生物
生长素
胚胎
转录组
胚珠
园艺
基因
基因表达
植物
生物化学
细胞生物学
作者
Haoyue Zhang,Jiuxia Zhao,Jingling Zhang,Shuhan Wen,Xie Shi-qing,Shengchao Yang,Junwen Chen,Yanli Zhou,Guangqiang Long
出处
期刊:Gene
[Elsevier]
日期:2024-01-01
卷期号:893: 147930-147930
标识
DOI:10.1016/j.gene.2023.147930
摘要
Marsdenia tenacissima is a medicinal plant characterized by many flowers, few fruits, and a low fruit-setting rate. Exogenous auxins can improve the fruit-setting rate of plants; however, their impacts on M. tenacissima and regulatory mechanisms remain unclear. In this study, we conducted a field experiment to determine the fruit-setting rate, seed-setting rate, fruit size, and changes in transcriptional expression of related genes by spraying 10 and 50 mg·L-1 of 3-indoleacetic acid (IAA). The control plants were sprayed with distilled water. Our results indicated that the fruit-setting rate was 0.15 when treated with 10 mg·L-1 of IAA, which was 2.76-fold higher than that of the control. Compared with that of the control, the number of differentially expressed genes (DEGs) regulated by 10 mg·L-1 of IAA was 28.6-fold higher than that regulated by 50 mg·L-1 of IAA. These DEGs were closely related to hormone metabolism and fruit development. By transcriptome analysis, spraying 10 mg·L-1 of IAA increased the expressions of STP6, MYB17, and LAX3 and reduced those of CXE18, ILR1-like 3, and SAUR50; this possibly affected the ovule, embryo, and fruit development, thereby elevating the fruit-setting rate of M. tenacissima. Our results indicated that low IAA concentration increased the fruit-setting rate of M. tenacissima, providing theoretical and practical support for promoting the seed yield of M. tenacissima.
科研通智能强力驱动
Strongly Powered by AbleSci AI