干旱区生态环境知识资源中心(Arid): 风和风沙流对玉米幼苗叶片膜透性和膜保护系统的影响

Arid

	风和风沙流对玉米幼苗叶片膜透性和膜保护系统的影响
其他题名	Effects of wind and wind-sand flow on membrane permeability and membrane protection system of corn seedling leaf
	赵哈林1 ; 李瑾 1; 周瑞莲 2; 云建英 1; 曲浩 1; 潘成臣 1
来源期刊	中国生态农业学报
ISSN	1671-3990
出版年	2014
卷号	22 期号:12 页码:1440-1445
中文摘要	为了解玉米幼苗对风和风沙流危害的生理响应机制, 2013年春季在内蒙古自治区东部科尔沁沙地研究了0 m·s~(-1) (CK)、6 m·s~(-1)、9 m·s~(-1)、12 m·s~(-1)、15 m·s~(-1)和18 m·s~(-1)等6个风速下净风和风沙流(风沙流强度相应为0 g·cm~(-1)·min~(-1)、1.00 g·cm~(-1)·min~(-1)、28.30 g·cm~(-1)·min~(-1)、63.28 g·cm~(-1)·min~(-1)、111.82 g·cm~(-1)·min~(-1)和172.93 g·cm~(-1)·min~(-1)) 10 min吹袭对玉米幼苗叶片膜透性影响及其膜保护系统响应。结果表明, 净风吹袭下, 随风速增强, 玉米幼苗丙二醛(MDA)含量和过氧化物酶(POD)活性趋于增加, 膜透性和过氧化物歧化酶(SOD)、过氧化氢酶(CAT)活性及可溶性糖、脯氨酸含量呈波动式变化; 其中12~18 m·s~(-1)处理的SOD活性, 6 m·s~(-1)和12~18 m·s~(-1)处理的POD活性, 6 m·s~(-1)和12 m·s~(-1)处理的CAT活性, 以及6 m·s~(-1)处理的可溶性糖含量和18 m·s~(-1)处理的脯氨酸含量显著高于CK。风沙流吹袭下, 随着风沙流强度增大, 玉米幼苗MDA含量、SOD活性和可溶性糖含量趋于下降, 但膜透性和POD活性显著增强, 除18 m·s~(-1)处理的脯氨酸外, 其他处理的CAT活性和脯氨酸含量变化不显著。结果说明, 短暂的净风吹袭对于玉米幼苗叶片的细胞膜危害不明显, 而风沙流胁迫致其细胞膜结构受损严重; 风和风沙流胁迫下对细胞膜起到保护作用的主要是POD, 在18 m·s~(-1)大风和风沙流胁迫下脯氨酸起到了渗透调节作用。
英文摘要	Corn seedlings are often harmed by wind and wind-blown sand flowing in semi-arid, wind-sand areas of west of Northeast China in spring. In order to understand the physiological response mechanism of corn seedlings to wind and wind-blown sand damages, net-wind and wind-blown sand experiments were conducted in the spring of 2013 in Horqin Sand Land of eastern Inner Mongolia. The experiments included six wind speed treatments [0 m·s~(-1) (CK), 6 m·s~(-1), 9 m·s~(-1), 12 m·s~(-1), 15 m·s~(-1) and 18 m·s~(-1)] and six wind-sand flow strengths [0 g·cm~(-1)·min~(-1) (CK), 1.00 g·cm~(-1)·min~(-1), 28.30 g·cm~(-1)·min~(-1), 63.28 g·cm~(-1)·min~(-1), 111.82 g·cm~(-1)·min~(-1) and 172.93 g·cm~(-1)·min~(-1), which were corresponding to the above wind speeds]. The results showed that with increasing wind speed in the net-wind experiment, MDA content and POD activity apparently increased. Also membrane permeability, SOD and CAT activities, and soluble sugar and proline contents fluctuated with changing wind speed. Compared with CK, SOD activities in 12-18 m·s~(-1) treatments and POD activities in 6 m·s~(-1) and 12-18 m·s~(-1) treatments, CAT activities in 6 m·s~(-1) and 12 m·s~(-1) treatments, soluble sugar content in 6 m·s~(-1) treatment and prolin content in 18 m·s~(-1) treatment increased significantly. With increasing wind speed under the wind-sand flow experiment, MDA content, SOD activity and soluble sugar content apparently decreased, membrane permeability and POD activity increased significantly, CAT activity and proline content did not significantly change. The only exception was for proline content in 18 m·s~(-1) treatment where wind-blown sand strength reached 172.93 g·cm~(-1)·min~(-1). The results suggested that while the 10 min net-wind blow had no significant effect on cell membranes of corn seedlings, wind-blown sand stress caused significant damage to seedling membrane structure. POD played an important role in protecting seedling cell membranes against damage of wind and wind-blown sand stress. Also proline played an osmotic adjustment role under 18 m·s~(-1) net-wind and wind-blown sand stress.
中文关键词	玉米幼苗 ; 风 ; 风沙流 ; 膜透性 ; 保护酶 ; 渗透调节
英文关键词	Corn seedling Net-wind Wind-sand flow Membrane permeability Protective enzyme Osmotic regulation
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:5302601
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232251
作者单位	1.中国科学院寒区旱区环境与工程研究所, 兰州, 甘肃 730000, 中国; 2.鲁东大学生命学院, 烟台, 山东 264025, 中国
推荐引用方式 GB/T 7714	赵哈林,李瑾,周瑞莲,等. 风和风沙流对玉米幼苗叶片膜透性和膜保护系统的影响[J]. 中国科学院西北生态环境资源研究院,2014,22(12):1440-1445.
APA	赵哈林,李瑾,周瑞莲,云建英,曲浩,&潘成臣.(2014).风和风沙流对玉米幼苗叶片膜透性和膜保护系统的影响.中国生态农业学报,22(12),1440-1445.
MLA	赵哈林,et al."风和风沙流对玉米幼苗叶片膜透性和膜保护系统的影响".中国生态农业学报 22.12(2014):1440-1445.