Results 131 to 140 of about 4,545,860 (311)

Effect of population reinforcement method, site, and plant characteristics on early establishment of the rare endemic plant species Minuartia smejkalii

Nordic Journal of Botany, EarlyView.
Many habitat‐specialist plant species have been endangered by fragmentation or destruction of their habitats. Minuartia smejkalii is a serpentinophyte endemic to the Czech Republic. It is highly threatened by recent habitat destruction and fragmentation, calling for effective conservation measures.
Alrun Siebenkäs, Karolína Sučíková, Zuzana Münzbergová, Hana Pánková   +3 more
wiley   +1 more source

Potential for gene-flow from cultivated Irish grasses and cereals [PDF]

, 2009
End of project reportThe importance of gene movement from cultivated plants has been highlighted in regard to minimising the movement of seed and/or pollen between GM and non-GM crops (i.e. gene flow). Although ryegrass covers in excess of 90% of Ireland’
Meade, Connor, Mullins, Ewen, Ryan, Eimear   +2 more
core  

Variation in pollen limitation among reproductive modules points to likely resource reallocation in the alpine plant Veratrum grandiflorum

Nordic Journal of Botany, EarlyView.
Pollen limitation, a decrease in seed production due to insufficient pollen receipt, may influence plant demography and the evolution of sexual systems. Its empirical estimation of pollen supplementation of some of the flowers on an individual is well known to be prone to overestimation due to potential resource reallocation among the individual's ...
Xia Jiang, Kai‐Hsiu Chen, Shengman Lyu, Ling Liu, Meixian Yu, John R. Pannell, Guoxing Cao   +6 more
wiley   +1 more source

Pyrrolizidine Alkaloids: The Botanical Origin of Pollen Collected during the Flowering Period of Echium vulgare and the Stability of Pyrrolizidine Alkaloids in Bee Bread

Molecules, 2019
Previous studies have shown that pollen products sold as nutritional supplements and used in apitherapy may contain toxic pyrrolizidine alkaloids (PAs) if bees collect pollen from PA-containing plants, such as Echium vulgare. In this study, the botanical
Christina Kast, Verena Kilchenmann, Hans Reinhard, Katharina Bieri, Otmar Zoller   +4 more
doaj   +1 more source

Monitoring autophagy in rice tapetal cells during pollen maturation

Plant Biotechnology, 2019
We have previously shown that autophagy is required for post meiotic anther development including programmed cell death-mediated degradation of the tapetum and pollen maturation in rice. However, the spatiotemporal dynamics of autophagy in the tapetum remain poorly understood.
Shigeru, Hanamata, Jumpei, Sawada, Bunki, Toh, Seijiro, Ono, Kazunori, Ogawa, Togo, Fukunaga, Ken-Ichi, Nonomura, Takamitsu, Kurusu, Kazuyuki, Kuchitsu   +8 more
openaire   +3 more sources

Floral resource diversity drives spatiotemporal variation in plant–pollinator network structure

Oikos, EarlyView.
Mechanisms underlying community assembly, including those related to species interactions, vary across space and time. Plant–pollinator networks exemplify these dynamics, where link rewiring and turnover mediate adaptations to environmental changes. Bees rely on diverse floral resources (e.g.
Caio S. Ballarin, Felipe W. Amorim, Blanca Arroyo‐Correa, Pedro Jordano   +3 more
wiley   +1 more source

Modern pollen spectra of the Teletskoye Lake shore: early results

Acta Biologica Sibirica
The article presents for the first time the results of an analysis of modern pollen spectra of the Teletskoye Lake shore sampled using 12 Tauber traps installed in various characteristic forest and meadow communities.
Natalia A. Kuryatnikova, Roman Yu. Biryukov, Dmitry V. Zolotov, Natalia S. Malygina, Dmitry V. Chernykh   +4 more
doaj   +1 more source

Searching for a trace of Artemisia campestris pollen in the air

Acta Agrobotanica, 2015
The aim of the study was to determinate whether Artemisia campestris was present in the vicinity of 8 pollen monitoring stations in Poland by examining temporal variations in daily average airborne Artemisia pollen data recorded by Hirst type volumetric ...
Łukasz Grewling, Idalia Kasprzyk, Katarzyna Borycka, Kazimiera Chłopek, Łukasz Kostecki, Barbara Majkowska-Wojciechowska, Małgorzata Malkiewicz, Dorota Myszkowska, Małgorzata Nowak, Krystyna Piotrowska-Weryszko, Małgorzata Puc, Marika Stawińska, Zofia Balwierz, Agata Szymańska, Matt Smith, Aneta Sulborska, Elżbieta Weryszko-Chmielewska   +16 more
doaj   +1 more source

Linking regional and global functional trait data: insights from mammal communities in a fragmented Atlantic Forest landscape

Oikos, EarlyView.
Accurate functional trait data are essential for understanding ecosystem services and processes in fragmented landscapes. We evaluated whether the global EltonTraits 1.0 database adequately represents the functional structure of mammal communities in forest fragments and restoration sites in a highly fragmented Atlantic Forest landscape.
Maria F. R. Godoi, Fábio Z. Farneda, Alan D. Pereira, Marcos Akira‐ Umeno, Fernanda C. Marques, Marcos Robalinho Lima   +5 more
wiley   +1 more source

Pollen holographic images and light-induced fluorescence measurements at the species level

Scientific Data
The data collection presented here consists of holographic images and light-induced fluorescence measurements of pollen grains performed with the SwisensPoleno Jupiter, an instrument for real-time bioaerosol monitoring.
Sophie Erb, Alexis Berne, Bernard Clot, Maria Lbadaoui-Darvas, Gian-Duri Lieberherr, Marie-Pierre Meurville, Fiona Tummon, Benoît Crouzy   +7 more
doaj   +1 more source