Sammanfattning

The cyclic electron transport (CET), after the linear electron transport (LET), is another important electron transport pathway during the light reactions of photosynthesis. The proton gradient regulation 5 (PGR5)/PRG5-like photosynthetic phenotype 1 (PGRL1) and the NADH dehydrogenase-like complex pathways are linked to the CET. Recently, the regulation of CET around photosystem I (PSI) has been recognized as crucial for photosynthesis and plant growth. Here, we summarized the main biochemical processes of the PGR5/PGRL1-dependent CET pathway and its physiological significance in protecting the photosystem II and PSI, ATP/NADPH ratio maintenance, and regulating the transitions between LET and CET in order to optimize photosynthesis when encountering unfavorable conditions. A better understanding of the PGR5/PGRL1- mediated CET during photosynthesis might provide novel strategies for improving crop yield in a world facing more extreme weather events with multiple stresses affecting the plants.

Nyckelord

photosynthesis; cyclic electron transport; proton gradient regulation 5; PRG5-like photosynthetic phenotype 1; photoinhibition

Publicerad i

Frontiers in Plant Science
2021, Volym: 12, artikelnummer: 702196

SLU författare

• Yong, Jean W.H

  • Institutionen för biosystem och teknologi, Sveriges lantbruksuniversitet
    
  • University of Western Australia

Globala målen

Vidta omedelbara åtgärder för att bekämpa klimatförändringarna och dess konsekvenser
Avskaffa hunger, uppnå tryggad livsmedelsförsörjning och förbättrad nutrition samt främja ett hållbart jordbruk


UKÄ forskningsämne

Biokemi och molekylärbiologi
Botanik
Trädgårdsvetenskap/hortikultur


Publikationens identifierare

DOI: https://doi.org/10.3389/fpls.2021.702196

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/112704