Polysaccharide production by Azospirillumstrains was indicated by fluorescence on growth media containing calcofluor. Mutants showing decreased and. The interactions between Azospirillum lipoferum, Azotobacter chroococcum and Rhizobium spp. were assessed by the growth pattern and mineral concentration . Efecto de Azospirillum lipoferum y fertilización nitrogenada en el contenido de clorofila, absorción de nutrientes y propiedades biométricas de Zea mays L.
|Published (Last):||21 March 2014|
|PDF File Size:||17.54 Mb|
|ePub File Size:||11.84 Mb|
|Price:||Free* [*Free Regsitration Required]|
The fractions that would contain [17, 2 H 2 ]GA 20 and [17, 2 H 2 ]GA 1 were again collected, evaporated, and processed as described by Volmaro et al. Acidic ethyl acetate was evaporated and diluted with acetic acid: Elution was carried out with acetic acid: Information on morphological and physiological properties ,ipoferum and physiology.
So, we carried out this experiment with the hypothesis that the bacterial inoculation reduces the need for chemical N fertilizer application without reducing plant yield.
GAs are a class of phytohormones with many demonstrated effects on a number of physiological processes Davies, Azospirillum lipoferum strains showed weak zones of solubilization on the PVK plates. External factors such as light quality Piccoli and Bottini, or oxygen availability and osmotic strength Piccoli et al.
Section Name and taxonomic classification Morphology and physiology Culture and growth conditions Isolation, sampling and environmental information Molecular biology Strain availability. The finding that only [17, 2 H 2 ]GA 1 was a metabolic product of [17, 2 H 2 ]GA 20 the deconjugated aglycone strongly implies that GA 1 and GA 3 have different precursors in the route of synthesis in Azospirillum spp.
Agronomic applications of Azospirillum: Results demonstrate the beneficial influence of coinoculation of A. Treatments of the experiment were N application rates: Okon Y, Kapulnik Y. Personal tools Log in. Symbiotic Nitrogen Azospirilllum Technology. Azosprillum, the classification was revised by Tarrand et al. Collection, isolation, cultivation and maintenance of associative N2-fixing bacteria. Inoculated seeds were planted directly in the soil.
Distilled water make up to The association with A. Principles and Applications of Soil Microbiology, azopsirillum nd ed. Chemical nitrogen fertilizer and Azospirillum lipoferum inoculation significantly affected maize yield and nutrient uptake. These permits may be required for shipping this product: Table III Bacterial counts 72 h after inoculation. Ardakani and Mafakheri also point out that inoculating wheat seed with Azospirillum significantly affect plant growth factors.
Each experiment was carried out in a random design, with five repetitions per treatment. Blue light control of hypocotyl elongation in etiolated seedlings of Lactuca sativa L.
PID to R. It is interesting that inoculation with A.
Azospirillum lipoferum (Beijerinck) Tarrand et al. ATCC ® &tr
Nitrogen is the main yield limiting nutrient because of its various roles in plants tissues. After 72 h in the presence of the deuterated GA conjugates, the length of the first internode was measured. Khodaei Joghan, and A.
The effect of nitrogen fertilization and irrigation on yielding and azosprillum status of sweet basil Ocimum basilicum L. Metabolism of 17,[ 2 H 2 ]-gibberellin A 4A 9 and A 20 by Azospirillum lipoferum in chemically defined culture medium. Hydrolisis of 17,[ 2 H 2 ]-gibberellin A 20 -glucoside and 17,[ 2 H 2 ]-gibberellin A 20 -glucosyl esther by Azospirillum lipoferum cultured in nitrogen-free biotin-based chemically defined medium.
Treatments After 72 h roots, of seedlings of both rice mutants were inoculated with the Azospirillum spp.
Retrieved from ” https: The inoculation increased grain yield by It was also found that application of GA 3 in concentrations similar to those produced by the microorganism, or by inoculation with different Azospirillum spp. Beni Swif 1 inoculated with B. The result of our study showed that inoculation with Azospirillum increased N, P, Fe and Zn contents by According lipoferuum Ribaudo et al.
Again, as for the dy mutant, although reversal of dwarfism was observed in treatments with addition of hormones or with independent inoculation, the greatest growth differences were observed in those seedlings that received hormones azowpirillum microorganism together.
The hypothesis was that the bacterial inoculation decreases the need for N fertilizer application lipofrum reducing plant yield. Pharis and another anonymous reviewer is also deeply appreciated. After filtration the solid residue was extracted again and filtered.
One of the most important functions of Azospirillum is to fix atmospheric N to soil and making it available to plants Bashan and de-Bashan, Skerman VB, et al.
So, the effect of nitrogen fertilizer and Azospirillum lipoferum inoculation on maize Zea mays L. Gibberellin production in Azospirillum lipoferum cultures is enhanced by light. Regarding this issue, Piccoli et al.
Azospirillum lipoferum – microbewiki
Approved lists of bacterial names. Lipoefrum report that maize inoculated with Azospirillum had higher dry weight than the uninoculated control, due to increased uptake of N, P, K, Mg, Mn and Zn. Although the results have not always been positive, the long-term result is a profit of over percent.
Cookies used for the essential operation of the site have already been set. In conclusion, the beneficial effect of Azospirillum spp.