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首页> 外文期刊>Protoplasma: An International Journal of Cell Biology >Pollen development in male sterile mangosteen (Garcinia mangostana L.) and male fertile seashore mangosteen (Garcinia celebica L.)
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Pollen development in male sterile mangosteen (Garcinia mangostana L.) and male fertile seashore mangosteen (Garcinia celebica L.)

机译：雄性不育山竹（Garcinia Mangostana L.）和雄性肥沃海湾山竹（Garcinia Celebica L）的花粉发育

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摘要

Mangosteen (Garcinia mangostana L.) is an economically important tropical fruit, yet the reproductive biology of this dioecious plant is complex. Male trees are not known, and female trees have sterile anthers leading to apomixis. We hypothesized that pollen abortion in mangosteen is due to altered tapetumactivity duringmicrogametogenesis. Developmental events at the cellular and sub-cellular levels during pollen development in G. mangostana were therefore examined and compared with seashore mangosteen (G. celebica L.), a closely related species with fertile anthers. In G. mangostana, the microspore mother cell had disorganized cytoplasm, including lack of Golgi apparatus and its vesicles, as well as abnormal callose wall accumulation. Globular droplets, which resembled orbicules or Ubisch bodies, were abundant in the locule, including pre-Ubisch bodies found along the tapetal plasma membrane. The tapetum of G. mangostana underwent cell death earlier than the fertile G. celebica, and during the premature death, the mitochondria had dramatically altered shapes. Low accumulation of starch in collapsed microsporemother cells and tetrad cell remnants also suggested that altered cellmetabolismis related to pollen abortion in mangosteen. The present results demonstrate the importance of coordinated development between the tapetum and microspores in pollen development and provide new insights into male sterility in mangosteen (G. mangostana).
机译：山竹（Garcinia Mangostana L.）是一个经济上重要的热带水果，但这种脱衣厂的生殖生物学很复杂。雄树不知道，女树木对赤霉素有无菌花药。我们假设山竹萎缩的花粉流产是由于在明霉病期间改变了绦虫。因此，对G.Mangostana的花粉发育过程中的细胞和亚细胞水平的发育事件被检查并与海滨山竹（G. Celebica L.）进行比较，是一种与肥沃的花药密切相关的物种。在G.Mangostana，微孔母细胞具有紊乱的细胞质，包括缺乏高尔基装置及其囊泡，以及异常的胼隙壁积累。在当局中，类似于突出物或ubisch体的球状液滴，包括沿着翅膀膜膜发现的ubisch尸体。 G.Mangostana的Tapetum早于肥沃的G. Celebica早前接受了细胞死亡，并且在过早死亡期间，线粒体的形状显着改变了。在塌陷的婴儿孢子术细胞和四细胞残留的淀粉的低积聚也表明，在山竹果汁中改变了与花粉流产有关的Cellmetabolismis。目前的结果表明，花粉发育中Tapetum和幼儿孢子之间的协调发展的重要性，并在山竹（G.Mangostana）的雄性不育中提供了新的洞察力。

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