title: Bacteria facilitate prey retention by the pitcher plant Darlingtonia californica.
abstract: Bacteria are hypothesized to provide a variety of beneficial functions to plants. Many carnivorous pitcher plants, for example, rely on bacteria for digestion of captured prey. This bacterial community may also be responsible for the low surface tensions commonly observed in pitcher plant digestive fluids, which might facilitate prey capture. I tested this hypothesis by comparing the physical properties of natural pitcher fluid from the pitcher plant Darlingtonia californica and cultured 'artificial' pitcher fluids and tested these fluids' prey retention capabilities. I found that cultures of pitcher leaves' bacterial communities had similar physical properties to raw pitcher fluids. These properties facilitated the retention of insects by both fluids and hint at a previously undescribed class of plant-microbe interaction.
authors.affiliation: Department of Integrative Biology, University of California Berkeley, 3040 Valley Life Sciences Building, Berkeley, CA 94720-3140, USA dave.armitage@gmail.com.|Department of Biological Sciences, University of Notre Dame, 290B Galvin Life Science Center, Notre Dame, IN 46556, USA.
authors.forename: David W
authors.identifier: 0000-0002-5677-0501
authors.initials: DW
authors.lastname: Armitage
mesh_terms: D000818:Animals; D001419:Bacteria; D018407:Bacterial Physiological Phenomena; D007313:Insecta; D018515:Plant Leaves / Q000382:microbiology; D052583:Sarraceniaceae / Q000382:microbiology*; D013500:Surface Tension; D013559:Symbiosis
keywords: Darlingtonia californica; bacteria; carnivorous plant; pitcher plant; rheology; surface tension