ZmNAC17 Regulates Mesocotyl Elongation by Mediating Auxin and ROS Biosynthetic Pathways in Maize.
Int J Mol Sci
; 25(9)2024 Apr 23.
Article
em En
| MEDLINE
| ID: mdl-38731804
ABSTRACT
The mesocotyl is of great significance in seedling emergence and in responding to biotic and abiotic stress in maize. The NAM, ATAF, and CUC2 (NAC) transcription factor family plays an important role in maize growth and development; however, its function in the elongation of the maize mesocotyl is still unclear. In this study, we found that the mesocotyl length in zmnac17 loss-of-function mutants was lower than that in the B73 wild type. By using transcriptomic sequencing technology, we identified 444 differentially expressed genes (DEGs) between zmnac17-1 and B73, which were mainly enriched in the "tryptophan metabolism" and "antioxidant activity" pathways. Compared with the control, the zmnac17-1 mutants exhibited a decrease in the content of indole acetic acid (IAA) and an increase in the content of reactive oxygen species (ROS). Our results provide preliminary evidence that ZmNAC17 regulates the elongation of the maize mesocotyl.
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MEDLINE
Assunto principal:
Proteínas de Plantas
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Espécies Reativas de Oxigênio
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Regulação da Expressão Gênica de Plantas
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Zea mays
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Ácidos Indolacéticos
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article