Results 21 to 30 of about 76,993 (366)

Durotropic Growth of Pollen Tubes [PDF]

open access: yesPlant 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

The pollen receptor kinase LePRK2 mediates growth-promoting signals and positively regulates pollen germination and tube growth [PDF]

open access: yes, 2008
In flowering plants, the process of pollen germination and tube growth is required for successful fertilization. A pollen receptor kinase from tomato (Solanum lycopersicum), LePRK2, has been implicated in signaling during pollen germination and tube ...
Gui, Cai Ping   +6 more
core   +4 more sources

Effect of boron toxicity on pollen tube cell wall architecture and the relationship of cell wall components of Castanea mollissima Blume

open access: yesFrontiers 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

Kanamycin resistance during in vitro development of pollen from transgenic tomato plants [PDF]

open access: yes, 1987
Effects of kanamycin on pollen germination and tube growth of pollen from non-transformed plants and from transgenic tomato plants containing a chimaeric kanamycin resistance gene were determined. Germination of pollen was not affected by the addition of
AP Czernilofsky   +19 more
core   +2 more sources

Identification and functional analysis of arabinogalactan protein expressed in pear pollen tubes

open access: yesJournal of Integrative Agriculture, 2023
Arabinogalactan proteins (AGPs) are widely distributed in the plant kingdom and play a vital role during the process of plant sexual reproduction. In this study, we performed a comprehensive identification of the PbrAGPs expressed in pear pollen and ...
Hui-jun JIAO   +6 more
doaj  

The Arabidopsis mutant feronia disrupts the female gametophytic control of pollen tube reception [PDF]

open access: yes, 2003
Reproduction in angiosperms depends on communication processes of the male gametophyte (pollen) with the female floral organs (pistil, transmitting tissue) and the female gametophyte (embryo sac).
Federer, M.   +3 more
core   +2 more sources

Regularized Stokeslet rings - an efficient method for axisymmetric Stokes flow, with application to the growing pollen tube [PDF]

open access: yesPhys. Rev. Fluids 4, 063102 (2019), 2019
The method of regularized Stokeslets, based on the divergence-free exact solution to the equations of highly viscous flow due to a spatially-smoothed concentrated force, is widely employed in biological fluid mechanics. Many problems of interest are axisymmetric, motivating the study of the azimuthally-integrated form of the Stokeslet which physically ...
arxiv   +1 more source

WD40-domain protein GORI is an integrative scaffold that is required for pollen tube growth in rice

open access: yesPlant Signaling & Behavior, 2023
The pollen tube plays a critical role in angiosperm plants by delivering sperm gametes for double fertilization. Although the molecular mechanisms underlying pollen tube germination and growth are crucial to crop plants, they are poorly understood. Here,
Yu-Jin Kim, Ki-Hong Jung
doaj   +1 more source

The juxtamembrane and carboxy-terminal domains of Arabidopsis PRK2 are critical for ROP-induced growth in pollen tubes. [PDF]

open access: yes, 2013
Polarized growth of pollen tubes is a critical step for successful reproduction in angiosperms and is controlled by ROP GTPases. Spatiotemporal activation of ROP (Rho GTPases of plants) necessitates a complex and sophisticated regulatory system, in which
Ge, Fu-Rong   +6 more
core   +1 more source

Pollen-specific pectin methylesterase involved in pollen tube growth [PDF]

open access: yes, 2006
Pollen tube elongation in the pistil is a crucial step in the sexual reproduction of plants. Because the wall of the pollen tube tip is composed of a single layer of pectin and, unlike most other plant cell walls, does not contain cellulose or callose ...
Chen, Min-Huei   +3 more
core   +1 more source

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