Effect of foliar feeding on nitrogen assimilation in alfalfa plants at insufficient molybdenum supply.
The influence of foliar feeding on the nitrogen assimilation in alfalfa plants under conditions of Mo shortage was studied. It was established that foliar fertilization with 0.3% solution of Agroleaf® resulted in increase of nitrogen fixation and nitrogen assimilation in the absence of Mo. Insufficient molybdenum supply leads to significant reduction of plant Mo content and nitrogen-fixing activity, while stress induced amino acids as alanine, GABA, threonine, proline and serine increased repeatedly. The negative effect of Mo deficiency on the enzyme activities related to the primary nitrogen assimilation (NR, GS, GOGAT) and plant growth diminished due to the foliar absorbed nutrients.
Hristozkova
Marieta
M
Acad. M. Popov, Institute of Plant Physiology, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Building 21, Sofia 1113, Bulgaria.
Geneva
Maria
M
Stancheva
Ira
I
D000409:Alanine / Q000737:chemistry; D002851:Chromatography, High Pressure Liquid; D005308:Fertilizers; D000455:Medicago sativa / Q000378:metabolism* / Q000382:microbiology; D008954:Models, Biological; D008982:Molybdenum / Q000737:chemistry / Q000378:metabolism*; D009584:Nitrogen / Q000737:chemistry*; D009591:Nitrogenase / Q000737:chemistry; D018515:Plant Leaves / Q000378:metabolism*; D018521:Plant Physiological Phenomena; D015203:Reproducibility of Results; D020579:Sinorhizobium / Q000378:metabolism; D005680:gamma-Aminobutyric Acid / Q000737:chemistry
D005308:Fertilizers; D005680:gamma-Aminobutyric Acid; D008982:Molybdenum; D009591:Nitrogenase; D009584:Nitrogen; D000409:Alanine