نتایج جستجو برای: azospirillum

تعداد نتایج: 1497  

Journal: :Frontiers in plant science 2016
Tahir Naqqash Sohail Hameed Asma Imran Muhammad Kashif Hanif Afshan Majeed Jan Dirk van Elsas

Rhizosphere engineering with beneficial plant growth promoting bacteria offers great promise for sustainable crop yield. Potato is an important food commodity that needs large inputs of nitrogen and phosphorus fertilizers. To overcome high fertilizer demand (especially nitrogen), five bacteria, i.e., Azospirillum sp. TN10, Agrobacterium sp. TN14, Pseudomonas sp. TN36, Enterobacter sp. TN38 and ...

Journal: :Applied and environmental microbiology 1988
A Crozier P Arruda J M Jasmim A M Monteiro G Sandberg

Analysis of neutral and acidic ethyl acetate extracts from culture medium of Azospirillum brasilense 703Ebc by high-performance liquid chromatography (HPLC) and combined gas chromatography-mass spectrometry demonstrated the presence of indole-3-acetic acid (IAA), indole-3-ethanol, indole-3-methanol, and indole-3-lactic acid. IAA in media of 20 strains of A. brasilense and Azospirillum lipoferum...

Journal: :Canadian journal of microbiology 2004
Michael F Cohen Xiang Y Han Mark Mazzola

Four phenotypically similar bacterial strains isolated from fungal, plant, and human sources were identified as Azospirillum species. Strains RC1 and LOD4 were isolated from the mycelium of the apple root pathogen Rhizoctonia solani AG 5 and from the rhizosphere of wheat grown in apple orchard soil, respectively. Strains C610 and F4626 isolated from human wounds were previously misclassified as...

Journal: :Journal of bacteriology 2006
Ludovic Vial Céline Lavire Patrick Mavingui Didier Blaha Jacqueline Haurat Yvan Moënne-Loccoz René Bally Florence Wisniewski-Dyé

The plant growth-promoting rhizobacterium Azospirillum lipoferum 4B generates in vitro at high frequency a stable nonswimming phase variant designated 4V(I), which is distinguishable from the wild type by the differential absorption of dyes. The frequency of variants generated by a recA mutant of A. lipoferum 4B was increased up to 10-fold. The pleiotropic modifications characteristic of the ph...

Journal: :Plant physiology 2001
F Cassán R Bottini G Schneider P Piccoli

Azospirillum species are plant growth-promotive bacteria whose beneficial effects have been postulated to be partially due to production of phytohormones, including gibberellins (GAs). In this work, Azospirillum brasilense strain Cd and Azospirillum lipoferum strain USA 5b promoted sheath elongation growth of two single gene GA-deficient dwarf rice (Oryza sativa) mutants, dy and dx, when the in...

2005
F. D. Cassán R. Bottini P. Piccoli

Azospirillum sp. are bacteria beneficial to inoculated plants, and the effect is partially attributed to gibberel lin production. Deutero-labelled GA9 was fed to dy mutant rice-dwarf seedlings inoculated with A. lipoferum or A. brasilense and/or treated with Prohexadione-Ca, an inhibitor of late steps in gibberellin biosynthesis. According to the shoot growth response, the mutant showed the abi...

2017
K. Kanimozhi

The present study focused on isolation and characterization of Azospirillum sp. from paddy field soils of Thanjavur (Dt), Tamil Nadu. The physico-chemical characteristics of the soil samples were analysed by using standard methods. Totally nine native strains of Azospirillum were isolated. Among the nine isolated strains three strains were belonging to Azospirillum amazonense and six strains be...

Journal: :Applied and environmental microbiology 2004
Luciano F Huergo Marcelo C Assumpção Emanuel M Souza M Berenice R Steffens M Geoffrey Yates Leda S Chubatsu Fábio O Pedrosa

The Azospirillum brasilense mutant strains FP8 and FP9, after treatment with nitrosoguanidine, showed a null Nif phenotype and were unable to use nitrate as their sole nitrogen source. Sequencing of the ntrC genes revealed single nucleotide mutations in the NtrC nucleotide-binding site. The phenotypes of these strains are discussed in relation to their genotypes.

2014
Pintu Kumar Mandal Debashis Dhara Anup Kumar Misra

A straightforward convergent synthesis has been carried out for the tetrasaccharide repeating unit of the O-specific cell wall lipopolysaccharide of the strain Sp7 of Azospirillum brasilense. The target tetrasaccharide has been synthesized from suitably protected monosaccharide intermediates in 42% overall yield in seven steps by using a [2 + 2] block glycosylation approach.

2018
Cecilia Alejandra Fontana Sergio Miguel Salazar Daniela Bassi Edoardo Puglisi Nadia Lovaisa Lucía Mercedes Toffoli Raúl Pedraza Pier Sandro Cocconcelli

The genome sequence of a plant growth-promoting bacterium and biocontrol agent, Azospirillum brasilense REC3, isolated from strawberry roots, is reported here. The A. brasilense REC3 total genome contains 7,229,924 bp and has a G+C content of 68.7 mol%.

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