ZmGluTR1 is involved in chlorophyll biosynthesis and is essential for maize development

Copyright © 2023 Elsevier GmbH. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Journal of plant physiology. - 1979. - 290(2023) vom: 15. Nov., Seite 154115
1. Verfasser: Yang, Wenzhu (VerfasserIn)
Weitere Verfasser: Yuan, Yuhan, Yang, Pengjuan, Li, Suzhen, Ma, Shuai, Liu, Xiaoqing, Zhou, Xiaojin, Chen, Rumei
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Journal of plant physiology
Schlagworte:Journal Article Binding protein Chlorophyll synthesis pathway Glutamyl-tRNA reductase Maize Protein interaction Arabidopsis Proteins Carrier Proteins Chlorophyll 1406-65-1
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520 |a Chlorophyll is the most important carrier of photosynthesis in plants and is therefore vital for plant growth and development. Synthesis of 5-aminolevulinic acid (ALA) is initiated and catalyzed by glutamyl-tRNA reductase (GluTR) and is the rate-limiting step in chlorophyll biosynthesis. GluTR is controlled by several regulating factors. Although many studies have investigated the structure and function of GluTR in plants, the maize (Zea mays L.) GluTR has not yet been reported. Here, we isolated and identified the first loss-of-function mutant of GluTR in plants from a maize mutagenic population. The stop-gain mutation in ZmGluTR1 resulted in leaf etiolation throughout the growing season. The level of intermediates of chlorophyll biosynthesis and photosynthetic pigments decreased markedly and abnormal chloroplast structure was also observed in the mutants. Further analysis revealed that the deletion of carboxyl terminal (C-terminal) led to premature transcription termination and this hindered the interaction with FLUORESCENT (FLU), thereby influencing the stability of mutated ZmGluTR1 and leading to abolish interaction with GluTR-binding protein (GluBP). Moreover, mutations in the catalytic domain or nicotinamide adenine dinucleotide phosphate (NADPH) binding domain were lethal under normal growth conditions. These results indicate that ZmGluTR1 plays a fundamental role in chlorophyll biosynthesis and maize development 
650 4 |a Journal Article 
650 4 |a Binding protein 
650 4 |a Chlorophyll synthesis pathway 
650 4 |a Glutamyl-tRNA reductase 
650 4 |a Maize 
650 4 |a Protein interaction 
650 7 |a Arabidopsis Proteins  |2 NLM 
650 7 |a Carrier Proteins  |2 NLM 
650 7 |a Chlorophyll  |2 NLM 
650 7 |a 1406-65-1  |2 NLM 
700 1 |a Yuan, Yuhan  |e verfasserin  |4 aut 
700 1 |a Yang, Pengjuan  |e verfasserin  |4 aut 
700 1 |a Li, Suzhen  |e verfasserin  |4 aut 
700 1 |a Ma, Shuai  |e verfasserin  |4 aut 
700 1 |a Liu, Xiaoqing  |e verfasserin  |4 aut 
700 1 |a Zhou, Xiaojin  |e verfasserin  |4 aut 
700 1 |a Chen, Rumei  |e verfasserin  |4 aut 
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773 1 8 |g volume:290  |g year:2023  |g day:15  |g month:11  |g pages:154115 
856 4 0 |u http://dx.doi.org/10.1016/j.jplph.2023.154115  |3 Volltext 
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