Results 51 to 60 of about 1,221,498 (351)

Pollen tube integrity regulation in flowering plants: insights from molecular assemblies on the pollen tube surface.

open access: yesNew Phytologist, 2019
Contents Summary 687 I. Introduction 687 II. Pollen tube membrane-localized receptors coordinate cell integrity and sperm release 689 III. RALF peptides mediate autocrine and paracrine signaling 689 IV. ROS and ion channel signaling mediate intracellular
Zengxiang Ge, A. Cheung, Li-jia Qu
semanticscholar   +1 more source

Pollen tube contents from failed fertilization contribute to seed coat initiation in Arabidopsis [version 1; peer review: 2 approved, 1 approved with reservations]

open access: yesF1000Research, 2019
Plant seeds are essential for human beings, constituting 70% of carbohydrate resources worldwide; examples include rice, wheat, and corn. In angiosperms, fertilization of the egg by a sperm cell is required for seed formation; therefore, fertilization ...
Xiaoyan Liu   +2 more
doaj   +1 more source

Transport Logistics in Pollen Tubes [PDF]

open access: yesMolecular 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

A Sugar Transporter Takes Up both Hexose and Sucrose for Sorbitol-Modulated In Vitro Pollen Tube Growth in Apple[OPEN]

open access: yesThe Plant Cell, 2019
A sugar transporter protein, STP13a, mediates the uptake of both hexose and Suc for in vitro pollen tube growth in apple, with its expression regulated by sorbitol via a MYB transcription factor.
Chunlong Li   +5 more
semanticscholar   +1 more source

Pollen tube contents from failed fertilization contribute to seed coat initiation in Arabidopsis [version 2; peer review: 2 approved, 1 approved with reservations]

open access: yesF1000Research, 2019
Plant seeds are essential for human beings, constituting 70% of carbohydrate resources worldwide; examples include rice, wheat, and corn. In angiosperms, fertilization of the egg by a sperm cell is required for seed formation; therefore, fertilization ...
Xiaoyan Liu   +2 more
doaj   +1 more source

Research Progress on Calcium Ion in Gametophytic Self-Incompatibility

open access: yesJournal of Horticultural Research, 2022
Calcium ions are involved in plant self-incompatibility response as important signaling substances in cells. In the sporophytic self-incompatibility response, Ca2+ enters the stigma papilla cells and plays a key role in inhibiting incompatible pollen ...
Guo Yanling, Qu Haiyong
doaj   +1 more source

Effects of temperature on pollen viability and in vivo pollen tube growth in Citrus sinensis

open access: yesJournal of Applied Botany and Food Quality, 2022
Temperature is the major factor in global warming and strongly influences the success of plant sexual reproduction. Therefore, there isan urgent need to assess the vulnerability of species for breeding and planning effective actions.
Senay Karabiyik
doaj   +1 more source

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

The LI-rings in pollen tubes

open access: yesActa Societatis Botanicorum Poloniae, 2014
Monoclonal antibodies, which recognize the specific epitopes for pectins and arabinogalactan proteins, in connection with confocal laser scanning microscopy demonstrated the presence of a ring-like structure in the cell wall of pollen tubes of flowering plants.
Zhang, H. Q., Linskens, H. F.
openaire   +5 more sources

RALF4/19 peptides interact with LRX proteins to control pollen tube growth in Arabidopsis

open access: yesScience, 2017
Timing a switch in tissue integrity In plants, sperm cells travel through the pollen tube as it grows toward the ovule. Successful fertilization depends on the pollen tube rupturing to release the sperm cells (see the Perspective by Stegmann and Zipfel).
M. Mecchia   +10 more
semanticscholar   +1 more source

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