Welcome to visit Scientia Silvae Sinicae,Today is

Scientia Silvae Sinicae ›› 2014, Vol. 50 ›› Issue (8): 45-52.doi: 10.11707/j.1001-7488.20140807

Previous Articles     Next Articles

Structure and Development of Tannin Cells in Bark of Hevea brasiliensis

Shi Minjing, Wu Jilin, Hao Bingzhong, Tan Haiyan, Tian Weimin   

  1. Rubber Research Institute, Chinese Academy Tropical of Agricultural Science Key Laboratory for Biology and Genetic Resources of Rubber Tree, Ministry of Agriculture State Key Laboratory Breeding Base Hainan Provincial Laboratory for Tropical Crops Cultivation & Physiology Danzhou 571737
  • Received:2013-05-29 Revised:2014-01-03 Online:2014-08-25 Published:2014-07-31
  • Contact: 田维敏

Abstract:

The morphological structure and development of tannin cells in bark of Hevea brasiliensis were studied by using transmission electron microscopy and light microscopy. The results showed that tannin-like materials distributed in all kinds of parenchyma cells in secondary phloem except for companion cells. The tannin-like materials were present in large amounts in the parenchyma cells around the laticifers, the stone cells, cork layer cells and phelloderm cells. Under the electron microscope,four forms of tannin-like materials,i.e., flocculent, irregular, granular and plate-like, could be distinguished in the large central vacuoles of tannin cells. During the course of development of tannin cell, tannin-like materials firstly deposited into small vesicles in cytoplasm,then stored mainly in the large central vacuole along with the synthesis of tannins. As a result, the tannin-like materials filled the large central vacuole of the mature tannin cells. The accumulation of tannin-like materials was largely enhanced by mechanic wounding, over-exploitation,and application of either Ethrel or Jasmonate (JA), reflecting the response of rubber tree to various stress factors.

Key words: Hevea brasiliensis, tannin cell, morphological structure, development

CLC Number: