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Construction and Characterization of cDNA Library from Water-Stressed Plantlets Regenerated in vitro of Populus hopeiensis
作者单位:Wang Ze-liang Zhang zhi-yi* Lin Shan-zhi Lin Yuan-zhen Zhang Qian Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants,Ministry of Education,Beijing Forestry University,Beijing 100083,P. R. China
基金项目:Supported by the National "863" Project (Grant No.2002AA2Z4011)
摘    要:In order to isolate and clone water-stress-responsive genes, total RNA was extracted from water-stressed plantlets regenerated in vitro of Populus hopeiensis using a QIAGEN RNeasy Plant Mini Kit. CDNA, synthesized by LD-PCR with the SMART cDNA Library Construction Kit, was n vitro packaged into a phage λTriplEx2 vector. The resulting primary library and amplified library have a titer of 1.68×10i6 and 1.69×109 pfu·mL–1 respectively. The combination ratio reached 98.8% and the average size of inserts was about 800 bp. In addition, the percentage of inserted fragments (> 400 bp) was approximately 90%. The results indicate that a cDNA library has been successfully constructed.

关 键 词:干旱现象 森林保护 气候灾害 水压 DNA

Construction and Characterization of cDNA Library from Water-Stressed Plantlets Regenerated in vitro of Populus hopeiensis
Wang Ze-liang,Zhang zhi-yi,Lin Shan-zhi,Lin Yuan-zhen,Zhang Qian. Construction and Characterization of cDNA Library from Water-Stressed Plantlets Regenerated in vitro of Populus hopeiensis[J]. Forestry Studies in China, 2005, 7(3): 39-42
Authors:Wang Ze-liang  Zhang zhi-yi  Lin Shan-zhi  Lin Yuan-zhen  Zhang Qian
Affiliation:Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, Beijing Forestry University, Beijing 100083, P. R. China
Abstract:In order to isolate and clone water-stress-responsive genes, total RNA was extracted from water-stressed plantlets regenerated in vitro of Populus hopeiensis using a QIAGEN RNeasy Plant Mini Kit. CDNA, synthesized by LD-PCR with the SMART cDNA Library Construction Kit, was in vitro packaged into a phage λTriplEx2 vector. The resulting primary library and amplified library have a titer of 1.68×106 and 1.69×109 pfu·mL-1 respectively. The combination ratio reached 98.8% and the average size of inserts was about 800 bp. In addition, the percentage of inserted fragments (> 400 bp) was approximately 90%. The results indicate that a cDNA library has been successfully constructed.
Keywords:cDNA library   Populus hopeiensis   water-stressed plantlet   characterization
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