Huang Jianfeng, Qin Yuling, Xie Ziliang, Wang Peng, Zhao Zhichang, Huang Xiaolou, Chen Qianfu, Huang Zhanwei, Chen Yeyuan, Gao Aiping
Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, 571101, Hainan, China; Key Laboratory of Tropical Crops Germplasm Resources Genetic Improvement and Innovation of Hainan Province, Danzhou 571737, Hainan, China.
Wenzhou Vocational College of Science and Technology, 325006 Zhejiang, China.
Genomics. 2023 Sep;115(5):110675. doi: 10.1016/j.ygeno.2023.110675. Epub 2023 Jun 29.
Mango (Mangifera indica L.) is a widely appreciated tropical fruit for its rich color and nutrition. However, knowledge on the molecular basis of color variation is limited. Here, we studied HY3 (yellowish-white pulp) and YX4 (yellow pulp), reaped with 24 h gap from the standard harvesting time. The carotenoids and total flavonoids increased with the advance of harvest time (YX4 > HY34). Transcriptome sequencing showed that higher expressions of the core carotenoid biosynthesis genes and flavonoid biosynthesis genes are correlated to their respective contents. The endogenous indole-3-acetic acid and jasmonic acid contents decreased but abscisic acid and ethylene contents increased with an increase in harvesting time (YX4 > HY34). Similar trends were observed for the corresponding genes. Our results indicate that the color differences are related to carotenoid and flavonoid contents, which in turn are influenced by phytohormone accumulation and signaling.
芒果（Mangifera indica L.）是一种因其丰富的色泽和营养而广受赞誉的热带水果。然而，关于其颜色变化分子基础的知识有限。在此，我们研究了HY3（黄白色果肉）和YX4（黄色果肉），它们在距标准收获时间24小时的间隔收获。类胡萝卜素和总黄酮含量随着收获时间的推进而增加（YX4 > HY34）。转录组测序表明，核心类胡萝卜素生物合成基因和黄酮类生物合成基因的较高表达与其各自的含量相关。随着收获时间的增加，内源吲哚-3-乙酸和茉莉酸含量降低，但脱落酸和乙烯含量增加（YX4 > HY34）。相应基因也观察到类似趋势。我们的结果表明，颜色差异与类胡萝卜素和黄酮类含量有关，而这又受到植物激素积累和信号传导的影响。
