...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Plant and Soil >Nitrogen availability and susceptibility of tomato leaves to Botrytis cinerea
【24h】

Nitrogen availability and susceptibility of tomato leaves to Botrytis cinerea

机译：番茄叶片对灰葡萄孢的氮素有效性和敏感性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Tomato plants with varying N availability were grown by adding N daily in exponentially increasing amounts to a nutrient solution at different rates. Leaves of plants grown at low N availability had a high leaf C:N ratio (21 g/g) and were about 2.5times more susceptible to primary lesion formation by B. cinerea compared to plants grown at high N availability, which had a low leaf C:N ratio (11 g/g). Leaf C:N ratio accounted for 95% of variation in susceptibility. This relationship between C:N ratio and susceptibility persisted when plants were grown with exponential P addition and optimal N supply, and was thus independent of plant growth rate or related factors. The effect of N availability could not be explained by variation in the most obviousN-based resistance compound alpha-tomatine because more susceptible leaves with a high C:N ratio contained more alpha-tomatine. These leaves also contained more soluble carbohydrates. The level of soluble carbohydrates correlated positively with susceptibility, independent of the growth method. It is therefore suggested that the effect of N availability on susceptibility can be explained by variation in levels of soluble carbohydrates which hence may play a role in the infection process.
机译：通过向营养液中以不同的速率每天以成倍增加的量添加N，来种植具有不同N利用率的番茄植株。在低氮利用率下生长的植物叶片具有较高的叶片C：N比（21 g / g），与高氮利用率下生长的植物相比，灰黄芽孢杆菌对初生病害的敏感性高约2.5倍叶片C：N比（11 g / g）。叶片C：N比值​​占敏感性变化的95％。 C：N比与药敏性之间的这种关系在以指数P添加量和最佳N供应量生长的植物中持续存在，因此与植物生长速率或相关因素无关。氮的有效性无法用最明显的基于N的抗性化合物α-番茄碱的变化来解释，因为C：N比高的易感叶片含有更多的α-番茄碱。这些叶子还含有更多的可溶性碳水化合物。可溶性碳水化合物的水平与药敏性呈正相关，与生长方法无关。因此建议，氮的有效性对药敏性的影响可以通过可溶性碳水化合物水平的变化来解释，从而可能在感染过程中起作用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

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