首页> 美国卫生研究院文献>other >Effects of arbuscular mycorrhizal fungi and soil nutrient addition on the growth of Phragmites australis under different drying-rewetting cycles
【2h】

Effects of arbuscular mycorrhizal fungi and soil nutrient addition on the growth of Phragmites australis under different drying-rewetting cycles

机译:干旱-再湿循环下丛枝菌根真菌和土壤养分添加对南方芦苇生长的影响

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

The frequency of soil drying–rewetting cycles is predicted to increase under future global climate change, and arbuscular mycorrhizal fungi (AMF) are symbiotic with most plants. However, it remains unknown how AMF affect plant growth under different frequencies of soil drying–rewetting cycles. We subjected a clonal wetland plant Phragmites australis to three frequencies of drying-rewetting cycles (1, 2, or 4 cycles), two nutrient treatments (with or without), and two AMF treatments (with or without) for 64 days. AMF promoted the growth of P. australis, especially in the 2 cycles of the drying-rewetting treatment. AMF had a significant positive effect on leaf mass and number of ramets in the 2 cycles of the drying-rewetting treatment with nutrient addition. In the 2 cycles of drying-rewetting treatment without nutrient addition, AMF increased leaf area and decreased belowground to aboveground biomass ratio. These results indicate that AMF may assist P. australis in coping with medium frequency of drying-rewetting cycles, and provide theoretical guidance for predicting how wetland plants respond to future global climate change.
机译:预计在未来的全球气候变化下,土壤干湿循环的频率会增加,而丛枝菌根真菌(AMF)与大多数植物共生。但是,仍然不清楚AMF在不同频率的土壤干湿循环下如何影响植物生长。我们对克隆湿地植物芦苇进行了三个频率的干湿循环(1、2或4个循环),两次营养处理(有或没有)和两次AMF处理(有或没有),持续64天。 AMF促进了澳大利亚假单胞菌的生长,特别是在干燥回湿处理的两个周期中。在添加养分的干湿复湿处理的两个循环中,AMF对叶片质量和分株数具有明显的积极影响。在不添加营养物的干燥-再湿处理的两个循环中,AMF增加了叶面积,并降低了地下生物量对地上生物量的比率。这些结果表明,AMF可能有助于澳大利亚假单胞菌应对中等频率的干湿再循环,并为预测湿地植物如何应对未来的全球气候变化提供理论指导。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号