Results 91 to 100 of about 1,088,744 (389)

Floral scent of artificial hybrids between two Schiedea species that share a moth pollinator

American Journal of Botany, EarlyView.
Abstract Premise In flowering plants, pollinators' ability to recognize chemical displays of hybrids may erode reproductive barriers. Hybrids may produce novel or altered floral scent blends that are unattractive, or scents similar to either parent that remain attractive and promote backcrossing.
John M. Powers, Stephen G. Weller, Ann K. Sakai, Diane R. Campbell   +3 more
wiley   +1 more source

Effects of post-translational modifications catalysed by pollen transglutaminase on the functional properties of microtubules and actin filaments [PDF]

, 2009
TGases (transglutaminases) are a class of calcium-dependent enzymes that catalyse the interactions between acyl acceptor glutamyl residues and amine donors, potentially making crosslinks between proteins.
Bonner, PLR, Cai, G, Cresti, M, Del, Duca, Serafini-Fracassini, D   +4 more
core  

Pollen tube growth and the pollen-tube pathway of Nymphaea odorata (Nymphaeaceae) [PDF]

Botanical Journal of the Linnean Society, 2010
An important aspect of the evolution of carpel closure, or angiospermy, is the relationship between pollen tube growth patterns and internalization of the pollen-tube pathway. True carpel closure, involving postgenital fusion of inner carpel margins, is inferred to have arisen once within the ancient order Nymphaeales, in the common ancestor of ...
Joseph H. Williams, Matthew T. Lettre, Robert T. Mcneilage, Mackenzie L. Taylor   +3 more
openaire   +2 more sources

Waste Management and Waste Disposal Detected by Combination of Analytical Methods: Late Bronze Age Březnice Settlement Site (South Bohemia)

Archaeological Prospection, EarlyView.
ABSTRACT Waste disposal processes and landfill management are crucial subjects in the field of settlement archaeology. Our study is focused on understanding the processes that are connected to the formation of the infills of settlement features and the recycling of the building materials (daub and wood) and waste management.
Tereza Šálková, Kristýna Budilová, Jaromír Kovárník, Antonín Majer, Jan Novák, Jaroslav Pavelka, Barbora Strouhalová, Libor Vobejda, Ondřej Šťastný, Martin Kuna, Ondřej Chvojka   +10 more
wiley   +1 more source

Determination of cardinal temperatures for sugar apple ( Annona squamosa L.)

Ciência e Agrotecnologia, 2016
The sugar apple is highly dependent on the pollination and fruit tree pollen performance is crucial for successful fertilization and fruit set. The objective of this study was to determine the cardinal temperatures for in vitro pollen grains germination ...
Bruno Rafael Alves Rodrigues, Rayane Carneiro dos Santos, Silvia Nietsche, Maria Olívia Mercadante-Simões, Isabella Renata Gomes da Cunha, Marlon Cristian Toledo Pereira   +5 more
doaj   +1 more source

Effect of boron on directionality of pollen tube growth in Petunia and Agapanthus [PDF]

, 1990
The effect of boron on pollen tube growth was tested using Petunia Juss. styles and the semivivo technique, while Agapanthus L’Hérit. pollen was used for in vitro germination experiments.
Coetzer, L.A., Lock, Jackie J., Robbertse, P.J., Stoffberg, Elzabé   +3 more
core   +1 more source

Green Propolis Extract‐Mediated Synthesis of Biogenic Silver Nanoparticles: In Vitro Antileishmanial and Antibacterial Activities, Cytotoxicity and Ex Vivo Irritation Testing

Chemistry &Biodiversity, EarlyView.
ABSTRACT This study describes the green synthesis, characterization, and biological evaluation of silver nanoparticles (AgNPs) obtained from green propolis (AgNPs‐PRO). Before nanoparticles synthesis, a hydroethanolic green propolis extract (GPE) was obtained through ultrasound‐assisted extraction and characterized by high‐performance liquid ...
Erica Tirzah S. Lima, Victoria L. S. Santos, Wanessa J. S. Mota, Frederico S. Martins, Ricardo L. C. de Albuquerque‐Junior, André L. S. Santos, Simone S. C. Oliveira, Jéssica A. de Lima, Adriana de Jesus Santos, Cochiran P. dos Santos, Sona Jain, Eliana B. Souto, Juliana C. Cardoso, Patrícia Severino   +13 more
wiley   +1 more source

The effect of intracellular calcium level regulators on the synthesis of pollen tube callose in Oenothera biennis L.

Acta Societatis Botanicorum Poloniae, 2014
It is shown that callose synthesis in the Oenothera biennis pollen tube is regulated by the endogenous Ca2+ level. Calcium antagonists reduced the amount of callose in the wall above the tip of the pollen tube (Verapamil - calcium channels blocker) and ...
Elżbieta Bednarska
doaj   +1 more source

OsSNDP3 Functions for the Polar Tip Growth in Rice Pollen Together with OsSNDP2, a Paralog of OsSNDP3

Rice, 2022
Understanding pollen tube growth is critical for crop yield maintenance. The pollen tube provides a path for sperm cells for fertilization with egg cells.
Sunok Moon, Yu-Jin Kim, Ha Eun Park, Junhyup Kim, Yun Shil Gho, Woo-Jong Hong, Eui-Jung Kim, Su Kyoung Lee, Byung-Chang Suh, Gynheung An, Ki-Hong Jung   +10 more
doaj   +1 more source

A Rho family GTPase controls actin dynamics and tip growth via two counteracting downstream pathways in pollen tubes. [PDF]

, 2005
Tip growth in neuronal cells, plant cells, and fungal hyphae is known to require tip-localized Rho GTPase, calcium, and filamentous actin (F-actin), but how they interact with each other is unclear.
Dowd, Peter, Fu, Ying, Gilroy, Simon, Gu, Ying, Li, Shundai, Vernoud, Vanessa, Yang, Zhenbiao   +6 more
core   +3 more sources