The significance of chloroplast NAD(P)H dehydrogenase complex and its dependent cyclic electron transport in photosynthesis

Abstract

Chloroplast NAD(P)H dehydrogenase (NDH) complex, a multiple-subunit complex in the thylakoid membranes mediating cyclic electron transport, is one of the most important alternative electron transport pathways. It was identified to be essential for plant growth and development during stress periods in recent years. The NDH-mediated cyclic electron transport can restore the over-reduction in stroma, maintaining the balance of the redox system in the electron transfer chain and providing the extra ATP needed for the other biochemical reactions. In this review, we discuss the research history and the subunit composition of NDH. Specifically, the formation and significance of NDHmediated cyclic electron transport are discussed from the perspective of plant evolution and physiological functionality of NDH facilitating plants’ adaptation to environmental stress. A better understanding of the NDH-mediated cyclic electron transport during photosynthesis may offer new approaches to improving crop yield.

Keywords

chloroplast; NAD(P)H; Dehydrogenase complex; Photosynthesis; Cyclic electron transport

Published in

Frontiers in Plant Science
2021, volume: 12, article number: 661863

SLU Authors

• Yong, Jean W.H

  • Department of Biosystems and Technology, Swedish University of Agricultural Sciences
    
  • University of Western Australia

UKÄ Subject classification

Biochemistry and Molecular Biology
Horticulture
Botany

Publication identifier

• DOI: https://doi.org/10.3389/fpls.2021.661863

Permanent link to this page (URI)

https://res.slu.se/id/publ/111141