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Novel protocol to identify true hybrids in normal oleate x high oleate crosses in peanut Electron. J. Biotechnol.
Wang,Chuan Tang; Yu,Shan Lin; Zhang,Shu Wei; Wang,Xiu Zhen; Tang,Yue Yi; Zhang,Jian Cheng; Chen,Dian Xu.
A novel hybrid identification protocol was developed for F0:1 peanut seeds resulting from crosses between normal oleate cultivars with wild type FAD2B gene and high oleate genotypes with an A insertion in FAD2B gene. Presence of a series of overlapped peaks in trace file of the PCR product amplified with bF19/R1 primers was an indication of hybridity. This protocol may facilitate high oleate breeding and genetic studies in peanut.
Tipo: Journal article Palavras-chave: Identification; NIRS; PCR; Peanut; True hybrid.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000500018
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Identification of chilling-responsive transcripts in peanut (Arachis hypogaea L.) Electron. J. Biotechnol.
Tang,Yue Yi; Wang,Chuan Tang; Yang,Guan Pin; Feng,Tong; Gao,Hua Yuan; Wang,Xiu Zhen; Chi,Xiao Yuan; Xu,Ya Long; Wu,Qi; Chen,Dian Xu.
To isolate differentially expressed peanut genes responsive to chilling, a suppression subtractive hybridization (SSH) cDNA library was constructed for a chilling tolerant peanut cultivar A4 with mRNAs extracted from the seeds imbibed at 2ºC and 15ºC, respectively, for 24 hrs. A total of 466 cDNA clones were sequenced, from which 193 unique transcripts (73 contigs and 120 singlets) were assembled. Of these unique transcripts, 132 (68.4%) were significantly similar to the sequences in GenBank non-redundant (nr) protein database, which belonged to diverse functional categories including metabolism, signal transduction, stress response, cell defense and transcriptional regulation. The remaining 61 (31.6%) showed no similarity to either hypothetical or known...
Tipo: Journal article Palavras-chave: Chilling response; Peanut; Real-time quantitative PCR; Suppression subtractive hybridization.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000500005
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Simple method to prepare DNA templates from a slice of peanut cotyledonary tissue for Polymerase Chain Reaction Electron. J. Biotechnol.
Yu,Shu Tao; Wang,Chuan Tang; Yu,Shan Lin; Wang,Xiu Zhen; Tang,Yue Yi; Chen,Dian Xu; Zhang,Jian Cheng.
An efficient DNA extraction method was developed for peanut seed, where only 3-5 mg cotyledonary tissue was enough for more than 50 PCR reactions with a reaction volume of 15 μl. Both low copy number and high copy number DNA sequences were successfully amplified. Processing one seed sample only took about half an hour. Sampling had no significant effects on germination and development. The DNA extraction method makes it possible to identify transformants and conduct molecular marker studies prior to sowing, and thus may greatly hasten research progress.
Tipo: Journal article Palavras-chave: Cotyledonary tissue; DNA extraction; Groundnut; PCR; Peanut.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000400012
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