THE LIFE-CYCLE OF CRYPTOCHLORA-PERFORANS (CHLORARACHNIOPHYTA)
THE LIFE-CYCLE OF CRYPTOCHLORA-PERFORANS (CHLORARACHNIOPHYTA)
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DOI：
10.1111/j.1438-8677.1993.tb00772.x
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发表时间：
1993-10-01
期刊：
影响因子：
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通讯作者：
SCHNETTER, R
中科院分区：
文献类型：
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作者：
BEUTLICH, A;SCHNETTER, R
观察不同的生命周期阶段，配子融合的行为，并在Cryptochlora perforans的核DNA含量的测量导致了第一个概念，关于生活史Chlorarachniophyta：铬的生命周期。穿孔线虫为二倍体单倍型（配子融合，核融合-有丝分裂-减数分裂-有丝分裂）。在单倍体以及在二倍体生活史阶段变形虫和球形阶段发生。同形配子常为变形的，无丝状伪足。只有单倍体鞭毛虫阶段是已知的代表线粒体或减数分裂孢子。二倍体球形阶段具有颗粒状细胞质结构，可能比单倍体的稍大。然而，只有在核DNA含量的基础上，才有可能对单倍体（配子体）和二倍体（孢子体）阶段进行阳性鉴定。
Observations on the behaviour of different life cycle stages, gamete fusions, and measurements of nuclear DNA contents in Cryptochlora perforans resulted in a first concept concerning life histories in Chlorarachniophyta: the life cycle of Cr. perforans is diplohaplontic (gamete fusion with karyogamy - mitosis - meiosis - mitosis). In the haploid as well as in the diploid life cycle phases amoeboid and coccoid stages occur. The isomorphic gametes are modified amoebae frequently without filopodia. Only haploid flagellate stages are known representing mito- or meiozoospores. Diploid coccoid stages have a granular cytoplasmic structure and may be somewhat larger than haploid ones. Nevertheless, positive identification of haploid (gametophytic) and diploid (sporophytic) stages is only possible on the basis of nuclear DNA contents.