Clonal reproduction with androgenesis and somatic recombination: the case of the ant Cardiocondyla kagutsuchi

Clonal reproduction with androgenesis and somatic recombination: the case of the ant Cardiocondyla kagutsuchi
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雄激素发生和体细胞重组的克隆繁殖:蚂蚁 Cardiocondyla kagutsuchi 的案例

DOI:
10.1007/s00114-016-1349-0
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发表时间:
2016
期刊:
The Science of Nature
影响因子:
--
通讯作者:
Tsuchida K
Tsuchida K
中科院分区:
--
文献类型:
--
作者:
Okita I;Tsuchida K

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在单倍二倍体昆虫如蚂蚁中,雄性有性生殖体由未受精的单倍卵发育而成,而雌性有性生殖体和工蚁则由受精的二倍体卵发育而成。然而,有些蚂蚁物种不会在两性之间交换基因库;雄性和雌性的有性生殖都是克隆产生的,而工蚁是有性生殖产生的。迄今为止,三种蚂蚁,Wasmannia auropunctata,Vollenhovia emeryi和Paratrechina longicornis,已被报道使用这种生殖系统繁殖。在这项研究中,我们发现,在一个谱系的antarccondylagagagutsuchi,男性和女性性也克隆产生。与上述三种不同的是,工蜂不仅是有性生殖的,而且在它们的核内转录间隔区中有重组序列,尽管在雄性或雌性有性生殖的工蜂中没有检测到重组序列。这些结果表明,该谱系可能具有一种机制,以补偿由于克隆繁殖与体细胞重组,发生在工人的遗传变异的减少。
In haplodiploid insects such as ants, male sexuals develop from unfertilised haploid eggs, while female sexuals and workers develop from fertilized diploid eggs. However, some ant species do not exchange their gene pool between sexes; both male and female sexuals are clonally produced, while workers are sexually produced. To date, three ant species,Wasmannia auropunctata,Vollenhovia emeryi, andParatrechina longicornis, have been reported to reproduce using such reproductive systems. In this study, we reveal that in one lineage of the antCardiocondyla kagutsuchi, male and female sexuals are also clonally produced. In contrast to the abovementioned three species, the workers were not only sexually produced but had recombinant sequences in their nuclear internal transcribed spacer regions, although the recombinant sequences were not detected in male or female sexuals. These results suggest that the lineage likely possesses a mechanism to compensate for the reduction in genetic variation due to clonal reproduction with somatic recombination that occurs within the workers.
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