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Isolation and analysis of genes induced by rehydration after serious drought in broomcorn millet (Panicum miliaceum L.) by SSH

Published online by Cambridge University Press:  20 March 2007

Lin Fan-Yun ,
Hu Yin-Gang ,
Song Guo-Qi ,
Zhang Hong ,
Liu Tian-Ming  and
He Bei-Ru
Lin Fan-Yun
Affiliation:
College of Agronomy, Northwest A & F University, Yangling 712100, China
Hu Yin-Gang*
Affiliation:
College of Agronomy, Northwest A & F University, Yangling 712100, China Yangling Branch of China National Wheat Improvement Center, Northwest A & F University, Yangling 712100, China Shaanxi Key Lab of Molecular Biology for Agriculture, Northwest A & F University, Yangling 712100, China
Song Guo-Qi
Affiliation:
College of Agronomy, Northwest A & F University, Yangling 712100, China
Zhang Hong
Affiliation:
College of Agronomy, Northwest A & F University, Yangling 712100, China Yangling Branch of China National Wheat Improvement Center, Northwest A & F University, Yangling 712100, China
Liu Tian-Ming
Affiliation:
College of Agronomy, Northwest A & F University, Yangling 712100, China
He Bei-Ru
Affiliation:
College of Agronomy, Northwest A & F University, Yangling 712100, China Yangling Branch of China National Wheat Improvement Center, Northwest A & F University, Yangling 712100, China
*
*Corresponding author. E-mail: huyingang8126@yahoo.com
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Abstract

In order to investigate the molecular mechanism of rehydration after serious drought in broomcorn millet (Panicum miliaceum L.), a forward subtracted cDNA library was constructed between normal watered leaves and rehydrated leaves after serious drought conditions, using the suppressive subtraction hybridization (SSH) technique. A total of 60 positive clones were picked out at random from the subtracted library and sequenced, and redundancy sequences were removed after sequence alignment. Based on the results of sequence homologous comparison and function querying, 32 expressed sequence tags (EST) were highly homologous with known ESTs. Most of those sequences were related to either abiotic or biotic stress in plants. Of those sequences, 11 ESTs were homologous with ESTs in rat (Rattus norvegicus) liver after partial hepatectomy. The Blast result of proteins revealed that 28 ESTs were similar to known proteins. The functions of these proteins mainly involve signal transduction, transcription and protein processing. This experiment demonstrated that a range of specific genes was induced and expressed in broomcorn millet during the rehydration stage after serious drought.

Keywords

broomcorn milletdrought stressrehydrationgene expressionsuppressive subtraction hybridization
Type
Research Article
Information
Chinese Journal of Agricultural Biotechnology , Volume 3 , Issue 3 , December 2006 , pp. 237 - 242
Copyright
China Agricultural University and Cambridge University Press 2006

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