scholarly journals Lack of FIBRILLIN6 in Arabidopsis thaliana affects light acclimation and sulfate metabolism

2019 ◽  
Vol 225 (4) ◽  
pp. 1715-1731
Author(s):  
Kwanuk Lee ◽  
Martin Lehmann ◽  
Melanie V. Paul ◽  
Liangsheng Wang ◽  
Manja Luckner ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Light Acclimation ◽  
Sulfate Metabolism

scholarly journals Dissecting and modeling zeaxanthin- and lutein-dependent nonphotochemical quenching in Arabidopsis thaliana

2017 ◽  
Vol 114 (33) ◽  
pp. E7009-E7017 ◽  
Author(s):  
Michelle Leuenberger ◽  
Jonathan M. Morris ◽  
Arnold M. Chan ◽  
Lauriebeth Leonelli ◽  
Krishna K. Niyogi ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Light Intensity ◽  
Vascular Plants ◽  
Single Photon ◽  
Photon Counting ◽  
Nonphotochemical Quenching ◽  
Light Acclimation ◽  
Single Photon Counting ◽  
Photosynthetic Organisms ◽  
Psbs Protein

Photosynthetic organisms use various photoprotective mechanisms to dissipate excess photoexcitation as heat in a process called nonphotochemical quenching (NPQ). Regulation of NPQ allows for a rapid response to changes in light intensity and in vascular plants, is primarily triggered by a pH gradient across the thylakoid membrane (∆pH). The response is mediated by the PsbS protein and various xanthophylls. Time-correlated single-photon counting (TCSPC) measurements were performed on Arabidopsis thaliana to quantify the dependence of the response of NPQ to changes in light intensity on the presence and accumulation of zeaxanthin and lutein. Measurements were performed on WT and mutant plants deficient in one or both of the xanthophylls as well as a transgenic line that accumulates lutein via an engineered lutein epoxide cycle. Changes in the response of NPQ to light acclimation in WT and mutant plants were observed between two successive light acclimation cycles, suggesting that the character of the rapid and reversible response of NPQ in fully dark-acclimated plants is substantially different from in conditions plants are likely to experience caused by changes in light intensity during daylight. Mathematical models of the response of zeaxanthin- and lutein-dependent reversible NPQ were constructed that accurately describe the observed differences between the light acclimation periods. Finally, the WT response of NPQ was reconstructed from isolated components present in mutant plants with a single common scaling factor, which enabled deconvolution of the relative contributions of zeaxanthin- and lutein-dependent NPQ.

scholarly journals The phospholipid-deficient pho1 mutant of Arabidopsis thaliana is affected in the organization, but not in the light acclimation, of the thylakoid membrane

1998 ◽  
Vol 1415 (1) ◽  
pp. 205-218 ◽  
Author(s):  
Heiko Härtel ◽  
Bernd Essigmann ◽  
Heiko Lokstein ◽  
Susanne Hoffmann-Benning ◽  
Michaele Peters-Kottig ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Thylakoid Membrane ◽  
Light Acclimation

scholarly journals High-light vs. low-light: Effect of light acclimation on photosystem II composition and organization in Arabidopsis thaliana

2013 ◽  
Vol 1827 (3) ◽  
pp. 411-419 ◽  
Author(s):  
Roman Kouřil ◽  
Emilie Wientjes ◽  
Jelle B. Bultema ◽  
Roberta Croce ◽  
Egbert J. Boekema
Keyword(s):  
Arabidopsis Thaliana ◽  
Photosystem Ii ◽  
High Light ◽  
Light Acclimation ◽  
Light Effect ◽  
Low Light ◽  
Effect Of Light
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