保卫细胞

The cells are typically platelike and closely packed together except where they are modified for a particular function, as are guard cells.

表皮细胞是很有特色的一个细胞层，除了某些具有特殊功能部分细胞，如保卫细胞外，通常都紧密的排列在一起。

Since Arabidopsis thaliana guard cell protoplast is quite small (6~9μm), it had brought lots of difficulty to protoplast isolating and patch clamping.

由于拟南芥保卫细胞原生质体个体较小(6～9μm)，给分离提取保卫细胞原生质体带来了一定的困难。

In this paper, leaf epidermis of Arabidopsis thaliana were used as main material, guard cell protoplasts with high activity were isolated, the relation between H~+-ATPase and calcium channel in plasma membrane of guard cells was investigated with whole cell patch clamping.

本论文以WS生态型拟南芥叶片表皮为实验材料，成功分离出高活性的保卫细胞原生质体，利用膜片钳技术对保卫细胞信号转导过程中质膜质子泵与质膜钙通道之间是否存在一定的关系进行了研究。

The result showed that the changes of stoma density ranged from 91~173 unitmm^(-2). Guard cell length ranged from 25.8~32.4 μm. Guard cell width ranged from 18.4~24.2μm. Guard cell width in sports variety was longer than in original variety.

结果表明：叶片气孔密度的变化范围在91~173个／平方公厘，保卫细胞长度变化在25.8~32.4μm之间；保卫细胞宽度变化在18.4~24.2μm之间，芽变品种的保卫细胞的宽度有变长的趋势。

When plant roots are treated with PEG 6000 for halfhour,the ABA content and distribution in mesophyll cells maintain con-stant,but ABA contained in apoplast of epidermal and guard cells increas-es significantly.

植株根系，以20％PEG 6000处理30min后，叶肉细胞中ABA含量和分布没有变化，但表皮细胞的质外体中ABA含量明显增加，值得注意的是保卫细胞背壁中ABA含量大增，且沿质膜处密集有ABA的分布。

There are three types of chloroplast-containing cells: palisade mesophyll cells, spongy mesophyll cells, guard cells.

在叶片中，有叶绿体的细胞包括三种：栅状叶肉细胞、海绵叶肉细胞、保卫细胞。

Considerable progress has recently been made in studies of the specialized structure and function of guard cells and the mechanisms of stomatal movement.

保卫细胞的特殊结构和气孔功能密切相关，对保卫细胞壁特性、质膜上的各种结合蛋白、质膜和液泡膜上的离子通道的研究，以及对细胞骨架和气孔运动的关系的探索为阐明气孔运动的机理提供了更多的依据。

It was possible that the direct transport of JA from unwounded tissue to wounded site could account for the increase of JA after leaf wounding.

用免疫荧光显微镜技术和免疫胶体金电镜技术证明JA在蚕豆叶片下表皮和气孔保卫细胞上是普遍存在的，它主要分布在保卫细胞的叶绿体、细胞核和细胞壁上；叶片的局部灼伤可提高JA在质外体和气孔保卫细胞中水平。

Under the condition of irrigation, the length of guard cells in wheat flag leaf were shorter relatively, the range of their distribution was more centralized; in the dryland the length of guard cells in wheat flag leaf w...

在灌溉条件下，旗叶保卫细胞相对较短，分布范围较集中，在旱地中，旗叶保卫细胞相对较长，分布范围也较集中。在水地和旱地中，小麦旗叶保卫细胞长度分布相同者一般为耐旱性较强的品种。反之，则为耐旱性较差的品种。

The result using inhibitors of Ca〓 channels supported above observation. When Ca〓 channels in plasma membrane were blocked by LaCl〓, verapamil or nifedipine, and the Ca〓 channels in endomembranes opened naturally, extracellular CaM couldn't induce 〓 increase. When Ca〓 channels in endomembranes were blocked by ruthenium red and the Ca〓 channels in plasma membrane opened naturally, extracellular CaM induced Ca〓 increase in guard cells, but the extent of Ca〓 increase was lower than that of control.

使用质膜Ca〓通道抑制剂LaCl〓、异博定、尼群地平及细胞内Ca〓通道抑制剂钌红的结果支持这种推测：在质膜Ca〓通道被阻断、细胞内Ca〓通道仍正常开放的情况下，保卫细胞〓不能被CaM诱导增加；细胞内Ca〓通道被抑制、质膜Ca〓通道正常开放的条件下，细胞外CaM诱导保卫细胞内〓升高的幅度不能达到不使用Ca〓通道抑制剂的水平。

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％。