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Construction of cDNA expression library of watermelon for isolation of ClWRKY1 transcription factors gene involved in resistance to Fusarium wilt.
Indian J Biochem Biophys ; 2014 Aug; 51(4): 302-307
Article ي En | IMSEAR | ID: sea-154252
Full-length cDNAs are very important for genome annotation and functional analysis of genes. The number of full-length cDNAs from watermelon remains limited. Here we report first the construction of a full-length enriched cDNA library from Fusarium wilt stressed watermelon (Citrullus lanatus Thunb.) cultivar PI296341 root tissues using the SMART method. The titer of primary cDNA library and amplified library was 2.21 × 106 and 2.0 × 1010 pfu/ml, respectively and the rate of recombinant was above 85%. The size of insert fragment ranged from 0.3 to 2.0 kb. In this study, we first cloned a gene named ClWRKY1, which was 1981 bp long and encoded a protein consisting of 394 amino acids. It contained two characteristic WRKY domains and two zinc finger motifs. Quantitative real-time PCR showed that ClWRKY1 expression levels reached maximum level at 12 h after inoculation with Fusarium oxysporum f. sp. niveum. The full-length cDNA library of watermelon root tissues is not only essential for the cloning of genes which are known, but also an initial key for the screening and cloning of new genes that might be involved in resistance to Fusarium wilt.
الموضوعات
Key words
النص الكامل: 1 الفهرس: IMSEAR الموضوع الرئيسي: Recombination, Genetic / Transcription Factors / Molecular Sequence Data / Base Sequence / Amino Acid Sequence / Sequence Homology, Amino Acid / Genes, Plant / DNA, Complementary / DNA Primers / RNA, Plant اللغة: En مجلة: Indian J Biochem Biophys السنة: 2014 نوع: Article
النص الكامل: 1 الفهرس: IMSEAR الموضوع الرئيسي: Recombination, Genetic / Transcription Factors / Molecular Sequence Data / Base Sequence / Amino Acid Sequence / Sequence Homology, Amino Acid / Genes, Plant / DNA, Complementary / DNA Primers / RNA, Plant اللغة: En مجلة: Indian J Biochem Biophys السنة: 2014 نوع: Article