| Literature DB >> 12849695 |
L Nayak1, B Biswal, N K Ramaswamy, R K Iyer, J S Nair, U C Biswal.
Abstract
Ultraviolet-A (UV-A) radiation induced changes in photosystem II (PS II) of senescing leaves of wheat seedlings were investigated. UV-A radiation did not show any significant effect on the level of photosynthetic pigments. However, the decline in F(v)/F(m) and oxygen evolution rate indicated the damaging effect of the radiation on primary photochemistry of PS II. Modification at the Q(B)-binding site was inferred from the observed downshift of peak temperature of thermoluminescence (TL) B-bands. The UV-A induced changes in PS II of chloroplasts from senescing leaves were found to be synergistically accelerated by high growth temperature.Entities:
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Year: 2003 PMID： 12849695 DOI： 10.1016/s1011-1344(03)00052-6
Source DB: PubMed Journal: J Photochem Photobiol B ISSN： 1011-1344 Impact factor: 6.252