Results 11 to 20 of about 1,606,571 (253)

The egg cell is preferentially fertilized in Arabidopsis double fertilization. [PDF]

J Integr Plant Biol, 2022
In flowering plants (angiosperms), fertilization of the egg cell by one sperm cell produces an embryo, whereas fusion of a second sperm cell with the central cell generates the endosperm.
Li L, Hou S, Xiang W, Song Z, Wang Y, Zhang L, Li J, Gu H, Dong J, Dresselhaus T, Zhong S, Qu LJ.   +11 more
europepmc   +2 more sources

Removal of the endoplasma membrane upon sperm cell activation after pollen tube discharge

Frontiers in Plant Science, 2023
In pollen and pollen tubes, immotile sperm cells are enclosed by an inner vegetative plasma membrane (IVPM), a single endomembrane originating from the vegetative-cell plasma membrane.
Naoya Sugi, Rie Izumi, Shun Tomomi, Daichi Susaki, Tetsu Kinoshita, Daisuke Maruyama   +5 more
doaj   +1 more source

Central Cell in Flowering Plants: Specification, Signaling, and Evolution

Frontiers in Plant Science, 2020
During the reproduction of animals and lower plants, one sperm cell usually outcompetes the rivals to fertilize a single egg cell. But in flowering plants, two sperm cells fertilize the two adjacent dimorphic female gametes, the egg and central cell ...
Hong-Ju Li, Wei-Cai Yang, Wei-Cai Yang
doaj   +1 more source

Live imaging of calcium spikes during double fertilization in Arabidopsis [PDF]

Nature Communications, 2014
Hidenori Takeuchi, Tetsuya Higashiyama, Anja Geitmann   +2 more
exaly   +2 more sources

Long-Term Manure Amendment Sustains Black Soil Biodiversity by Mitigating Acidification Induced by Chemical N Fertilization

Microorganisms, 2022
The long-term use of chemical N fertilization may have a negative impact upon soil fertility and quality. On the contrary, organic fertilization is considered a sustainable development agricultural strategy.
Lei Sun, Yongjie Yu, Evangelos Petropoulos, Xiaoyang Cui, Shuang Wang   +4 more
doaj   +1 more source

Poles Apart: Monosporic, Bisporic, and Tetrasporic Embryo Sacs Revisited

Frontiers in Ecology and Evolution, 2020
Bisporic embryo sacs contain nuclei derived from two members of a megaspore tetrad whereas tetrasporic embryo sacs contain nuclei derived from all four members of a tetrad.
David Haig
doaj   +1 more source

Punk rock as popular theatre [PDF]

, 2007
Punk rock performance consciously draws on popular theatre forms like music hall and stand-up comedy, as exemplified by the occasion when Max Wall appeared with Ian Dury at the Hammersmith Odeon.
Double, Oliver
core   +1 more source

Simple Whole-Mount Staining Protocol of F-Actin for Studies of the Female Gametophyte in Agavoideae and Other Crassinucellate Ovules

Frontiers in Plant Science, 2020
During plant sexual reproduction, F-actin takes part in the elongation of the pollen tube and the movement of sperm cells along with it. Moreover, F-actin is involved in the transport of sperm cells throughout the embryo sac when double fertilization ...
Alejandra G. González-Gutiérrez, Jorge Verdín, Benjamín Rodríguez-Garay   +2 more
doaj   +1 more source

Double fertilization in Helianthus

Acta Societatis Botanicorum Poloniae, 2015
After controlled pollination of Helianthus annuus L. florets, the whole course of fertilization is described and documented on 24 microphotos. The timing of events is evaluated.
J. Telżyńska, H. Telżyński
doaj   +1 more source

Protein-carbohydrate interactions during fertilization [PDF]

, 1998
Interaction between gametes during fertilization is at least in part regulated by carbohydrate moieties of the zona pellucida (ZP) and carbohydrate binding proteins of the sperm surface. This review focuses on the protein-carbohydrate interactions during
Plendl, J., Sinowatz, Fred, Kolle, S.
core   +1 more source