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- Title
Regulation of Two Photosynthetic Pigment-related Genes During Stress-induced Pigment Formation in the Green Alga, Dunaliella salina.
- Authors
Sánchez-Estudillo, Leticia; Freile-Pelegrin, Yolanda; Rivera-Madrid, Renata; Robledo, Daniel; Narváez-Zapata, José
- Abstract
The expression of mRNAs coding for 1-deoxyxylulose-5-phosphate synthase (DXS) and phytoene synthase (PSY) were studied in Dunaliella salina grown under nitrogen-sufficient (NS) and nitrogen-limited (NL) conditions. Under NS conditions growth was 2.5 times higher than under NL conditions. No differences were found in chlorophyll a content per cell, and total carotenoid content per cell was 5.33 pg 1−1 for the NS treatment and 7.76 pg 1−1 for the NL. DXS transcripts exhibited diminished expression under NL conditions, peaking at day 15 of cultivation in both treatments. Simultaneously, PSY transcripts exhibited constant expression under both conditions. These results suggest that these genes play an important role in the balance of photosynthetic pigments during pigment accumulation.
- Subjects
PHOTOSYNTHETIC pigments; CAROTENOIDS; BIOLOGICAL pigments; DUNALIELLA; GENE expression in plants
- Publication
Biotechnology Letters, 2006, Vol 28, Issue 11, p787
- ISSN
0141-5492
- Publication type
Article
- DOI
10.1007/s10529-006-9001-2