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Photosynthetic acclimation to light gradients in plant stands comes out of shade
| Content Provider | Scilit |
|---|---|
| Author | Dietzel, Lars Pfannschmidt, Thomas |
| Copyright Year | 2008 |
| Description | Dense plant populations or canopies exhibit a strong enrichment in far-red wavelengths which leads to unequal excitation of the two photosystems. In the long-term plants acclimate to changes in light quality by adjusting photosystem stoichiometry and antenna structure, a mechanism called here long-term response (LTR). Using an artificial light system it is possible to mimic such naturally occurring gradients in light quality under controlled laboratory conditions. By this means we recently demonstrated that the LTR is crucial for plant fitness and survival of Arabidopsis. We could also demonstrate that the chlorophyll fluorescence parameter Fs/Fm is a genuine non-invasive functional indicator for acclimatory changes during the LTR. Here we give supportive data that the Fs/Fm can be also used to monitor the LTR in field experiments in which Arabidopsis plants were grown either under canopies or wavelength-neutral shade. Furthermore our data support the notion that acclimation responses to light quality and light quantity are separate mechanisms. Thus, the long-term response to light quality represents an important and distinct acclimation strategy for improving plant survival under changing light quality conditions. Addendum to: Wagner R, Dietzel L, Bräutigam K, Fischer W, Pfannschmidt T. The long-term response to fluctuating light quality is an important and distinct light acclimation mechanism that supports survival of Arabidopsis thaliana under low light conditions. Planta 2008; 228:573-587 (DOI 10.1007/s00425-008-0760-y). |
| Related Links | https://www.tandfonline.com/doi/pdf/10.4161/psb.3.12.7038?needAccess=true https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2634473/pdf |
| Ending Page | 1118 |
| Page Count | 3 |
| Starting Page | 1116 |
| e-ISSN | 15592324 |
| DOI | 10.4161/psb.3.12.7038 |
| Journal | Plant signaling & behavior |
| Issue Number | 12 |
| Volume Number | 3 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 2008-12-01 |
| Access Restriction | Open |
| Subject Keyword | Plant Sciences Arabidopsis Light Quality Long-term Responses Photosynthetic Acclimation Plant Fitness Redox Control |
| Content Type | Text |
| Resource Type | Article |
