Atypical flagella assembly and haploid genome coiling during male gamete formation in Plasmodium

Atypical flagella assembly and haploid genome coiling during male gamete formation in Plasmodium
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疟原虫雄配子形成过程中的非典型鞭毛组装和单倍体基因组卷曲

DOI:
10.1101/2023.05.17.540968
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发表时间:
2023
期刊:
--
影响因子:
--
通讯作者:
Hair M
Hair M
中科院分区:
--
文献类型:
--
作者:
Hair M

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配子形成inPlasmodiumspp。发生在按蚊体内,对有性繁殖/分化以及向哺乳动物宿主传播至关重要。为了更好地了解雄性配子体发生的三维组织,我们使用了连续块面扫描电子显微镜(SBF-SEM)和连续切片细胞电子断层扫描(ssET)。伯格氏小细胞检测雄性配子形成过程中的关键结构。我们的数据显示,在小配子细胞中,轴突体以相反的方向缠绕在细胞核周围,形成一个中央轴突带。此外,我们发现小配子的细胞核以复杂的结构紧密缠绕在轴素周围,其形成始于小配子在鞭毛期间出现之前。我们对鞭毛微配子和单倍体基因组的详细三维组织的发现,突出了疟原虫雄性配子形成过程中轴素组装和单倍体基因组组织的一些非典型机制。
Gametogenesis inPlasmodiumspp. occurs within theAnophelesmosquito and is essential for sexual reproduction / differentiation and onwards transmission to mammalian hosts. To better understand the 3D organisation of male gametogenesis, we used serial block face scanning electron microscopy (SBF-SEM) and serial-section cellular electron tomography (ssET) ofP. bergheimicrogametocytes to examine key structures during male gamete formation. Our data reveals an elaborate organisation of axonemes coiling around the nucleus in opposite directions forming a central axonemal band in microgametocytes. Furthermore, we discover the nucleus of microgametes to be tightly coiled around the axoneme in a complex structure whose formation starts before microgamete emergence during exflagellation. Our discoveries of the detailed 3D organisation of the flagellated microgamete and the haploid genome highlight some of the atypical mechanisms of axoneme assembly and haploid genome organisation during male gamete formation in the malaria parasite.
DOI: 10.1101/767830
发表时间: 2019-09
影响因子: 4
作者:
M. Zeeshan;R. Pandey;D. Ferguson;E. Tromer;Robert Markus;S. Abel;D. Brady;Emilie Daniel;R. Limenitakis;A. Bottrill;K. L. Le Roch;A. Holder;R. Waller;D. Guttery;R. Tewari
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DOI: 10.1017/s003118200005160x
发表时间: 1982-01-01
期刊: PARASITOLOGY
影响因子: 2.4
作者:
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DOI: 10.1016/j.jsb.2005.07.007
发表时间: 2005-10-01
影响因子: 3
作者:
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通讯作者: Mastronarde, DN
DOI: --
发表时间: 2018
期刊:
影响因子: --
作者:
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通讯作者: C. Ash
体外恶性疟原虫的配子细胞发生:细胞周期
DOI: --
发表时间: 1979
期刊: Parasitology
影响因子: 2.4
作者:
R. Sinden;M. Smalley
通讯作者: M. Smalley