Inoculação de bactérias produtoras de ácido 3-indol acético em plantas de alface (&lt;i&gt;Lactuca sativa&lt;/i&gt; L.)

Florentino, Ligiane Aparecida; Silva, Adriano Bortolotti da; Landgraf, Paulo Roberto Corrêa; Souza, Flávia Roman da Costa

doi:10.17584/rcch.2017v11i1.5780

Cited by 10 publications

(17 citation statements)

References 25 publications

(32 reference statements)

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“…The Unifenas strains 100-21, 100-26 and 100-54 promoted a longer leaf length, due to their ability of producing IAA (Florentino et al 2017a), what may be an important mechanism on selecting inoculant strains for forage grasses.…”

Section: Resultsmentioning

confidence: 99%

“…These strains have been studied for their ability to fix N 2 in Brachiaria brizantha cv. Xaraés (Dias et al 2019), solubilize potassium (Florentino et al 2017b) and produce IAA (Florentino et al 2017a). A group of diazotrophic bacteria strains selected at the Universidade José do Rosário Vellano (Unifenas) was prioritized in this study.…”

Section: Methodsmentioning

confidence: 99%

“…Diazotrophic bacteria also contribute to the plant development by producing growth-stimulating hormones such as indole-3-acetic acid (IAA). The inoculation with IAA-producing diazotrophs can increase the germination rate and initial development of lettuce seedlings (Florentino et al 2017a), besides promoting growth in several economically important plants (Moreira et al 2010).…”

Section: Palavras-chavementioning

confidence: 99%

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Growth promotion of Guinea grass by diazotrophic bacteria1

Silva

Oliveira

et al. 2019

Pesqui. Agropecu. Trop.

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The Panicum maximum species (cv. Mombaça) is a forage plant well adapted to the different edaphoclimatic conditions found in Brazil; however, it requires high nitrogen fertilizer doses to ensure high yields. The present study aimed to assess the inoculation effect with associative diazotrophic bacteria strains on the yield and bromatological characteristics of the Guinea grass. A randomized block design was used, consisting of 25 treatments, being 23 of them inoculated with diazotrophic bacteria and two without inoculation (one with and the other without mineral nitrogen), with four repetitions. The analyzed variables were stem diameter; leaf width and length; leaf, stem and root dry mass yield; crude protein; acid and neutral detergent fibers. There were no differences among the treatments for root dry mass, stem diameter and acid detergent fiber. For the remaining variables, a positive effect of the inoculation with diazotrophic bacteria was observed, particularly for the following Unifenas strains: 100-06, 100-13, 100-26, 100-30, 10-35, 100-54, 100-69, 100-71 and 100-94. This reveals the potential of these bacterial strains for use at the sustainable production of the Guinea grass with a reduction in the use of nitrogen inputs.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Palavras-chavementioning

confidence: 99%

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Growth promotion of Guinea grass by diazotrophic bacteria1

Silva

Oliveira

et al. 2019

Pesqui. Agropecu. Trop.

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“…Moreira and Araujo (2013) observed that the 127 rhizospheric isolates from eucalyptus produced IAA and 85 % of them provided amounts from 4 to 8 mg mL -1 , much higher than those found by many reports. Florentino et al (2017) observed the diazotrophic bacterial isolates efficiency to the IAA production that ranged from 3.99 to 46.97 μ mL -1 . The highest amount was reached by one of the isolates that was statistically equivalent to the control, Azospirillum brasilense, a bacterium known as IAA producer.…”

Section: Bacillus Sp Isolates Plant Growth-promoting Mechanisms In Vmentioning

confidence: 94%

Isolates of Bacillus sp. from garlic: effect on corn development and plant growth-promoting mechanisms

