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1. Influence of different irradiance on growth and photosynthetic characteristics in seedlings of Rhizophora species

Creator:
Kathiresan, K. and Moorthy, P.
Format:
print
Type:
model:internalpart and TEXT
Language:
Multiple languages
Description:
Seedlings of two species of Rhizophora {R. apiculaía and R. mucronala) were grown for 45 d under sun, shade, or dark in natural environment. The shade-grown plants showed optimum growth performance, efficient N03‘ utilization and photosynthetic characteristics (chlorophyli and carotenoid contents and their presence in pigment- protein complexes).
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

2. UV-B induced alterations in composition of thylakoid membrane and amino acids in leaves of Rhizophora apiculata Blume

Creator:
Moorthy, P. and Kathiresan, K.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
lipid peroxidation, mangrove, and saturated and unsaturated fatty acids
Language:
Multiple languages
Description:
Seedlings of Rhizophora apiculata were exposed to UV-B radiation at four doses equivalent to 10, 20, 30, and 40 % ozone depletion. The seedlings irradiated with high doses of UV-B had characteristic decline in contents of specific proteins with molecular masses of 33, 23, and 17 kDa. On the contrary, proteins of 55, 33, 25, 23, and 17 kDa were accumulated in the seedlings exposed to low doses of UV-B. The UV-B, in general, enhanced formation of saturated fatty acids and reduced unsaturated fatty acids, to a maximum extent of 88 and 26 %, respectively. The low dose of UV-B increased content of oleic acid by 9 %, and the high dose reduced it by 34 %. The high dose of UV-B enhanced the lipid peroxidation by 48 %, whereas the low dose of UV-B did not show any significant effect. The contents of amino acids such as aspartate, glutamate, asparagine, serine, glutamine, threonine, and histidine were increased in low UV-B doses by 53, 86, 142, 72, 3, 119, and 32 %, respectively; while in high doses they were reduced significantly. and P. Moorthy, K. Kathiresan.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public