Journal
ANNUAL REVIEW OF PLANT BIOLOGY
Volume 60, Issue -, Pages 239-260Publisher
ANNUAL REVIEWS
DOI: 10.1146/annurev.arplant.58.032806.103844
Keywords
chloroplast; photoreceptor; photosynthesis; reactive oxygen species; redox regulation; retrograde signaling
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Funding
- Office of Basic Energy Sciences, Chemical Sciences Division, U.S. Department of Energy [DE-AC03-76SF000098]
- National Institutes of Health [GM071908]
- NATIONAL INSTITUTE OF GENERAL MEDICAL SCIENCES [R01GM071908] Funding Source: NIH RePORTER
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Plants and algae often absorb too much light-more than they can actually use in photosynthesis. To prevent photo-oxidative damage and to acclimate to changes in their environment, photosynthetic organisms have evolved direct and indirect mechanisms for sensing and responding to excess light. Photoreceptors such as phototropin, neochrome, and cryptochrome can sense excess light directly and relay signals for chloroplast movement and gene expression responses. Indirect sensing of excess light through biochemical and metabolic signals can be transduced into local responses within chloroplasts, into changes in nuclear gene expression via retrograde signaling path ways, or even into systemic responses, all of which are associated with photoacclimation.
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