Comparative Analysis of Photosynthetic Activity and PSII Protein Profiles of Some Plants Grown under Enhanced Solar UV-B Radiation
Year: 2018
Type: article
Abstract: The deleterious effects of ultraviolet B (UV-B) radiation on photosynthesis and photosynthetic proteins of tropical and temperate plants have been studied.Like tropical plants (black gram and green gram), the temperate plants (carrot and radish) also successfully grown in the tropical region.They were exposed to enhanced UV-B radiation under field condition.Comparative studies show that under enhanced UV-B radiation photosynthetic activity was increased in black gram.In green gram and radish the UV-B radiation slightly enhanced the photosynthetic activity, but it inhibited the photosynthetic activity in carrot.The comparative results showed changes in contents of thylakoid 55, 47, 43, 33, 29, 27-25, 23 and 17 kDa polypeptides that were significantly lowered in UV-B treated carrot plant when compared to other plants.The PSII protein profile results showed a strong correlation between the presence of a membrane polypeptide and photosynthetic activity.In black gram and green gram the UV-B radiation did not produce any significant difference in the PSII polypeptides.As in the case of radish the UV-B radiation increased the accumulation of 33-28 kDa protein and affected expression of the 63 kDa protein.In the case of carrot, severe degradation of 32 kDa and 33 kDa, corresponding to D1 and D2 core proteins of PSII, was observed.It could be concluded that the ability of plants to tolerate increased levels of UV-B radiation, relative to photosynthetic capacity, depends on acclimation processes of the plant in the growing region.
Institution: University of Madras
Language: English
Subfield: Molecular Biology
Domain: Life Sciences
SDG: Zero hunger
Open Access status: hybrid
OpenAlex ID: W2913817842