Balbinot¹,

Rodrigues²,

ReginaBotelho³

2020

Revista Brasileira De Ciência Do Solo

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Corn and garlic are important crops to Curitibanos region (state of Santa Catarina-Brazil), often planted in alternate cropping seasons. Production costs are high, especially due to N fertilizer, since they are highly demanding in N. In addition to reducing economic costs, the search for environmentally sustainable technologies has stimulated the study of interactions between plants and growth-promoting microorganisms. Rhizobacteria, e.g., Bacillus sp., have been presenting as growth-promoting microorganisms. Five isolates of garlic rhizosphere from 27 individuals of the Plant Growth Promoting Microorganisms group collection were tested on corn under field conditions, comparing to two levels of nitrogen fertilization: 120 and 60 kg ha-1. The Bacillus collection was also evaluated in vitro for phosphate solubilization, production of IAA (Indole Acetic Acid), extracellular enzymes, and inhibition of Sclerotium cepivorum. For plant height and stalk diameter, the inoculation of the EB16 isolate showed similar results to the fertilization with 120 and 60 kg ha-1 of N in corn. Both EB16 and EB02 isolates increased corn ear diameter and the yield was similar to that observed in the treatment with 60 kg ha-1 of N, indicating their potential as growth-promoters. All strains of the collection produced IAA, and most of them solubilized calcium phosphate and produced lipases and urease. Forty-eight percent of the isolates inhibited S. cepivorum. The EB01, EB15, EB17, and EB27 were positive for three of the four mechanisms analyzed. During these evaluations, it was observed that EB02 and EB16 produced equivalent amounts of IAA, suggesting that more than one growth-promoting mechanism is involved in the efficiency of corn development induction.

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“…Studies have proven the benefits of inoculating diazotrophic bacterial strains for the development of maize (Breda, Alves, & Reis, 2016), wheat (Mumbach et al, 2017), rice (Beutler et al, 2012) and sugarcane (Donato, Andrade, Souza, França, & Maciel, 2004). In addition to BNF, these bacteria perform other processes, e.g., production of siderophores (Fedrizzi, 2006), solubilization of phosphate (Gomes, Oliveira, Silva, & Marriel, 2014) and potassium (Uroz, Dessaux, & Oger, 2009) and production of phytohormones such as indole-3-acetic acid (IAA) (Florentino, Silva, Landgraf, & Souza, 2017a), thus acting as plant growth promoters.…”

Section: Introductionmentioning

confidence: 99%

Characterization of associative diazotrophic bacteria in torch ginger

Oliveira

Franco

Florentino

et al. 2020

Semina: Ciênc. Agrár.

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Associative diazotrophic bacteria perform several processes that promote increased plant development and production, allowing a reduction in the use of agricultural inputs and costs. However, for some species, such as torch ginger, there are still no reports of studies aimed at identifying diazotrophic bacteria associated with this species. On this basis, this study proposes to isolate and characterize associative diazotrophic bacteria in rhizospheric soils and roots of torch ginger as well as analyze the potential of these isolates in solubilizing phosphorus (P) and potassium (K) and producing indole-3-acetic acid (IAA). Soil and roots samples of torch ginger were inoculated into five different semi-solid and semi-selective culture media, namely, NFb, JNFb, LGI, JMV and FAM, where bacterial growth was diagnosed by the formation of a characteristic film on the surface of the media. Subsequently, the bacterial isolates were analyzed for their ability to solubilize P and K in liquid medium, using phosphate rock powder (AO-15) and potassium rock powder (phonolite) as sources of P and K, respectively. All culture media showed bacterial growth, making this the first report of isolation of diazotrophic bacterial strains in this species. Eight of the obtained strains originated from rhizospheric soils and four from roots of torch ginger. Of these, 10 solubilized P, with the UNIFENAS 100-340, UNIFENAS 100-342 and UNIFENAS 100-348 strains standing out. Six strains showed K solubilizing ability, UNIFENAS 100-346 being the most efficient. All strains were able to produce the IAA phytohormone, both in the presence and absence of tryptophan, with superior results obtained by UNIFENAS 100-344 and UNIFENAS 100-351.

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Inoculação de bactérias produtoras de ácido 3-indol acético em plantas de alface (<i>Lactuca sativa</i> L.)

Cited by 10 publications

References 25 publications

Growth promotion of Guinea grass by diazotrophic bacteria1

Growth promotion of Guinea grass by diazotrophic bacteria1

Isolates of Bacillus sp. from garlic: effect on corn development and plant growth-promoting mechanisms

Characterization of associative diazotrophic bacteria in torch ginger

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