Solanaceae Source

A global taxonomic resource for the nightshade family

Sept 10th, 2021 - Marcela Moré

Next SolSeminar will be presented by Marcela Moré on Corolla color and floral scent evolution in the florally diverse genus Jaborosa: influence of ecological and environmental factors

Abstract. Flower phenotype may diverge within plant lineages when moving across “pollinator climates” (i.e. geographic differences in pollinator abundance or preference). We explored the potential importance of pollinators as drivers of corolla color and floral scent diversification in the nightshade genus Jaborosa, taking into account color perception capabilities of the actual pollinators (nocturnal hawkmoths vs. saprophilous flies) and phylogenetic relationships among species under a geographic perspective using an ecological niche modelling approach (ENM). Our results revealed two major evolutionary themes in Jaborosa: (i) a ‘warm Lowland Subtropical nectar-rewarding clade’ with large white hawkmoth-pollinated flowers that emit fragrances dominated by oxygenated aromatic or sesquiterpenoid volatiles and clustered together in the visual space of a model hawkmoth (Manduca sexta); (ii) a ‘cool-temperate brood-deceptive clade’ of largely fly-pollinated species found at high altitudes (Andes) or latitudes (Patagonian Steppe) that emit foul odors including cresol, indole and sulfuric volatiles that clustered together in the visual space of a model blowfly (Lucilia sp.). Our findings suggest that habitat and pollination mode are inextricably linked in the history of this South American plant lineage.

When? Friday Sept 10th 4 pm (GMT+1)

The zoom link to join the meeting is Meeting ID: 943 3314 6166, password: Solanaceae

Watch this talk in TouTube:

Friday, September 10, 2021 - 17:00
Wed, 2022-01-19 17:09 -- rocio

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