Genome-wide identification and transcription analysis of soybean carotenoid oxygenase genes during abiotic stress treatments
| Autor: | Tuan-Jie Zhao, Yun-Yan Fei, Chun-E Wang, Rui-Kai Wang, Junyi Gai |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Oxygenase
Adaptation Biological Strigolactone Sodium Chloride Dioxygenases Polyethylene Glycols chemistry.chemical_compound Gene Expression Regulation Plant Stress Physiological Genetics Selection Genetic Molecular Biology Abscisic acid Gene Carotenoid Phylogeny DNA Primers chemistry.chemical_classification Abiotic component Models Genetic biology Abiotic stress organic chemicals Carotenoid oxygenase fungi Temperature Computational Biology food and beverages Bayes Theorem General Medicine chemistry Biochemistry Oxygenases biology.protein Soybeans Genome Plant Abscisic Acid |
| Zdroj: | Molecular Biology Reports. 40:4737-4745 |
| ISSN: | 1573-4978 0301-4851 |
| DOI: | 10.1007/s11033-013-2570-y |
| Popis: | Carotenoid oxygenase is a key enzyme in carotenoid metabolism leading to the synthesis of two phytohormones, abscisic acid (ABA) and strigolactone, as well as norisoprenoids. Few studies have analyzed inter-relationship of the metabolic networks of these three substances. In this present paper, soybean carotenoid oxygenase genes were identified to reveal their phylogenetic relationships, and the transcriptional response of these genes to four abiotic stresses (NaCl, PEG, high and low temperature) and ABA treatment were investigated to characterize their potential roles in plant resistance. Positive selection was found in the branches of carotenoid cleavage dioxygenase (CCD1), CCD8 and NCED (9-cis-epoxycarotenoid oxygenase), indicating an adaptive evolution in these clades. In soybean eight carotenoid oxygenase genes were identified. The transcriptional responses of almost all of them under stress and ABA conditions were significantly altered when assessed by quantitative polymerase chain reaction. Notably, CCD1 and CCD4, previously known as the key genes in norisoprenoids metabolism, showed especially strong responses to the abiotic stresses and ABA treatment. Furthermore, transcription levels of CCD7 and CCD8, key genes for the strigolactone pathway, highly increased during ABA treatment providing further evidence that ABA is involved in regulating strigolactone metabolism. All of the carotenoid oxygenase genes in soybean are involved in plant abiotic stress physiology, and ABA is presumed to be a core regulatory substance. These findings provide some insights into the mechanisms that underlie the regulation of tolerance response to abiotic stresses in soybean. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink