▪ Abstract Pollen tubes and root hairs are highly elongated, cylindrically shaped cells whose
polarized growth permits them to explore the environment for the benefit of the entire plant …

▪ Abstract Many aspects of Angiosperm pollen germination and tube growth are discussed
including mechanisms of dehydration and rehydration, in vitro germination, pollen coat …

In flowering plants, pollen germinates on the stigma and pollen tubes grow through the style
to fertilize the ovules. Enzymatic production of reactive oxygen species (ROS) has been …

Root hairs provide a model system for the study of cell polarity. We examined the possibility
that one or more members of the distinct plant subfamily of RHO monomeric GTPases …

Small GTPases, having masses of 21 to 30 kD, are monomeric guanine nucleotide binding
proteins related to the subunit of heterotrimeric G proteins. All small GTPases belong to a …

Plants contain a novel unique subfamily of Rho GTPases, vital components of cellular
signalling networks. Here we report a general role for some members of this family in …

We have shown that Rop1At, a pollen-specific Rop GTPase that is a member of the Rho
family of small GTP binding proteins, acts as a key molecular switch controlling tip growth in …

Pollen tube cells elongate based on actin-dependent targeted secretion at the tip. Rho
family small GTPases have been implicated in the regulation of related processes in animal …

▪ Abstract Stomatal guard cells are unique as a plant cell model and, because of the depth of
present knowledge on ion transport and its regulation, offer a first look at signal integration in …

Polar cell expansion in differentiating tissues is critical for the development and
morphogenesis of plant organs and is modulated by hormonal and developmental signals …