Results 211 to 220 of about 7,904 (250)

Floral nectar production: what cost to a plant?

Biological Reviews, 2023
ABSTRACTFloral nectar production is central to plant pollination, and hence to human wellbeing. As floral nectar is essentially a solution in water of various sugars, it is likely a valuable plant resource, especially in terms of energy, with plants experiencing costs/trade‐offs associated with its production or absorption and adopting mechanisms to ...
Zong-Xin Ren, Graham Pyke
exaly   +3 more sources

Bacterial communities in floral nectar

Environmental Microbiology Reports, 2011
Summary Floral nectar is regarded as the most important reward available to animal‐pollinated plants to attract pollinators. Despite the vast amount of publications on nectar properties, the role of nectar as a natural bacterial habitat is yet unexplored.
Svetlana, Fridman, Ido, Izhaki, Yoram, Gerchman, Malka, Halpern   +3 more
openaire   +2 more sources

Nectar: properties, floral aspects, and speculations on origin

Trends in Plant Science, 2004
Although nectar is crucial for most pollinators, its evolutionary origin has received scant attention. Nectar is derived from the phloem solution. Both have high sugar concentrations (usually 10-30% solutes by fresh mass); the main solute in the phloem is sucrose, whereas nectar can also contain considerable amounts of fructose and glucose. The phloem,
Erick, De la Barrera, Park S, Nobel
openaire   +2 more sources

A novel role for proline in plant floral nectars

Naturwissenschaften, 2006
Plants offer metabolically rich floral nectar to attract visiting pollinators. The composition of nectar includes not only sugars, but also amino acids. We have examined the amino acid content of the nectar of ornamental tobacco and found that it is extremely rich (2 mM) in proline.
Clay, Carter, Sharoni, Shafir, Lia, Yehonatan, Reid G, Palmer, Robert, Thornburg   +4 more
openaire   +2 more sources

A review of the methods for storing floral nectars in the field

Plant Biology, 2017
AbstractThe knowledge of floral nectar sugar characteristics, such as concentration, ratio and mass, is essential to understand the complex nature of nectar production and pollination systems. Although nectar is commonly stored in ecology, storage reliability and effectiveness have rarely been quantified.
B. Amato, S. Petit
openaire   +2 more sources

Remote perception of floral nectar by bumblebees

Oecologia, 1984
On both artificial flowers in the laboratory and certain plant species in the field, bumblebees often closely approached flowers and then departed without probing for nectar. In laboratory experiments where nectar rewards were associated with subtle visual or olfactory cues, bumblebees approached and avoided non-rewarding flowers.
openaire   +2 more sources

Variation in the Concentration of Floral Nectars

Journal of Economic Entomology, 1930
A preliminary report on the extent to which variation has been found in the concentration of floral nectars.
openaire   +1 more source

Does acoustic priming ‘sweeten the pot’ of floral nectar?

Ecology Letters, 2020
AbstractA recent claim that evening primrose flowers adaptively secrete nectar in response to vibrations from hovering bees lacks supporting evidence. The authors fail to demonstrate that bees can access the concealed nectar and that their visits enhance plant fitness. Reanalysis of the authors’ data raises additional concerns about their conclusions.
Robert A. Raguso, Lawrence D. Harder, Steven D. Johnson   +2 more
openaire   +2 more sources

Floral Nectar Spurs and Diversification

International Journal of Plant Sciences, 1997
Key innovations are thought to be especially important adaptations that confer the ability to utilize resources in a novel manner and may therefore allow taxa to diversify. Here I review the data indicating that the evolution of floral nectar spurs represents a key innovation in Aquilegia and many additional groups.
openaire   +1 more source