Effects of plant growth-promoting rhizobacteria (PGPR) on the egg-laying behavior of Spodoptera exigua

Treating crops with plant growth-promoting rhizobacteria (PGPR) which have been shown to increase plant growth and enhancing plant health in a variety of ways. Previously, these bacteria have been studied in models using only one to two strains of PGPR, limiting our understanding of how different strains of PGPR are capable of impacting their interactions with insects. To determine any effects of PGPR on the oviposition behavior of Spodoptera exigua on PGPR-treated cotton plants, an egg-laying choice study was performed. The total number of eggs and egg batches laid on cotton plants treated with PGPR versus untreated cotton plants were recorded. This information will broaden our understanding of the role PGPR plays in affecting lepidopteran pest behavior.