Interplay among photoreceptors determines the strategy of coping with excess light in tomato

Aida Shomali; Sasan Aliniaeifard; Yousef Yari Kamrani; Mahmoud Lotfi; Morteza Soleymani Aghdam; Anshu Rastogi; Marian Brestič

doi:10.1111/tpj.16685

Interplay among photoreceptors determines the strategy of coping with excess light in tomato

Plant J. 2024 Feb 25. doi: 10.1111/tpj.16685. Online ahead of print.

Authors

Aida Shomali¹, Sasan Aliniaeifard^{1

2}, Yousef Yari Kamrani³, Mahmoud Lotfi¹, Morteza Soleymani Aghdam⁴, Anshu Rastogi⁵, Marian Brestič⁶

Affiliations

¹ Photosynthesis Laboratory, Department of Horticulture, College of Aburaihan, University of Tehran, Tehran, Iran.
² Controlled Environment Agriculture Center (CEAC), College of Agriculture and Natural Resources, University of Tehran, Tehran, Iran.
³ Experimental Biophysics, Institute for Biology, Humboldt-University of Berlin, Invaliden Str. 42, 10115, Berlin, Germany.
⁴ Department of Horticultural Science, Imam Khomeini International University, Qazvin, Iran.
⁵ Laboratory of Bioclimatology, Department of Ecology and Environmental Protection, Faculty of Environmental Engineering and Mechanical Engineering, Poznan University of Life Sciences, Piątkowska 94, 60-649, Poznań, Poland.
⁶ Department of Plant Physiology, Faculty of Agrobiology and Food Resources, Slovak University of Agriculture, A. Hlinku 2, Nitra, 949 76, Slovak Republic.

PMID: 38402588
DOI: 10.1111/tpj.16685

Abstract

This study investigates photoreceptor's role in the adaption of photosynthetic apparatus to high light (HL) intensity by examining the response of tomato wild type (WT) (Solanum lycopersicum L. cv. Moneymaker) and tomato mutants (phyA, phyB1, phyB2, cry1) plants to HL. Our results showed a photoreceptor-dependent effect of HL on the maximum quantum yield of photosystem II (F_v /F_m ) with phyB1 exhibiting a decrease, while phyB2 exhibiting an increase in F_v /F_m . HL resulted in an increase in the efficient quantum yield of photosystem II (Φ_PSII ) and a decrease in the non-photochemical quantum yields (Φ_NPQ and Φ_N0 ) solely in phyA. Under HL, phyA showed a significant decrease in the energy-dependent quenching component of NPQ (q_E ), while phyB2 mutants showed an increase in the state transition (q_T ) component. Furthermore, ΔΔF_v /F_m revealed that PHYB1 compensates for the deficit of PHYA in phyA mutants. PHYA signaling likely emerges as the dominant effector of PHYB1 and PHYB2 signaling within the HL-induced signaling network. In addition, PHYB1 compensates for the role of CRY1 in regulating F_v /F_m in cry1 mutants. Overall, the results of this research provide valuable insights into the unique role of each photoreceptor and their interplay in balancing photon energy and photoprotection under HL condition.

Keywords: cryptochromes; electron transport; light signaling; non-photochemical quenching; photoinhibition; photoprotection; photoreceptors; photosynthesis; quantum yield; state transition; thermal dissipation.