胞间连丝

ER took part in cell wall material deposition during endosperm cell construction. ER rounded up matrix forming endocytic vacuole. ER cisterna swelling and accumulating starch developed into amyloplast. ER took part in protein synthesis and deposition, played a core role in protein body formation. ER swelled at the end to form many vesicles. ER was associated with the plasmodesmata, helped transporting nutrients at the development and differentiation stage.

内质网参与胚乳细胞构建中细胞壁物质的积累；内质网包裹基质形成吞噬体，为胚乳的发育提供营养；内质网槽库膨大，积累淀粉转变成淀粉质体；内质网参与蛋白质的合成与积累，在蛋白体的形成中处于核心地位；内质网末端节状膨胀，形成潴泡；灌浆高峰期内质网常与胞间连丝相连，有助于物质的运输。

During the secondary wall formation of fiber, H+-ATPase, Ca2+-ATPase and APase also sustainablely remained in plasma membrane, plasma membrane invagination, plasmodesmata, transfer vesicles and agglutinated nucleus.

在次生壁形成的整个过程中，ATP酶、Ca2+-ATPase和酸性磷酸酶在运输小泡、细胞膜、质膜内陷、胞间连丝和凝聚的染色质中将持续存在。

The meristem cells arranged closly and there were rich plas-modesma between the cells.

在分生组织的区域，细胞排列紧密，细胞间存在丰富的胞间连丝。

In cells with active secretion, enzyme reaction product was present in large quantities on the plasma membrane, vacuo le membrane, plasmodesma and in the endoplasmic reticulum, plastid lamellae,and only in small quantities in the mitochondria and small vesicles.

分泌活动旺盛的细胞中，质膜、内质网、质体的内部片层、胞间连丝以及多数大液泡的膜上面都有大量ATP 酶活性反应产物，线粒体和小泡上只有少量酶活性反应产物。

In cells with active secretion, enzyme reaction product was present in large quantities on the plasma membrane, vacuole membrane, plasmodesma and in the endoplasmic reticulum, plastid lamellae,and only in small quantities in the mitochondria and small vesicles.

分泌活动旺盛的细胞中，质膜、内质网、质体的内部片层、胞间连丝以及多数大液泡的膜上面都有大量ATP 酶活性反应产物，线粒体和小泡上只有少量酶活性反应产物。

Institute of Botany, the Chinese Academy of Sciences, Beijing 100093Abstract Plasmodesma is a supracellular structure of plant organism. It provides a direct cell-to-cell cytoplasmic pathway for material transport and message transference, and converts the colonies of independent cells into an interconnected symplast system.

胞间连丝为多细胞植物有机体提供了一个直接的细胞间物质运输和信息传递的细胞质通道，把一个个独立的"细胞王国"转变成相互连接的共质体，它是当今细胞生物学中十分活跃的研究领域。

Plasmodesma is a supracellular structure of plant organism. It provides a direct cell_to_cell cytoplasmic pathway for material transport and message transference, and converts the colonies of independent cells into an interconnected symplast system.

胞间连丝是植物体的一种超细胞结构(supracellularstructure ，Lucasetal，1 993 )，它把一个个独立的"细胞王国"转变成相互连接的共质体，为植物体的物质运输和信息传递提供了一个直接的从细胞到细胞的细胞质通道。

There are many evidences indicating that plasmodesmata SEL varies in different tissues under different physiological conditions.

近年来研究的许多证据表明，胞间连丝的SEL随组织种类及其生理状况而异。

The typical structural characteristics of oil cells include, presence of a tripartite cell wall, in which the outer and inner layers are cellulose, the middle layer is a suberin layer lamellated; presence of a cupule attaching the oil vacuole to the wall; presence of plasmodesmata occurring in wall protuberances, which is coursed by the suberin layer.

成熟油细胞结构的典型特征是：具有三层暗明暗相间的细胞壁，内外两层是纤维素壁层，电子不透明，中间一层是电子透明的木栓质化壁层，由明暗相间的片层结构组成；细胞腔被油囊充满，它由一个细胞壁向内突起的杯形构造连接于细胞壁上：胞间连丝发生于由木栓质化壁层形成的一个向内的突起中。

Institute of Botany, the Chinese Academy of Sciences, Beijing 100093Abstract Plasmodesma is a supracellular structure of plant organism. It provides a direct cell-to-cell cytoplasmic pathway for material transport and message transference, and converts the colonies of independent cells into an interconnected symplast system.

胞间连丝为多细胞植物有机体提供了一个直接的细胞间物质运输和信息传递的细胞质通道，把一个个独立的&细胞王国&转变成相互连接的共质体，它是当今细胞生物学中十分活跃的研究领域。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。