Reduction of plant suitability for corn leaf aphid under elevated carbon dioxide condition

[en] In the current context of global climate change, atmospheric carbon dioxide (CO2) concentrations are continuously rising with potential influence on plant – herbivore interactions. The effect of elevated CO2 (eCO2) on feeding behavior of corn leaf aphid, Rhopalosiphum maidis (Hemiptera: Aphididae) on barley seedlings Hordeum vulgare L was tracked using electrical penetration graph (EPG). The nutrient content of host plant and the developmental indexes of aphids under eCO2 and ambient CO2 (aCO2) conditions were also investigated. Barley seedlings under eCO2 concentration had lower contents of crude protein and amino acids. EPG analysis showed the plants cultivated under eCO2 influenced the aphid feeding behavior, by prolonging the total pre-probation time of the aphids (wandering and locating the feeding site) and the ingestion of passive phloem sap. Moreover, fresh body weight, fecundity and intrinsic population growth rate of R. maidis was significantly decreased in eCO2 in contrast to aCO2 condition. Our findings suggested that changes in plant nutrition caused by eCO2, mediated via the herbivore host could affect insect feeding behavior and population dynamics.

Disciplines :

Entomology & pest control

Author, co-author :

Chen, Yu ; Université de Liège - ULiège > Doct. sc. agro. & ingé. biol. (Paysage)

Serteyn, Laurent ; Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Gestion durable des bio-agresseurs

Wang, Zhenying

He, KangLai

Francis, Frédéric ; Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Gestion durable des bio-agresseurs

Language :

English

Title :

Reduction of plant suitability for corn leaf aphid under elevated carbon dioxide condition

Publication date :

22 May 2019

Journal title :

Environmental Entomology

ISSN :

0046-225X

eISSN :

1938-2936

Publisher :

Entomological Society of America, United States - Maryland

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

https://doi.org/10.1093/ee/nvz045

Funders :

National Key R&D Program of China (2017YFD0201800) and Erasmus Mundus program.

Available on ORBi :

since 27 June 2019

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