Christoph F Beck
Affiliation: University of Freiburg
- Signaling pathways from the chloroplast to the nucleusChristoph F Beck
Institute of Biology III, University of Freiburg, Schaenzlestrasse 1, 79104, Freiburg, Germany
Planta 222:743-56. 2005..Mutants defective in various steps of photosynthesis reveal a surprising diversity in nuclear responses suggesting the existence of a complex signaling network...
- Involvement of tetrapyrroles in inter-organellar signaling in plants and algaeZinaida Vasileuskaya
Institut fuer Biologie III, Albert Ludwigs Universitaet, Schaenzlestrasse 1, 79104, Freiburg, Germany
Photosynth Res 82:289-99. 2004....
- Identification of a plastid response element that acts as an enhancer within the Chlamydomonas HSP70A promoterErika D von Gromoff
Institut fur Biologie III, Lehrstuhl Biochemie der Pflanzen, Universitat Freiburg, Schaenzlestrasse 1 D 79104, Freiburg, Germany
Nucleic Acids Res 34:4767-79. 2006..This cis-acting sequence element is employed for induction of HSP70A by both MgProto and light, lending support to the model that light induction of this gene is mediated via MgProto...
- Chlorophyll-deficient mutants of Chlamydomonas reinhardtii that accumulate magnesium protoporphyrin IXLinda Meinecke
Fakultaet fuer Biologie, Institut fuer Biologie III, Universitaet Freiburg, Schaenzlestrasse 1, 79104, Freiburg, Germany
Plant Mol Biol 72:643-58. 2010....
- Photosynthetic electron flow affects H2O2 signaling by inactivation of catalase in Chlamydomonas reinhardtiiNing Shao
Fakultat fur Biologie, Institut fur Biologie III, Universitat Freiburg, Freiburg, Germany
Planta 228:1055-66. 2008..This down-regulation apparently is necessary to maintain a certain level of H(2)O(2) required to activate H(2)O(2)-dependent signaling pathways...
- Mg-protoporphyrin IX and heme control HEMA, the gene encoding the first specific step of tetrapyrrole biosynthesis, in Chlamydomonas reinhardtiiZinaida Vasileuskaya
University of Freiburg, Institute of Biology III, Schaenzlestrasse 1, D 79104 Freiburg, Germany
Eukaryot Cell 4:1620-8. 2005..Since MgProto is synthesized exclusively in plastids and heme is synthesized in plastids and mitochondria, the data suggest a role of these compounds as organellar signals that control expression of the nuclear HEMA gene...
- A reporter system for the individual detection of hydrogen peroxide and singlet oxygen: its use for the assay of reactive oxygen species produced in vivoNing Shao
Faculty of Biology, Institute of Biology III, University of Freiburg, Schaenzlestrasse 1, D 79104 Freiburg, Germany
Plant J 50:475-87. 2007..This system thus makes it possible to test whether, under varying environmental conditions including the application of abiotic stress, hydrogen peroxide or singlet oxygen or both are produced...
- Heme, a plastid-derived regulator of nuclear gene expression in ChlamydomonasErika D von Gromoff
Fakultat fur Biologie, Institut fur Biologie III, Universitat Freiburg, D 79104 Freiburg, Germany
Plant Cell 20:552-67. 2008..We propose that Mg-protoporphyrin IX and heme may serve as plastid signals that regulate the expression of nuclear genes...
- Defects in the cytochrome b6/f complex prevent light-induced expression of nuclear genes involved in chlorophyll biosynthesisNing Shao
Institut fuer Biologie III, Universitaet Freiburg, D 79104 Freiburg, Germany
Plant Physiol 141:1128-37. 2006....
- Hemin and magnesium-protoporphyrin IX induce global changes in gene expression in Chlamydomonas reinhardtiiBjörn Voss
Faculty of Biology, Institute of Biology III, University of Freiburg, D 79104 Freiburg, Germany
Plant Physiol 155:892-905. 2011..This and the transient nature of changes in gene expression suggest a signaling role of both tetrapyrroles as secondary messengers for adaptive responses affecting the entire cell and not only organellar proteins...
- Sequence elements within an HSP70 promoter counteract transcriptional transgene silencing in ChlamydomonasMichael Schroda
Institut de Biologie Physico Chimique UPR 1261, 13, rue Pierre et Marie Curie, 75005 Paris, France
Plant J 31:445-55. 2002..The second element is independent of the first and is located to the region from - 754 to - 197. Its activity is spacing-independent and additive to the first element...
- Localization of the blue-light receptor phototropin to the flagella of the green alga Chlamydomonas reinhardtiiKaiyao Huang
Institut fur Biologie III, Universitat Freiburg, D 79104 Freiburg, Germany
Mol Biol Cell 15:3605-14. 2004..The blue-light receptor thus seems to be an integral constituent of the flagella of this green alga, extending the list of organisms that harbor sensory molecules within this organelle to unicellular algae...
- Exploring the electron transfer pathways in photosystem I by high-time-resolution electron paramagnetic resonance: observation of the B-side radical pair P700(+)A1B(-) in whole cells of the deuterated green alga Chlamydomonas reinhardtii at cryogenic tempThomas Berthold
Department of Physical Chemistry, University of Freiburg, Freiburg, Germany
J Am Chem Soc 134:5563-76. 2012..Thus, the present study sheds new light on the orientation of the phylloquinone acceptors in their binding pockets in PS I and the effect this has on function...
- Knock-out of a putative transporter results in altered blue-light signalling in ChlamydomonasGregory Dame
Institut fur Biologie III, Universitat Freiburg, Schaenzlestrasse 1, D 79104 Freiburg, Germany
Plant J 31:577-87. 2002..Shutting off this transporter may be required for the activation of signal flux in this pathway. This concept is supported by the observed reduction in LRG6 mRNA levels during the first phase of gametic differentiation...
- Phototropin is the blue-light receptor that controls multiple steps in the sexual life cycle of the green alga Chlamydomonas reinhardtiiKaiyao Huang
Institute of Biology III, University of Freiburg, Schaenzlestrasse 1, Germany
Proc Natl Acad Sci U S A 100:6269-74. 2003..These observations suggest that phototropin is the principal sensory molecule used by this alga for the control of its life cycle by light...
- Mating-induced shedding of cell walls, removal of walls from vegetative cells, and osmotic stress induce presumed cell wall genes in ChlamydomonasXenia Katharina Hoffmann
Institute of Biology III, Albert Ludwigs University, Freiburg, Germany
Plant Physiol 139:999-1014. 2005..Also under such conditions an activation of the genes was observed, suggesting that the signaling pathway(s) is (are) activated by wall removal itself...
- Phototropin involvement in the expression of genes encoding chlorophyll and carotenoid biosynthesis enzymes and LHC apoproteins in Chlamydomonas reinhardtiiChung Soon Im
Department of Plant Biology, Carnegie Institution, Stanford, CA 94306, USA
Plant J 48:1-16. 2006....
- Phototropin plays a crucial role in controlling changes in chemotaxis during the initial phase of the sexual life cycle in ChlamydomonasElena V Ermilova
Laboratory of Microbiology, Biological Research Institute of St Petersburg University, Oranienbaumskoe schosse 2, Stary Peterhof, 198504, Russia
Planta 219:420-7. 2004....