| 1 | Nitrate reductase activity in mangroves Attempt has been made to study nitrate reductase activity (NRA) in mangroves and some glycophytes. It is reported that Aegiceras corniculatum, a mangrove, and Sesuvium portulacastrum, a halophyte, show NRA in between C3 and C4 glycophytes Sesuvium shows higher NRA in all the three parts. This is atrributed to more chlorides in the tissue of plant as well as more nitrogen in the root zone of the plant. The plants were also grown under laboratory conditions and treated with chloride and sulphate salinities NRA increases tremendously with 10 mM NaCl and remains higher than the control upto 50 mM NaCl in Aegiceras and 100 mM in Sesuvium. Similar trend is observed with sulphate salinity. Though salinity increases NRA, it is inhibited in the toxic range. NRA does not show any differences due to the age of the plant as has been noted in the case of Aegiceras, where NRA is same at seedling stage and well grown up plant Source: Bhosale, L.J.; Shinde, L.S. Marine Plants: All India Symposium on Marine Plants, their Biology, Chemistry and Utilization, Dona Paula, Goa, October 30 - November 1, 1983. Krishnamurthy, V. ; Untawale, A.G. Eds. 1985; 299-306. 0267.
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