Combined high light and salt stress enhances accumulation of PsbS and zeaxanthin in Chlamydomonas reinhardtii.

Hemker, Fritz; Zielasek, Fabian; Jahns, Peter

Hemker, Fritz; Zielasek, Fabian; Jahns, Peter.

Afiliación

Hemker F; Photosynthesis and Stress Physiology of Plants, Heinrich Heine University Düsseldorf, Düsseldorf, Germany.
Zielasek F; Photosynthesis and Stress Physiology of Plants, Heinrich Heine University Düsseldorf, Düsseldorf, Germany.
Jahns P; Photosynthesis and Stress Physiology of Plants, Heinrich Heine University Düsseldorf, Düsseldorf, Germany.

Physiol Plant ; 176(2): e14233, 2024.

Article en En | MEDLINE | ID: mdl-38433102

ABSTRACT

ABSTRACT

The performance and acclimation strategies of Chlamydomonas reinhardtii under stress conditions are typically studied in response to single stress factors. Under natural conditions, however, organisms rarely face only one stressor at a time. Here, we investigated the impact of combined salt and high light stress on the photoprotective response of C. reinhardtii. Compared to the single stress factors, the combination of both stressors decreased the photosynthetic performance, while the activation of energy dissipation remained unaffected. However, the PsbS protein was strongly accumulated and the conversion of violaxanthin to zeaxanthin was enhanced. These results support an important photoprotective function of PsbS and zeaxanthin independently of energy dissipation under combined salt and high light stress in C. reinhardtii.

Asunto(s)

Chlamydomonas reinhardtii; Zeaxantinas; Estrés Salino; Aclimatación; Fotosíntesis

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Chlamydomonas reinhardtii Idioma: En Revista: Physiol Plant Año: 2024 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Dinamarca

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