Identification of hypo-osmotically induced genes in Kappaphycus alvarezii (Solieriaceae, Rhodophyta) through expressed sequence tag analysis
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Chenlin Liu
,
Xiuliang Wang
Abstract
Hypo-osmotic conditions are among the most stressful environmental factors that affect seaweed physiology and productivity. To improve understanding of hypo-osmotic adaptation and to find genes involved in low salinity stress, we conducted an analysis of expressed sequence tags (ESTs) on the κ-carrageenan-producing red algae, Kappaphycus alvarezii. Of 454 tentatively unique genes (TUGs), 281 matched protein sequences by BlastX analysis (e value≤10-3), 112 TUGs matched ESTs from other agar- or carrageenan-producing red algae, and 98 TUGs were annotated. The transcriptional profiles of six functional genes from K. alvarezii ESTs were examined. An ATP-binding cassette transporter gene and a sodium phosphate symporter gene were significantly up-regulated, indicating the importance of membrane transport proteins in coping with hypo-osmotic stress conditions.
©2011 by Walter de Gruyter Berlin Boston
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Articles in the same Issue
- Research Articles
- Iberian intertidal turf assemblages dominated by Erythroglossum lusitanicum (Ceramiales, Rhodophyta): structure, temporal dynamics, and phenology
- Checklist of marine benthic green algae (Chlorophyta) on Hainan, a subtropical island off the coast of China: comparisons between the 1930s and 1990–2009 reveal environmental changes
- Notes on marine algae in the International Biosphere Reserve Seaflower, Caribbean Colombian I: new records of macroalgal epiphytes on the seagrass Thalassia testudinum
- Ceramium cormacii sp. nov. (Ceramiaceae, Rhodophyta), a new Mediterranean species epizoic on loggerhead sea turtles (Caretta caretta)
- Life history of Chaetomorpha valida (Cladophoraceae, Chlorophyta) in culture
- Identification of hypo-osmotically induced genes in Kappaphycus alvarezii (Solieriaceae, Rhodophyta) through expressed sequence tag analysis
- Morphological variation in a small Thalassiosira species (Bacillariophyta) under different culture regimes
- Occurrence of the seagrass Halophila stipulacea (Hydrocharitaceae) in the southern Mediterranean Sea
- Reproductive biology of a natural mangrove hybrid Rhizophora annamalayana and its parent species (R. apiculata and R. mucronata) (Rhizophoraceae)
