Actin microfilaments are involved in the regulation of HVA1 transcript accumulation in drought-treated barley leaves

Drought is one of the stresses that limit the yield of barley. Despite extensive studies focused on the issue, the molecular mechanism of the response to drought is still not fully understood. In our previous study, we proposed drought-induced signal perception controlled by actin filaments (AFs). T...

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Bibliographic Details
Published in:Journal of plant physiology 2016-04, Vol.193, p.22-25
Main Authors: Śniegowska-Świerk, Katarzyna, Dubas, Ewa, Rapacz, Marcin
Format: Article
Language:English
Subjects:
Actin cytoskeleton
Actin Cytoskeleton - drug effects
Actin Cytoskeleton - genetics
Actin Cytoskeleton - metabolism
Bridged Bicyclo Compounds, Heterocyclic - pharmacology
Dehydrin
Drought
Droughts
Gene expression
Gene Expression Regulation, Plant - drug effects
Hordeum - drug effects
Hordeum - genetics
Hordeum - physiology
Latrunculin B
Plant Leaves - genetics
Plant Leaves - physiology
Plant Proteins - genetics
Plant Proteins - metabolism
Plants, Genetically Modified
Signal Transduction
Thiazolidines - pharmacology
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Summary:Drought is one of the stresses that limit the yield of barley. Despite extensive studies focused on the issue, the molecular mechanism of the response to drought is still not fully understood. In our previous study, we proposed drought-induced signal perception controlled by actin filaments (AFs). To test this hypothesis, we used a chemical inhibitor of AF polarization—latrunculin B. In drought-treated barley leaves, latrunculin B induced AF depolymerization and altered gene expression (mainly those controlling AF formation), notably inhibiting the expression of HVA1, a dehydrin encoding gene whose function in drought tolerance has been widely studied. These results suggest that AFs might be involved in water-deficit signal perception in plant cells.
ISSN:0176-1617
1618-1328
DOI:10.1016/j.jplph.2016.02.006