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分子植物育种
(
网络版
), 2013
,
11
,
1219
-
1226
Fenzi Zhiwu Yuzhong (Online), 2013, Vol.11, 1219
-
1226
http://mpb.5th.sophiapublisher.com
Copyright © 2013 5
th
Publisher 1219
研究论文
Research Article
植物脯氨酸测定方法优化及其应用
张瑛
,
罗志祥
,
周俊峰
,
施伏芝
,
阮新民
,
滕斌
,
吴敬德
安徽农科院水稻研究所
,
合肥
, 230031
通讯作者:
lzx6176@126.com
作者
分子植物育种
, 2013
,
11
,
30
doi: 10.5376/mpb.cn.2013.11.0030
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
)
张瑛等
, 2013,
植物脯氨酸测定方法优化及其应用
,
分子植物育种
(online), 11(30): 1219-1226 (doi: 10.5376/mpb.cn.2013.11.0030)
引用格式
(
英文
)
Zhang et al., 2013, The Optimization of Determination Method of Plant Proline and Its Application, Fenzi Zhiwu Yuzhong (online) (Molecular Plant
Breeding), 11(30): 1219-1226 (doi: 10.5376/mpb.cn.2013.11.0030)
脯氨酸
(Pro)
含量被认为是研究植物抗逆性的重要指标。然而,脯氨酸测定存在一些问题,主要表现:已有的标准
曲线范围较小,在
0
-
10
μ
g/mL
,而逆境胁迫处理脯氨酸浓度一般远高于该值,测定时则需要进行范围延展或多次稀释。另
外,叶片的一般取样量在
0.2
-
0.5 g
,不利于试验室小微量材料的重复取样测定。本文以水稻叶片为材料,对标准曲线和取样
量进行优化,最大标准脯氨酸浓度可达到
75
μ
g/mL
,取样量减少为
0.1 g
。并利用优化后的最适取样量和不同范围的标准曲
线研究干旱胁迫处理下含和不含
CBF3
的水稻材料脯氨酸含量的变化。研究结果表明:首先,干旱胁迫处理下,
CBF3
的存
在能显著促进脯氨酸含量的增加并能延缓水势下降,提高植物的耐旱性;其次,最适取样量和合适的标准曲线有利于提高脯
氨酸含量测定的准确性。研究为探明逆境条件下植物脯氨酸的调控机制提供较好的技术与方法。
关键词
植物
;
脯氨酸
;
方法优化
;
CBF3
The Optimization of Determination Method of Plant Proline and Its Application
Zhang Ying , Luo Zhixiang , Zhou Junfeng , Shi Fuzhi , Ruan Xinmin , Teng Bin , Wu Jingde
Rice Research Institute, Anhui Academy of Agricultural Sciences, Hefei, 230031, P.R. China
Corresponding author, lzx6176@126.com;
Authors
Abstract
The content of Proline (Pro) is often considered as an important index in plant stress resistance. But to
determination method of Pro, there are still some problems as follows : The standard curve varies in a narrow range, with
values between 0 and 10
μg/
mL, while subjected to stress treatment, the determination of the content of Pro should need linear
range extension or multitime-dilution.In addition, the sampling amount of leaves waswith values between 0.2 and 0.5 g, so did not
favor the repeated sampling of small trace materials in laboratory. In this paper, by using of rice leaves as experiment materials, the
standard curve and sampling amount had been optimized
the maximum standard of the concentration of Pro can reach 75
μg/m
L
the
optimal sampling amount was 0.1 g. Moreover, we use the optimized sampling amount and the different range for standard curve to
study the relationship between the concentration of Pro of rice and
CBF3
under the simulated drought stress. The results showed that:
Firstly, under drought stress, the existence of
CBF3
can promote the increase of the content of Pro significantly, and prolong the
decrease of the leaf water potentials, enhance plant drought tolerance; Secondly, the suitable sampling amount and the appropriate
range for standard curve are very important to the determination method of Pro. This study provides useful technology and method
for pathway of plant Proline under drought stress.
Keywords
Plant; Proline; Optimization;
CBF3
研究背景
脯氨酸
(Pro)
作为一种植物蛋白质组分主要以
游离状态广泛存在于植物体中
(
全先庆等
, 2007)
。在
干旱、高盐碱等逆境条件下,植物体内脯氨酸往往
大量积累。积累的脯氨酸除作为细胞质内渗透调节
物质外,还具有稳定生物大分子结构、降低细胞酸
收稿日期:
2013
10
17
接受日期:
2013
10
18
发表日期:
2013
12
24
基 金 项 目 : 本 研 究 由 科 技 部 国 际 合 作 项 目
(2010DFA31950)
、国家
863
项目
(2012AA101103)
973
计划前期研究专项
(2011CB111506)
和安徽省自然科学基
金项目
(11040606M97)
资助