C Geldert1, Z Abdo1, J E Stewart2, Arathi H S3. 1. College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, USA. 2. Department of Agricultural Biology, Colorado State University, Fort Collins, CO, USA. 3. USDA/ARS, WRRC Invasive Species and Pollinator Health Research Unit, Davis, CA, USA.
Abstract
AIM: Determine the impact of beneficial phytochemicals on diversity and abundance of the gut microbiome in the honey bee (Apis mellifera). METHODS AND RESULTS: Eight-day-old honey bee workers were fed 25 ppm of phytochemical (caffeine, gallic acid, p-coumaric acid or kaempferol) in 20% sucrose. Guts of bees collected at 3 and 6 days were excised and subjected to next-generation sequencing for bacterial 16S and fungal ITS regions. Although phytochemical supplementation fostered gut microbial diversity and abundance, the patterns differed between phytochemicals and there was a temporal stabilization of the bacterial community. While bacterial and fungal communities responded differently, all phytochemical treatments displayed increased abundance of the most represented bacterial genera, Snodgrassella sp. and Lactobacillus sp. CONCLUSIONS: Phytochemical supplementation improves gut microbial diversity and abundance, reiterating the need for diverse habitats that provide bees with access to pollen and nectar rich in these micronutrients. Diverse gut microbiota can provide a strong line of defense for bees against biotic stressors while improving worker bee lifespan. SIGNIFICANCE AND IMPACT OF THE STUDY: This is the first report on the impact of phytochemical supplementation on gut microbiota in honey bees and these findings have implications for strategic hive management through standardization of effective phytochemical and probiotic feed supplements.
AIM: Determine the impact of beneficial phytochemicals on diversity and abundance of the gut microbiome in the honey bee (Apis mellifera). METHODS AND RESULTS: Eight-day-old honey bee workers were fed 25 ppm of phytochemical (caffeine, gallic acid, p-coumaric acid or kaempferol) in 20% sucrose. Guts of bees collected at 3 and 6 days were excised and subjected to next-generation sequencing for bacterial 16S and fungal ITS regions. Although phytochemical supplementation fostered gut microbial diversity and abundance, the patterns differed between phytochemicals and there was a temporal stabilization of the bacterial community. While bacterial and fungal communities responded differently, all phytochemical treatments displayed increased abundance of the most represented bacterial genera, Snodgrassella sp. and Lactobacillus sp. CONCLUSIONS: Phytochemical supplementation improves gut microbial diversity and abundance, reiterating the need for diverse habitats that provide bees with access to pollen and nectar rich in these micronutrients. Diverse gut microbiota can provide a strong line of defense for bees against biotic stressors while improving worker bee lifespan. SIGNIFICANCE AND IMPACT OF THE STUDY: This is the first report on the impact of phytochemical supplementation on gut microbiota in honey bees and these findings have implications for strategic hive management through standardization of effective phytochemical and probiotic feed supplements.
Authors: Gordon Fitch; Laura L Figueroa; Hauke Koch; Philip C Stevenson; Lynn S Adler Journal: Int J Parasitol Parasites Wildl Date: 2022-03-07 Impact factor: 2.674
Authors: Ali Zein Alabiden Tlais; Andrea Polo; Pasquale Filannino; Vincenzo Cantatore; Marco Gobbetti; Raffaella Di Cagno Journal: Microb Biotechnol Date: 2022-04-13 Impact factor: 6.575