Picea asperata pioneer and fibrous roots have different physiological mechanisms in response to soil freeze-thaw in spring
文献类型：期刊论文
| 作者 | Yin, C.1; Xiao, Q.1,2; Sun, Y.1,2; Liu, Q.1; Pang, X.1 |
| 刊名 | BIOLOGIA PLANTARUM
 |
| 出版日期 | 2017-12 |
| 卷号 | 61期号:4页码:709-716 |
| 关键词 | antioxidants nitrogen osmotic adjustment peroxidase proline root vitality saccharides |
| ISSN号 | 0006-3134 |
| DOI | 10.1007/s10535-017-0728-5 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | About 70 % of the total land area in the world are affected by soil freeze and thaw (FT) cycles. Root is the first organ of plant to sense soil environment and it is unclear how it copes with the soil FT. Based on the different functions of firstorder pioneer and fibrous roots in woody plants, we hypothesize that pioneer and fibrous roots respond differently. The experiment was conducted in a growth chamber using Picea asperata seedlings. We designed the FT based on field observation data. The physiological responses in fibrous and pioneer roots were examined. Fibrous roots had higher root vitality and N content, whereas pioneer roots exhibited higher total nonstructural saccharide content. The accumulation of O-2(-) under FT treatment was similar in the two types of roots. Pioneer roots showed higher osmolyte (especially proline) content, whereas fibrous roots had higher peroxidase activity. The present study confirmed that fibrous roots have stronger metabolism ability, whereas pioneer roots are the key storage organs. FT in the temperature range from -5 to 5 degrees C are mild and do not cause serious injury to roots. Pioneer roots have higher tolerance to soil FT in spring than fibrous roots. The roots have different strategies to FT: fibrous roots increase the antioxidant system, whereas pioneer roots accumulate more osmolytes. Such knowledge can help us to understand how roots of woody plants cope with soil FT. |
| 学科主题 | Plant Sciences |
| URL标识 | 查看原文 |
| WOS关键词 | ANTIOXIDANT ENZYME-ACTIVITY ; CLIMATE-CHANGE ; FINE ROOTS ; LIPID-PEROXIDATION ; OSMOTIC ADJUSTMENT ; OXIDATIVE STRESS ; TOLERANCE ; CYCLES ; FROST ; TEMPERATURE |
| WOS研究方向 | Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000413748300013 |
| 出版者 | ACAD SCIENCES CZECH REPUBLIC, INST EXPERIMENTAL BOTANY |
| 源URL | [http://210.75.237.14/handle/351003/29892]  |
| 专题 | 生物多样性与生态系统服务领域_生态系统恢复与生物多样性保育四川省重点实验室 生物多样性与生态系统服务领域_中国科学院山地生态恢复与生物资源利用重点实验室 生物多样性与生态系统服务领域_生态研究 |
| 作者单位 | 1.CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology,Chinese Academy of Sciences, Chengdu 610041, P.R. China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yin, C.,Xiao, Q.,Sun, Y.,et al. Picea asperata pioneer and fibrous roots have different physiological mechanisms in response to soil freeze-thaw in spring[J]. BIOLOGIA PLANTARUM,2017,61(4):709-716. |
| APA | Yin, C.,Xiao, Q.,Sun, Y.,Liu, Q.,&Pang, X..(2017).Picea asperata pioneer and fibrous roots have different physiological mechanisms in response to soil freeze-thaw in spring.BIOLOGIA PLANTARUM,61(4),709-716. |
| MLA | Yin, C.,et al."Picea asperata pioneer and fibrous roots have different physiological mechanisms in response to soil freeze-thaw in spring".BIOLOGIA PLANTARUM 61.4(2017):709-716. |
入库方式： OAI收割
来源：成都生物研究所
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