Increased expression of the rice C-type cyclin-dependent protein kinase gene, Orysa;CDKC;1, in response to salt stress

Cyclin dependent protein kinases and stress responses in plants

“…The transcript level of the rice gene Orysa;CDKC1 was increased by ABA treatment, unlike the levels of mitotic CDKB2;1 transcript that were considerably decreased. 104 Furthermore, elevated NaCl also triggered increased expression of Orysa; CDKC1 in cell suspensions, while the activity of Orysa;CDKB2;1 was transiently reduced but recovered. The authors concluded that Orysa;CDKC1 expression might be a primary response to salt stress and could participate in the transcriptional regulation of salt-induced genes for the induction of defense and/or tolerance in a saline environment.…”

“…The authors concluded that Orysa;CDKC1 expression might be a primary response to salt stress and could participate in the transcriptional regulation of salt-induced genes for the induction of defense and/or tolerance in a saline environment. 104 Such a regulatory role is certainly possible as the Arabidopsis CDKC gene has been implicated in the regulation of mRNA processing. CDKC co-localizes with splicing factor SRp34 and their spatial organization was dependent on CDKC kinase activity.…”

Leaf expansion in grasses under salt stress

“…For example, in rice, EL2 encodes a CDK inhibitor induced by cold and drought, and it has been suggested to link cell cycle progression with biotic and abiotic stress responses (Peres et al, 2007). Transcription of a rice gene encoding a cyclin kinase, Orysa;CDKC;1 was induced by salt stress and ABA treatments, but was unaffected by mannitol (Huang et al, 2008). Studies of cell cycle regulation and progression under stress are still scarce; their progress will yield essential information on the control of the transition from proliferative to expansive growth under stress.…”

The poplar ARGOS-LIKE gene promotes leaf initiation and cell expansion, and controls organ size

“…ARGOS-LIKE proteins are members of the OSR group, involved in the regulation of cell division and cell expansion (Feng et al 2011). The possibility of involvement of cell division and cell expansion regulation in abiotic stress responses is discussed in the literature (Huang et al 2008, Choi et al 2011, Han et al 2012. In order to determine whether PtrARGOS-LIKE gene expression was affected by salinity stress, we studied the transcription of PtrARGOS-LIKE in young aspen leaves treated with different concentrations of NaCl for 6 and 24 h. The PtrARGOS-LIKE expression did not increase in response to NaCl.…”