真菌诱导子对南方红豆杉细胞生长及紫杉醇合成的影响
2017-10-13徐志荣赵英杰王婷魏赛金
徐志荣+赵英杰+王婷+魏赛金



摘要:用真菌诱导子处理南方红豆杉(Taxus chinensis var. mairer)悬浮细胞,测定细胞生长指数、紫杉醇含量及其细胞酶活的变化,初步探讨真菌诱导子对南方红豆杉悬浮细胞生长的影响。结果表明,在细胞悬浮培养第8天加入100 μg/mL真菌诱导子,可明显增加悬浮细胞的生物量,紫杉醇的含量也有提高;添加真菌诱导子能抑制细胞多酚氧化酶(PPO)和苯丙氨酸解氨酶(PAL)的活性,有利于细胞生长。
关键词:南方红豆杉(Taxus chinensis var. mairer);细胞悬浮培养;真菌诱导子;紫杉醇
中图分类号:S791.49;Q813 文献标识码:A 文章编号:0439-8114(2017)17-3283-04
DOI:10.14088/j.cnki.issn0439-8114.2017.17.024
Effects of Fungus Elicitor on the Cells Growth and Paclitaxel Accumulation of
Taxus chinensis var. mairer
XU Zhi-rong, ZHAO Ying-jie, WANG Ting, WEI Sai-jin
(College of Biological Science and Engineering/Jiangxi Agricultural Microbial Resource Development and Utilization Engineering Lab,
Jiangxi Agricultural University, Nanchang 330045, China)
Abstract: Taxus chinensis var. mairer suspension cells were treated with fungal elicitor. The effects of fungal elicitors on the growth of T. chinensis var. mairer suspension cells were studied to measure the changes of cell growth index, paclitaxel content and enzyme activity. The results showed that, when the elicitors were added into the cell cultures at the 8th day, 100 μg/mL fungus elicitor had promoted on the cell growth and the synthesis of paclitaxel; The addition of fungus elicitor promoter inhibited the activity of polyphenol oxidase(PPO) and phenylalanine ammonia(PAL), and it is good for cell growth.
Key words: Taxus chinensis var. mairer; cell suspension cultures; fungus elicitor; paclitaxel
南方紅豆杉(Taxus chinensis var. mairer)又称紫杉,为红豆杉科(Taxaceae)红豆杉属(Taxus)植物,是红豆杉的1个变种,主要分布于中国南方地区,其树皮中含有紫杉醇[1]。紫杉醇是红豆杉属植物的次生代谢产物,是一种对治疗肺癌、卵巢癌等有特效的抗癌药物[2]。目前紫杉醇主要来源是从红豆杉属植物的树皮、根部中提取,含量极低,且红豆杉属植物生长速度缓慢,以致于紫杉醇的消费每年都是需大于供[3]。为了扩大来源以满足市场需求,人们对红豆杉属植物愈伤组织细胞悬浮培养进行了深入的研究,尤其对外植体的选择、培养基的组成等做了大量的优化研究,以此来提高紫杉醇含量[4]。虽然进行了大量的研究试验,但仍未解决其产业发展的需求。因此,探究一种新的方式以提高紫杉醇的产量具有重要的现实意义。
真菌诱导子是诱导植物细胞生长和次级代谢产物合成的一类物质,包括真菌菌体、菌液浓缩物和菌液提取物、菌丝体高温处理后的可溶性成分、细胞壁降解成分、蛋白质和肽类等[5]。……
