CC-4100 npq1 [Niyogi 73.44]
$30.00
From Krishna Niyogi, UC Berkeley, July 2006
Phenotype: carotenoid deficient
The npq1 mutant has normal levels of violaxanthin but cannot convert violaxanthin to antheraxanthin and zeaxanthin during exposure to excessive light, suggesting a defect in the enzyme violaxanthin de-epoxidase. Anwaruzzaman et al. mapped the NPQ1 locus to linkage group IV, between BLD1 and COX3. At the time, no Chlamydomonas homolog of the plant VDE gene had been identified. Subsequently this gene was found, but it is on chromosome 2, inconsistent with these mapping results.
Niyogi KK, Bjorkman O, Grossman AR (1997) Chlamydomonas Xanthophyll Cycle Mutants Identified by Video Imaging of Chlorophyll Fluorescence Quenching. Plant Cell 9:1369-1380
Anwaruzzaman M, Chin BL, Li XP, Lohr M, Martinez DA, Niyogi KK (2004) Genomic analysis of mutants affecting xanthophyll biosynthesis and regulation of photosynthetic light harvesting in Chlamydomonas reinhardtii. Photosynth Res 82:265-276