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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Molecular analysis of NOZZLE, a gene involved in pattern formation and early sporogenesis during sex organ development in Arabidopsis thaliana
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Molecular analysis of NOZZLE, a gene involved in pattern formation and early sporogenesis during sex organ development in Arabidopsis thaliana

机译：拟南芥性器官发育过程中涉及模式形成和早期孢子发生的基因NOZZLE的分子分析

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摘要

Sexual reproduction is a salient aspect of plants, and elaborate structures, such as the flowers of angiosperms, have evolved that aid in this process. Within the flower the corresponding sex organs, the anther and the ovule, form the male and female sporangia, the pollen sac and the nucellus, respectively. However, despite their central role for sexual reproduction little is known about the mechanisms that control the establishment of these important structures. Here we present the identification and molecular characterization of the NOZZLE (NZZ) gene in the flowering plant Arabidopsis thaliana. In several nzz mutants the nucellus and the pollen sac fail to form. It indicates that NZZ plays an early and central role in the development of both types of sporangia and that the mechanisms controlling these processes share a crucial factor. In addition, NZZ may have an early function during male and female sporogenesis as well. The evolutionary aspects of these Findings are discussed. NZZ encodes a putative protein of unknown function. However, based on sequence analysis we speculate that NZZ is a nuclear protein and possibly a transcription factor.
机译：有性生殖是植物的一个重要方面，而精细的结构（如被子植物的花）已经进化出，有助于此过程。在花中，相应的性器官，花药和胚珠分别形成雄性和雌性孢子囊，花粉囊和细胞核。然而，尽管它们在有性生殖中起着重要作用，但对于控制这些重要结构的建立机制知之甚少。在这里，我们介绍开花植物拟南芥中NOZZLE（NZZ）基因的鉴定和分子特征。在几个nzz突变体中，细胞核和花粉囊无法形成。它表明NZZ在两种类型的孢子囊的形成中起着早期和中心作用，并且控制这些过程的机制共享一个关键因素。另外，NZZ在男性和女性孢子形成过程中也可能具有早期功能。讨论了这些发现的进化方面。 NZZ编码功能未知的推定蛋白质。但是，基于序列分析，我们推测NZZ是一种核蛋白，可能是转录因子。

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