Research Project
Grant-in-Aid for Young Scientists (B)
Although microalgae accumulate triacylglycerol (TAG) in response to N-deficient (-N) conditions, the regulatory mechanisms are poorly understood. I identified a kinase, TAG accumulation regulator 1 (TAR1), which is a member of dual-specificity tyrosine-phosphorylation-regulated kinase family in a green alga, Chlamydomonas reinhardtii. Kinase domain of TAR1 demonstrated auto- and trans-phosphorylation activities. A tar1-1 mutant accumulated TAG to levels 0.1-fold of those of a wild-type strain in -N conditions. In -N conditions, tar1-1 maintained chlorophyll and photosynthetic activity. In -N conditions, global changes in expression levels of -N responsive genes in N assimilation and tetrapyrrole metabolism were noted between tar1-1 and wild-type cells. These results indicated that TAR1 is a regulator of TAG accumulation in -N conditions, and it functions in cell growth and repression of photosynthesis in -N conditions.
All 2015 2014 2013 Other
All Journal Article (6 results) (of which Peer Reviewed: 6 results, Open Access: 4 results, Acknowledgement Compliant: 1 results) Presentation (12 results) Remarks (1 results) Patent(Industrial Property Rights) (1 results)
PLoS ONE
Volume: 10 Issue: 3 Pages: e0120446-e0120446
10.1371/journal.pone.0120446
Phytochemistry
Volume: 107 Pages: 42-49
10.1016/j.phytochem.2014.08.008
Photosynth. Res.
Volume: 121 Issue: 2-3 Pages: 175-184
10.1007/s11120-014-9983-x
120005385881
Journal of Plant Research
Volume: 127 Issue: 1 Pages: 67-71
10.1007/s10265-013-0618-7
Volume: 127 Issue: 1 Pages: 57-66
10.1007/s10265-013-0616-9
Plant Cell Physiol.
Volume: 54(12) Issue: 12 Pages: 2011-2019
10.1093/pcp/pct136
http://kyouindb.iimc.kyoto-u.ac.jp/j/vE2bQ