GhCaM7-like, a calcium sensor gene, influences cotton fiber elongation and biomass production
Copyright © 2016 Elsevier Masson SAS. All rights reserved.
| Veröffentlicht in: | Plant physiology and biochemistry : PPB. - 1991. - 109(2016) vom: 05. Dez., Seite 128-136 |
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| 1. Verfasser: | |
| Weitere Verfasser: | , , , , , , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2016
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| Zugriff auf das übergeordnete Werk: | Plant physiology and biochemistry : PPB |
| Schlagworte: | Journal Article Biomass production Calmodulin Fiber elongation GhCaM7-like Arabidopsis Proteins CaM7 protein, Arabidopsis Plant Proteins Calcium SY7Q814VUP |
| Zusammenfassung: | Copyright © 2016 Elsevier Masson SAS. All rights reserved. Calcium signaling regulates many developmental processes in plants. Calmodulin (CaM) is one of the most conserved calcium sensors and has a flexible conformation in eukaryotes. The molecular functions of CaM are unknown in cotton, which is a major source of natural fiber. In this study, a Gossypium hirsutum L.CaM7-like gene was isolated from upland cotton. Bioinformatics analysis indicated that the GhCaM7-like gene was highly conserved as compared with Arabidopsis AtCaM7. The GhCaM7-like gene showed a high expression level in elongating fibers. Expression of β-glucuronidase was observed in trichomes on the stem, leaf and root in transgenic Arabidopsis plants of a PROGhCaM7-like:GUS fusion. Silencing of the GhCaM7-like gene resulted in decreased fiber length, but also caused reduction in stem height, leaf dimensions, seed length and 100-seed weight, in comparison with those of the control. Reduced expression of the GhCaM7-like gene caused decreased Ca2+ influx in cells of the leaf hypodermis and stem apex, and down-regulation of GhIQD1 (IQ67-domain containing protein), GhAnn2 (Annexins) and GhEXP2 (Expansin). These results indicate that the GhCaM7-like gene plays a vital role in calcium signaling pathways, and may regulate cotton fiber elongation and biomass production by affecting Ca2+ signatures and downstream signaling pathways of CaM |
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| Beschreibung: | Date Completed 10.04.2017 Date Revised 16.03.2022 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1873-2690 |
| DOI: | 10.1016/j.plaphy.2016.09.009 |