Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, School of Food Science and Engineering, Engineering Research Center of Starch and Vegetable Protein Processing Ministry of Education, South China University of Technology, Guangzhou 510640, China.
Southern Golden Pomelo Research Institute of Meizhou, Meizhou 514743, China.
Int J Mol Sci. 2022 May 18;23(10):5665. doi: 10.3390/ijms23105665.
As widely planted fruits with high nutritional and medical values, pomelos are managed systematically to achieve the largest economic benefits. But the annual shedding of young pomelos, which could be applied as feedstocks for essential oil extraction with their abundant volatiles, leads to a waste of source. The present study selected two commonly planted pomelo ( (Burm.) Merr.) varieties in Southern China, to investigate the volatile profiles during young pomelo fruits development. Combing transcriptomic analysis, this study aimed at identifying the prominent volatile components in young pomelo fruits in order to preferably extract profitable volatiles, as well, increasing the knowledge concerning regulatory roles of transcription factors (TFs) on volatiles accumulation in young pomelos. Totally 29 volatiles were identified, including 14 monoterpenoids and 13 sesquiterpenoids. Diprene was the principal component with the highest amount. Volatiles were generally decreased during fruits development but preferable stages were figured out for volatile collections. 12 and 17 TFs were related to developing time while and were highly correlated to monoterpenoids. These findings put forward the comprehensive usages of young pomelos and enriched the regulatory roles of TFs on both fruit development and volatiles metabolism.
柚子作为一种具有高营养价值和药用价值的广泛种植水果，被系统地管理，以实现最大的经济效益。但是，每年都会有大量的幼柚子脱落，这些柚子可以作为提取挥发油的原料，而挥发油富含挥发性物质，这导致了资源的浪费。本研究选择了中国南方两种常见的柚子（（Burm.）Merr.）品种，研究了幼果发育过程中挥发性成分的变化。本研究结合转录组分析，旨在确定幼柚子中主要的挥发性成分，以便更好地提取有价值的挥发性成分，同时增加对转录因子（TFs）在幼柚子挥发物积累中的调控作用的认识。共鉴定出 29 种挥发性成分，包括 14 种单萜和 13 种倍半萜。二戊烯是含量最高的主要成分。挥发性成分在果实发育过程中普遍减少，但也确定了挥发性成分收集的最佳阶段。12 个和 17 个 TF 与发育时间有关，而 与单萜关系密切。这些发现提出了幼柚子的综合利用，并丰富了 TFs 在果实发育和挥发物代谢中的调控作用。
