Greenbug feeding-induced resistance to sugarcane aphids in sorghum

Plants are attacked by multiple insect pest species and herbivory can alter plant defense mechanisms. The responses to a specific herbivore may also contribute the growth/survival on plants. Feeding one modulate defenses, which either facilitate or hamper colonization of subsequent incoming insects. However, little is known about effect sequential sorghum In this study, we demonstrate that specialist aphid, sugarcane aphid (SCA; Melanaphis sacchari ) grows faster than generalist species, greenbug (GB; Schizaphis graminum ). We determined how pre-infestation SCA affected invasion GB vice-versa . Our experiments revealed reproduction was lower GB-primed plants, however, reverse not true. To assess differences in defenses induced vs. aphids, monitored expression salicylic acid (SA) jasmonic (JA) marker genes, flavonoid biosynthetic pathway genes after 48 h infestation. results indicated infestation higher SA JA-related ( DFR , FNR FNSII compared Overall, our suggested GB-infested plants activate via phytohormones flavonoids at early time points hampers SCA, as well explain reproductive success GB.