Mutations affecting nerve attachment of Caenorhabditis elegans.

Mutations affecting nerve attachment of Caenorhabditis elegans.
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影响秀丽隐杆线虫神经附着的突变。

DOI:
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发表时间:
2001
期刊:
影响因子:
3.3
通讯作者:
Shin Takagi
Shin Takagi
中科院分区:
生物学2区
文献类型:
--
作者:
Go Shioi;Michinari Shoji;M. Nakamura;Takeshi Ishihara;Isao Katsura;Hajime Fujisawa;Shin Takagi

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使用泛神经元GFP标记,进行了形态筛选,以检测线虫幼虫主要神经索严重紊乱的致死突变体。我们恢复并鉴定了21例表现出腹侧神经索移位或脱离体壁的突变体(Ven:腹侧脊髓异常)。6个突变定义了3个新的遗传位点:Ven-1、Ven-2和Vin-3。15个突变被证明是先前发现的肌肉附着/定位基因MUP-4、MUA-1、MUA-5和MUA-6的等位基因。所有突变体还表现出MUA/MUP突变体特有的肌肉附着/定位缺陷。泛神经元GFP标记还显示,其他MUA/MUP基因座的突变体,如MUP-1、MUP-2和MUA-2,也表现出Ven缺陷。在一些突变体中,皮下组织、排泄道和性腺在形态上是异常的。缺陷的多效性表明,在线虫中,VEN和MUA/MUP基因通常是维持组织与体壁附着所必需的。
Using a pan-neuronal GFP marker, a morphological screen was performed to detect Caenorhabditis elegans larval lethal mutants with severely disorganized major nerve cords. We recovered and characterized 21 mutants that displayed displacement or detachment of the ventral nerve cord from the body wall (Ven: ventral cord abnormal). Six mutations defined three novel genetic loci: ven-1, ven-2, and ven-3. Fifteen mutations proved to be alleles of previously identified muscle attachment/positioning genes, mup-4, mua-1, mua-5, and mua-6. All the mutants also displayed muscle attachment/positioning defects characteristic of mua/mup mutants. The pan-neuronal GFP marker also revealed that mutants of other mua/mup loci, such as mup-1, mup-2, and mua-2, exhibited the Ven defect. The hypodermis, the excretory canal, and the gonad were morphologically abnormal in some of the mutants. The pleiotropic nature of the defects indicates that ven and mua/mup genes are required generally for the maintenance of attachment of tissues to the body wall in C. elegans.
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发表时间: 1997-07-01
影响因子: 10.5
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