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Chlorophyll to zeaxanthin energy transfer in nonphotochemical quenching: An exciton annihilation-free transient absorption study.

Proceedings of the National Academy of Sciences of the United States of America - 15 Oct 2024

Lee Tsung-Yen, Lam Lam, Patel-Tupper Dhruv, Roy Partha Pratim, Ma Sophia A, Lam Henry E, Lucas-DeMott Aviva, Karavolias Nicholas G, Iwai Masakazu, Niyogi Krishna K, Fleming Graham R

Abstract excerpt

Zeaxanthin (Zea) is a key component in the energy-dependent, rapidly reversible, nonphotochemical quenching process (qE) that regulates photosynthetic light harvesting. Previous transient absorption (TA) studies suggested that Zea can participate in direct quenching via chlorophyll (Chl) to Zea energy transfer. However, the contamination of intrinsic exciton-exciton annihilation (EEA) makes the assignment of TA...

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Chlorophyll
Energy Transfer
Mutation
Nicotiana
Photosynthesis

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PMID: 39378097
DOI: 10.1073/pnas.2411620121
PMCID: PMC11494355

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