Welcome to visit Scientia Silvae Sinicae，Today is

Scientia Silvae Sinicae ›› 2009, Vol. 12 ›› Issue (3): 24-28.doi: 10.11707/j.1001-7488.20090305

Previous Articles     Next Articles

Components and Dynamics of Vegetative Storage Proteins in the Branch of Ginkgo biloba

Guo Hongyan1,2,Wu Qingxia2,Peng Fangren2   

  1. (1. College of Forestry, Shanxi Agricultural University Taigu 030801; 2. College of Forest Resources and Environment, Nanjing Forestry University Nanjing 210037)
  • Received:2008-05-19 Revised:1900-01-01 Online:2009-03-25 Published:2009-03-25

PDF (PC)

694

Abstract:

Abstract: The components and dynamics of vegetative storage proteins(VSPs) in branches of Ginkgo biloba were investigated by SDSPAGE and electronic microscopy. The results showed that VSPs localized mainly in bark and xylem of branches. The content of VSPs in oneyearold branches was higher than that in twoyearold branches, and the content of VSPs in bark was higher than that in xylem. The components of VSPs in branches were composed of molecular weight 36 ku and 32 ku proteins. The seasonal fluctuation of VSPs could be divided into accumulation and degradation two stages. In the accumulation stage, the VSPs were accumulated in the middle of May with generation of the new leaves, and its content reached the peak in December. In the degradation stage, the VSPs were degraded to meet the need of budssprouting in the next spring, and degraded completely in the beginning of April.

Key words: Key words: Ginkgo biloba,  vegetative storage proteins(VSPs), seasonal fluctuation, SDSPAGE, electronic microscopy