Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\28232585
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Plant+Physiol
2017 ; 174
(2
): 732-747
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Evolutionary Conservation of ABA Signaling for Stomatal Closure
#MMPMID28232585
Cai S
; Chen G
; Wang Y
; Huang Y
; Marchant DB
; Wang Y
; Yang Q
; Dai F
; Hills A
; Franks PJ
; Nevo E
; Soltis DE
; Soltis PS
; Sessa E
; Wolf PG
; Xue D
; Zhang G
; Pogson BJ
; Blatt MR
; Chen ZH
Plant Physiol
2017[Jun]; 174
(2
): 732-747
PMID28232585
show ga
Abscisic acid (ABA)-driven stomatal regulation reportedly evolved after the
divergence of ferns, during the early evolution of seed plants approximately 360
million years ago. This hypothesis is based on the observation that the stomata
of certain fern species are unresponsive to ABA, but exhibit passive hydraulic
control. However, ABA-induced stomatal closure was detected in some mosses and
lycophytes. Here, we observed that a number of ABA signaling and membrane
transporter protein families diversified over the evolutionary history of land
plants. The aquatic ferns Azolla filiculoides and Salvinia cucullata have
representatives of 23 families of proteins orthologous to those of Arabidopsis
(Arabidopsis thaliana) and all other land plant species studied. Phylogenetic
analysis of the key ABA signaling proteins indicates an evolutionarily conserved
stomatal response to ABA. Moreover, comparative transcriptomic analysis has
identified a suite of ABA-responsive genes that differentially expressed in a
terrestrial fern species, Polystichum proliferum These genes encode proteins
associated with ABA biosynthesis, transport, reception, transcription, signaling,
and ion and sugar transport, which fit the general ABA signaling pathway
constructed from Arabidopsis and Hordeum vulgare The retention of these key
ABA-responsive genes could have had a profound effect on the adaptation of ferns
to dry conditions. Furthermore, stomatal assays have shown the primary evidence
for ABA-induced closure of stomata in two terrestrial fern species Pproliferum
and Nephrolepis exaltata In summary, we report, to our knowledge, new molecular
and physiological evidence for the presence of active stomatal control in ferns.
|*Biological Evolution
[MESH]
|Abscisic Acid/*metabolism
[MESH]
|Arabidopsis Proteins/genetics/metabolism
[MESH]
|Ferns/genetics/*metabolism
[MESH]
|Gene Expression Profiling
[MESH]
|Gene Expression Regulation, Plant
[MESH]
|Membrane Transport Proteins/genetics/metabolism
[MESH]
free
free
free
