JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2018, Vol. 42 ›› Issue (01): 60-66.doi: 10.3969/j.issn.1000-2006.201702034

Previous Articles     Next Articles

Physiological features of C and N metabolism during shoot elongation in Phyllostachys edulis f. tubaeformis and its reverse mutant

YUE Jinjun1,2, WANG Tao3, PENG Zhenhua1,3, LI Lubin1,3*, GU Xiaoping2, YUAN Jinling2, WU Xiaoli2,LIU Zheng'e2   

  1. 1. International Center for Bamboo and Rattan, Beijing 100102, China; 2.Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou 311400, China; 3. Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
  • Online:2018-03-30 Published:2018-03-30

Abstract: 【Objective】Internodal length is an important phenotypic parameter affecting the usage of bamboo timber in order to explore the mechanism of its growth.【Method】The physiological features of carbohydrate and nitrogen metabolism in shoots and sheaths were analyzed using Phyllostachys edulis f. tubaeformis and its reverse mutant as subjects of the study.【Result】The contents of sucrose, fructose and acid invertase activity were significantly lower, while neutral invertase activity was significantly higher in the shoots of Ph. edulis f. tubaeformis than that in its reverse mutant, and there was no significant difference in glucose content. Protein content and glutamate dehydrogenase activity were significantly lower, while ammonium nutrient content was significantly higher in the shoots of Ph. edulis f. tubaeformis than that in its reverse mutant, and there was no significant difference in nitrate nitrogen content. These characteristics of carbohydrate and nitrogen metabolism demonstrated no significant difference in sheaths.【Conclusion】Based on these results, the decrease in sucrose content and abnormality in nitrogen metabolism in the shoots were supposed to be reasons for internode shortening in Ph. edulis f.tubaeformis. This study investigated for the first time in physiological mechanism of internode shortening in Ph. edulis f. tubaeformis, thus providing a basis for further genomic studies.

CLC Number: