MORPHOGENESIS OF FILOBASIDIELLA-NEOFORMANS, SEXUAL STATE OF CRYPTOCOCCUS-NEOFORMANS
MORPHOGENESIS OF FILOBASIDIELLA-NEOFORMANS, SEXUAL STATE OF CRYPTOCOCCUS-NEOFORMANS
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DOI：
10.2307/3758800
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发表时间：
1976-01-01
期刊：
影响因子：
2.8
通讯作者：
KWONCHUNG, KJ
中科院分区：
文献类型：
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作者：
KWONCHUNG, KJ
F.新型人（= C.新生儿）进行了研究。两个交配型相反的酵母细胞接合后形成一个具有钳形连接的双孢菌丝体。一个无隔的细长的担子，顶端突然膨大，从双孢菌丝的侧面或末端产生。担子中的合子核进行减数分裂，产生的4个单倍体核出现在担子的顶端区域。随着细胞核的有丝分裂，单核担孢子从担子顶端的4个点出芽。这种向基型出芽产生长链的担孢子。遗传分析表明，在这种病原体的两极交配型系统。对F.与其他真菌的neoformans进行了讨论。
Morphogenesis of F. neoformans (= C. neoformans) was studied. A dikaryotic mycelium with clamp connections is formed after conjugation of 2 yeast cells of opposite mating type. A nonseptate, slender basidium with an abruptly expanded apex arises laterally or terminally from the dikaryotic hypha. The zygote nucleus in the basidium undergoes meiosis and the 4 resulting haploid nuclei appear in the apical area of the basidium. As the nuclei divide by mitosis, uninucleate basidiospores are budded out from 4 spots on the apex of basidium. This basipetal budding produces long chains of basidiospores. Genetic analysis revealed a bipolar mating type system in this pathogen. The phylogenetic relationship of F. neoformans with other fungi is discussed.