Long-term acclimation of barley photosynthetic apparatus to narrow-band red and blue light
- 99 Downloads
Chloroplasts of barley plants grown under red light (RL, 660 nm) dramatically differed from the chloroplasts of plants raised under blue light (BL, 450 nm) or control plants (white light). The chloroplasts under RL had an extensive membrane system with high stacking degree and disordered irregular shaped stacks (shaggy-formed grana). After 5 h in darkness, dynamic rearrangements of chloroplast architecture in RL- and especially BL-grown plants were restricted compared with control plants. The light spectral quality affected the content and proportions of photosynthetic pigments. The leaves of RL-grown plants had the increased ratio of low-temperature fluorescence bands, F741/F683, corresponding to emission of PSI and PSII, respectively. This increase can be related to specific architecture of chloroplasts in RL-treated plants, providing close spacing between the two photosystems, which enhances energy transfer from PSII to PSI and facilitates the movement of LHCII toward PSI.
Additional key wordsLED electron microscopy spectrofluorimetry spillover
Unable to display preview. Download preview PDF.
- Bennett J.: Biosynthesis of the light-harvesting chlorophyll a/b protein. Polypeptide turnover in darkness. — Cur. J. Biochem. 118: 61–70, 1981.Google Scholar
- Benson S.L., Maheswaran P., Ware M.A. et al.: An intact light harvesting complex I antenna system is required for complete state transitions in Arabidopsis. — Nat. Plants 176: 1–9, 2015.Google Scholar
- Butler W.L.: Chlorophyll fluorescence: A probe for electron transfer and energy transfer.–In: Trebst A., Avron M. (ed.): Encyclopedia of Plant Physiology. New Series. 5. Pp. 149–167. Springer, Heidelberg 1977.Google Scholar
- Chekunova E.M., Savelieva N.V.: [LTS3 gene controls lightindependent chlorophyll biosynthesis in green algae Chlamydomonas reinhardtii.]–Ekol. Gen. 8: 35–44, 2010. [In Russian]Google Scholar
- Galka P., Santabarbara S., Khuong T.T.H. et al.: Functional analyses of the plant photosystem I–light-harvesting complex II supercomplex reveal that light-harvesting complex II loosely bound to photosystem II is a very efficient antenna for photosystem I in state II. — Plant Cell 24: 2963–2978, 2012.CrossRefPubMedPubMedCentralGoogle Scholar
- Lichtenthaler H.K., Burkart S.: Photosynthesis and high light stress. — Bulg. J. Plant Physiol. 25: 3–16, 1999.Google Scholar
- Liu X.Y., Guo S.R., Xu Z.G. et al.: Regulation of chloroplast ultrastructure, cross-section anatomy of leaves, and morphology of stomata of cherry tomato by different light irradiations of light-emitting diodes. — HortScience 46: 217–221, 2011.Google Scholar
- Liu X., Guo S., Chang T. et al.: Regulation of the growth and photosynthesis of cherry tomato seedlings by different light irradiations of light emitting diodes (LED). — Afr. J. Biotechnol. 11: 6169–6177, 2012.Google Scholar
- Tanaka R, Tanaka A.: Chlorophyll b is not just an accessory pigment but a regulator of the photosynthetic antenna. — Porphyrins 9: 240–245, 2000.Google Scholar
- Vlasova M.P., Osipova O.P.: [Effect of light intensity on fine structure of the chloroplasts in Vicia faba plants.]–Fiziol. Rast. 20: 742–746, 1973. [In Russian]Google Scholar
- Weakley B.S.: A Beginner’s Handbook in Biological Electron Microscopy. Pp. 228. Churchill Livingstone, Edinburg and London 1972.Google Scholar