Biological nitrogen fixation in Azospirillum strain-maize genotype associations as evaluated by the 15N isotope dilution technique

Salamone, Inés E. García de; Döbereiner, Johanna; Urquiaga, Segundo; Boddey, Robert M.

doi:10.1007/bf00335952

Cited by 112 publications

(36 citation statements)

References 26 publications

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“…Significant increases in nitrogen content by inoculation with Azospirillum spp. have been reported in many crops, including cotton, wheat, sugarcane, and corn (Garcia de Salamone et al 1996;Fayez and Daw 1987;(Saubidet et al 2000). It should be noted however that nitrogen fixation does not account for all of the observed growth promotion noted with the use of Azospirillum species.…”

Section: Plant Growth Promotion Resulting From Better Nutrient Uptakementioning

confidence: 98%

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Agricultural uses of plant biostimulants

2014

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Background Plant biostimulants are diverse substances and microorganisms used to enhance plant growth. The global market for biostimulants is projected to increase 12 % per year and reach over $2,200 million by 2018. Despite the growing use of biostimulants in agriculture, many in the scientific community consider biostimulants to be lacking peer-reviewed scientific evaluation. Scope This article describes the emerging definitions of biostimulants and reviews the literature on five categories of biostimulants: i. microbial inoculants, ii. humic acids, iii. fulvic acids, iv. protein hydrolysates and amino acids, and v. seaweed extracts.Conclusions The large number of publications cited for each category of biostimulants demonstrates that there is growing scientific evidence supporting the use of biostimulants as agricultural inputs on diverse plant species. The cited literature also reveals some commonalities in plant responses to different biostimulants, such as increased root growth, enhanced nutrient uptake, and stress tolerance.

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Section: Plant Growth Promotion Resulting From Better Nutrient Uptakementioning

confidence: 98%

“…(Mrkovacki and Milic 2001), Azospirillum spp. (Garcia de Salamone et al 1996), Bacillus polymyxa (Omar et al 1996), B u r k h o l d e r i a s p p . ( B a l d a n i e t a l .…”

Section: Plant Growth Promotion Resulting From Better Nutrient Uptakementioning

confidence: 99%

Agricultural uses of plant biostimulants

2014

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“…The effects of the inoculation of several bacterial species of the genus of Azospirillum, Azotobacter, Pseudomonas, Klebsiella, Enterobacter, on the crop growth and yield, have been examined in various pasture grasses and cereal crops (Kapulnik et al, 1981;Baldani et al, 1987;Garcia et al, 1996) and also in rice (Watanabe and Lin, 1984;Yoo et al, 1986;Fujii et al, 1987), and obvious beneficial effects were observed in some crop species. However, the mechanism of the beneficial effects of these diazotrophs on the crop plants is not well understood.…”

mentioning

confidence: 99%

“…The effects of the inoculation of a single bacterial species have been examined on many crops. However, only a few studies have been conducted, regarding the effects of a mixture of several species bacteria (Fayez, 1990;Garcia et al, 1996). Cui isolated 200 free-living rhizobacteria species from different regions of China, and tested them for acetylenereducing activity singly and in several combinations.…”

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confidence: 99%

Grain Yield and Related Physiological Characteristics of Rice Plants (Oryza sativa L.) Inoculated with Free-Living Rhizobacteria

Alam

Cui

Yamagishi

et al. 2001

Plant Production Science

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“…Positive response of various crops such as wheat, corn, soybean and rice to Azospirillum inoculation has been observed (Naiman et al 2009). Positive impacts on plant growth following Azospirillum inoculation has been attained through several mechanisms including enhancement of macro-and micro nutrient content of plant, promotion of root development, production of growth regulators, nitrogen fixation and modulation of leaf anatomy (Okon 1994;García de Salamone et al 1996;Naiman et al 2009;Jafarian and 1 3 Zarea 2016;Zarea 2017). A variety of Azospirillum species and other beneficial bacteria have been reported to have ability to colonize the root systems and above ground parts of plants such as rice (Khammas et al 1989), wheat (Kopylov et al 2009), maize (Mehnaz et al 2007a, b), sugarcane, and other plants (Steenhoudt and Vanderleyden 2000).…”

Section: Introductionmentioning

confidence: 99%

Endophytic Azospirillum for enhancement of growth and yield of wheat

Karimi

Zarea

Mehnaz

2018

Environmental Sustainability

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The present study was aimed at the isolation of nitrogen fixing bacteria belonging to genus Azospirillum from wild wheat and their growth promoting effect on the bread wheat, under pot culture and filed conditions in semi-arid environment. Two bacterial strains were obtained on the NFb (N-free malate medium) medium with ability to produce phytohormone (indoleacetic acid; IAA) and fix atmospheric nitrogen. Based on 16S rRNA sequence analysis, one isolate (Sp1) showed 99% homology with Azospirillum brasilense and the second isolate (Sp2) showed 99% homology with Azospirillum zeae. Effect of these two isolated strains on bread wheat was examined under pot experiment. Both bacterial strains were found to be effective in enhancing wheat growth. However, best results were obtained with isolate Sp2. Therefore, only this strain was introduced as inoculum in field experiment, to investigate its effect on wheat yield under semi arid conditions during winter growing season 2016-2017. Based on the obtained field results, wheat inoculated with isolate Sp2 displayed an increased total grain yield by up to 18% as compared to un-inoculated plants. These results show the potential of these bacteria to be used as biofertilizer.

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Biological nitrogen fixation in Azospirillum strain-maize genotype associations as evaluated by the 15N isotope dilution technique

Cited by 112 publications

References 26 publications

Agricultural uses of plant biostimulants

Agricultural uses of plant biostimulants

Grain Yield and Related Physiological Characteristics of Rice Plants (Oryza sativa L.) Inoculated with Free-Living Rhizobacteria

Endophytic Azospirillum for enhancement of growth and yield of wheat

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