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毛竹茎竿纤维细胞发育过程中酸性磷酸酶的动态变化(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2006年03期
Page:
13-18
Column:
研究论文
publishdate:
2006-03-20

Article Info:/Info

Title:
The Dynamic Changes of Acid Phosphatase during the Fiber Development in Phyllostachys edulis Culm
Article ID:
1000-2006(2006)03-0013-06
Author(s):
GAN Xiao-hong12 DING Yu-long1*
1. Bamboo Research Institute Nanjing Forestry University, Nanjing 210037, China; 2. College of Life Science, China West Normal University, Nanchong 637002, China
Keywords:
Phyllostachys edulis Acid phosphatase Fiber development Programmed cell death
Classification number :
S718.43
DOI:
10.3969/j.jssn.1000-2006.2006.03.002
Document Code:
A
Abstract:
The distribution of acid phosphatase during fiber development in the culm of Phyllostachys edulis (Cart.) H. De Lehaie was studied by using the lead precipitation method. Acid phosphatase (APase) was mainly localized on the plasmalemma and nuclear chromatin at the stage of fiber initial formation. With the primary wall formation, the enzymatic activity in the cells was examined on the plasmalemma, tonoplast and nuclear chromatin. The enzyme activity on the nuclear chromatin would condensely be accumulated at the later stage of fiber primary wall formation. As fiber secondary wall formed, APase was deposited on the plasmalemma, the disintegrated cytoplasm, mitochondrion and tonoplast and the agglutinated chromatin. With the continual thickening of the secondary wall, APase activity on the plasmalemma, plasmodesmata, plasmalemma invagination and transfer vesicles and agglutinated chromatin of fiber were persistent for many years. These findings indicated that the APase condensely accumulated on the nuclear chromatin was closely related to the occurrence of fiber programmed cell death (PCD), and APase had functions in the whole formation of primary and secondary wall, and the disintegration of protoplast during PCD, and the persistent APase was correlated to the long-lived characteristic of fiber.

References

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Last Update: 2013-05-20