Effect of larch (Larix gmelini Rupr.) root exudates on Manchurian walnut (Juglans mandshurica Maxim.) growth and soil juglone in a mixed-species plantation
文献类型：期刊论文
| 作者 | Yang, Lixue1,2; Wang, Peng2; Kong, Chuihua2 |
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2010-04-01 |
| 卷号 | 329期号:1-2页码:249-258 |
| 关键词 | Juglans Mandshurica Maxim. Juglone Larix Gmelini Rupr. Mixed-species Plantation Root Exudates Autotoxicity |
| ISSN号 | 0032-079X |
| DOI | 10.1007/s11104-009-0149-0 |
| 英文摘要 | The establishment and productivity of a Manchurian walnut (Juglans mandshurica Maxim.) plantation can be improved by inter-planting with larch (Larix gmelini Rupr.) in Northeast China, but the potential mechanism remains obscure. We carried out a series of experiments in a 20-year-old mixed-species plantation, as well as in Manchurian walnut and larch plantations. Manchurian walnut seedlings had difficulty surviving in the Manchurian walnut plantation because their growth was inhibited by their own soil and root exudates. In sharp contrast, Manchurian walnut seedlings grew well in larch and mixed-species plantations. Larch soil and root exudates greatly stimulated the growth of Manchurian walnut seedlings in controlled conditions. In particular, larch root exudates can increase the soil microbial populations, including bacteria, actinomycetes, azotobacter and cellulose-decomposing microorganisms; larch root exudates can also increase the enzyme activities of saccharase, urease, proteinase and polyphenol oxidase. Significant results led to a rapid degradation of the root-exuded phytotoxic juglone from Manchurian walnut. Manchurian walnut root exudates contained juglone at a high concentration of 121.3 +/- 6.6 mg g(-1), while juglone concentrations in the soil beneath Manchurian walnut trees ranged from 2.9-6.2 A mu g g(-1) soil. It appears from the results that juglone may be released from Manchurian walnut roots into the soil in a sufficient quantity but rapidly degrades due to interactions with soil factors. Furthermore, juglone was more resistant toward degradation in the Manchurian walnut soil (t (1/2) = 7.36 A +/- 0.63 h) when compared to the larch soil (t (1/2) = 4.66 A +/- 0.82 h). The results suggest that larch may improve the establishment and productivity of Manchurian walnut in a mixed-species plantation through the release of root exudates. |
| WOS研究方向 | Agriculture ; Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000275543300019 |
| 出版者 | SPRINGER |
| 源URL | [http://210.72.129.5/handle/321005/121419]  |
| 专题 | 中国科学院沈阳应用生态研究所 |
| 通讯作者 | Kong, Chuihua |
| 作者单位 | 1.NE Forestry Univ, Coll Forestry, Harbin 150040, Peoples R China 2.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Lixue,Wang, Peng,Kong, Chuihua. Effect of larch (Larix gmelini Rupr.) root exudates on Manchurian walnut (Juglans mandshurica Maxim.) growth and soil juglone in a mixed-species plantation[J]. PLANT AND SOIL,2010,329(1-2):249-258. |
| APA | Yang, Lixue,Wang, Peng,&Kong, Chuihua.(2010).Effect of larch (Larix gmelini Rupr.) root exudates on Manchurian walnut (Juglans mandshurica Maxim.) growth and soil juglone in a mixed-species plantation.PLANT AND SOIL,329(1-2),249-258. |
| MLA | Yang, Lixue,et al."Effect of larch (Larix gmelini Rupr.) root exudates on Manchurian walnut (Juglans mandshurica Maxim.) growth and soil juglone in a mixed-species plantation".PLANT AND SOIL 329.1-2(2010):249-258. |
入库方式： OAI收割
来源：沈阳应用生态研究所
浏览0
下载0
收藏0
其他版本
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。