Additional far-red light improves the growth and resistance of the photosynthetic apparatus of Lactuca sativa L. to high-intensity light
The effects of additional far-red light (FRL) on the growth parameters, photosynthetic activity, and pro- or antioxidant balance of <i>Lactuca sativa</i> L. plants grown for 30 d were studied. The plants were grown under white light-emitting diodes with equal PAR intensities at red/far-red light ratios of 0.29, 0.89, and 1.67 and without FRL. Compared to the absence of the FRL, growth at a 0.29 ratio caused an increase in plant biomass and leaf area, but a decrease in PSII activity, net photosynthetic rate (<i>P</i> <sub>N</sub>) per unit area, and stomatal conductance. High irradiance for 4 h at 1,000 μmol(photon) m<sup>-2</sup> s<sup>-1</sup> decreased PSII activity and <i>P</i> <sub>N</sub>, but to the least extent in the 0.89 option. The possible pathways of the FRL's impact on the photosynthetic apparatus were analysed.
Authors
- Vladimir D. Kreslavski (ORCID: https://orcid.org/0000-0002-6789-5721)
- Alexandra Khudyakova (ORCID: https://orcid.org/0000-0001-8548-2261)
- Pavel Pashkovskiy (ORCID: https://orcid.org/0000-0001-9945-5504)
- Valeria V. Strokina (ORCID: https://orcid.org/0000-0003-3899-7355)
- Suleyman I. Allakhverdiev (ORCID: https://orcid.org/0000-0002-0452-232X)
- А. А. Иванов (ORCID: https://orcid.org/0000-0002-6002-7868)
- Anatoliy Kosobryukhov
- Aleksandr N. Shmarev
Institutions
- Bahçeşehir University (TR)
- Institute of Basic Biological Problems (RU)
- Timiryazev Institute of Plant Physiology (RU)
Publication Details
- Journal
- Photosynthetica
- Published
- 2025-11-04
- DOI
- https://doi.org/10.32615/ps.2025.032
- Primary Topic
- Light effects on plants
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Russian Science Foundation
- Ministry of Science and Higher Education of the Russian Federation