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Comparison of envelope-related genes in unicellular and filamentous cyanobacteria.

Yang Y, Qin S, Zhao F, Chi X, Zhang X - Comp. Funct. Genomics (2007)

Bottom Line: Hundreds of envelope biogenesis genes were divided into 5 major groups and annotated according to their conserved domains and phylogenetic profiles.Compared to unicellular species, the gene numbers of filamentous cyanobacteria expanded due to genome enlargement effect, but only few gene families amplified disproportionately, such as those encoding waaG and glycosyl transferase 2.Comparison of envelope genes among various species suggested that the significant variance of certain cyanobacterial envelope biogenesis genes should be the response to their environmental adaptation, which might be also related to the emergence of filamentous shapes with some new functions.

View Article: PubMed Central - PubMed

Affiliation: Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.

ABSTRACT
To elucidate the evolution of cyanobacterial envelopes and the relation between gene content and environmental adaptation, cell envelope structures and components of unicellular and filamentous cyanobacteria were analyzed in comparative genomics. Hundreds of envelope biogenesis genes were divided into 5 major groups and annotated according to their conserved domains and phylogenetic profiles. Compared to unicellular species, the gene numbers of filamentous cyanobacteria expanded due to genome enlargement effect, but only few gene families amplified disproportionately, such as those encoding waaG and glycosyl transferase 2. Comparison of envelope genes among various species suggested that the significant variance of certain cyanobacterial envelope biogenesis genes should be the response to their environmental adaptation, which might be also related to the emergence of filamentous shapes with some new functions.

No MeSH data available.


Related in: MedlinePlus

The phylogenetic tree of genes containing FAS1 domain in 17 species. Besides Trichodesmium erythraeum IMS101 and Anabaena sp. PCC 7120, other 15 species were from cyanobacteria, archaebacteria, eubacteria, actinomycetes, yeast, filamentous fungi, and vascular plants. To keep the figure clear and direct, the species were written in their genus name for short. The detailed information was described in Section 3 and Table 5.
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fig3: The phylogenetic tree of genes containing FAS1 domain in 17 species. Besides Trichodesmium erythraeum IMS101 and Anabaena sp. PCC 7120, other 15 species were from cyanobacteria, archaebacteria, eubacteria, actinomycetes, yeast, filamentous fungi, and vascular plants. To keep the figure clear and direct, the species were written in their genus name for short. The detailed information was described in Section 3 and Table 5.

Mentions: Fasciclin-like (FAS1) family has been identified as hemicellulose synthase in fungi and high plants [25], and it was involved in the secondary wall biosynthesis [26]. Homologues of this conserved domain, closely relative to the formation of filaments and extracellular polysaccharides, has been found in archaebacteria, eubacteria, actinomycetes, yeast, filamentous fungi, and vascular plants. It was found that 2 genes in Trichodesmium erythraeum IMS-101 and 6 in Anabaena sp. PCC 7120 contained the domain. Representative FAS1-containing genes were found from NCBI, including Synechococcus, Crocosphaera, Nostoc, Methanosarcina, Dehalococcoides, Aspergillus, Cryptococcus, Flavobacteria, Physcomitrella, Streptomyces, Chaetomium, Magnaapothe, Arabidopsis, Gossypium, and Zea, as shown in Table 5. Phylogenetic tree of all 23 FAS1-containing genes in many species was constructed (See Figure 3). It is clear that genes in Trichodesmium erythraeum IMS101 and Anabaena sp. PCC 7120 were distant from other cyanobacteria (Synechocystis, Synechococcus, Crocosphaera, and Nostoc); and all the cyanobacterial genes were separated from fungi and plants. The FAS1-containing genes were paralogous in the Phylum Cyanobacteria.


Comparison of envelope-related genes in unicellular and filamentous cyanobacteria.

Yang Y, Qin S, Zhao F, Chi X, Zhang X - Comp. Funct. Genomics (2007)

The phylogenetic tree of genes containing FAS1 domain in 17 species. Besides Trichodesmium erythraeum IMS101 and Anabaena sp. PCC 7120, other 15 species were from cyanobacteria, archaebacteria, eubacteria, actinomycetes, yeast, filamentous fungi, and vascular plants. To keep the figure clear and direct, the species were written in their genus name for short. The detailed information was described in Section 3 and Table 5.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC2211374&req=5

fig3: The phylogenetic tree of genes containing FAS1 domain in 17 species. Besides Trichodesmium erythraeum IMS101 and Anabaena sp. PCC 7120, other 15 species were from cyanobacteria, archaebacteria, eubacteria, actinomycetes, yeast, filamentous fungi, and vascular plants. To keep the figure clear and direct, the species were written in their genus name for short. The detailed information was described in Section 3 and Table 5.
Mentions: Fasciclin-like (FAS1) family has been identified as hemicellulose synthase in fungi and high plants [25], and it was involved in the secondary wall biosynthesis [26]. Homologues of this conserved domain, closely relative to the formation of filaments and extracellular polysaccharides, has been found in archaebacteria, eubacteria, actinomycetes, yeast, filamentous fungi, and vascular plants. It was found that 2 genes in Trichodesmium erythraeum IMS-101 and 6 in Anabaena sp. PCC 7120 contained the domain. Representative FAS1-containing genes were found from NCBI, including Synechococcus, Crocosphaera, Nostoc, Methanosarcina, Dehalococcoides, Aspergillus, Cryptococcus, Flavobacteria, Physcomitrella, Streptomyces, Chaetomium, Magnaapothe, Arabidopsis, Gossypium, and Zea, as shown in Table 5. Phylogenetic tree of all 23 FAS1-containing genes in many species was constructed (See Figure 3). It is clear that genes in Trichodesmium erythraeum IMS101 and Anabaena sp. PCC 7120 were distant from other cyanobacteria (Synechocystis, Synechococcus, Crocosphaera, and Nostoc); and all the cyanobacterial genes were separated from fungi and plants. The FAS1-containing genes were paralogous in the Phylum Cyanobacteria.

Bottom Line: Hundreds of envelope biogenesis genes were divided into 5 major groups and annotated according to their conserved domains and phylogenetic profiles.Compared to unicellular species, the gene numbers of filamentous cyanobacteria expanded due to genome enlargement effect, but only few gene families amplified disproportionately, such as those encoding waaG and glycosyl transferase 2.Comparison of envelope genes among various species suggested that the significant variance of certain cyanobacterial envelope biogenesis genes should be the response to their environmental adaptation, which might be also related to the emergence of filamentous shapes with some new functions.

View Article: PubMed Central - PubMed

Affiliation: Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.

ABSTRACT
To elucidate the evolution of cyanobacterial envelopes and the relation between gene content and environmental adaptation, cell envelope structures and components of unicellular and filamentous cyanobacteria were analyzed in comparative genomics. Hundreds of envelope biogenesis genes were divided into 5 major groups and annotated according to their conserved domains and phylogenetic profiles. Compared to unicellular species, the gene numbers of filamentous cyanobacteria expanded due to genome enlargement effect, but only few gene families amplified disproportionately, such as those encoding waaG and glycosyl transferase 2. Comparison of envelope genes among various species suggested that the significant variance of certain cyanobacterial envelope biogenesis genes should be the response to their environmental adaptation, which might be also related to the emergence of filamentous shapes with some new functions.

No MeSH data available.


Related in: MedlinePlus