@article {22349, title = {Variation in Manduca sexta pollination-related floral traits and reproduction in a wild tobacco plant}, journal = {Frontiers in Ecolology and Evolution}, volume = {9}, year = {2021}, month = {07/2021}, pages = {680463}, chapter = {680463}, abstract = {

\"Most flowering plants depend on animal pollination for successful sexual reproduction. Floral signals such as color, shape, and odor are crucial in establishing this (often mutualistic) interaction. Plant and pollinator phenotypes can vary temporally but also spatially, thus creating mosaic-like patterns of local adaptations. Here, we investigated natural variation in floral morphology, flower volatile emission, and phenology in four accessions of a self-compatible wild tobacco, Nicotiana attenuata, to assess how these traits match the sensory perception of a known pollinator, the hawkmoth Manduca sexta. These accessions differ in floral traits and also in their habitat altitudes. Based on habitat temperatures, the accession occurring at the highest altitude (California) is less likely to be visited by M. sexta, while the others (Arizona, Utah 1, and Utah 2) are known to receive M. sexta pollinations. The accessions varied significantly in flower morphologies, volatile emissions, flower opening, and phenology, traits likely important for M. sexta perception and floral handling. In wind tunnel assays, we assessed the seed set of emasculated flowers after M. sexta visitation and of natural selfed and hand-pollinated selfed flowers. After moth visitations, plants of two accessions (Arizona and Utah 2) produced more capsules than the other two, consistent with predictions that accessions co-occurring with M. sexta would benefit more from the pollination services of this moth. We quantified flower and capsule production in four accessions in a glasshouse assay without pollinators to assess the potential for self-pollination. The two Utah accessions set significantly more seeds after pollen supplementation compared with those of autonomous selfing flowers, suggesting a greater opportunistic benefit from efficient pollinators than the other two. Moreover, emasculated flowers of the accession with the most exposed stigma (Utah 2) produced the greatest seed set after M. sexta visitation. This study reveals intraspecific variation in pollination syndromes that illuminate the potential of a plant species to adapt to local pollinator communities, changing environments, and altered pollination networks.\"

}, keywords = {FLORAL MORPHOLOGY, FLORAL SCENT, MANDUCA, NICOTIANA, PHENOLOGY, PHYSIOLOGY, POLLINATION, POLLINATOR SPECIFICITY, SOLANACEAE, SPHINGIDAE, TRAITS, USA}, doi = {10.3389/fevo.2021.680463}, author = {Bing, J. and Li, X. and Haverkamp, A. and Baldwin, I.T. and Hansson, B.S. and Knaden, M. and Yon, F.} } @article {22077, title = {Hawkmoth pollination in the genus Oenothera}, journal = {Aliso: A Journal of Systematic and Evolutionary Botany}, volume = {5}, year = {1963}, month = {04/1963}, pages = {357-419}, chapter = {357}, keywords = {CIRCADIAN RHYTHMS, EUMORPHA, FLIGHT PERIOD, HYLES, MANDUCA, NECTAR COMPOSITION, OENOTHERA, ONAGRACEAE, POLLINATION, POLLINATOR SPECIFICITY, SPHINGIDAE, SPHINX, USA}, doi = {10.5642/aliso.19640504.02}, author = {Gregory, D.P.} } @article {22077, title = {Hawkmoth pollination in the genus Oenothera}, journal = {Aliso: A Journal of Systematic and Evolutionary Botany}, volume = {5}, year = {1963}, month = {04/1963}, pages = {357-419}, chapter = {357}, keywords = {CIRCADIAN RHYTHMS, EUMORPHA, FLIGHT PERIOD, HYLES, MANDUCA, NECTAR COMPOSITION, OENOTHERA, ONAGRACEAE, POLLINATION, POLLINATOR SPECIFICITY, SPHINGIDAE, SPHINX, USA}, doi = {10.5642/aliso.19630503.12}, author = {Gregory, D.P.} } @article {21834, title = {Pollination biology of four sympatric species of Habenaria (Orchidaceae: Orchidinae) from southern Brazil}, journal = {Botanical Journal of the Linnean Society}, volume = {170}, year = {2012}, month = {08/2012}, pages = {141-156}, chapter = {141}, abstract = {

\"The pollination process and breeding system of the sympatric Habenaria johannensis, H.\ macronectar, H.\ megapotamensis and H.\ montevidensis was documented for native populations from Rio Grande do Sul, Brazil. All species investigated offer a nectar reward (mean values of total sugars ranging from 18 to 26\%) concealed in a spur. Habenaria montevidensis is pollinated by butterflies (Hesperiidae, especially of the genus Urbanus) that carry pollinaria on their eyes; the other three species are pollinated by Sphingidae. Habenaria johannensis is pollinated by the moths Manduca rustica and M.\ sexta that carry the pollinaria at the base of the proboscis. Habenaria macronectar is pollinated by the moths Eumorpha labrusca [sic] and M. cf. lucetius, and these bear pollinaria between the palpi. Habenaria megapotamensis is pollinated by moths of M. cf. lucetius that bear the pollinaria on the proboscis. All species studied are self-compatible, but pollinator dependent. They also displayed high reproductive success (ranging from 69.48 to 97.40\%) and male efficiency factors slightly higher than 1, suggesting that at least one flower was pollinated for each flower acting as pollen donor. At the study sites, the investigated Habenaria spp. are isolated (in terms of pollination) by a set of factors that includes differing floral morphologies, different pollinators and/or different pollinarium placement on the pollinator.\"

}, keywords = {BRAZIL, EUMORPHA, FLORAL MORPHOLOGY, HABENARIA, MANDUCA, NECTAR COMPOSITION, ORCHIDACEAE, POLLINATION, POLLINATOR SPECIFICITY, SPHINGIDAE}, url = {https://doi.org/10.1111/j.1095-8339.2012.01285.x}, author = {Pedron, M. and Buzatto, C.R. and Singer, R.B. and Batista, J.A.N. and Moser, A.} } @article {21426, title = {Specialized use of pollen vectors by Caesalpinia gilliesii, a legume species with brush-type flowers}, journal = {Biological Journal of the Linnean Society}, volume = {88}, year = {2006}, pages = {579-592}, chapter = {579}, keywords = {AGRIUS, ARGENTINA, CAESALPINIA, CALLIONIMA, FABACEAE, HYLES, LINTNERIA, MANDUCA, POLLINATION, POLLINATOR SPECIFICITY, PROBOSCIS, SPHINGIDAE, WORLDMAP1, XYLOPHANES}, author = {Mor{\'e}, M. and S{\'e}rsic, A.N. and Cocucci, A.A.} } @article {19655, title = {Trumpet flowers of the Sonoran Desert: floral biology of Peniocereus cacti and sacred Datura}, journal = {International Journal of Plant Science}, volume = {164}, year = {2003}, month = {2003}, pages = {877-892}, chapter = {877}, keywords = {AGRIUS, APIS, CACTACEAE, DATURA, FLORAL SCENT, HYLES, MANDUCA, NECTAR COMPOSITION, PENIOCEREUS, POLLINATION, POLLINATOR SPECIFICITY, SOLANACEAE, SPHINGIDAE}, url = {https://www.journals.uchicago.edu/doi/epdf/10.1086/378539}, author = {Raguso, R.A. and Henzel, C. and Buchmann, S.L. and Nabhan, G.P.} }