Signalling by tips

New molecules, including protein kinases, lipids and molecules that have neurotransmitter activities in animals have emerged as important players in tip-growing cells. Transcriptomics analysis reveals that the largest single class of genes expressed in pollen tubes encode signal transducers, reflect...

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Bibliographic Details
Published in:Current opinion in plant biology 2004-10, Vol.7 (5), p.589-598
Main Authors: Feijó, José A, Costa, Sílvia S, Prado, Ana Margarida, Becker, Jörg D, Certal, Ana Catarina
Format: Article
Language:English
Subjects:
actin
Actins - metabolism
Arabidopsis - metabolism
binding proteins
cytoskeleton
Cytoskeleton - metabolism
Flowers - genetics
Flowers - growth & development
Flowers - metabolism
gamma-Aminobutyric Acid - metabolism
Gene Expression
Genes, Plant
ions
Lilium - metabolism
literature reviews
messenger RNA
Models, Biological
Nitric Oxide - metabolism
plant proteins
Plant Roots - genetics
Plant Roots - growth & development
Plant Roots - metabolism
Plants - metabolism
pollen tubes
reactive oxygen species
Reactive Oxygen Species - metabolism
second messengers
Signal Transduction
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Summary:New molecules, including protein kinases, lipids and molecules that have neurotransmitter activities in animals have emerged as important players in tip-growing cells. Transcriptomics analysis reveals that the largest single class of genes expressed in pollen tubes encode signal transducers, reflecting the necessity to decode complex and diverse pathways that are associated with tip growth. Many of these pathways may use common intracellular second messengers, with ions and reactive oxygen species emerging as two major common denominators in many of the processes involved in tip growth. These second messengers might influence the actin cytoskeleton through known interactions with actin-binding proteins. In turn, changes in the dynamic properties of the cytoskeleton would define the basic polarity events needed to shape and modify tip-growing cells.
ISSN:1369-5266
1879-0356
DOI:10.1016/j.pbi.2004.07.014