文献类型: 外文期刊
第一作者: Guddeti, S
作者: Guddeti, S;Zhang, DC;Li, AL;Leseberg, CH;Kang, H;Li, XG;Zhai, WX;Johns, MA;Mao, L
作者机构:
关键词: gene duplication;genome evolution;Oryza saliva;microRNA
期刊名称:CELL RESEARCH ( 影响因子:25.617; 五年影响因子:25.924 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: MicroRNAs (miRNAs) are 20-22 nucleotide non-coding RNAs that play important roles in plant and animal development. They are usually processed from larger precursors that can form stem-loop structures. Among 20 miRNA families that are conserved betweenArabidopsis and rice, the rice miR395 gene family was unique because it was organized into compact clusters that could be transcribed as one single transcript. We show here that in fact this family had four clusters of total 24 genes. Three of these clusters were segmental duplications. They contained miR395 genes of both 120 bp and 66 bp long. However, only the latter was repeatedly duplicated. The fourth cluster contained miR395 genes of two different sizes that could be the consequences of intergenic recombination of genes from the first three clusters. On each cluster, both 1-duplication and 2-duplication histories were observed based on the sequence similarity between miR395 genes, some of which were nearly identical suggesting a recent origin. This was supported by a miR395 locus survey among several species of the genus Oryza, where two clusters were only found in species with an AA genome, the genome of the cultivated rice. A comparative study of the genomic organization of Medicago truncatula miR395 gene family showed significant expansion of intergenic spaces indicating that the originally clustered genes were drifting away from each other. The diverse genomic organizations of a conserved microRNA gene family in different plant genomes indicated that this important negative gene regulation system has undergone dramatic tune-ups in plant genomes.
分类号: Q2
- 相关文献
作者其他论文 更多>>
-
Cooperation of xanthophyll cycle with water-water cycle in the protection of photosystems 1 and 2 against inactivation during chilling stress under low irradiance
作者:Li, XG;Bi, YP;Zhao, SJ;Meng, QW;Zou, Q;He, QW
关键词:Capsicum;chlorophyll fluorescence;irradiance;temperature
-
Cooperation of xanthophyll cycle with water-water cycle in the protection of photosystems 1 and 2 against inactivation during chilling stress under low irradiance
作者:Li, XG;Bi, YP;Zhao, SJ;Meng, QW;Zou, Q;He, QW
关键词:Capsicum; chlorophyll fluorescence; irradiance; temperature
-
Green fluorescent protein as a vital elimination marker to easily screen marker-free transgenic progeny derived from plants co-transformed with a double T-DNA binary vector system
作者:Chen, SB;Li, XG;Liu, X;Xu, HL;Meng, K;Xiao, GF;Wei, XL;Wang, F;Zhu, Z
关键词:co-transformation;marker-free;double T-DNA vector;green fluorescent protein;Nicotiana tabacum
-
Characterization of the rice floral organ number mutant fon3
作者:Jiang, L;Qian, Q;Mao, L;Zhou, QY;Zhai, WX
关键词:development;floral organ number;fon3 mutant;rice (Oryza sativa L.)
-
Comparative analysis of early H2O2 accumulation in compatible and incompatible wheat-powdery mildew interactions
作者:Li, AL;Wang, ML;Zhou, RH;Kong, XY;Huo, NX;Wang, WS;Jia, JZ
关键词:compatible interaction;hypersensitivity;incompatible interaction;powdery mildew;reactive oxygen species;wheat
-
Cloning, characterization and expression analysis of interleukin-10 from the zebrarish (Danio rerion)
作者:Zhang, DC;Shao, YQ;Huang, YQ;Jiang, SG
关键词:cytokine;genomic analysis;interleukin;zebrafish
-
RAPD analysis on Hypophthalmichthys molitrix and Anistchthys noblils.
作者:Zhang, XY;Yang, JQ;Zhang, DC;Deng, FJ;Yu, LN;Fang, YL
关键词:fish genome;RAPD analysis;genetic diversity;genomic;DNA;extract