黄河三角洲河滩与潮滩芦苇对盐胁迫的生理生态响应

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室

	黄河三角洲河滩与潮滩芦苇对盐胁迫的生理生态响应
	陈琳 1,2; 张俪文 1; 刘子亭 2; 路峰 3; 冯光海 3; 颜坤 1; 韩广轩 1
刊名	生态学报
	2020
卷号	40 期号:6 页码:2090-2098
关键词	盐胁迫 Na~+流速光合作用抗氧化酶脯氨酸芦苇
ISSN号	1000-0933
其他题名	Physiological and ecological responses of hetan and chaotan Phragmites australis to salt stress
文献子类	Article
英文摘要	Characterizing the different physiological and ecological responses of Phragmites australis from two habitats in the Yellow River delta to salt stress can provide important theoretical support for the selection of P. australis types for the ecological restoration of degraded coastal wetlands. The Na~+ content,photosynthetic parameters,H_2O_2 content,antioxidant enzyme activity,malondialdehyde content,and proline content of leaves from hetan (low-salt habitat,riverside) and chaotan (high-salt habitat,high marsh) P. australis grown under salt stress conditions (300 mmol/L NaCl) were compared,along with the Na~+ flux of the root growth area. Salt stress significantly increased the Na~+ content in the hetan leaves but had no significant effect on that of the chaotan leaves. Furthermore,non-invasive micro-test technology(NMT) revealed greater Na~+ efflux in the chaotan plants((1982.05122.74) pmol cm~(-2) s~(-1) vs. (87.9312.94) pmol cm~(-2) s~(-1),P< 0.01) than in the hetan plants((1574.16458.90) pmol cm~(-2) s~(-1) vs. (-126.8823.01) pmol cm~(-2) s~(-1),P<0.01), which could be attributed to the need for chaotan P. australis to effectively regulate intracellular ion balance. In addition,the photosynthetic rate of the chaotan plants((16.361.09) mumol m~(-2) s~(-1) vs. (22.79 0.67) mumol m~(-2) s~(-1),P< 0.01) was significantly greater than that of the hetan plants((12.710.97) mumol m~(-2) s~(-1) vs. (23.810.55) mumol m~(-2) s~(-1),P<0.01) after 7 d of salt treatment. Salt stress induced significant increases in the H_2O_2,malondialdehyde,and proline contents of leaves from both P. australis types,as well as in the activity of antioxidant enzymes. Moreover,the activity of glutathione reductase (GR) in chaotan P. australis was increased significantly ((6.901.73) U/mgprot vs. (3.540.54) U/mgprot, P<0.05). These results indicate that chaotan P. australis is more adaptable to salt stress than hetan P. australis,as indicated by the greater Na~+ efflux of its roots,greater proline content,and greater antioxidant enzyme activity,which promote salt-stress tolerance. Therefore,in the ecological restoration of degraded coastal wetlands in the Yellow River delta, P. australis from the high marsh should be selected as the material for vegetation restoration.
语种	中文
CSCD记录号	CSCD:6705749
资助机构	国家自然科学基金面上项目 ; 中国科学院青年创新促进会 ; 山东省林业科技创新项目
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/30364]
专题	烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
作者单位	1.中国科学院烟台海岸带研究所,中国科学院海岸带环境过程与生态修复重点实验室,烟台264003; 2.聊城大学,环境与规划学院,聊城252000; 3.山东省黄河三角洲国家级自然保护区管理局,东营257091
推荐引用方式 GB/T 7714	陈琳,张俪文,刘子亭,等. 黄河三角洲河滩与潮滩芦苇对盐胁迫的生理生态响应[J]. 生态学报,2020,40(6):2090-2098.
APA	陈琳.,张俪文.,刘子亭.,路峰.,冯光海.,...&韩广轩.(2020).黄河三角洲河滩与潮滩芦苇对盐胁迫的生理生态响应.生态学报,40(6),2090-2098.
MLA	陈琳,et al."黄河三角洲河滩与潮滩芦苇对盐胁迫的生理生态响应".生态学报 40.6(2020):2090-2098.