Williams E G, Knox R B, Kaul V, Rouse J L
J Cell Sci. 1984 Jul;69:127-35. doi: 10.1242/jcs.69.1.127.
In Rhododendron spp. and Ledum groenlandicum a callose wall is laid down around the zygote in the first 2 days after fertilization. The periodic acid/Schiff-positive, aniline blue-fluorescence-positive callosic wall is initiated adjacent to the degenerating synergid, extends to cover the entire zygote surface, and remains visible during the initiation of embryogeny as the zygote elongates before the first proembryonal division. Unfertilized ovules show eventual callose deposition in the ovule wall cells during senescence in undeveloped abscising pistils, but show no development of callose within the embryo sac. Possible roles of a zygote special callose wall are discussed.
在杜鹃花属植物和格陵兰杜香中，受精后的头两天内合子周围会形成胼胝质壁。这种高碘酸/席夫氏阳性、苯胺蓝荧光阳性的胼胝质壁在退化的助细胞附近开始形成，延伸至覆盖合子的整个表面，并在胚胎发生开始时，即合子在第一次原胚分裂前伸长时仍可见。未受精的胚珠在未发育的脱落雌蕊衰老过程中，胚珠壁细胞最终会出现胼胝质沉积，但胚囊内未出现胼胝质的发育。文中讨论了合子特殊胼胝质壁可能的作用。
