Liang Qingzhi, Song Kanghua, Lu Mingsheng, Dai Tao, Yang Jie, Wan Jiaxin, Li Li, Chen Jingjing, Zhan Rulin, Wang Songbiao
Key Laboratory of Tropical Fruit Biology, Ministry of Agriculture, South Subtropical Crops Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, China.
College of Tropical Crops, Yunnan Agricultural University, Puer, China.
Front Plant Sci. 2022 Jul 14;13:933923. doi: 10.3389/fpls.2022.933923. eCollection 2022.
Mango ( L.) is famous for its sweet flavor and aroma. China is one of the major mango-producing countries. Mango is known for variations in flowering intensity that impacts fruit yield and farmers' profitability. In the present study, transcriptome and metabolome analyses of three cultivars with different flowering intensities were performed to preliminarily elucidate their regulatory mechanisms. The transcriptome profiling identified 36,242 genes. The major observation was the differential expression patterns of 334 flowering-related genes among the three mango varieties. The metabolome profiling detected 1,023 metabolites that were grouped into 11 compound classes. Our results show that the interplay of the FLOWERING LOCUS T and CONSTANS together with their upstream/downstream regulators/repressors modulate flowering robustness. We found that both gibberellins and auxins are associated with the flowering intensities of studied mango varieties. Finally, we discuss the roles of sugar biosynthesis and ambient temperature pathways in mango flowering. Overall, this study presents multiple pathways that can be manipulated in mango trees regarding flowering robustness.
芒果（杧果属）以其甜美的味道和香气而闻名。中国是主要的芒果生产国之一。芒果因开花强度的差异而闻名，这种差异会影响果实产量和农民的收益。在本研究中，对三个开花强度不同的品种进行了转录组和代谢组分析，以初步阐明其调控机制。转录组分析鉴定出36242个基因。主要观察结果是三个芒果品种中334个与开花相关基因的差异表达模式。代谢组分析检测到1023种代谢物，这些代谢物被分为11个化合物类别。我们的结果表明，成花素和CONSTANS与其上游/下游调节因子/抑制因子的相互作用调节开花强度。我们发现赤霉素和生长素都与所研究芒果品种的开花强度有关。最后，我们讨论了糖生物合成和环境温度途径在芒果开花中的作用。总体而言，本研究提出了在芒果树开花强度方面可以调控的多种途径。
