Results 121 to 130 of about 57,214 (301)

Molecular Mechanisms of Pollen Tube Growth and Differentiation [PDF]

The Plant Cell, 1993
' The extremely reduced, three-celled, haploid male plant (male gametophyte) of flowering plants has a number of specialized functions to perform. The primary functions are the production of two sperm cells and their transport within the pollen tube through the tissues of the style and ovary into the embryo sac in the ovule, where they participate in ...
openaire   +2 more sources

Rediscovery of Strobilanthes panichanga and discovery of Strobilanthes parryorum (Acanthaceae): two endangered species from the hills of Dima Hasao, Assam, India

Nordic Journal of Botany, EarlyView.
We report on two species of Strobilanthes Blume. Strobilanthes panichanga (Nees) T.Anderson has been rediscovered in the Dima Hasao district of Assam, India, after a very long gap of 150 years, and Strobilanthes parryorum C.E.C.Fisch has been discovered for the first time in Assam, India.
Kapil Kumar Kemprai, Souravjyoti Borah
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

In Vitro Studies on Pollen Viability, Pollen Germination and Pollen Tube Growth of Hornstedtia Conoidea Ridl. – a Philippine Endemic Ginger Species [PDF]

, 2018
Zingiberaceous plants are predominantly propagated through underground rhizomes and seeds. In this study, the viability of pollen, rate of pollen germination and length of pollen tube of the Philippine endemic Hornstedtia conoidea were examined.
Acma, F. M. (Florfe), Mendez, N. P. (Noe)   +1 more
core  

Toward in vitro fertilization in Brachiaria spp. [PDF]

, 2010
Brachiaria are forage grasses widely cultivated in tropical areas. In vitro pollination was applied to accessions of Brachiaria spp. by placing pollen of non-dehiscent anthers on a solid medium near isolated ovaries.
Alves, E.R., Carneiro, V.T.C., Dusi, D., Falcao, R., Valle, C.B., do, Willemse, M.T.M.   +5 more
core   +2 more sources

Genomic structure and ex situ conservation of the North American grapevine Vitis labrusca

PLANTS, PEOPLE, PLANET, EarlyView.
The North American wild grapevine species Vitis labrusca is an important source of disease resistance and climate resilience traits for breeding new grapevine cultivars. To ensure its continued use in breeding, V. labrusca must be accurately identified and genetically diverse material must be conserved.
Zoë Migicovsky, Clay Elzinga, Mia C. Lauzon, Thomas Connor, Kylie DeViller, Claire Dinn, Grace M. Earle, Emma Hockley, Olivia Lennon, Lillian A. Ricker, Peter M. Roberts, Katrina M. Robinson, Aditi Sharma, Paris N. Spencer, Sammy Stockdale, Liam L. Tingley, Annelies Yates, Jason P. Londo, Peter Cousins   +18 more
wiley   +1 more source

The shared benefits of fallen fruits: A novel mechanism stabilizing a nursery pollination mutualism between Sambucus and kateretid beetles

PLANTS, PEOPLE, PLANET, EarlyView.
Understanding how cooperative interactions remain stable matters for biodiversity because many plants rely on specialist insects that can also impose reproductive costs. We studied the interaction between Sambucus sieboldiana and seed‐consuming Heterhelus beetles through detailed field observations and pollination experiments.
Suzu Kawashima, Hidehito Okada, Sadatomo Hisamatsu, Kenji Suetsugu   +3 more
wiley   +1 more source

The pistil as a traffic light: Yellow‐to‐red color change likely influences pollinator visitation patterns in Saxifraga fortunei (Saxifragaceae)

PLANTS, PEOPLE, PLANET, EarlyView.
Flowers can communicate reproductive status to pollinators through visual cues. In Saxifraga fortunei, pistils often changed from yellow to red after pollination, and hoverflies and honeybees preferentially visited flowers with yellow pistils. This pattern suggests that a post‐pollination color shift confined to the pistil can reduce revisits to ...
Kazuma Takizawa, Masayasu Furukawa, Kenji Suetsugu   +2 more
wiley   +1 more source

A Plant-Derived Antifungal Agent, Poacic Acid, Inhibits Germination and Tube Growth of Lily Pollen

Plants
Poacic acid is a novel natural antifungal agent. It inhibits the growth of fungal cells, including budding yeast Saccharomyces cerevisiae, by inhibiting the synthesis of β-1,3-glucan, which is a major component of the fungal cell wall.
Nanami Kobayashi, Yoshikazu Ohya, Yasuko Hayashi, Shuh-ichi Nishikawa   +3 more
doaj   +1 more source

Organelle trafficking, the cytoskeleton, and pollen tube growth

Journal of Integrative Plant Biology, 2014
AbstractThe pollen tube is fundamental for the reproduction of seed plants. Characteristically, it grows relatively quickly and uni‐directionally (“polarized growth”) to extend the male gametophyte to reach the female gametophyte. The pollen tube forms a channel through which the sperm cells move so that they can reach their targets in the ovule.
Cai, Giampiero, PARROTTA, LUIGI, Cresti, Mauro   +2 more
openaire   +5 more sources