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分子植物育种
(
网络版
), 2011
,
9
,
1680
-
1691
Fenzi Zhiwu Yuzhong (Online), 2011, Vol.9, 1680
-
1691
http://mpb.
5th
.sophiapublisher.com
1680
研究论文
Research Article
不同保存条件下五种大型海藻的
DNA
提取和
PCR
分析
孙晓宇
1
,
罗丹
1
,
赵翠
1
,
李巍
2
,
刘涛
1
1.
中国海洋大学
,
海洋生物遗传育种研究室
,
青岛
, 266003
2.
全国水产技术推广总站苗种处
,
北京
, 100125
通讯作者
:
liutao@ouc.edu.cn
作者
分子植物育种
, 2011
,
9
,
95
doi: 10.5376/mpb.cn.2011.09.0095
收稿日期:
2011
06
28
接受日期:
2011
07
21
发表日期:
2011
07
26
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
)
孙晓宇等
, 2011,
不同保存条件下五种大型海藻的
DNA
提取和
PCR
分析
,
分子植物育种
(online) Vol.9 No.95 pp.1680-1691 (doi: 10.5376/mpb.
cn.2011.09.0095)
引用格式
(
英文
)
Sun et al., 2011, DNA extraction and PCR analysis of five kinds of large seaweed under different preservation conditions, Fenzi Zhiwu Yuzhong (online)
(Molecular Plant Breeding) Vol.9 No.95 pp.1680-1691 (doi: 10.5376/mpb.cn.2011.09.0095)
研究了海带、亨氏马尾藻、浒苔、龙须菜、长心卡帕藻
5
种大型海藻样品的不同保存条件对其
DNA
提取和分子
遗传学研究的影响。-
20
℃和-
80
℃低温储存能够保证
DNA
提取的纯度和得率,
DNA
浓度范围为
236.8~510.9 ng/μL
,平
360.5 ng/μL,
OD
260
/
OD
280
范围为
1.71~1.93
,平均
1.84
,得率范围为
47.32~102.18 μg/g
,平均
72.00 μg/g
;而硅胶保存法和
压标本法适于野外远距离采样,
DNA
浓度范围为
100.4~246.3 ng/μL
,平均
183.8 ng/μL,
OD
260
/
OD
280
范围为
1.40~1.97
,平均
1.68
,得率范围为
20.02~49.26 μg/g
,平均
36.54 μg/g
。除高温干燥样品外,其它保存条件下样品所提
DNA
的扩增结果稳定
并且
PCR
扩增检测结果与活体样品对照组
DNA
无明显差别,可用于核基因组、线粒体及叶绿体基因组的分子遗传学研究。
关键词
大型海藻
;
保存方法
; DNA
提取
; PCR
DNA Extraction and PCR Analysis of Five Kinds of Large Seaweed under
Different Preservation Conditions
Sun Xiaoyu
1
, Luo Dan
1
, Zhao Cui
1
, Li Wei
2
, Liu Tao
1
1. Laboratory of Genetics and Breeding of Marine Organism, Ocean University of China, Qingdao, 266003, P.R., China
2. Breeding station, National fisheries technology promotion station, Beijing, 100125, P.R., China
Corresponding author, liutao@ouc.edu.cn;
Authors
Abstract
The effect of different preservation methODs on total DNA extraction and molecule genetics research of five seaweed
including Laminaria japonica, Sargassum henlowianum, Gracilaria Lemaneiformis, Kappaphycus alvarezii and Enteromorpha prolifera
was researched. The preservation methODs of cryopreservation (
-
20
and
-
80
) could insure the high purity and yield of DNA.
The concentration of DNA was 236.8~510.9 ng/μL with an average of 360.5 ng/μL, while
OD
260
/
OD
280
was 1.71~1.93 with an average
of 1.84 and the output ranged from 47.32 to 102.18 μg/g with an average of 72.00 μg/g. Storing in silica gel and dring by pressure
were suitable for sampling from remote place. The concentration of DNA was 100.4~246.3 ng/μL with an average of 183.8 ng/μL.
OD
260
/
OD
280
was 1.40~1.97 and 1.68 in average, meanwhile, the output ranged from 20.02 to 49.26 μg/g and 36.54 μg/g in average.
DNA extracted using different preservation methODs except those dried by electric blast drying oven at high temperature could
prODuce as clear polymorphiepatterns amplified by PCR as DNA extracted from fresh samples. The PCR results showed that those
DNA were up to the standard of genetics research including nuclear genome, mitochondrion and chloroplast genome.
Keywords
Seaweed; Preservation methODs; DNA extraction; PCR
研究背景
高质量
DNA
的提取纯化是进行核酸分子生物
学研究的基础与前提。大型海藻中不仅含有丰富的
多糖、酚类、萜类等次生物质,而且这些物质在不
同藻类、不同组织部位以及不同生长发育阶段的含
量和比例不同,这些物质易导致
DNA
难以溶出或产
生不同程度的氧化,严重影响
DNA
的纯度和得率。
与陆生高等植物所含有的中性多糖相比,大型海藻