scholarly journals GORK, a delayed outward rectifier expressed in guard cells of Arabidopsis thaliana , is a K+ -selective, K+ -sensing ion channel

FEBS Letters ◽  
2000 ◽  
Vol 486 (2) ◽  
pp. 93-98 ◽  
Author(s):  
Peter Ache ◽  
Dirk Becker ◽  
Natalya Ivashikina ◽  
Petra Dietrich ◽  
M.Rob G Roelfsema ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Ion Channel ◽  
Guard Cells

scholarly journals The Arabidopsis thaliana MYB60 promoter provides a tool for the spatio-temporal control of gene expression in stomatal guard cells

2013 ◽  
Vol 64 (11) ◽  
pp. 3361-3371 ◽  
Author(s):  
Fabio Rusconi ◽  
Fabio Simeoni ◽  
Priscilla Francia ◽  
Eleonora Cominelli ◽  
Lucio Conti ◽  
...  
Keyword(s):  
Gene Expression ◽  
Arabidopsis Thaliana ◽  
Guard Cells ◽  
Temporal Control ◽  
Control Of Gene Expression ◽  
Stomatal Guard Cells ◽  
Spatio Temporal

PP7, a gene encoding a novel protein Ser/Thr phosphatase, is expressed primarily in a subset of guard cells in Arabidopsis thaliana

1999 ◽  
Vol 106 (2) ◽  
pp. 219-223 ◽  
Author(s):  
Alexandra V. Andreeva ◽  
Anne Kearns ◽  
Chris R. Hawes ◽  
David E. Evans ◽  
Mikhail A. Kutuzov
Keyword(s):  
Arabidopsis Thaliana ◽  
Guard Cells ◽  
Gene Encoding ◽  
Novel Protein

scholarly journals PIEZO ion channel is required for root mechanotransduction in Arabidopsis thaliana

2020 ◽  
Author(s):  
Seyed A. R. Mousavi ◽  
Adrienne E Dubin ◽  
Wei-Zheng Zeng ◽  
Adam M. Coombs ◽  
Khai Do ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Ion Channels ◽  
Ion Channel ◽  
Mammalian Cells ◽  
Plant Root ◽  
Mechanical Strain ◽  
Root Tip ◽  
Root Tips ◽  
Mechanosensitive Ion Channels ◽  
Mechanical Constraints

SummaryPlant roots adapt to the mechanical constraints of the soil to grow and absorb water and nutrients. As in animal species, mechanosensitive ion channels in plants are proposed to transduce external mechanical forces into biological signals. However, the identity of these plant root ion channels remains unknown. Here, we show that Arabidopsis thaliana PIEZO (AtPIEZO) has preserved the function of its animal relatives and acts as an ion channel. We present evidence that plant PIEZO is highly expressed in the columella and lateral root cap cells of the root tip which experience robust mechanical strain during root growth. Deleting PIEZO from the whole plant significantly reduced the ability of its roots to penetrate denser barriers compared to wild type plants. piezo mutant root tips exhibited diminished calcium transients in response to mechanical stimulation, supporting a role of AtPIEZO in root mechanotransduction. Finally, a chimeric PIEZO channel that includes the C-terminal half of AtPIEZO containing the putative pore region was functional and mechanosensitive when expressed in naive mammalian cells. Collectively, our data suggest that Arabidopsis PIEZO plays an important role in root mechanotransduction and establishes PIEZOs as physiologically relevant mechanosensitive ion channels across animal and plant kingdoms.

scholarly journals OSCA/TMEM63 are an evolutionarily conserved family of mechanically activated ion channels

eLife ◽  
2018 ◽  
Vol 7 ◽  
Author(s):  
Swetha E Murthy ◽  
Adrienne E Dubin ◽  
Tess Whitwam ◽  
Sebastian Jojoa-Cruz ◽  
Stuart M Cahalan ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Ion Channels ◽  
Ion Channel ◽  
Molecular Mechanisms ◽  
Deep Insight ◽  
Evolutionarily Conserved ◽  
Bona Fide ◽  
Physical Forces ◽  
Insight Into

Mechanically activated (MA) ion channels convert physical forces into electrical signals, and are essential for eukaryotic physiology. Despite their importance, few bona-fide MA channels have been described in plants and animals. Here, we show that various members of the OSCA and TMEM63 family of proteins from plants, flies, and mammals confer mechanosensitivity to naïve cells. We conclusively demonstrate that OSCA1.2, one of the Arabidopsis thaliana OSCA proteins, is an inherently mechanosensitive, pore-forming ion channel. Our results suggest that OSCA/TMEM63 proteins are the largest family of MA ion channels identified, and are conserved across eukaryotes. Our findings will enable studies to gain deep insight into molecular mechanisms of MA channel gating, and will facilitate a better understanding of mechanosensory processes in vivo across plants and animals.

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