Year: 2012
Type: article
Abstract: In this study, we isolated a homozygous T-DNA insertion mutant line, ckl2, of the casein kinase 1-Like 2 (CKL2) gene in Arabidopsis thaliana. Through analysis of the germination ratio, root length, water loss rate, and stomatal aperture, we found that the ckl2 mutants showed an abscisic acid (ABA)-hyposensitive phenotype in all tests. CKL2 was also found to mediate the expression of ABA-upregulated genes in seeds and seedlings. CKL2 was expressed in all tissues, especially in the leaf and leaf stalk, and could be induced by ABA. A proline accumulation experiment showed that the Pro content in ckl2 was lower than that of the wild type. The above results demonstrate that CKL2 was required for ABA-regulated seed germination, root growth, and gene expression, suggesting that CKL2 positively mediates ABA signaling in Arabidopsis.
Source: Journal of Plant Interactions
Authors: Yi Cui, Jiazhuo Ye, Xinhong Guo, Hongping Chang, Congying Yuan, Yu Wang, Shuai Hu, Xuanming Liu, Xiushan Li
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: bronze
OpenAlex ID: W2088853972