胞间连丝

There was lots of organelle, such as rib somes, mitochondria in companion cell during the mature stage of SE. Also the plasmodesmata appeared in cell wall between SE and CC.

在筛管成熟期间，伴胞的细胞质较浓，内含辜富的核糖核蛋白体、线粒体等细胞器，与筛管相连的细胞壁上具有胞间连丝。

Companion cell An elongated thinwalled cell cut off longitudinally from the same meristematic cell as the SIEVE ELEMENT with which it is closely associated.

伴胞：与筛管分子侧面相邻的一种细胞，和筛管间有密集胞间连丝，它与筛管是由分生组织的同一个母细胞不均等分裂发育而成。

The immunoblotting of hexose transporter detected a 52 kD polypeptide for hexose transporter, and moreover, the apparent amount of hexose transporter also increased with fruit development.

载体蛋白可能是在具有完整细胞功能的伴胞中合成的，而后通过胞间连丝运输到去核的筛分子中。

At the leptotene stage the enzyme was mainly present in the cisternae of smooth endoplasmic reticulum and their derived vesicles, but absent in the Golgi body and Golgi vesicles.

花粉母细胞减数分裂前期Ⅰ的活性进行了电镜细胞化学定位，以研究其在次生胞间连丝和胞质通道形成中的作用。

They are usually associated with specialized parenchyma cells called COMPANION CELLS, whose protoplasts are connected with the protoplasm of the sieve tube by plasmodesmata.

筛管常与特殊薄壁细胞相联系，这种细胞被称为伴胞，其原生质和筛管内的原生质有丰富的胞间连丝相通。

The presence of exocytotic vesicles containing reaction products suggests that pectinase shares the same excretive pathway as that used by cellulase for its delivery into the wall, i.e.

同时果胶酶活性也出现在细胞壁上，尤其是出现在简单或者复杂分枝状的胞间连丝和胞质通道内部或沿着它们附近细胞壁的中胶层分布。

The high plasmodesmal SEL in some tissues and the change of plasmodesmal SEL during development might play an important role in the regulation of development.

某些组织中胞间连丝很高的SEL和发育过程胞间连丝SEL的变化可能在植物发育调控中有重要作用。

This paper summarizes the recent progress in studies on the plasmodesmatal diversity, the regulation of plasmodesmal SEL, the plasmodesmal macromolecule trafficking and the symplasmic domains in relation to plant morphogenesis and dormancy, etc.

本文仅就胞间连丝结构的多样性；胞间通道的调节因子；大分子蛋白质和核酸的胞间运输；胞间连丝阻断和共质体分区的形成及其与形态发生、休眠和抗逆性的关系等几个方面的新进展做一个简要的综述，借此例证胞间连丝在植物生命活动中的重要意义。

This observation provided a strong support to the point that most leaves export the most of assimilates in the light time. Plasmodesmal densities between SE/CC, CC/PP, PP/PP and PP/BSC (bundle-sheath cell) decreased in weak light. Plasmodesmata were observed between CC/SE (nacreous-walled sieve element), PP/BSC in branch veins in normal light intensity, but not in weak light. Thus apoplasmic pathway may be the main mode of transport of assimilates in weak light, however symplasmic pathway may be the main mode of transport of assimilates in normal light intensity.

在筛管/伴胞、伴胞/韧皮薄壁细胞、韧皮薄壁细胞/韧皮薄壁细胞和韧皮薄壁细胞/维管束鞘细胞之间的胞间连丝密度都在弱光条件下下降，在正常光照强度下支脉筛管/伴胞和韧皮薄壁细胞/维管束鞘细胞之间可以观察到胞间连丝，而在弱光下几乎观察不到胞间连丝的存在，所以同化物的运输在弱光条件下可能以质外体运输为主，而在正常光照强度下，共质体运输可能是主要的运输方式。

There are two types of CC formation: modified from plasmodesmata and de novo formed across the cell wall.

胞质通道的形成方式有两种：由胞间连丝扩宽转变而来和细胞壁上的重新形成。

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％。