三七NAC轉(zhuǎn)錄因子基因PnNAC1的克隆及表達(dá)特性分析
[Abstract]:In order to reveal the regulatory mechanism of resistance and defense response of Panax notoginseng, the full-length cDNA of a NAC transcription factor of Panax notoginseng was cloned and analyzed. Using one-year-old Panax notoginseng seedlings as materials, primers were designed according to the transcription group Unigene encoding NAC transcription factor, and a novel NAC transcription factor gene named PnNAC1. was cloned by rapid amplification of cDNA terminal technique. Sequence analysis showed that 815 bp, contained a 5 'untranslated region of 24 bp and a 3' untranslated region of 215 bp, as well as an open reading frame of 576 bp, encoding a total of 191 amino acids and a conserved NAC domain. The results of real-time fluorescence quantitative PCR showed that methyl jasmonate pretreatment significantly increased the transcription level of PnNAC1 in roots of Panax notoginseng. After inoculation with Fusarium solanacearum, the expression of PnNAC1 increased further, and reached the maximum at 4 h after inoculation. In aseptic water pretreated Panax notoginseng, PnNAC1 also responded rapidly to Fusarium solanacearum infection, but the expression level was significantly lower than that of methyl jasmonate pretreatment. The expression of PnNAC1 in leaves was inhibited after inoculation with Radix Ginseng. The expression of PnNAC1 was induced by methyl jasmonate, ethephon, salicylic acid and hydrogen peroxide in roots of Panax notoginseng. It is suggested that PnNAC1 responds to several stress-related signal molecules and participates in the defense response of Panax notoginseng to Fusarium solanacearum and Radix Ginseng.
【作者單位】: 昆明理工大學(xué)生命科學(xué)與技術(shù)學(xué)院;
【基金】:國(guó)家自然科學(xué)基金項(xiàng)目(81560610) 云南省應(yīng)用基礎(chǔ)研究計(jì)劃項(xiàng)目(2014FA003)
【分類(lèi)號(hào)】:S567.236
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