Results 21 to 30 of about 8,724 (245)

Comparison of sugars, iridoid glycosides and amino acids in nectar and phloem sap of Maurandya barclayana, Lophospermum erubescens, and Brassica napus. [PDF]

PLoS ONE, 2014
BACKGROUND: Floral nectar contains sugars and amino acids to attract pollinators. In addition, nectar also contains different secondary compounds, but little is understood about their origin or function. Does nectar composition reflect phloem composition,
Gertrud Lohaus, Michael Schwerdtfeger
doaj   +1 more source

Pollinator adaptation and the evolution of floral nectar sugar composition [PDF]

Journal of Evolutionary Biology, 2016
AbstractA long‐standing debate concerns whether nectar sugar composition evolves as an adaptation to pollinator dietary requirements or whether it is ‘phylogenetically constrained’. Here, we use a modelling approach to evaluate the hypothesis that nectar sucrose proportion (NSP) is an adaptation to pollinators.
Abrahamczyk, Stefan, Kessler, Michael, Hanley, Daniel, Karger, Dirk Nikolaus, Müller, Matthias P J, Knauer, Anina C, Keller, Felix, Schwerdtfeger, Michael, Humphreys, Aelys M   +8 more
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Metabolomic Profiling of Nicotiana Spp. Nectars Indicate That Pollinator Feeding Preference Is a Stronger Determinant Than Plant Phylogenetics in Shaping Nectar Diversity

Metabolites, 2020
Floral nectar is a rich secretion produced by the nectary gland and is offered as reward to attract pollinators leading to improved seed set. Nectars are composed of a complex mixture of sugars, amino acids, proteins, vitamins, lipids, organic and ...
Fredy A. Silva, Elizabeth C. Chatt, Siti-Nabilla Mahalim, Adel Guirgis, Xingche Guo, Daniel S. Nettleton, Basil J. Nikolau, Robert W. Thornburg   +7 more
doaj   +1 more source

Nectar robbing by bees affects the reproductive fitness of the distylous plant Tirpitzia sinensis (Linaceae)

Ecology and Evolution, 2023
Nectar robbing can affect plant reproductive success directly by influencing female and male fitness, and indirectly by affecting pollinator behavior. Flowers have morphological and chemical features that may protect them from nectar robbers.
Xiaoyue Wang, Renxiu Yao, Xiaoqin Lv, Yin Yi, Xiaoxin Tang   +4 more
doaj   +1 more source

Intraspecific Variation in Nectar Chemistry and Its Implications for Insect Visitors: The Case of the Medicinal Plant, Polemonium Caeruleum L.

Plants, 2020
Floral nectar, being a primary reward for insect visitors, is a key factor in shaping plant–pollinator interactions. However, little is known about the variability in nectar traits, which could potentially affect pollinators and the reproduction of the ...
Justyna Ryniewicz, Mateusz Skłodowski, Magdalena Chmur, Andrzej Bajguz, Katarzyna Roguz, Agata Roguz, Marcin Zych   +6 more
doaj   +1 more source

Nectar-dwelling microbes of common tansy are attractive to its mosquito pollinator, Culex pipiens L.

BMC Ecology and Evolution, 2021
Background There is widespread interkingdom signalling between insects and microbes. For example, microbes found in floral nectar may modify its nutritional composition and produce odorants that alter the floral odor bouquet which may attract insect ...
D. A. H. Peach, C. Carroll, S. Meraj, S. Gomes, E. Galloway, A. Balcita, H. Coatsworth, N. Young, Y. Uriel, R. Gries, C. Lowenberger, M. Moore, G. Gries   +12 more
doaj   +1 more source

The Chemical Composition of the Nectar of the Poinsettia [PDF]

Botanical Gazette, 1892
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +1 more source

Pyridine-type alkaloid composition affects bacterial community composition of floral nectar [PDF]

Scientific Reports, 2015
AbstractPyridine-type alkaloids are most common in Nicotiana species. To study the effect of alkaloid composition on bacterial community composition in floral nectar, we compared the nicotine-rich wild type (WT) N. attenuata, the nicotine biosynthesis-silenced N. attenuata that was rich in anatabine and the anabasine-rich WT N. glauca plants.
Yana Aizenberg-Gershtein, Ido Izhaki, Rakesh Santhanam, Pavan Kumar, Ian T. Baldwin, Malka Halpern   +5 more
openaire   +3 more sources

Intraspecific variability of floral nectar volume and composition in rapeseed (Brassica napus L. var. oleifera)

Frontiers in Plant Science, 2016
Numerous angiosperms rely on pollinators to ensure efficient flower fertilization, offering a reward consisting of nourishing nectars produced by specialized floral cells, known as nectaries.
Michele eBertazzini, Giuseppe eForlani
doaj   +1 more source

Temporal and spatial variation in bacterial communities of “Jonagold” apple (Malus x domestica Borkh.) and “Conference” pear (Pyrus communis L.) floral nectar

MicrobiologyOpen, 2019
Production of many agricultural crops and fruits strongly depends on pollinators. For instance, pome fruits such as apple and pear are highly dependent on pollination for fruit set, fruit quality, and yield.
Jolien Smessaert, Maarten Van Geel, Christel Verreth, Sam Crauwels, Olivier Honnay, Wannes Keulemans, Bart Lievens   +6 more
doaj   +1 more source