干旱区生态环境知识资源中心(Arid): 比拉底白刺苗期抗旱性分析

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	比拉底白刺苗期抗旱性分析
其他题名	Drought resistance analysis of Nitraria billardieri seedlings
	鲁路 1; 张景波 2; 陈金慧 1; 周艳威 1; 成铁龙 1
来源期刊	南京林业大学学报. 自然科学版
ISSN	1000-2006
出版年	2015
卷号	39 期号:6 页码:51-55
中文摘要	为研究澳大利亚荒漠植物比拉底白刺的抗旱性,以比拉底白刺幼苗作为研究材料,在100 mmol/ L甘露醇溶液模拟干旱的环境下,观察了植物形态变化,测定了植物的相对含水量(relative water content,RWC)、过氧化物酶活性(peroxidase,POD)、丙二醛(malondiadehyde,MDA)以及游离脯氨酸(proline,Pro)含量的动态变化。结果表明,干旱处理过程中,比拉底白刺叶片从基部往上逐渐萎蔫变黄,推测其通过保护顶芽的生命力以适应干旱环境;相对含水量前期相对稳定,后逐渐下降;POD活性先缓慢升高,后快速上升;游离Pro浓度总体呈上升趋势; MDA含量先升后降。差异显著性分析表明,与对照相比,POD和游离Pro的变化趋势与对照组相比差异显著,说明二者与比拉底白刺的抗旱性具有相关性,通过减少质膜过氧化保护细胞完整性;MDA含量变化不明显,可能由于POD和游离脯氨酸的作用使得白刺细胞的膜脂系统未遭受活性氧自由基的强烈攻击。
英文摘要	The drought resistance research of Australia desert plants Nitraria billardieri was focused by observing morphological changes and analyzing variation trends of relative water content(RWC), enzymatic activity of peroxidase (POD), malondiadehyde (MDA), and proline(Pro) under drought stress simulated by 100 mmol/ L mannitol solution. The results showed that the leaves turned yellow under drought stress and withered gradually from base to top, presumably by protecting the vitality of buds to adapt the arid environments. The relative water content kept relatively stable at early stage and then decreased gradually. The POD activity increased slowly at first and then increased rapidly. Free Pro concentration had been rising during the treatment. MDA content increased at first and then decreased. According to the statistical analysis, both POD and free Pro increased obviously compared with control group. They reduced plasma membrane peroxidation and kept the cell integrity which showed drought resistance of Nitraria billardieri. MDA concentration did not change significantly, this indicated that cytoplasmic membrane system was protected and did not seriously suffer from reactive oxygen free radical attacking under drought stress probably caused by increased concentration of POD and free Pro.
中文关键词	比拉底白刺苗 ; 生理指标测定 ; 抗旱性分析
英文关键词	Nitraria billardieri seedling physiological indexes determination drought resistance analysis
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:5572292
来源机构	中国林业科学研究院沙漠林业实验中心
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233007
作者单位	1.南京林业大学林学院, 林木遗传与生物技术江苏省部共建教育部重点实验室, 南京, 江苏 210037, 中国; 2.中国林业科学研究院沙漠林业实验中心, 磴口, 内蒙古 015200, 中国
推荐引用方式 GB/T 7714	鲁路,张景波,陈金慧,等. 比拉底白刺苗期抗旱性分析[J]. 中国林业科学研究院沙漠林业实验中心,2015,39(6):51-55.
APA	鲁路,张景波,陈金慧,周艳威,&成铁龙.(2015).比拉底白刺苗期抗旱性分析.南京林业大学学报. 自然科学版,39(6),51-55.
MLA	鲁路,et al."比拉底白刺苗期抗旱性分析".南京林业大学学报. 自然科学版 39.6(2015):51-55.