Complex regulation of plant sex by peptides
Complex regulation of plant sex by peptides
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DOI：
10.1126/science.aar4190
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发表时间：
2017-12
期刊：
影响因子：
56.9
通讯作者：
M. Stegmann;C. Zipfel
中科院分区：
文献类型：
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作者：
M. Stegmann;C. Zipfel
如何调控花粉管传递精子细胞产生种子的特点是我们的大多数食物，无论是水果还是谷物，都是显花植物受精的直接结果。由于这也是遗传信息代代相传的基础，因此了解控制植物繁殖的分子事件至关重要。在受精过程中，花粉（雄配子体或生殖细胞）形成一个花粉管，被引导到胚珠（雌配子体），在那里，一旦破裂，它将提供它的精细胞（1）。从雌蕊（雌性生殖器官）对花粉的感知到花粉管的生长、引导和最终的破裂，所有的步骤都是由一个复杂的分子对话控制的，这个分子对话涉及许多植物受体激酶和内源性信号分子，包括分泌的肽（2）。在本期的第1596和1600页，Ge et al.（3）和Mecchia et al.（4）分别描述了雄性和雌性配子体之间的信号传导事件，这为控制植物受精和结实的分子机制提供了令人兴奋的见解。
How the pollen tube is regulated to deliver sperm cells to produce seeds is characterized Most of our food—whether fruit or grain—is the direct result of flowering plant fertilization. As this also underlies the transmission of genetic information over generations, it is essential to understand the molecular events controlling plant reproduction. During fertilization, pollen (the male gametophyte, or reproductive cell) forms a pollen tube which is guided toward the ovule (the female gametophyte), where, upon bursting, it will deliver its sperm cells (1). All steps—from the perception of compatible pollens by the flower pistil (the female reproductive organ) to pollen tube growth, guidance and, ultimately, rupture—are controlled by a complex molecular dialogue involving numerous plant receptor kinases and endogenous signaling molecules, including secreted peptides (2). On pages 1596 and 1600 of this issue, Ge et al. (3) and Mecchia et al. (4), respectively, characterize signaling events between the male and female gametophytes, which offer exciting insights into the molecular mechanisms controlling plant fertilization and seed setting.