Mechanism of far-red adaptation in alveolate algae studied by two-dimensional electronic spectroscopy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F25%3A43909955" target="_blank" >RIV/60076658:12310/25:43909955 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S2666386425002772?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2666386425002772?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.xcrp.2025.102678" target="_blank" >10.1016/j.xcrp.2025.102678</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Mechanism of far-red adaptation in alveolate algae studied by two-dimensional electronic spectroscopy

Popis výsledku v původním jazyce

There is a growing interest in understanding the diverse and still largely unknown mechanisms of far-red light adaptation used by photosynthetic systems, as this knowledge can have significant implications for enhancing photosynthetic yields. In this study, we employ two-dimensional electronic spectroscopy to investigate the primary light-harvesting complex from Chromera velia (CLH) and its far-red adapted oligomeric analog (FR-CLH), both of which lack resolved structural information. Our analysis reveals rapid relaxation in the far-red states of FR-CLH, typical of excitonic aggregates of chlorophylls. Following red band excitation, both samples display energy equilibration in 200 fs, followed by energy transfer to the far-red chlorophyll states in FR-CLH in 874 fs. By integrating these data with existing knowledge, we propose that excitonic interactions from oligomerization create far-red chlorophyll states in FR-CLH and discuss hypotheses regarding the pigment arrangement within the two antennas.

Název v anglickém jazyce

Mechanism of far-red adaptation in alveolate algae studied by two-dimensional electronic spectroscopy

Popis výsledku anglicky

There is a growing interest in understanding the diverse and still largely unknown mechanisms of far-red light adaptation used by photosynthetic systems, as this knowledge can have significant implications for enhancing photosynthetic yields. In this study, we employ two-dimensional electronic spectroscopy to investigate the primary light-harvesting complex from Chromera velia (CLH) and its far-red adapted oligomeric analog (FR-CLH), both of which lack resolved structural information. Our analysis reveals rapid relaxation in the far-red states of FR-CLH, typical of excitonic aggregates of chlorophylls. Following red band excitation, both samples display energy equilibration in 200 fs, followed by energy transfer to the far-red chlorophyll states in FR-CLH in 874 fs. By integrating these data with existing knowledge, we propose that excitonic interactions from oligomerization create far-red chlorophyll states in FR-CLH and discuss hypotheses regarding the pigment arrangement within the two antennas.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10610 - Biophysics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Cell Reports Physical Science

ISSN

—

e-ISSN

2666-3864

Svazek periodika

6

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

nestránkováno

Kód UT WoS článku

001534242900017

EID výsledku v databázi Scopus

2-s2.0-105009689827