DEVELOPMENT AND FINE-STRUCTURE OF THE GLANDULAR TRICHOMES OF ARTEMISIA-ANNUA L
DEVELOPMENT AND FINE-STRUCTURE OF THE GLANDULAR TRICHOMES OF ARTEMISIA-ANNUA L
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DOI：
10.1086/297096
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发表时间：
1993-03-01
影响因子：
2.3
通讯作者：
PAUL, RN
中科院分区：
文献类型：
--
作者：
DUKE, SO;PAUL, RN
青蒿叶头状腺的发育用扫描和透射电子显微镜监测。叶细胞分化为腺细胞始于最年轻的叶原基。在分化成由两个柄细胞、两个基细胞和三对分泌细胞组成的10细胞双列结构后，六个分泌细胞的角质层与细胞壁分离，形成一个双叶囊，最终分裂释放其内容物。在每个发育阶段，腺细胞含有相对较少的液泡体积。分泌细胞内有丰富的内质网。每个细胞对的质体都不同。成熟时，顶端细胞含有前质体或白色体，偶尔有类囊体。顶端细胞对下面的细胞对含有无定形叶绿体，无淀粉粒。基细胞对含有前质体或白质体，柄细胞含有叶绿体。分泌细胞叶绿体中基质与类囊体的比例较高。最初，嗜锇产物最常与堆叠的类囊体、质体包膜和滑面内质网相关，尽管它与所有细胞膜相关。在靠近细胞壁的质膜附近，细胞质富含含有嗜锇物质的滑面内质网。顶端分泌细胞对的顶端细胞壁在胞质内侧呈网状，在表皮侧含有嗜锇染色。在衰老早期，嗜锇产物通常与线粒体外膜相关。
Development of capitate glands on the leaves of annual wormwood (Artemisia annua L.) was monitored with scanning and transmission electron microscopy. Differentiation of foliar cells into gland cells began in the youngest leaf primordia. After differentiation into a 10-celled biseriate structure of two stalk cells, two basal cells, and three pairs of secretory cells, the cuticle of the six secretory cells separated from the cell walls to form a bilobed sac that eventually splits to release its contents. At every developmental stage, the cells of the the gland contained relatively little vacuolar volume. The secretory cells contained extensive endoplasmic reticulum. The plastids of each cell pair were different. At maturity, the apical cells contained proplastids or leucoplasts with only occasional thylakoids. The cell pair below the apical cell pair contained amorphous chloroplasts without starch grains. The basal cell pair contained proplastids or leucoplasts and the stalk cells contained chloroplasts. The stroma to thylakoid ratio in the secretory cell chloroplasts was high. Initially, osmiophilic product was observed most freqently associated with stacked thylakoids, plastid envelopes, and smooth endoplasmic reticulum, although it was associated with all cell membranes. Near the plasma membrane adjacent to cell walls bordering the subcuticular space, the cytoplasm was enriched in smooth endoplasmic reticulum containing osmiophilic material. The apical cell wall of the apical secretory cell pair was reticulated on the inner cytoplasmic side and contained osmiophilic staining on the cuticular side. During early senescence, osmiophilic product was commonly associated with outer mitochondrial membranes.