Photosynthetic studies and compartmentation of ions in different tissues of Salicornia brachiata under saline conditions
1992
Reddy, M.P. | Sanish, S. | Iyengar, E.R.R. (Central Salt and Marine Chemicals Research Institute, Bhavnagar (India))
The seawater irrigation induced increase of biomass production, moisture content and succulence of Salicornia brachiata. Chlorophyll content in whole plant as well as in separated palisade mesophyll and photosynthetic 14C fixation increased in plants treated with seawater concentration up to 1545.71/m3 and declined at 1987.34/m3 seawater concentration. Photoreduction of 2,6-dichlorophenolindophenol and ferricyanide of isolated chloroplasts did not show significant variation in plants from various salinity treatments. However, the 14C fixation rate and photochemical activities decreased significantly when the same concentration of salts was added to the reaction medium of isolated chloroplasts. Compartmentation of ions was noticed in different tissues: the Na+ and Cl- concentrations were higher in spongy mesophyll cells than in palisade cells; on the other hand, the K+ concentration was higher in palisade cells than in the spongy mesophyll ones.
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