to influence bacterial diversity in phyllospheres or endospheres. Rhizospheres showed strikingly similar 16S rDNA ordination of both fingerprinting and sequencing data, with soil type driving grouping patterns and genotype having a significant impact only on sterile sand. Rhizospheres grown in non-sterile soils contained greater bacterial diversity than sterile-sand grown ones, however the dominant OTUs (species of Proteobacteria and Bacteroidetes) were found in all rhizospheres suggesting seeds as a common source of inoculum. Rhizospheres of the commercial hybrid appeared to contain less bacterial diversity than the landrace. Conclusions Maize rhizospheres receive diverse bacteria from soil, are influenced by the genotype or treatment of the seed, and are dominated by species of Proteobacteria, Actinobacteria, Bacteroidetes, and Firmicutes. As many dominant 16S rDNA sequences were observed in rhizospheres grown in both sterile and non-sterile substrate, we conclude that the most common bacterial cells in juvenile maize rhizospheres are seed transmitted.

show abstract

The development of Azospirillum as a commercial inoculant for improving crop yields

Cited by 134 publications

References 10 publications

Response of Faba bean (Vicia faba L.) to combined inoculation with Azotobacter and Rhizobium leguminosarum bv. viceae

Response of Faba bean (Vicia faba L.) to combined inoculation with Azotobacter and Rhizobium leguminosarum bv. viceae

Plant Beneficial Microbes and Their Application in Plant Biotechnology

Bacterial populations in juvenile maize rhizospheres originate from both seed and soil

Contact Info

Product

Resources

About