Current status of <i>Azospirillum</i> inoculation technology: <i>Azospirillum</i> as a challenge for agriculture

Bashan, Yoav; Levanony, Hanna

doi:10.1139/m90-105

Cited by 350 publications

(211 citation statements)

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“…Hormonal effects, however, are complex and, often, specific responses result not from a single hormone but from the balance of several (28). Other investigators have encountered similar difficulties in demonstrating hormonal regulation or production as a mechanism of growth promotion, and the evidence remains mostly circumstantial (3,7,14,23). Our approach for studying growth promotion is to produce nonpromoting mutants (isogenic to the parental strain) by Tn5 transposon mutagenesis.…”

Section: Discussionmentioning

confidence: 99%

Growth Enhancement and Developmental Modifications of in Vitro Grown Potato (Solanum tuberosum spp. tuberosum) as Affected by a Nonfluorescent Pseudomonas sp.

Frommel¹,

Nowak²,

Lazarovits³

1991

Plant Physiol.

212

118

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A plant growth-promoting rhizobactenum, designated Ps JN and isolated from onion roots, was identified as a nonfluorescent Pseudomonas sp. The percentage of similarity of Ps JN to P.gladioli (NCPPB 1891), P. ckhordi (NCPPB 943), and P. viridiflava (NCPPB 635), as determined from 135 biochemical and physiological tests was 77, 70, and 66%, respectively. Ps JN persisted through successive generations of in vitro cultured potato plantlets, both as endophytic and epiphytic populations. In vitro inoculated potato (Solanum tuberosum) nodal explants produced plantlets with significant increases in root number (24-196%), root dry weight (44-201%), haulm dry weight (14-151%), and stem length (26-28%) as compared with noninoculated control plants. Bacterization also enhanced leaf hair formation (55-110%), secondary root branching, and total plant lignin content (43%). Other root colonizing bacteria or heat-killed cells of Ps JN had no significant effect on plant growth. Detached leaves from in vitro grown control plants, when exposed to 190C and 50% relative humidity, lost 55% of their moisture content in 2.5 hours.Moisture loss by leaves of in vitro grown, bacterized plants, as well as greenhouse-acclimated, bacterized plants, and control plants, was less than 20%. Changes in stomatal closure appear to account for this difference.

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Section: Discussionmentioning

confidence: 99%

Growth Enhancement and Developmental Modifications of in Vitro Grown Potato (Solanum tuberosum spp. tuberosum) as Affected by a Nonfluorescent Pseudomonas sp.

Frommel¹,

Nowak²,

Lazarovits³

1991

Plant Physiol.

212

118

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“…PGPR with ACC deaminase were isolated from rhizosphere of various plants (Belimov et al, 2001). What's more, some rhizobacteria can promote plant growth by the synthesis of other compounds, such as siderophores, indole-3-acetic acid (IAA) and antibiotics with heavy metal contaminants, which is different from organic pollutants (Burd et al, 2000;Glick, 2001;Pattern and Glick, 1996) or though stimulation of certain metabolic pathways such as nitrogen fixation and the uptake of nitrogen, phosphorus, S, Mg, Ca and other nutrients (Bashan and Levanony, 1990;Belimov and Dietz, 2000;Okon and Labandera-Gonzalez, (2003) 1994). Leong (1986) reported that heavy metals in soils could stimulate the production of siderophores.…”

Section: Prompting Plant Growthmentioning

confidence: 99%

New advances in plant growth-promoting rhizobacteria for bioremediation

Zhuang

Chen

Shim

et al. 2007

Environment International

510

197

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“…The similar results between the inoculation of the strains associated with the N fertilizations of 30 kg ha -1 and 160 kg ha -1 reflect the effect of growth promotion caused by the PGPB, involving a set of mechanisms besides the production of phytohormones, such as biological control of phytopathogens, BNF and solubilization of phosphates (Bashan & Levanony, 1990;Pidello et al, 1993). In addition, the inoculation of PGPB associated with low N doses has shown greater efficiency for the plant-bacteria system, in comparison to isolated inoculation, while the application of high N doses reduces such efficiency due to the plant response to the stimulation in the absorption of the nutrient, limiting the biological process (Bárbaro et al, 2008).…”

Section: Resultsmentioning

confidence: 64%

Maize response to inoculation with strains of plant growth-promoting bactéria

Dartora

Guimarães

Menezes

et al. 2016

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThe aim of this study was to evaluate the response of maize to inoculation with strains of plant growth-promoting bacteria (PGPB) in two cultivation years. The experiment was set in a randomized block design with four replicates in two cultivation years (2012/13 and 2013/14). The treatments consisted of PGPB inoculation: control (without N and without inoculation); 30 kg of N ha -1 at sowing (N1); 160 kg of N ha -1 (N1 + 130 kg of N ha -1 as top-dressing); N1 + A. brasilense, Ab-V5; N1 + A. brasilense, HM053; N1 + Azospirillum sp. L26; N1 + Azospirillum sp. L27; N1 + Enhydrobacter sp. 4331; N1 + Rhizobium sp. 8121. Basal stem diameter, plant height, leaf area, shoot dry matter and yield were evaluated. The strain of Rhizobium sp. 8121and the isolate Azospirillum sp. L26 associated with 30 kg of N ha -1 at sowing promoted yields equivalent to that of the N fertilization of 160 kg ha -1 , demonstrating the potential to be used in the inoculation of maize seeds.Resposta do milho à inoculação de estirpes de bactérias promotoras do crescimento de plantas R E S U M O Neste trabalho objetivou-se avaliar a resposta do milho à inoculação de estirpes de bactérias promotoras do crescimento de plantas (BPCP's) em dois anos de cultivo. O experimento foi conduzido em delineamento experimental de blocos ao acaso com quatro repetições em dois anos de cultivo (2012/13 e 2013/14). Os tratamentos foram constituídos pela inoculação de BPCP's: controle (sem N e sem inoculação); 30 kg ha -1 N na semeadura (N1); 160 kg ha -1 N (N1 + 130 kg ha -1 N em cobertura); N1 + A. brasilense, Ab-V5; N1 + A. brasilense, HM053; N1 + Azospirillum sp., L26; N1 + Azospirillum sp., L27; N1 + Enhydrobacter sp. 4331; N1 + Rhizobium sp. 8121. Diâmetro basal do colmo, altura da planta, área foliar, massa seca da parte aérea e produtividade foram avaliados. A estirpe de Rhizobium sp. 8121 e o isolado de Azospirillum sp. L26 associados à adubação com 30 kg ha -1 N na semeadura proporcionaram produtividades equivalentes à adubação com 160 kg ha -1 N demonstrando potencial para serem utilizadas na inoculação de sementes de milho.

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Current status of Azospirillum inoculation technology: Azospirillum as a challenge for agriculture

Abstract: The genus Azospirillum The first species of Azospirillum was isolated by Beijerinck (1925) from N-poor sandy soil in the Netherlands and was originally named Spirillum lipoferum. This bacterium was later isolated from soil (Schroder 1932

Cited by 350 publications

References 223 publications

Growth Enhancement and Developmental Modifications of in Vitro Grown Potato (Solanum tuberosum spp. tuberosum) as Affected by a Nonfluorescent Pseudomonas sp.

Growth Enhancement and Developmental Modifications of in Vitro Grown Potato (Solanum tuberosum spp. tuberosum) as Affected by a Nonfluorescent Pseudomonas sp.

New advances in plant growth-promoting rhizobacteria for bioremediation

Maize response to inoculation with strains of plant growth-promoting bactéria

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