Arbuscular mycorrhiza induced putrescine degradation into gamma-aminobutyric acid, malic acid accumulation, and improvement of nitrogen assimilation in roots of water-stressed maize plants
文献类型：期刊论文
| 作者 | Hu, Yanbo; Chen, Baodong
|
| 刊名 | MYCORRHIZA
 |
| 出版日期 | 2020-05 |
| 卷号 | 30期号:2-3页码:329-339 |
| 关键词 | gamma-Aminobutyric acid Arbuscular mycorrhizal symbiosis Drought Nitrogen assimilation Polyamine Zea mays |
| ISSN号 | 0940-6360 |
| 英文摘要 | Water shortage limits plant growth and development by inducing physiological and metabolic disorders, while arbuscular mycorrhizal (AM) symbiosis can improve plant adaptation to drought stress by altering some metabolic and signaling pathways. In this study, root growth and levels of some metabolites (polyamines, amino acids, and malic acid [MA]) and key enzymes were examined in AM-inoculated and non-inoculated (NM) maize seedlings under different water conditions. The results showed that AM symbiosis stimulated root growth and the accumulation of putrescine (Put) during initial plant growth. Root Put concentration significantly decreased in AM compared with NM plants under water stress; correspondingly, Put degradation via diamine oxidase into gamma-aminobutyric acid (GABA) occurred. Moreover, glutamine concentration and the activity of N assimilation enzymes (nitrate reductase and glutamine synthetase) were higher in roots of AM than NM plants under moderate water stress. The activity of GABA transaminase and malic enzyme, and MA concentration were also higher in roots of AM than NM plants under moderate water stress. Our results indicated that Put catabolism along with improved N assimilation and the accumulation of GABA and MA were the key metabolic processes in roots of AM maize plants in response to water stress. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/44217]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Hu, Yanbo,Chen, Baodong. Arbuscular mycorrhiza induced putrescine degradation into gamma-aminobutyric acid, malic acid accumulation, and improvement of nitrogen assimilation in roots of water-stressed maize plants[J]. MYCORRHIZA,2020,30(2-3):329-339. |
| APA | Hu, Yanbo,&Chen, Baodong.(2020).Arbuscular mycorrhiza induced putrescine degradation into gamma-aminobutyric acid, malic acid accumulation, and improvement of nitrogen assimilation in roots of water-stressed maize plants.MYCORRHIZA,30(2-3),329-339. |
| MLA | Hu, Yanbo,et al."Arbuscular mycorrhiza induced putrescine degradation into gamma-aminobutyric acid, malic acid accumulation, and improvement of nitrogen assimilation in roots of water-stressed maize plants".MYCORRHIZA 30.2-3(2020):329-339. |
入库方式： OAI收割
来源：生态环境研究中心
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