中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 钾素对玉米茎腐病抗性反应中糖类物质代谢的影响 植物营养与肥料学报 2011,17 (1) 55-61
Position: Home > Articles > Effect of potassium on sugar metabolism in resistant response to corn stalk rot Journal of Plant Nutrition and Fertilizers 2011,17 (1) 55-61

钾素对玉米茎腐病抗性反应中糖类物质代谢的影响

作  者：
李文娟;何萍;金继运
单  位：
中国农业科学院农业环境与可持续发展研究所;中国农业科学院农业资源与农业区划研究所
关键词：
钾;玉米茎腐病;抗性;糖代谢;酶活性
摘  要：
通过砂培试验比较人工接种禾谷镰刀菌(Fusarium graminearum)后,不同钾处理对玉米幼根中糖含量及糖代谢关键酶活性和基因表达的影响。结果表明,不施钾处理中,接菌比未接菌处理玉米幼根中蔗糖和葡萄糖含量显著降低,且蔗糖的下降速率高于葡萄糖的下降速率。随着病原菌入侵时间的延长,不施钾处理葡萄糖与蔗糖比值显著升高,接菌8 d后,缺钾幼根葡萄糖与蔗糖的比值是充足供钾幼根的近10倍。此外,钾素有利于病原菌入侵,幼根中蔗糖合成酶(SS)和蔗糖磷酸合成酶(SPS)活性提高,ss和sps基因表达量增加;而缺钾处理中,ss基因的表达量几乎没有发生变化,sps基因的表达量在接菌后6d才有所增加。说明在病原菌入侵后,钾素可以通过调节受侵染组织糖代谢相关酶的活性,协调受侵染部位糖代谢过程,增强抗病能力。
译  名：
Effect of potassium on sugar metabolism in resistant response to corn stalk rot
作  者：
LI Wen-juan1,2,HE Ping2,JIN Ji-yun2(1 Institute of Environment and Sustainable Development in Agriculture,Chinese Academy of Agricultural Sciences,Beijing 100081,China;2 Institute of Agricultural Resources and Regional Planning,Chinese Academy of Agricultural Sciences/Ministry of Agriculture Key Laboratory of Crop Nutrition and Fertilization,Beijing 100081,China)
关键词：
potassium;corn stalk rot;resistance;sugar metabolism;enzyme activity
摘  要：
The effects of potassium on sucrose and glucose content,sugar metabolism related enzyme activity and the expression of related genes in maize root infected with Fusarium graminearum were studied under sand-culture experiment.The results showed that under K stress,pathogen infection led to significant decrease of sucrose and glucose contents.The sucrose content declined more quickly than that of glucose.With the process of infection,the ratio of glucose to sucrose increased in no potassium applied treatment;8 days after infection,the ratio was 10 times higher in K deficient roots than in K adequate roots.Besides,after inoculation,the activity of sucrose phosphate synthase(SPS) and sucrose synthase(SS) were increased as well as the gene expression of sps and ss in potassium treated maize root.In K-treatment,sps gene expression increased in 6 days after inoculation,and no change of ss expression was observed in K-stressed root.This study demonstrated that K could enhance maize resistance to stalk rot by regulating sugar metabolism related enzyme,consequently,maintain the optimal sugar metabolism in infected position,and enhance the resistance to stalk rot.

相似文章

导出引用
计量
文章访问数: 8
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46