Results 41 to 50 of about 52,751 (307)
Frontiers in Plant Science, 2022 Boron (B) is essential to plant development. However, excessive B is toxic to plants. This research was performed to evaluate the effects of B toxicity on cell wall architecture of Chinese chestnut (Castanea mollissima Blume) pollen tubes with emphasis ...
Weiwei Zhang +11 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 +6 more
core +3 more sources
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. +5 more
core +2 more sources
Plants, 2020 Pollen is a highly specialized structure for sexual plant reproduction. Early stages of pollen germination require the transition from dormant state to active metabolism.
Maria Breygina +3 more
doaj +1 more source
An extracellular transglutaminase is required for apple pollen tube growth [PDF]
, 2010 An extracellular form of the calcium-dependent protein-crosslinking enzyme TGase (transglutaminase) was demonstrated to be involved in the apical growth of Malus domestica pollen tube.
Bonner, PL +14 more
core +3 more sources
Transport Logistics in Pollen Tubes [PDF]
Molecular Plant, 2013 Cellular organelles move within the cellular volume and the effect of the resulting drag forces on the liquid causes bulk movement in the cytosol. The movement of both organelles and cytosol leads to an overall motion pattern called cytoplasmic streaming or cyclosis.
Chebli, Youssef +2 more
openaire +2 more sources
Distinct short-range ovule signals attract or repel
BMC Plant Biology, 2006 Background Pollen tubes deliver sperm after navigating through flower tissues in response to attractive and repulsive cues. Genetic analyses in maize and Arabidopsis thaliana and cell ablation studies in Torenia fournieri have shown that the female ...
Preuss Daphne, Palanivelu Ravishankar
doaj +1 more source
Nitric oxide is involved in growth regulation and re-orientation of pollen tubes [PDF]
, 2004 Nitric oxide (NO) controls diverse functions in many cells and organs of animals. It is also produced in plants and has a variety of effects, but little is known about their underlying mechanisms. In the present study, we have discovered a role for NO in
Feijo, JA, Porterfield, DM, Prado, AM
core +2 more sources
Signaling in Pollen Tube Growth: Beyond the Tip of the Polarity Iceberg
Plants, 2019 The coordinated growth of pollen tubes through floral tissues to deliver the sperm cells to the egg and facilitate fertilization is a highly regulated process critical to the Angiosperm life cycle.
Nolan Scheible, Andrew McCubbin
doaj +1 more source
Effects of Alternaria alternata f.sp. lycopersici toxins on pollen [PDF]
, 1988 Effects of the phytotoxic compounds (AAL-toxins) isolated from cell-free culture filtrates of Alternaria alternata f.sp. lycopersici on in vitro pollen development were studied. AAL-toxins inhibited both germination and tube growth of pollen from several
Bino, R.J., +4 more
core +2 more sources