Functional characterization of chlorophyll b reductase NON-YELLOW COLORING 1 in Medicago truncatula
Copyright © 2024 Elsevier B.V. All rights reserved.
| Veröffentlicht in: | Plant science : an international journal of experimental plant biology. - 1985. - 350(2024) vom: 24. Okt., Seite 112307 |
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| 1. Verfasser: | |
| Weitere Verfasser: | , , , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2024
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| Zugriff auf das übergeordnete Werk: | Plant science : an international journal of experimental plant biology |
| Schlagworte: | Journal Article Alternative splicing Chlorophyll b reductase Leaf senescence Medicago truncatula NYC1 Seed maturation Stay-green |
| Zusammenfassung: | Copyright © 2024 Elsevier B.V. All rights reserved. Chlorophyll degradation is a characteristic process of leaf senescence. Two mutant lines, which showed green leaves and seeds during senescence, were identified by screening a Tnt-1 retrotransposon-tagged population of Medicago truncatula. Genetic and molecular analyses indicated that the mutated gene is NON-YELLOW COLORING 1 (MtNYC1) in M. truncatula. MtNYC1 encoded a chlorophyll b reductase, characterized by three transmembrane domains and a catalytic site (Y***K). Our investigation further identified three splicing variants of MtNYC1, encoding a full-length protein (MtNYC1A) and two truncated proteins (MtNYC1B, MtNYC1C). Genetic evidence indicated that the catalytic site and the third transmembrane domain were critical domains for chlorophyll b reductase. The coordinated action of three splicing variants plays a pivotal role in the degradation of chlorophyll during the senescence of leaves. This discovery provides precise target sites for the development of stay-green legume cultivars |
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| Beschreibung: | Date Revised 01.11.2024 published: Print-Electronic Citation Status Publisher |
| ISSN: | 1873-2259 |
| DOI: | 10.1016/j.plantsci.2024.112307 |