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ASSIMILATION OF MINERAL NUTRIENTS

ASSIMILATION OF MINERAL NUTRIENTS. NUTRIENT ASSIMILATION: THE INCORPORATION OF MINERAL NUTRIENTS INTO ORGANIC COMPOUNDS. ASSIMILATION OF SOME NUTRIENTS—PARTICULARLY NITROGEN AND SULFUR—REQUIRES A COMPLEX SERIES OF BIOCHEMICAL REACTIONS.

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ASSIMILATION OF MINERAL NUTRIENTS

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  1. ASSIMILATION OF MINERAL NUTRIENTS • NUTRIENT ASSIMILATION: THE INCORPORATION OF MINERAL NUTRIENTS INTO ORGANIC COMPOUNDS. • ASSIMILATION OF SOME NUTRIENTS—PARTICULARLY NITROGEN AND SULFUR—REQUIRES A COMPLEX SERIES OF BIOCHEMICAL REACTIONS. • ASSIMILATION OF OTHER NUTRIENTS INVOLVES THE FORMATION OF COMPLEXES WITH ORGANIC COMPOUNDS (e.g. Mg2+ ASSOCIATION WITH CHLOROPHYLL).

  2. AMMONIA TOXICITY

  3. NITRATE REDUCTASE REACTIONNO3- + NAD(P)H + H+ + 2e- NO2- + NAD(P)+ + H2O

  4. INDUCTION OF NITRATE REDUCTASE

  5. NITRITE REDUCTASE REACTIONNO2- + 6Fdred + 8H+ + 6e-NH4+ + 6Fdox + 2 H2O • PLANTS CAN ASSIMILATE NITRATE IN BOTH ROOTS AND SHOOTS

  6. FORMS OF NITROGEN IN XYLEM SAP

  7. CONVERSION OF AMMONIUM TO AMINO ACIDS REQUIRES TWO ENZYMES (GOGAT) (GS)

  8. GDH PATHWAY

  9. ASPARTATE FORMATION - TRANSAMINATION

  10. ASPARAGINE SYNTHESIS

  11. SUMMARY OF PROCESSES INVOLVED IN ASSIMILATION OF MINERAL NITROGEN (Leaf) “Photoassimilation”

  12. BIOLOGICAL NITROGEN FIXATION

  13. ANABAENA (CYANOBACTERIUM)

  14. SOYBEAN ROOT NODULES

  15. Development of infection thread

  16. Root Nodule Development Isoflavonoids, betaines Leghemoglobin

  17. NOD FACTORS PRODUCED BY BACTERIA ACT AS SIGNALS FOR SYMBIOSIS NOD FACTORS ARE LIPOCHITIN OLIGOSACCHARIDES

  18. THE NITROGENASE REACTION(oxygen-sensitive) N2 + 8 e- + 8 H+ + 16 ATP  2 NH3 + H2 + 16 ADP + 16 Pi

  19. AMIDES (ASPARAGINE AND GLUTAMINE) AND UREIDES ARE THE TRANSPORTED FORMS OF NITROGEN IN LEGUMES UREIDES

  20. EXAMPLES OF COORDINATION COMPLEXES

  21. ELECTROSTATIC IONIC COMPLEXES

  22. FERROCHELATASE REACTION

  23. EXAMPLES OF OXYGENASE REACTIONS IN PLANTS

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