Aphid herbivory drives asymmetry in carbon for nutrient exchange between plants and an arbuscular mycorrhizal fungus

Published: 26-02-2020| Version 1 | DOI: 10.17632/dwm2ttb5rv.1
Michael D. Charters


Study conducted to investigate the effect of manipulating the source and sink strengths of plant C resources on carbon for nutrient (P) exchange between wheat and an arbucular mycorrhizal fungus. C source strength was manipulated by growing plants at ambient and elevated atmospheric [CO2]. C sink strength was manipulated by the addition or exclusion of Rhopalosiphum padi aphids. Our research questions were as follows: (i) Does increasing external C sink strength (i.e. addition of aphids) reduce plant C allocation to an AM fungus? (ii) Does increasing C source strength (i.e. elevated [CO2]) increase plant C allocation to an AM fungus? (iii) Can increasing C source strength mitigate increased external plant C sinks? (iv) Does plant assimilation of mycorrhizal-acquired nutrients change relative to plant C allocation?