|本期目录/Table of Contents|

[1]孙小龙,付永前.米根霉复合诱变筛选高产L-乳酸的形态突变菌株及碳代谢流分析[J].江苏农业科学,2019,47(01):294-299.
 Sun Xiaolong,et al.Screening of morphological mutant strains with high yield of L-lactic acid by Rhizopus oryzae complex mutagenesis and carbon metabolic flux analysis[J].Jiangsu Agricultural Sciences,2019,47(01):294-299.
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米根霉复合诱变筛选高产L-乳酸的形态
突变菌株及碳代谢流分析
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第47卷
期数:
2019年第01期
页码:
294-299
栏目:
资源与环境
出版日期:
2019-01-05

文章信息/Info

Title:
Screening of morphological mutant strains with high yield of L-lactic acid by Rhizopus oryzae complex mutagenesis and carbon metabolic flux analysis
作者:
孙小龙 付永前
台州学院生命科学学院,浙江台州 318000
Author(s):
Sun Xiaolonget al
关键词:
米根霉L-乳酸碳代谢流形态突变菌株诱变选育
Keywords:
-
分类号:
S182
DOI:
-
文献标志码:
A
摘要:
以米根霉(Rhizopus oryzae)NRRL 395为出发菌株,通过紫外线与亚硝基胍(nitroso-guanidin,简称NTG)复合诱变,筛选出几株形态突变株,其L-乳酸产量较高,在此基础上,对得到的3株形态突变菌株LA-UN-1、LA-UN-2、LA-UN-3和出发菌株NRRL 395进行代谢流分析。结果表明,在发酵初期,不同菌种的碳代谢流整体变化差别并不明显,尤其是流向有机酸合成的碳源所占的比例基本相同,此时细胞更多地合成生物量以及代谢所需的蛋白,对于球状菌体,其流向生物合成所需的碳相对较多;当发酵进入后期,碳流更多地用于有机酸的合成,而此时,不同菌体形态的碳代谢流明显发生变化,均匀球状菌体更有利于碳代谢流的流动,尤其是LA-UN-1球状菌体碳代谢流更易于流向L-乳酸合成途径,而原始菌株流向L-乳酸合成途径的碳流最小。
Abstract:
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参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2017-09-01
基金项目:国家自然科学基金(编号:21106091)。
作者简介:孙小龙(1989—),女,江苏盐城人,硕士,主要从事可再生资源的开发利用及微生物的代谢调控研究。E-mail:377801324@qq.com。
通信作者:付永前,博士,副教授,主要从事微生物代谢及可再生资源的研究。Tel:(0576)88660338;E-mail:fuyq@tzc.edu.cn。
更新日期/Last Update: 2019-01-05