Abstract
Abstract
Main conclusion
In accordance with a key role of WHIRLY1 in light-acclimation mechanisms, typical features of acclimation to high light, including photosynthesis and leaf morphology, are compromised in WHIRLY1 deficient plants.
Abstract
Acclimation to the environment requires efficient communication between chloroplasts and the nucleus. Previous studies indicated that the plastid-nucleus located WHIRLY1 protein is required for the communication between plastids and the nucleus in situations of high light exposure. To investigate the consequences of WHIRLY1 deficiency on the light acclimation of photosynthesis and leaf anatomy, transgenic barley plants with an RNAi-mediated knockdown of HvWHIRLY1 were compared to wild-type plants when growing at low and high irradiance. While wild-type plants showed the typical light acclimation responses, i.e. higher photosynthetic capacity and thicker leaves, the WHIRLY1 deficient plants were not able to respond to differences in irradiance. The results revealed a systemic role of WHIRLY1 in light acclimation by coordinating responses at the level of the chloroplast and the level of leaf morphology.
Funder
Christian-Albrechts-Universität zu Kiel
Publisher
Springer Science and Business Media LLC
Reference65 articles.
1. Allen JF, de Paula WBM, Puthiyaveetil S, Nield J (2011) A structural phylogenetic map for chloroplast photosynthesis. Trends Plant Sci 16:645–655. https://doi.org/10.1016/j.tplants.2011.10.004
2. Anderson JM, Chow WS, Park YI (1995) The grand design of photosynthesis: Acclimation of the photosynthetic apparatus to environmental cues. Photosynth Res 46:129–139. https://doi.org/10.1007/BF00020423
3. Athanasiou K, Dyson BC, Webster RE, Johnson GN (2010) Dynamic acclimation of photosynthesis increases plant fitness in changing environments. Plant Physiol 152:366–373. https://doi.org/10.1104/pp.109.149351
4. Björkman O (1981) Responses to different quantum flux densities. In: Lange OL, Nobel PS, Osmond CB, Ziegler H (eds) Physiological plant ecology. encyclopedia of plant physiology (new series), vol. 12/A. Springer, Berlin. https://doi.org/10.1007/978-3-642-68090-8_4
5. Boardman NK, Björkman O, Anderson JM, Goodchild DJ, Thorne SW (1975) Photosynthetic adaptation of higher plants to light intensity: relationship between chloroplast structure, composition of the photosystems and photosynthetic rates. In: Avron M (ed) Proceedings of the 3rd international congress on photosynthesis, vol. 3. Elsevier Amsterdam, p 1809–1823
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