Requirement of ONE-HELIX PROTEIN 1 (OHP1) in early Arabidopsis seedling development and under high light intensity. (2nd December 2018)

• Record Type: Journal Article
• Authors: Hey, Daniel; Grimm, Bernhard
• Is Part Of: Plant signaling & behavior. Volume 13:Number 12(2018)
• Publication Date: 2018-12-02
• Subjects: OHP1 -- one-helix protein -- Arabidopsis -- high light acclimation -- photosynthesis and repair of photosynthetic complexes under light stress; Plant ecophysiology -- Periodicals; Plant cellular signal transduction -- Periodicals; Plant cellular signal transduction; Plant ecophysiology; Periodicals; Electronic journals; 581
• DOI: 10.1080/15592324.2018.1550317
• Languages: English
• ISSNs: 1559-2316

Abstract

ABSTRACT: Plant ONE-HELIX PROTEINS (OHPs) are part of the light-harvesting complex superfamily whose members are involved in various processes related to sensing and capturing light as well as light protection. We recently showed the requirement of a functional OHP1-OHP2 heterodimer for efficient D1 synthesis. Interestingly, while the ohp1 knockout mutant showed a strong defect in accumulation of the photosystem II and is hardly viable, virus-induced gene silencing of OHP1 had no detectable impact on plant growth and performance under standard growth conditions. However, in vivo labeling assays with 35 S-methionine indicate a reduced D1 synthesis rate. Here, we show that VIGS-OHP1 plants are more susceptible towards elevated light intensities than control plants. This underlines an obligatory function of OHP1 for light acclimation.