Carbon and nitrogen metabolism in arbuscular mycorrhizal maize plants under low-temperature stress
文献类型：期刊论文
| ; | |
| 作者 | X. C. Zhu; F. B. Song; F. L. Liu; S. Q. Liu; C. J. Tian |
| 刊名 | Crop & Pasture Science
 ; Crop & Pasture Science
|
| 出版日期 | 2015 ; 2015 |
| 卷号 | 66期号:1页码:62-70 |
| 通讯作者 | 朱先灿 ; 朱先灿 |
| 中文摘要 | Effects of the arbuscular mycorrhizal (AM) fungus Glomus tortuosum on carbon (C) and nitrogen (N) metabolism of Zea mays L. grown under low-temperature stress was investigated. Maize plants inoculated or not inoculated with AM fungus were grown in a growth chamber at 25 degrees C for 4 weeks and subsequently subjected to two temperature treatments (15 degrees C, low temperature; 25 degrees C, ambient control) for 2 weeks. Low-temperature stress significantly decreased AM colonisation, plant height and biomass. Total N content and activities of glutamate oxaloacetate transaminase and glutamate pyruvate transaminase of AM plants were higher than those of non-AM plants. AM plants had a higher net photosynthetic rate (Pn) than non-AM plants, although low temperature inhibited the Pn. Compared with non-AM plants, AM plants exhibited higher leaf soluble sugars, reducing sugars, root sucrose and fructose contents, and sucrose phosphate synthase and amylase activities at low temperature. Moreover, low-temperature stress increased the C : Nratio in the leaves of maize plants, and AM colonisation decreased the root C : N ratio. These results suggested a difference in the C and N metabolism of maize plants at ambient and low temperature regimes. AM symbiosis modulated C metabolic enzymes, thereby inducing an accumulation of soluble sugars, which may have contributed to an increased tolerance to low temperature, and therefore higher Pn in maize plants.; Effects of the arbuscular mycorrhizal (AM) fungus Glomus tortuosum on carbon (C) and nitrogen (N) metabolism of Zea mays L. grown under low-temperature stress was investigated. Maize plants inoculated or not inoculated with AM fungus were grown in a growth chamber at 25 degrees C for 4 weeks and subsequently subjected to two temperature treatments (15 degrees C, low temperature; 25 degrees C, ambient control) for 2 weeks. Low-temperature stress significantly decreased AM colonisation, plant height and biomass. Total N content and activities of glutamate oxaloacetate transaminase and glutamate pyruvate transaminase of AM plants were higher than those of non-AM plants. AM plants had a higher net photosynthetic rate (Pn) than non-AM plants, although low temperature inhibited the Pn. Compared with non-AM plants, AM plants exhibited higher leaf soluble sugars, reducing sugars, root sucrose and fructose contents, and sucrose phosphate synthase and amylase activities at low temperature. Moreover, low-temperature stress increased the C : Nratio in the leaves of maize plants, and AM colonisation decreased the root C : N ratio. These results suggested a difference in the C and N metabolism of maize plants at ambient and low temperature regimes. AM symbiosis modulated C metabolic enzymes, thereby inducing an accumulation of soluble sugars, which may have contributed to an increased tolerance to low temperature, and therefore higher Pn in maize plants. |
| WOS记录号 | WOS:000349077100006 |
| 源URL | [http://159.226.123.10/handle/131322/6421]  |
| 专题 | 东北地理与农业生态研究所_作物生理与栽培学科组 |
| 推荐引用方式 GB/T 7714 | X. C. Zhu,F. B. Song,F. L. Liu,et al. Carbon and nitrogen metabolism in arbuscular mycorrhizal maize plants under low-temperature stress, Carbon and nitrogen metabolism in arbuscular mycorrhizal maize plants under low-temperature stress[J]. Crop & Pasture Science, Crop & Pasture Science,2015, 2015,66, 66(1):62-70, 62-70. |
| APA | X. C. Zhu,F. B. Song,F. L. Liu,S. Q. Liu,&C. J. Tian.(2015).Carbon and nitrogen metabolism in arbuscular mycorrhizal maize plants under low-temperature stress.Crop & Pasture Science,66(1),62-70. |
| MLA | X. C. Zhu,et al."Carbon and nitrogen metabolism in arbuscular mycorrhizal maize plants under low-temperature stress".Crop & Pasture Science 66.1(2015):62-70. |
入库方式： OAI收割
来源：东北地理与农业生态研究所
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