以茎瘤芥(Brassica juncea Coss.var.tumida Tsen et Lee)黑斑病病株为试材,对黑斑病菌5.8 S rDNA及其侧翼ITS区序列进行克隆、测序和比对分析。结果表明,5个供试病菌碱基序列同芸薹链格孢的碱基序列相似度达到99.68%,不存在大于3 bp的...以茎瘤芥(Brassica juncea Coss.var.tumida Tsen et Lee)黑斑病病株为试材,对黑斑病菌5.8 S rDNA及其侧翼ITS区序列进行克隆、测序和比对分析。结果表明,5个供试病菌碱基序列同芸薹链格孢的碱基序列相似度达到99.68%,不存在大于3 bp的碱基差异;而与甘蓝链格孢和萝卜链格孢的碱基差异较明显,均存在大于3 bp的碱基差异,且存在大量的缺失片段。初步确定引起茎瘤芥黑斑病的病原菌为芸薹链格孢。展开更多
Two transcripts of T gene, T1170 and T1243, were obtained from the mitochondrial cDNA of tuber mus- tard CMS line. T1243 was a transcript with an intron unspliced, which has the basic characteristics of type Ⅱ intron...Two transcripts of T gene, T1170 and T1243, were obtained from the mitochondrial cDNA of tuber mus- tard CMS line. T1243 was a transcript with an intron unspliced, which has the basic characteristics of type Ⅱ intron. The expressions of the two transcripts were analyzed by reverse transcription PCR (RT-PCR). The results showed that, at seedling stage, the expression of T gene was mainly in the form of T1170 but decreased with the development gradually, while the expression abundance of another tran- script, T1243, increased gradually. The T1243 was prevalent at the profuse flowering stage. The expression pattern was confirmed by Northern blot analysis. These results suggested that the alternative spliced mitochondrial T gene transcripts were related to CMS of tuber mustard.展开更多
文摘以茎瘤芥(Brassica juncea Coss.var.tumida Tsen et Lee)黑斑病病株为试材,对黑斑病菌5.8 S rDNA及其侧翼ITS区序列进行克隆、测序和比对分析。结果表明,5个供试病菌碱基序列同芸薹链格孢的碱基序列相似度达到99.68%,不存在大于3 bp的碱基差异;而与甘蓝链格孢和萝卜链格孢的碱基差异较明显,均存在大于3 bp的碱基差异,且存在大量的缺失片段。初步确定引起茎瘤芥黑斑病的病原菌为芸薹链格孢。
文摘Two transcripts of T gene, T1170 and T1243, were obtained from the mitochondrial cDNA of tuber mus- tard CMS line. T1243 was a transcript with an intron unspliced, which has the basic characteristics of type Ⅱ intron. The expressions of the two transcripts were analyzed by reverse transcription PCR (RT-PCR). The results showed that, at seedling stage, the expression of T gene was mainly in the form of T1170 but decreased with the development gradually, while the expression abundance of another tran- script, T1243, increased gradually. The T1243 was prevalent at the profuse flowering stage. The expression pattern was confirmed by Northern blot analysis. These results suggested that the alternative spliced mitochondrial T gene transcripts were related to CMS of tuber mustard.
