Comprehensive transcriptomic profiling reveals complex molecular mechanisms in the regulation of style-length dimorphism in Guettarda speciosa (Rubiaceae), a species with anomalous distyly
文献类型：期刊论文
| 作者 | Luo,Zhonglai; Zhao,Zhongtao; Xu,Yuanqing; Shi,Miaomiao; Tu,Tieyao; Pei,Nancai; Zhang,Dianxiang |
| 刊名 | FRONTIERS IN PLANT SCIENCE
 |
| 出版日期 | 2023 |
| 卷号 | 14页码:1116078 |
| 关键词 | anomalous distyly brassinosteroid signaling Guettarda speciosa heterostyly molecular regulation genetic convergence PRIMULA-VULGARIS GENE-EXPRESSION ANNOTATION PATHWAY IDENTIFICATION AUXIN EVOLUTION PROTEIN GROWTH BKI1 |
| DOI | 10.3389/fpls.2023.1116078 |
| 英文摘要 | BackgroundThe evolution of heterostyly, a genetically controlled floral polymorphism, has been a hotspot of research since the 19th century. In recent years, studies on the molecular mechanism of distyly (the most common form of heterostyly) revealed an evolutionary convergence in genes for brassinosteroids (BR) degradation in different angiosperm groups. This floral polymorphism often exhibits considerable variability that some taxa have significant stylar dimorphism, but anther height differs less. This phenomenon has been termed anomalous distyly, which is usually regarded as a transitional stage in evolution. Compared to typical distyly, the genetic regulation of anomalous distyly is almost unknown, leaving a big gap in our understanding of this special floral adaptation strategy. MethodsHere we performed the first molecular-level study focusing on this floral polymorphism in Guettarda speciosa (Rubiaceae), a tropical tree with anomalous distyly. Comprehensive transcriptomic profiling was conducted to examine which genes and metabolic pathways were involved in the genetic control of style dimorphism and if they exhibit similar convergence with typical distylous species. ResultsBrassinosteroid homeostasis and plant hormone signal transduction was the most significantly enriched GO term and KEGG pathway in the comparisons between L- and S-morph styles, respectively. Interestingly, homologs of all the reported S-locus genes either showed very similar expressions between L- and S-morph styles or no hits were found in G. speciosa. BKI1, a negative regulator of brassinosteroid signaling directly repressing BRI1 signal transduction, was identified as a potential gene regulating style length, which significantly up-regulated in the styles of S-morph. DiscussionThese findings supported the hypothesis that style length in G. speciosa was regulated through a BR-related signaling network in which BKI1 may be one key gene. Our data suggested, in species with anomalous distyly, style length was regulated by gene differential expressions, instead of the hemizygous S-locus genes in typical distylous flowers such as Primula and Gelsemium, representing an intermediate stage in the evolution of distyly. Genome-level analysis and functional studies in more species with typical and anomalous distyly would further decipher this most complex marriage arrangement in angiosperms and improve our knowledge of floral evolution. |
| 学科主题 | Plant Sciences |
| WOS记录号 | WOS:000959028200001 |
| 源URL | [http://ir.kib.ac.cn/handle/151853/74972]  |
| 专题 | 中国科学院昆明植物研究所 |
| 推荐引用方式 GB/T 7714 | Luo,Zhonglai,Zhao,Zhongtao,Xu,Yuanqing,et al. Comprehensive transcriptomic profiling reveals complex molecular mechanisms in the regulation of style-length dimorphism in Guettarda speciosa (Rubiaceae), a species with anomalous distyly[J]. FRONTIERS IN PLANT SCIENCE,2023,14:1116078. |
| APA | Luo,Zhonglai.,Zhao,Zhongtao.,Xu,Yuanqing.,Shi,Miaomiao.,Tu,Tieyao.,...&Zhang,Dianxiang.(2023).Comprehensive transcriptomic profiling reveals complex molecular mechanisms in the regulation of style-length dimorphism in Guettarda speciosa (Rubiaceae), a species with anomalous distyly.FRONTIERS IN PLANT SCIENCE,14,1116078. |
| MLA | Luo,Zhonglai,et al."Comprehensive transcriptomic profiling reveals complex molecular mechanisms in the regulation of style-length dimorphism in Guettarda speciosa (Rubiaceae), a species with anomalous distyly".FRONTIERS IN PLANT SCIENCE 14(2023):1116078. |
入库方式： OAI收割
来源：昆明植物研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。