NEIGAE OpenIR
Silicon Priming Created an Enhanced Tolerance in Alfalfa (Medicago sativa L.) Seedlings in Response to High Alkaline Stress
D. Liu, M. Liu, X. L. Liu, X. G. Cheng and Z. W. Liang
2018
发表期刊Frontiers in Plant Science
卷号9
摘要Alkaline stress as a result of higher pH usually triggers more severe physiological damage to plants than that of saline stress with a neutral pH. In the present study, we demonstrated that silicon (Si) priming of alfalfa (Medicago sativa L.) seedlings increased their tolerance to high alkaline stress situations. Gongnong No. 1 seedlings were subjected to alkaline stress simulated by 25 mM Na2CO3 (pH 11.2). Alkaline stress greatly decreased the biomass and caused severe lodging or wilting of alfalfa seedlings. In contrast, the application of Si to alfalfa seedlings 36 h prior to the alkaline treatment significantly alleviated the damage symptoms and greatly increased the biomass and chlorophyll content. Because of being concomitant with increasing photosynthesis and water use efficiency, decreasing membrane injury and malondialdehyde content, and increasing peroxidase and catalase ascorbate activities in alfalfa leaves, thereby alleviating the triggered oxidative damage by alkaline stress to the plant. Furthermore, Si priming significantly decreased the accumulation of protein and proline content in alfalfa, thus reducing photosynthetic feedback repression. Si priming significantly accumulated more Na in the roots, but led to a decrease of Na accumulation and an increase of K accumulation in the leaves under alkaline stress. Meanwhile, Si priming decreased the accumulation of metal ions such as Mg, Fe, Mn, and Zn in the roots of alfalfa seedlings under alkaline stress. Collectively, these results suggested that Si is involved in the metabolic or physiological changes and has a potent priming effect on the alkaline tolerance of alfalfa seedlings. The present study indicated that Si priming is a new approach to improve the alkaline tolerance in alfalfa and provides increasing information for further exploration of the alkaline stress response at the molecular level in alfalfa.
文献类型期刊论文
条目标识符http://ir.iga.ac.cn/handle/131322/9254
专题中国科学院东北地理与农业生态研究所
作者单位中国科学院东北地理与农业生态研究所
推荐引用方式
GB/T 7714
D. Liu, M. Liu, X. L. Liu, X. G. Cheng and Z. W. Liang. Silicon Priming Created an Enhanced Tolerance in Alfalfa (Medicago sativa L.) Seedlings in Response to High Alkaline Stress[J]. Frontiers in Plant Science,2018,9.
APA D. Liu, M. Liu, X. L. Liu, X. G. Cheng and Z. W. Liang.(2018).Silicon Priming Created an Enhanced Tolerance in Alfalfa (Medicago sativa L.) Seedlings in Response to High Alkaline Stress.Frontiers in Plant Science,9.
MLA D. Liu, M. Liu, X. L. Liu, X. G. Cheng and Z. W. Liang."Silicon Priming Created an Enhanced Tolerance in Alfalfa (Medicago sativa L.) Seedlings in Response to High Alkaline Stress".Frontiers in Plant Science 9(2018).
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[D. Liu, M. Liu, X. L. Liu, X. G. Cheng and Z. W. Liang]的文章
百度学术
百度学术中相似的文章
[D. Liu, M. Liu, X. L. Liu, X. G. Cheng and Z. W. Liang]的文章
必应学术
必应学术中相似的文章
[D. Liu, M. Liu, X. L. Liu, X. G. Cheng and Z. W. Liang]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。