Pollen is the male gametophyte of higher plants. Its major function is to deliver sperm cells to
the ovule to ensure successful fertilization. During this process, many interactions occur …

Growing pollen tubes require calcium to maintain a tip-focused cytosolic gradient and as a
constituent of the constantly expanding cell wall. Advances in cell and molecular biology as …

The pollen tube germinates from pollen and, during its migration, it perceives and responds
to guidance cues from maternal tissue and from the female gametophyte. The putative …

Calnexin (CNX) is a highly conserved endoplasmic reticulum (ER) chaperone protein. Both
calnexin and the homologous ER-lumenal protein, calreticulin, bind calcium ions and …

Main conclusion Calreticulin is involved in stabilization of the tip-focused Ca 2+ gradient and
the actin cytoskeleton arrangement and function that is required for several key processes …

Background Pollen development in the anther in angiosperms depends on complicated
cellular interactions associated with the expression of gametophytic and sporophytic genes …

Despite the high number of studies on the fine structure of brown algal cells, only limited
information is available on the intercelluar transportation of molecules via plasmodesmata in …

One of the first cellular locations of the calreticulin (CRT) chaperone in eukaryotic cells, apart
from its obvious localization in the endoplasmic reticulum (ER), was the cell nucleus (Opas …

Abstract Calcium (Ca 2+) plays essential roles in plant sexual reproduction, but the sites and
the mechanism of Ca 2+ mobile storage during pollen–pistil interactions have not been fully …

Pollen tube growth depends on several complex processes, including exo/endocytosis, cell
wall biogenesis, intracellular transport, and cell signaling. Our previous results provided …