New resources for the Drosophila 4th chromosome: FRT101F enabled mitotic clones and Bloom syndrome helicase enabled meiotic recombination.

New resources for the Drosophila 4th chromosome: FRT101F enabled mitotic clones and Bloom syndrome helicase enabled meiotic recombination.
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DOI:
10.1093/g3journal/jkac019
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发表时间:
2022-04-04
期刊:
G3 (Bethesda, Md.)
影响因子:
--
通讯作者:
Newfeld SJ
Newfeld SJ
中科院分区:
其他
文献类型:
--
作者:
Goldsmith SL;Shimell M;Tauscher P;Daly SM;Shimmi O;O'Connor MB;Newfeld SJ

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黑腹果蝇第四染色体长臂上的基因很难研究,因为该染色体缺乏有丝分裂和减数分裂重组。没有重组,许多标准的遗传分析方法是不可能的。在这里,我们报告第四个新资源。对于有丝分裂重组,我们产生了一个染色体,其FRT非常接近101 F中的着丝粒,并产生了一个衍生物,其携带FRT 101 F,其具有远端遍在表达的GAL 80转基因。这对染色体使未标记和MARCM克隆。对于减数分裂重组,我们证明了布卢姆综合征解旋酶和重组缺陷的双突变基因型可以通过女性减数分裂产生重组的第4染色体。所有菌株将通过布卢明顿果蝇库存中心提供给社区。第四次研究的额外资源正在准备中,也将提供。第四染色体资源计划的目标是加速对第四染色体蛋白质编码基因的遗传分析,包括44个尚未证实功能的基因。对这些以前无法获得但在很大程度上保守的基因的研究将填补我们对后生动物发育和生理学知识的长期空白。
Genes on the long arm of the Drosophila melanogaster 4th chromosome are difficult to study because the chromosome lacks mitotic and meiotic recombination. Without recombination numerous standard methods of genetic analysis are impossible. Here, we report new resources for the 4th. For mitotic recombination, we generated a chromosome with an FRT very near the centromere in 101F and a derivative that carries FRT101F with a distal ubiquitously expressed GAL80 transgene. This pair of chromosomes enables both unmarked and MARCM clones. For meiotic recombination, we demonstrate that a Bloom syndrome helicase and recombination defective double mutant genotype can create recombinant 4th chromosomes via female meiosis. All strains will be available to the community via the Bloomington Drosophila Stock Center. Additional resources for studies of the 4th are in preparation and will also be made available. The goal of the 4th Chromosome Resource Project is to accelerate the genetic analysis of protein-coding genes on the 4th, including the 44 genes with no demonstrated function. Studies of these previously inaccessible but largely conserved genes will close longstanding gaps in our knowledge of metazoan development and physiology.
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