分子植物育种 - page 5

分子植物育种
(
网络版
), 2016
,
14
,
1080-1086
Fenzi Zhiwu Yuzhong (Online), 2016, Vol.14, 1080-1086
Copyright © 2016 BioPublisher 1080
研究报告
Research Report
炭样小单孢菌
JXNU-1
产抗生素
JX
对嗜根考克氏菌肽聚糖合成的影
响及其机理
陈鹏
,
黄运红
,
李非
,
李素珍
,
龙中儿
江西师范大学生命科学学院
,
南昌
, 330022
通讯作者
,
作者
分子植物育种
, 2016
,
14
,
12
doi: 10.5376/mpb.cn.2016.14.0012
这是一篇采用
Creative Commons Attribution License
进行授权的开放取阅论文。只要对本原作有恰当的引用,版权所有人允许并同意第三方无条
件的使用与传播。
引用格式
(
中文
)
陈鹏等
, 2016,
炭样小单孢菌
JXNU-1
产抗生素
JX
对嗜根考克氏菌肽聚糖合成的影响及其机理
,
分子植物育种
(online), 14(12): 1080-1086 (doi:
10.5376/mpb.cn.2016.14.0012)
引用格式
(
英文
)
Chen et al., 2016,
The effect and its mechanism of the nucleoside antibiotics JX from
Micromonospora carbonacea
JXNU-1 on biosynthesis of
peptidoglycan in
Kocuria rhizophila
, Fenzi Zhiwu Yuzhong (online) (Molecular Plant Breeding), 14(12): 1080-1086 (doi: 10.5376/mpb.cn.2016.14.0012)
摘 要
为了揭示一株具有广谱抗菌活性炭样小单孢菌
JXNU-1
产的核苷类抗生素
JX
对嗜根考克氏菌肽聚糖合成的影响,
本研究采用超声破壁、称重法研究抗生素对嗜根考克氏菌细胞壁含量变化,采用
iTRAQ
技术对抗生素处理前、后嗜根考克
氏菌的蛋白质组进行比较分析。结果显示,在抗生素
JX
作用下,嗜根考克氏菌细胞分裂被抑制,细胞壁含量升高;
iTRAQ
技术鉴定了抗生素胁迫下的嗜根考克氏菌细胞中的
1 780
个蛋白,其中差异表达蛋白
149
个,包括表达上调蛋白
106
个,表
达下调蛋白
43
个,上调表达蛋白中包括有一与肽聚糖合成的相关酶
MurG
。本研究为揭示炭样小单孢菌
JXNU-1
产抗生素
JX
的抗菌作用机制提供了基础数据。
关键词
炭样小单孢菌
,
嗜根考克氏菌
,
肽聚糖
,
定量蛋白质组学
,
同位素标记相对和绝对定量技术
The effect and its mechanism of the nucleoside antibiotics JX from
Micromonospora carbonacea
JXNU-1 on biosynthesis of peptidoglycan
in
Kocuria rhizophila
Chen Peng , Huang Yunhong , Li Fei , Li Suzhen , Long Zhonger
College of Life Sciences, Jiangxi Normal University, Nanchang, 330022
Corresponding author,
;
Authors
Abstract
In order to reveal nucleoside antibiotics JX produced by a strain of
Micromonospora carbonaceous
JX-1, which have
broad spectrum of antimicrobial activity, had effect on peptidoglycan synthesis of
Kocuria rhizophila
, this research used ultrasound
and weighing method to observe the change of content of cell wall in
K. rhizophila
under the effect of antibiotics. We used isobaric
tags for relative and absolute quantization (iTRAQ) to analyze the proteomics of
K. rhizophila
before or after the treatment of
antibiotics. Result showed that the cell division of
K. rhizophila
was inhibited, and the content of cell wall of
K. rhizophila
was
increased under the influence of antibiotics JX. Based on iTRAQ, 1780 proteins were identified in the cell of
K. rhizophila
under the
stress of antibiotics. Among them, 149 were differential expression protein, including 106 proteins up-regulated and 43 proteins
down-regulated. The up-regulated proteins contained the enzyme Murg which involved in the biosynthesis of peptidoglycan. This
research provided the basic data about antimicrobial mechanisms of the antibiotics JX from
M. carbonacea
JXNU-1.
Keywords
Micromonospora carbonacea
,
Kocuria rhizophila
, Peptidoglycan, Quantitative proteomic, Isobaric tags for relative
and absolute quantitation
研究背景
炭样小单孢菌
(
Micromonospora carbonacea
)
在分类学上属于小单孢菌属
(Buchanan and Gibbons,
1984)
。研究发现,炭样小单孢菌产生的次级代谢产
物具有抗菌、抗肿瘤及免疫调节等多种生物活性
(Sanders and Sanders, 1974;
江红等
, 2007)
,因而受
收稿日期:
2016
04
22
接受日期:
2016
05
25
发表日期:
2016
05
28
基金项目:本研究由国家自然科学基金项目
(31160029
31360018)
和江西省自然科学基金项目
(20132BAB204007)
同资助
1,2,3,4 6,7,8,9,10,11,12
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