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  • Influence
Shared signals -'alarm calls' from plants increase apparency to herbivores and their enemies in nature.
In native populations and laboratory Y-tube choice experiments with transgenic Nicotiana attenuata plants unable to release particular volatiles, it is demonstrated that predatory bugs use terpenoids and green leafvolatiles to locate their prey on herbivore-attacked plants. Expand
Field Experiments with Transformed Plants Reveal the Sense of Floral Scents
Both repellent and attractant were required to maximize capsule production and seed siring in emasculated flowers and flower visitation by native pollinators, whereas nicotine reduced florivory and nectar robbing. Expand
Making sense of nectar scents: the effects of nectar secondary metabolites on floral visitors of Nicotiana attenuata.
  • D. Kessler, I. Baldwin
  • Biology, Medicine
  • The Plant journal : for cell and molecular…
  • 20 February 2007
It is hypothesize that nectar repellents optimize the number of flower visitors per volume of nectar produced, allowing plants to keep their nectar volumes small. Expand
Changing Pollinators as a Means of Escaping Herbivores
It is proposed that this OS-elicited, JA-mediated change in flower phenology complements similarly elicited responses to herbivore attack (direct defenses, indirect defenses, and tolerance responses) that reduce the risk and fitness consequences of herbivory to plants. Expand
Nectar secretion requires sucrose phosphate synthases and the sugar transporter SWEET9
It is shown that SWEET9 is essential for nectar production and can function as an efflux transporter, and that sucrose phosphate synthase genes, encoding key enzymes for sucrose biosynthesis, are highly expressed in nectaries and that their expression is also essential in nectar secretion. Expand
Unpredictability of nectar nicotine promotes outcrossing by hummingbirds in Nicotiana attenuata.
In choice tests using native hummingbirds, it is shown that these important pollinators learn to tolerate high-nicotine nectar but prefer low- nicotine nectar, and show no signs of nicotine addiction. Expand
Petunia flowers solve the defence/apparency dilemma of pollinator attraction by deploying complex floral blends.
It is demonstrated that the emission of single floral-scent compounds can dramatically decrease damage from generalist florivores, and it is concluded that the complex blends that comprise floral scents are likely sculpted by the selective pressures of both pollinators and herbivores. Expand
Solanum nigrum: A model ecological expression system and its tools
It is demonstrated that attack from flea beetles elicits a large transcriptional change consistent with elicitation of both jasmonate and salicylate signalling, and increases in proteinase inhibitor transcripts and activity, and volatile organic compound release. Expand
How scent and nectar influence floral antagonists and mutualists
Both scent and nectar increase outcrossing rates for three, separately tested, pollinators and both traits increase oviposition by a hawkmoth herbivore, with nectar being more influential than scent. Expand
Natural variation in floral nectar proteins of two Nicotiana attenuata accessions
Next-generation sequencing and advanced proteomics are used to profile FN proteins in the opportunistic outcrossing wild tobacco, Nicotiana attenuata, and suggest that nectar chemistry may have a complex function in plant-pollinator-microbe interactions. Expand