Impact of UV-B irradiation on photosynthetic performance and chloroplast membrane components in Oryza sativa L
- PMID: 21696979
- DOI: 10.1016/j.jphotobiol.2011.05.004
Impact of UV-B irradiation on photosynthetic performance and chloroplast membrane components in Oryza sativa L
Abstract
The impact of UV-B radiation on photosynthetic related parameters was studied in Oryza sativa L. cv. Safari plants, after an UV-B irradiation performed 1h per day for 7days (between 8 and 14days after germination) with a ten narrow-band (λ 311nm) that resulted in a total biological effective UV-B (UVB(BE)) of 2.975kJm(-2)day(-1) and a total of 20.825kJm(-2). Gas exchange measurements were severely affected, showing reductions higher than 80% in net photosynthesis (P(n)), stomatal conductance and photosynthetic capacity (A(max)), 1day after the end of the 7-days UV-B treatment. Similarly, several fluorescence parameters (F(o), F(v)/F(m), Fv'/Fm', ϕ(e), q(P) and q(E)) and thylakoid electron transport (involving both photosystems) were also severely reduced. Concomitantly, a decline of xanthophylls, carotenes, Chl a, Chl (a+b) and Chl (a/b) values was accompanied by the increase of the lipoperoxidation level in chloroplast membranes, altogether reflecting a loss of protection against oxidative stress. Seven days after of the end of UV-B treatment, most fluorescence parameters recovered, but in P(n), A(max), thylakoid electron transport rates, Chl a and lipid classes, as well as the level of lipoperoxidation, the impacts were even stronger than immediately after the end of stress, denoting a clear loss of performance of photosynthetic structures. However, only a moderate impact on total lipids was observed, accompanied by some changes in the relative weight of the major chloroplast membrane lipid classes, with emphasis on the decrease of MGDG and the increase of phospholipids. That suggested an ability to de novo lipid synthesis allowing qualitative changes in the lipid matrix. Notably, the leaves developed after the end of UV-B irradiation showed a much lower impact, with significantly decreased values only in P(n) and g(s), rises in several fluorescence parameters, thylakoid electron transport, photosynthetic pigments (xanthophylls and chls) and DEPS, while lipid classes presented values close to control. The results showed a global impact of UV-B in the photosynthetic structures and performance in irradiated leaves, but revealed also a low impairment extent in the leaves entirely developed after the end of the irradiation, reflecting a remarkable recovery of the plant after the end of stress, what could constitute an advantage under occasional UV-B exposure events in this vital worldwide staple food crop.
Copyright © 2011 Elsevier B.V. All rights reserved.
Similar articles
-
Role of Lipids in Chloroplast Biogenesis.Subcell Biochem. 2016;86:103-25. doi: 10.1007/978-3-319-25979-6_5. Subcell Biochem. 2016. PMID: 27023233 Review.
-
Impact of increasing Ultraviolet-B (UV-B) radiation on photosynthetic processes.J Photochem Photobiol B. 2014 Aug;137:55-66. doi: 10.1016/j.jphotobiol.2014.02.004. Epub 2014 Feb 15. J Photochem Photobiol B. 2014. PMID: 24725638 Review.
-
Responses of photosynthetic properties and chloroplast ultrastructure of Bryum argenteum from a desert biological soil crust to elevated ultraviolet-B radiation.Physiol Plant. 2013 Apr;147(4):489-501. doi: 10.1111/j.1399-3054.2012.01679.x. Epub 2012 Sep 20. Physiol Plant. 2013. PMID: 22901234
-
Effects of (60)Co gamma radiation on thylakoid membrane functions in Anacystis nidulans.J Photochem Photobiol B. 2008 Apr 25;91(1):9-19. doi: 10.1016/j.jphotobiol.2008.01.006. Epub 2008 Jan 31. J Photochem Photobiol B. 2008. PMID: 18316199
-
Differential changes in photosynthetic capacity, 77 K chlorophyll fluorescence and chloroplast ultrastructure between Zn-efficient and Zn-inefficient rice genotypes (Oryza sativa) under low zinc stress.Physiol Plant. 2008 Jan;132(1):89-101. doi: 10.1111/j.1399-3054.2007.00992.x. Physiol Plant. 2008. PMID: 18251873
Cited by
-
Carotenoid Accumulation in the Rhododendron chrysanthum Is Mediated by Abscisic Acid Production Driven by UV-B Stress.Plants (Basel). 2024 Apr 9;13(8):1062. doi: 10.3390/plants13081062. Plants (Basel). 2024. PMID: 38674471 Free PMC article.
-
Potential Role of Phytochromes A and B and Cryptochrome 1 in the Adaptation of Solanum lycopersicum to UV-B Radiation.Int J Mol Sci. 2023 Aug 24;24(17):13142. doi: 10.3390/ijms241713142. Int J Mol Sci. 2023. PMID: 37685948 Free PMC article.
-
The Role of Reactive Oxygen Species in Plant Response to Radiation.Int J Mol Sci. 2023 Feb 8;24(4):3346. doi: 10.3390/ijms24043346. Int J Mol Sci. 2023. PMID: 36834758 Free PMC article. Review.
-
Ultraviolet radiation causes leaf warming due to partial stomatal closure.Hortic Res. 2022 Jan 19;9:uhab066. doi: 10.1093/hr/uhab066. Online ahead of print. Hortic Res. 2022. PMID: 35043163 Free PMC article.
-
Olive Varieties under UV-B Stress Show Distinct Responses in Terms of Antioxidant Machinery and Isoform/Activity of RubisCO.Int J Mol Sci. 2021 Oct 18;22(20):11214. doi: 10.3390/ijms222011214. Int J Mol Sci. 2021. PMID: 34681874 Free PMC article.
MeSH terms
Substances
LinkOut - more resources
Full Text Sources