Stimulation of Insect Herbivory by Elevated Temperature Outweighs Protection by the Jasmonate Pathway.

ABSTRACT: Rising global temperatures are associated with increases in the geographic range, population size, and feeding voracity of insect herbivores. Although it is well established that the plant hormone jasmonate (JA) promotes durable resistance to many ectothermic herbivores, little is known about how JA-mediated defense is influenced by rising temperatures. Here, we used the Arabidopsis-Trichoplusiani (cabbage looper) interaction to investigate the relative contribution of JA and elevated temperature to host resistance. Video monitoring of T.ni larval behavior showed that elevated temperature greatly enhanced defoliation by increasing the bite rate and total time spent feeding, whereas loss of resistance in a JA-deficient mutant did not strongly affect these behaviors. The acceleration of inse

SUBMITTER: Havko NE 

PROVIDER: S-EPMC7076421 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature