Effects of elevated atmospheric CO 2 concentrations on phloem sap composition of spring crops and aphid performance

Journal of plant interactions

article

Viktoriya Oehme¹  Petra Högy¹  Claus P.W. Zebitz²  Andreas Fangmeier¹ 

[1]Institute for Landscape and Plant Ecology (320), Universität Hohenheim

[2]Institute of Phytomedicine (360), Universität Hohenheim

关键词: CO 2 enrichment;    aphid;    spring crops;    amino acid;    sugar;   

DOI  :  10.1080/17429145.2012.736200

学科分类：纳米科学和纳米技术

来源: Taylor & Francis

【 摘 要 】

The concentration and composition of free amino acids and carbohydrates in the phloem sap of wheat and oilseed rape (OSR) and the effects on the performance of aphids ( Rhopalosiphum padi and Myzus persicae ) were determined under atmospheric carbon dioxide (CO 2 ) enrichment. The analysis of phloem sap showed that carbohydrates and amino acid levels of the host plants were significantly affected by elevated CO 2 level. Among carbohydrate concentrations in the phloem sap, significant increases were observed in fructose and glucose in spring wheat under CO 2 enrichment, whereas no changes were observed in OSR. These changes in plant chemistry affected the performance of herbivorous insects (i.e. aphids) in varying ways, positively affecting the relative growth rate (RGR) of R. padi in spring wheat and negatively affecting the RGR of M. persicae on OSR.

【 授权许可】

CC BY|CC BY-NC