Element | Form of uptake | Notes |
Nitrogen | NO3−, NH4+ | Nucleic acids, proteins, hormones, etc. |
Oxygen | O2 H2O | Cellulose, starch, other organic compounds |
Carbon | CO2 | Cellulose, starch, other organic compounds |
Hydrogen | H2O | Cellulose, starch, other organic compounds |
Potassium | K+ | Cofactor in protein synthesis, water balance, etc. |
Calcium | Ca2+ | Membrane synthesis and stabilization |
Magnesium | Mg2+ | Element essential for chlorophyll |
Phosphorus | H2PO4− | Nucleic acids, phospholipids, ATP |
Sulfur | SO42− | Constituent of proteins |
Element | Form of uptake | Notes |
Chlorine | Cl− | Photosystem II and stomata function |
Iron | Fe2+, Fe3+ | Chlorophyll formation and nitrogen fixation |
Boron | HBO3 | Crosslinking pectin |
Manganese | Mn2+ | Activity of some enzymes and photosystem II |
Zinc | Zn2+ | Involved in the synthesis of enzymes and chlorophyll |
Copper | Cu+ | Enzymes for lignin synthesis |
Molybdenum | MoO42− | Nitrogen fixation, reduction of nitrates |
Nickel | Ni2+ | Enzymatic cofactor in the metabolism of nitrogen compounds |