Natural variation in Caenorhabditis briggsae mitochondrial form and function suggests a novel model of organelle dynamics.

Natural variation in Caenorhabditis briggsae mitochondrial form and function suggests a novel model of organelle dynamics.
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DOI:
10.1016/j.mito.2012.12.006
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发表时间:
2013-01
期刊:
影响因子:
4.4
通讯作者:
Estes, Suzanne
Estes, Suzanne
中科院分区:
生物学3区
文献类型:
--
作者:
Hicks, Kiley A.;Denver, Dee R.;Estes, Suzanne

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众所周知,线粒体的功能和形态是通过依赖于线粒体膜电位的细胞器融合和裂变周期联系在一起的(ΔΨM);然而,我们缺乏对自然线粒体种群的特征和动态的理解。利用我们最近研究的单变量线粒体表型变异数据,我们分析了24个线粒体性状的表型相关模式。我们的研究结果支持ΔΨM在塑造线粒体动力学中的作用,但对线粒体ROS没有作用。此外,我们的研究提出了一种新的线粒体种群动态模型,该模型依赖于细胞环境背景,并具有线粒体基因组完整性的含义。
Mitochondrial functioning and morphology are known to be connected through cycles of organelle fusion and fission that depend upon mitochondrial membrane potential (ΔΨM); however, we lack an understanding of the features and dynamics of natural mitochondrial populations. Using data from our recent study of univariate mitochondrial phenotypic variation in Caenorhabditis briggsae nematodes, we analyzed patterns of phenotypic correlation for 24 mitochondrial traits. Our findings support a role for ΔΨM in shaping mitochondrial dynamics, but no role for mitochondrial ROS. Further, our study suggests a novel model of mitochondrial population dynamics dependent upon cellular environmental context and with implications for mitochondrial genome integrity.
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