Misset M T, Gourret J P
J Cell Sci. 1984 Dec;72:65-74. doi: 10.1242/jcs.72.1.65.
In addition to the events occurring in the tapetal cells of most angiosperm species (cell wall lysis, endoplasmic reticulum development and sporopollenin deposition on the outer face of the cells) the tapetum of Ulex europaeus L. exhibits two characteristics. No orbicules, generally associated with the locular face of the secretory tapetum of angiosperms, are found, but some intracellular macro-orbicules are formed and then released in the anther loculus. The great diversity of reticular structures is emphasized by the presence of accumulations of smooth and flattened cisternae in the mature cells. Their similarity to those observed in the sieve elements of differentiating phloem suggests a possible functional interpretation in the light of the 'holocrine' behaviour of the tapetal cells.
除了大多数被子植物物种绒毡层细胞中发生的事件（细胞壁溶解、内质网发育以及孢粉素沉积在细胞外表面）外，欧洲荆豆的绒毡层还具有两个特征。未发现通常与被子植物分泌型绒毡层的小孢子囊面相关的球状体，但会形成一些细胞内大球状体，然后释放到花药小孢子囊中。成熟细胞中存在光滑和平扁的潴泡堆积，这突出了网状结构的巨大多样性。它们与在正在分化的韧皮部筛管分子中观察到的结构相似，这表明根据绒毡层细胞的“全泌型”行为可能会有一个功能解释。
