Suberin deposition and band plasmolysis in the corn (Zea mays L.) root exodermis
Suberin deposition and band plasmolysis in the corn (Zea mays L.) root exodermis
复制标题
DOI：
10.1139/b97-832
复制
发表时间：
1997-07
期刊：
影响因子：
1.1
通讯作者：
Daryl E. Enstone;C. Peterson
中科院分区：
文献类型：
--
作者：
Daryl E. Enstone;C. Peterson
The exodermal Casparian band in corn (Zea mays L.) was first seen 10 mm distal to the kernel 4 days after planting. From its inception, the band usually occupied most of the radial wall (as seen in a cross section of the root). Subsequent maturation of the band around the root was asynchronous into the region of emerging lateral roots. Thus, a continuous apoplastic barrier would have been absent over much of the young root surface. Suberin lamellae development was also asynchronous, as these structures formed in those cells which had Casparian bands. Frequently, a lamella was initially deposited in patches, progressing centripetally until a continuous lipid layer was formed around the cell protoplast. Many instances of band plasmolysis (typical of the endodermis) were observed in the developing uniform exodermis. It could occur in cells with no detectable Casparian bands, suggesting that the tight connection between the plasmalemma and the wall that causes this phenomenon is not due to hydrophobic attract...
