Biotechnology Bulletin ›› 2018, Vol. 34 ›› Issue (6): 54-58.doi: 10.13560/j.cnki.biotech.bull.1985.2017-0920

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Studies on Total RNA Extraction Methods from the Stems of Dendrobium Species

SHAN Ting-ting1 ,CHEN Xiao-mei1 ,GUO Shun-xing1 ,WANG Qian-qing2 ,WANG Ai-rong1   

  1. 1. Institute of Medicinal Plant Development,Peking Union Medical College,Chinese Academy of Medical Sciences,Beijing 100193;
    2. Agriculture College,Ludong Univercity,Yantai 264025
  • Received:2017-10-01 Online:2018-06-26 Published:2018-07-03

Abstract: This work is aimed to establish a fast and efficient method of extracting total RNA from the stem of Dendrobium species for further molecular biology investigation. Seven methods were used to extract the total RNA from the stem of Dendrobium officinale,then gel electrophoresis and UV spectrometer were applied to determine the quality of the extracted total RNA,and the screened method was verified by samples of D. officinale of different growth conditions and times,and of 5 species of Dendrobium. Results showed that the integrity,purity and extraction capacity of the stem total RNA of D. officinale by Improved HUAYUEYANG Quick RNA Isolation Kit((M7)was the best. The stem total RNA,extracted using M7,of D. officinale,of D. nobile,of D. chrysotoxum,of D. thyrsiflorum and of D. hercoglossum,and of D. officinale planting in plastic house and greenhouse for 1 year respectively,as well as in plastic house for 3,12 and 24 months respectively,were verified to meet the quality requirements on the integrity,purity and extraction capacity. In conclusion,M7 is suitable for stem total RNA extraction of Dendrobium species for easy handle and fine repeatability.

Key words: Dendrobium species, total RNA extraction, improved HUAYUEYANG Quick RNA Isolation Kit