College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China.
Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China.
Int J Mol Sci. 2024 Mar 10;25(6):3180. doi: 10.3390/ijms25063180.
Leaf angle (LA) is one of the core agronomic traits of maize, which controls maize yield by affecting planting density. Previous studies have shown that the gene is closely related to the formation of maize LA, but its specific mechanism has not been fully studied. In this study, phenotype investigation and transcriptomic sequencing were combined to explore the mechanism of LA changes in wild type maize B73 and mutant under exogenous auxin (IAA) and abscisic acid (ABA) treatment. The results showed that the effect of exogenous phytohormones had a greater impact on the LA of compared to B73. Transcriptome sequencing showed that genes involved in IAA, gibberellins (GAs) and brassinosteroids (BRs) showed different differential expression patterns in and B73. This study provides new insights into the mechanism of involved in the formation of maize LA, and provides a theoretical basis for breeding maize varieties with suitable LA.
叶角（LA）是玉米的核心农艺性状之一，通过影响种植密度来控制玉米产量。先前的研究表明，该基因与玉米 LA 的形成密切相关，但具体机制尚未完全研究清楚。在这项研究中，我们结合表型调查和转录组测序来探索外源生长素（IAA）和脱落酸（ABA）处理下野生型玉米 B73 和突变体 的 LA 变化的机制。结果表明，外源植物激素对 的 LA 的影响比对 B73 的更大。转录组测序表明，参与 IAA、赤霉素（GAs）和油菜素内酯（BRs）的基因在 和 B73 中表现出不同的差异表达模式。这项研究为玉米 LA 形成过程中涉及的 基因的作用机制提供了新的见解，并为培育具有适宜 LA 的玉米品种提供了理论基础。
