why FE EDTA is essential for basal media pf ptc?
Answers
Answer:
Explanation:
When Fe-EDTA is used as an chelated source of Fe in a nutrient medium , after crossing the plasmalemmata of cortical cells of roots , migrating to symplasm into the cytoplasm , Fe-EDTA is subjected to metabolic breakdown , where a lot depends upon the pH and pCO2 . thereafter , the iron gets deposited into ferritin , a iron storage protein. In this process , there are involvement of two major enzymes , peroxidase and catalse . The response of root cells to application of Fe-EDTA is accompanied by formation of rhizodermal transfer cells, accumulation of reducing substances in the rhizodermis ,and enhanced proton efflux , faciliatating the uptake of iron to enter further into the cortical cells after crossing through plasmalemmata of root walls. There are many hypotheses about the chemistry of Fe-EDTA , some claim it is broken at soil-root interface , while others claim , the whole molecule is consumed by the presence of large number of iron transporters on the cell walls, which deliver the molecule to go through the same process