The genome of the diatom Thalassiosira pseudonana: ecology, evolution, and metabolism.
Science
; 306(5693): 79-86, 2004 Oct 01.
Article
em En
| MEDLINE
| ID: mdl-15459382
ABSTRACT
Diatoms are unicellular algae with plastids acquired by secondary endosymbiosis. They are responsible for approximately 20% of global carbon fixation. We report the 34 million-base pair draft nuclear genome of the marine diatom Thalassiosira pseudonana and its 129 thousand-base pair plastid and 44 thousand-base pair mitochondrial genomes. Sequence and optical restriction mapping revealed 24 diploid nuclear chromosomes. We identified novel genes for silicic acid transport and formation of silica-based cell walls, high-affinity iron uptake, biosynthetic enzymes for several types of polyunsaturated fatty acids, use of a range of nitrogenous compounds, and a complete urea cycle, all attributes that allow diatoms to prosper in aquatic environments.
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Base de dados:
MEDLINE
Assunto principal:
Genoma
/
Análise de Sequência de DNA
/
Diatomáceas
/
Ecossistema
/
Evolução Biológica
Limite:
Animals
Idioma:
En
Revista:
Science
Ano de publicação:
2004
Tipo de documento:
Article
País de afiliação:
Estados Unidos