Results 31 to 40 of about 1,092,047 (407)
Cell Wall Composition, Biosynthesis and Remodeling during Pollen Tube Growth
Plants, 2013 The pollen tube is a fast tip-growing cell carrying the two sperm cells to the ovule allowing the double fertilization process and seed setting. To succeed in this process, the spatial and temporal controls of pollen tube growth within the female organ ...
Jean-Claude Mollet +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
Environmental DNA, Volume 5, Issue 1, Page 117-131, January 2023., 2023 The diversity of flower‐visiting arthropods in four Danish apple orchards was assessed using molecular (metabarcoding) and non‐molecular techniques. The aim was to obtain a broader overview of arhtropod communities present to support future management practices towards more sustainable agricultural systems.
Nerea Gamonal Gomez +3 more
wiley +1 more source
Actin Bundles in The Pollen Tube [PDF]
International Journal of Molecular Sciences, 2018 The angiosperm pollen tube delivers two sperm cells into the embryo sac through a unique growth strategy, named tip growth, to accomplish fertilization. A great deal of experiments have demonstrated that actin bundles play a pivotal role in pollen tube tip growth.
Hui Su +5 more
openaire +3 more sources
Mechanical design of apertures and the infolding of pollen grain [PDF]
Proc. Natl. Acad. Sci. USA 117, 26600-26607 (2020), 2020 When pollen grains become exposed to the environment, they rapidly desiccate. To protect themselves until rehydration, the grains undergo characteristic infolding with the help of special structures in the grain wall---apertures---where the otherwise thick exine shell is absent or reduced in thickness.
arxiv +1 more source
Earth Surface Processes and Landforms, Volume 47, Issue 15, Page 3515-3545, December 2022., 2022 Glacial geomorphology and postglacial landforms, derived from LiDAR‐based digital terrain models, together with radiocarbon‐dated sediment sequences, form the basis for landscape reconstruction spanning c. 2000 years (10,500–8500 cal. bp). After formation of streamlined terrain and ribbed moraine tracts followed intense glaciofluvial activity at ...
Per Möller +7 more
wiley +1 more source
Plants, 2022 Nitric oxide (NO), as a signal molecule, is involved in the mediation of heavy-metal-stress-induced physiological responses in plants. In this study, we investigated the effect of NO on Camellia sinensis pollen tubes exposed to aluminum (Al) stress ...
Xiaohan Xu +8 more
doaj +1 more source
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.
Jens Kroeger +2 more
openaire +3 more sources
Durotropic Growth of Pollen Tubes [PDF]
Plant Physiology, 2020 To reach the female gametophyte, growing pollen tubes must penetrate different tissues within the pistil, the female reproductive organ of a flower. Past research has identified various chemotropic cues that guide pollen tubes through the transmitting tract of the pistil, which represents the longest segment of its growth path.
Ronny Reimann +9 more
openaire +2 more sources
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