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Article Abstract
Light regulates Arabidopsis seed germination through the phyB/PIL5 (PHYTOCHROME INTERACTING FACTOR 3-LIKE 5) transduction pathway, and we have previously shown that the Dof transcription factor DOF AFFECTING GERMINATION1 (DAG1) is a component of this pathway. By means of microarray analysis of dag1 and wild type developing siliques, we identified the EARLY LIGHT-INDUCED PROTEIN1 and 2 (ELIP1 and ELIP2) genes among those deregulated in the loss-of-function dag1 mutant. We analysed seed germination of elip single and double mutants, of elip dag1 double mutants as well as of elip1 elip2 dag1 triple mutant under different environmental conditions. We show that ELIP1 and ELIP2 are involved in opposite ways in the control of this developmental process, in particular under abiotic (light, temperature, salt) stress conditions.
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| http://dx.doi.org/10.1111/j.1469-8137.2010.03637.x | DOI Listing |
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Article Synopsis
- Field-grown plants experience environmental stressors like fluctuating light and temperature, which impact photosynthesis and require stronger protective mechanisms compared to controlled lab settings.
- Using label-free proteomics, the study reveals that Arabidopsis plants in their natural habitat exhibit a mix of adaptations typically seen in both low and high light acclimation strategies from lab settings.
- Notable changes in the thylakoid proteome were observed, including increased levels of certain photosynthetic proteins and stress-related proteins, indicating a unique acclimation response to the dynamic field conditions.
A double SORLIP1 element is required for high light induction of ELIP genes in Arabidopsis thaliana.
Plant Mol Biol
February 2014
Department of Biological Sciences, California State University, Long Beach, 1250 Bellflower Blvd., Long Beach, CA, 90840-9502, USA.
Promoter elements that contribute to high light (HL) induction of the Arabidopsis ELIP1 gene were defined using a transgenic promoter-reporter system. Two adjacent SORLIP1 elements (double SORLIP1, dSL) were found to be essential for HL induction of a GUS reporter gene. The dSL element was also found to be essential for HL induction conferred by the ELIP2 promoter.
View Article and Find Full Text PDFCYCLIN H;1 regulates drought stress responses and blue light-induced stomatal opening by inhibiting reactive oxygen species accumulation in Arabidopsis.
Plant Physiol
June 2013
Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China.
Arabidopsis (Arabidopsis thaliana) CYCLIN-DEPENDENT KINASE Ds (CDKDs) phosphorylate the C-terminal domain of the largest subunit of RNA polymerase II. Arabidopsis CYCLIN H;1 (CYCH;1) interacts with and activates CDKDs; however, the physiological function of CYCH;1 has not been determined. Here, we report that CYCH;1, which is localized to the nucleus, positively regulates blue light-induced stomatal opening.
View Article and Find Full Text PDFInactivation of the ELIP1 and ELIP2 genes affects Arabidopsis seed germination.
New Phytol
June 2011
Dipartimento di Biologia e Biotecnologie, Sapienza Università di Roma, Piazzale Aldo Moro 5, I-00185 Rome, Italy.
Light regulates Arabidopsis seed germination through the phyB/PIL5 (PHYTOCHROME INTERACTING FACTOR 3-LIKE 5) transduction pathway, and we have previously shown that the Dof transcription factor DOF AFFECTING GERMINATION1 (DAG1) is a component of this pathway. By means of microarray analysis of dag1 and wild type developing siliques, we identified the EARLY LIGHT-INDUCED PROTEIN1 and 2 (ELIP1 and ELIP2) genes among those deregulated in the loss-of-function dag1 mutant. We analysed seed germination of elip single and double mutants, of elip dag1 double mutants as well as of elip1 elip2 dag1 triple mutant under different environmental conditions.
View Article and Find Full Text PDF[Effect of melafen on expression of Elip1 and Elip2 genes encoding chloroplast light-induced stress proteins in barley].
Prikl Biokhim Mikrobiol
February 2009
The effect of melafen, a plant growth regulator of a new generation, on the growth, pigment composition, and expression of nuclear genes Elip1 and Elip2 encoding chloroplast light-stress proteins in barley (Hordeum vulgare L) seedlings was studied. It is shown that the height of seedlings treated with melafen at concentrations of 0.5 x 10(-10) and 0.
View Article and Find Full Text PDF