Ascorbate peroxidase-related (APx-R) is not a duplicable gene

被引：14

作者：

Dunand, Christophe ^{[1
,2
]}

Mathe, Catherine ^{[1
,2
]}

Lazzarotto, Fernanda ^{[3
]}

Margis, Rogerio ^{[4
,5
]}

Margis-Pinheiro, Marcia ^{[3
]}

机构：

[1] Univ Toulouse, Lab Rech Sci Vegetales, Toulouse, France

[2] CNRS, Castanet Tolosan, France

[3] Univ Fed Rio Grande do Sul, Dept Genet, Porto Alegre, RS, Brazil

[4] Univ Fed Rio Grande do Sul, Ctr Biotecnol, Porto Alegre, RS, Brazil

[5] Univ Fed Rio Grande do Sul, Dept Biofis, Porto Alegre, RS, Brazil

来源：

PLANT SIGNALING & BEHAVIOR | 2011年 / 6卷 / 12期

关键词：

single-copy gene; gene duplication; ascorbate peroxidase; selection pressure;

D O I：

10.4161/psb.6.12.18098

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Phylogenetic, genomic and functional analyses have allowed the identification of a new class of putative heme peroxidases, so called APx-R (Apx-Related). This new class, mainly present in the green lineage (including green algae and land plants), can also be detected in other unicellular chloroplastic organisms. Except for recent Apx-R extra-copies lost after chromosomal or segmental duplications. In a similar way, most Apx-R co-expressed genes in Arabidopsis genome do not have conserved extra-copies after chromosomal duplications and are predicted to be localized in organelles, as are the Apx-R. The member of this gene network can be considered a unique gene, well conserved through the evolution due to a strong negative selection pressure and a low evolution rate.

引用

收藏

页码：1908 / 1913

页数：6

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