保卫细胞是指植物茎、叶等的表皮上具有叶绦粒而通常作半月形的两个相邻的细胞。保卫细胞间的空隙就是气孔。保卫细胞的膨压随着进行光合作用的强度和所形成的碳水化合物的多少而有增减,也就影响气孔开闭的大小。保卫细胞的构造、形状、数量、排列和位置,随植物种类和生活环境而异。
Microinjection into one guard cell with CAT 20U/ml comp1etely inhibited thegeneration of H2O2 in the microinjected guard cell (FigUre 9).
在保卫细胞内显微注射CAT可完全阻止SA导致的DCF荧光增强(图9)。
参考来源 - 过氧花氢参与了水杨酸诱导的蚕豆气孔关闭过程The difference between them reached the highly significant level. These plants with stoma guard cell circumferences shorter than 103.3μm were haploids ones, and those with stoma guard cell circumferences longer 103.3μm were diploid ones.
单倍体植株与二倍体种子来源植株之间叶片气孔保卫细胞外围周长值的差异极显著,周长值小于103.3μm的为单倍体,大于103.3μm为二倍体。
参考来源 - 辣椒花药小孢子培养及其胚状体发生机理研究·2,447,543篇论文数据,部分数据来源于NoteExpress
但当基因突变时,它将不能适当的保卫细胞。
But when the gene mutates, it stops guarding cells properly.
多数真红树植物气孔在表皮下陷,发生于保卫细胞形成之后。
Most of the true mangrove plants have sunken stomata, which occurred after the formation of guard cells.
因此可利用测量气孔保卫细胞长度的方法鉴定花粉植株的倍性。
The method for measurement of the length of stoma guard cell could be used to identify ploidy.
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