The invention belongs to the technical field of ecological planting of Astragalus membranaceus, and provides a seed dressing agent of Astragalus membranaceus and a method for promoting the growth of Astragalus membranaceus and the accumulation of flavonoids in the root of Astragalus membranaceus in order to solve the problems of cultivation and quality improvement of Astragal The seed culture was prepared by fermentation of Pseudomonas poae strain KSC02, an endophytic strain of Astragalus membranaceus. The specific preparation method was as follows: strain KSC02 was prepared into seed culture and transferred to LB liquid medium. The culture was cultured overnight in a shaking bed at 28 C and 180 rpm, centrifuged and collected bacterial precipitation; 300 mM MgCl2 washed bacterial precipitation twice, then the suspended bacterial precipitated in MgCl2 solution and adjusted. The whole OD600 to 1.0, prepared seed dressing agent, stored at 4 for reserve. The yield and quality of Astragalus membranaceus under stress conditions were improved, and it was expected to be developed as a green pesticide, which could improve the quality and yield of medicinal materials and reduce the chemical synthetic pesticides and fertilizers.
【技术实现步骤摘要】
一种黄芪拌种剂及其促进黄芪生长和黄芪根黄酮类化合物积累的方法
本专利技术属于黄芪生态种植
,具体涉及一种黄芪拌种剂及其促进黄芪生长和黄芪根黄酮类化合物积累的方法,采用内生菌Pseudomonaspoae菌株KSC02拌种,促进干旱胁迫条件下黄芪根生物量和根冠比的增加,以及药用部位根中黄酮类活性成分芒柄花苷和毛蕊异黄酮葡萄糖苷含量的增加。
技术介绍
现有研究表明,内生菌通过合成植物生长激素吲哚乙酸(indoleaceticacid,IAA)、利用植物体内乙烯合成前体—1-氨基环丙烷-1-羧酸(1-aminocyclopropane-1-carboxylicacid,ACC)作为碳源等方式,在植物生长、次生代谢物质合成积累及缓解环境胁迫等方面发挥着积极作用。针对内生菌在药用植物中的作用,国内外学者也进行了探索性研究,如已有研究发现,茅苍术内生细菌荧光假单胞菌具有促进苍术内酯合成与积累的作用;内生菌铜绿假单胞菌Pseudomonasaeruginosa具有促进牛膝生长的作用;内生真菌Trichodermaatroviride具有促进丹参毛状根生长及丹参酮积累的作用 ...
【技术保护点】
1.一种黄芪拌种剂,其特征在于:由黄芪内生菌草假单胞菌(Pseudomonas poae)菌株KSC02发酵制备而成,具体制备方法为:草假单胞菌(Pseudomonas poae)菌株KSC02制备成种子培养物,按照1‰接种量转接于LB液体培养基中,28℃、180 rpm摇床培养过夜, 培养物4℃、8000 rpm离心10 min,收集菌体沉淀;300 mM MgCl2洗涤菌体沉淀2次后,重新悬浮菌体沉淀于MgCl2溶液中,并调整OD600至1.0,制备得拌种剂,4℃保存备用。
【技术特征摘要】
1.一种黄芪拌种剂,其特征在于:由黄芪内生菌草假单胞菌(Pseudomonaspoae)菌株KSC02发酵制备而成,具体制备方法为:草假单胞菌(Pseudomonaspoae)菌株KSC02制备成种子培养物,按照1‰接种量转接于LB液体培养基中,28℃、180rpm摇床培养过夜,培养物4℃、8000rpm离心10min,收集菌体沉淀;300mMMgCl2洗涤菌体沉淀2次后,重新悬浮菌体沉淀于MgCl2溶液中,并调整OD600至1.0,制备得拌种剂,4℃保存备用。2.根据权利要求1所述的一种黄芪拌种剂,其特征在于:所述黄芪内生菌株草假单胞菌(Pseudomonaspoae)菌株KSC02于2017年11月21日保藏于中国微生物菌种保藏管理委员会普通微生物中心,保藏号为CGMCCNo.1494...
【专利技术属性】
技术研发人员:孙海峰,高红,柴智,孔留利,曹秋芬,高建平,开国银,郭兰萍,
申请(专利权)人:山西大学,
类型:发明
国别省市:山西,14
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