Developmental Process of Mulberry Idioblast in Relation to Calcium Deposition
Developmental Process of Mulberry Idioblast in Relation to Calcium Deposition
复制标题
桑成纤维细胞发育过程与钙沉积的关系
DOI：
10.11416/jibs2001.70.63
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发表时间：
2001
影响因子：
--
通讯作者：
T. Furusawa
中科院分区：
文献类型：
--
作者：
Y. Sugimura;I. Uemura;T. Furusawa
以桑葚幼苗叶片为材料，用扫描电镜观察了异细胞的发育过程。从茎尖开始编号的第1和第2叶在其近轴面上具有不同类型的异细胞突起：小的、圆形的、具有尖锐尖端的突起（A型）和不同大小的锥形突起（B、C和D型）。第3片叶表面富含E型和F型突起，突起由锥形突起和基部突起组成。锥形部分的高度减小，以形成G型突起，该G型突起显示出具有较小锥形突起的圆顶状形式。从第3片叶开始，向下叶的近轴面全部被G型异细胞突起占据。钙（Ca）沉积密切相关的异胚细胞形态的这种顺序变化，开始钙沉积从D型突起和E，F和G型突起的蛋形结构的领导连续沉积。远轴叶表面也存在类似类型的异细胞，其密度为近轴叶表面的五分之一。
Using a series of leaves from mulberry seedlings, the developmental process of idioblast was surveyed by scanning electron microscopy (SEM). The 1st and 2nd leaves numbered from the shoot top had various types of idioblast protrusions on their adaxial surface; a small, round form with a sharp tip (A type) and a cone-shaped form with different sizes (B, C and D types). The surface of the 3rd leaf was rich in the E and F type protrusions which were composed of cone-shaped and basal portions. The cone-shaped portion decreased in height to form a G type protrusion showing a dome-like form with a smaller cone-shaped projection. All of the adaxial surface of the downward leaves from the 3rd leaf was occupied by the G type of idioblast protrusion. Calcium (Ca) deposition was closely associated with such sequential changes in idioblast morphology, starting Ca deposition from the D type protrusion and leading continual deposition in the egg-shaped structure of E, F and G type protrusions. Similar types of idioblasts were also present in abaxial leaf surface, which was one-fifth of adaxial idioblast density.