دورية أكاديمية
The build-up of osmotic stress responses within the growing root apex using kinematics and RNA-sequencing.
| العنوان: | The build-up of osmotic stress responses within the growing root apex using kinematics and RNA-sequencing. |
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| المؤلفون: | Royer M; UMR EEF, INRA, Université de Lorraine, 54280 Champenoux, France., Cohen D; UMR EEF, INRA, Université de Lorraine, 54280 Champenoux, France., Aubry N; UMR EEF, INRA, Université de Lorraine, 54280 Champenoux, France., Vendramin V; IGA Technology Services, I-33100 Udine, Italy., Scalabrin S; IGA Technology Services, I-33100 Udine, Italy., Cattonaro F; IGA Technology Services, I-33100 Udine, Italy., Bogeat-Triboulot MB; UMR EEF, INRA, Université de Lorraine, 54280 Champenoux, France triboulo@nancy.inra.fr., Hummel I; UMR EEF, INRA, Université de Lorraine, 54280 Champenoux, France. |
| المصدر: | Journal of experimental botany [J Exp Bot] 2016 Nov; Vol. 67 (21), pp. 5961-5973. Date of Electronic Publication: 2016 Oct 04. |
| نوع المنشور: | Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: | English |
| بيانات الدورية: | Publisher: Oxford University Press Country of Publication: England NLM ID: 9882906 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1460-2431 (Electronic) Linking ISSN: 00220957 NLM ISO Abbreviation: J Exp Bot Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Oxford, UK : Oxford University Press, |
| مواضيع طبية MeSH: | Osmotic Pressure/*physiology , Plant Root Cap/*growth & development, Arabidopsis/growth & development ; Arabidopsis/metabolism ; Arabidopsis/physiology ; Biomechanical Phenomena/physiology ; Gene Expression Regulation, Developmental/genetics ; Gene Expression Regulation, Developmental/physiology ; Gene Expression Regulation, Plant/genetics ; Gene Expression Regulation, Plant/physiology ; Oligonucleotide Array Sequence Analysis ; Plant Root Cap/metabolism ; Plant Root Cap/physiology ; Sequence Analysis, RNA ; Signal Transduction/physiology |
| مستخلص: | Molecular regulation of growth must include spatial and temporal coupling of cell production and cell expansion. The underlying mechanisms, especially under environmental challenge, remain obscure. Spatial patterns of cell processes make the root apex well suited to deciphering stress signaling pathways, and to investigating both processes. Kinematics and RNA-sequencing were used to analyze the immediate growth response of hydroponically grown Populus nigra cuttings submitted to osmotic stress. About 7400 genes and unannotated transcriptionally active regions were differentially expressed between the division and elongation zones. Following the onset of stress, growth decreased sharply, probably due to mechanical effects, before recovering partially. Stress impaired cell expansion over the apex, progressively shortened the elongation zone, and reduced the cell production rate. Changes in gene expression revealed that growth reduction was mediated by a shift in hormone homeostasis. Osmotic stress rapidly elicited auxin, ethylene, and abscisic acid. When growth restabilized, transcriptome remodeling became complex and zone specific, with the deployment of hormone signaling cascades, transcriptional regulators, and stress-responsive genes. Most transcriptional regulations fit growth reduction, but stress also promoted expression of some growth effectors, including aquaporins and expansins Together, osmotic stress interfered with growth by activating regulatory proteins rather than by repressing the machinery of expansive growth. (© The Author 2016. Published by Oxford University Press on behalf of the Society for Experimental Biology.) |
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| فهرسة مساهمة: | Keywords: Division; Populus nigra; elongation; hormonal signaling; osmotic stress; root apical meristem; root growth; transcriptome |
| تواريخ الأحداث: | Date Created: 20161006 Date Completed: 20171113 Latest Revision: 20220330 |
| رمز التحديث: | 20240829 |
| مُعرف محوري في PubMed: | PMC5100013 |
| DOI: | 10.1093/jxb/erw350 |
| PMID: | 27702994 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1460-2431 |
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| DOI: | 10.1093/jxb/erw350 |