摘要
The yield of castor is influenced by the type of inflorescence and the proportion of female flowers.However,there are few studies on the genetic mechanism involved in the development and differentiation of castor inflorescences.In this study,we performed transcriptomic analyses of three different phenotypes of inflorescences at the five-leaf stage.In comparison to the MI(complete pistil without willow leaves),290 and 89 differentially expressed genes(DEGs)were found in the SFI(complete pistil with willow leaves)and the BI(monoecious inflorescence),respectively.Among the DEGs,104 and 88 were upregulated in the SFI and BI,respectively,compared to the MI.In addition,186 DEGs and 1 DEG were downregulated in the SFI and BI compared to the MI.Moreover,we conducted GO and KEGG enrichment analyses of the DEGs.In comparison to the MI,the SFI and BI exhibited the enrichment of functional branches in DEGs,specifically in pollen wall assembly,pollen development,and cellular component assembly involved in morphogenesis.In our study,RADL5 showed low expression levels between SFI-vs.-MI types.In addition,we found that the expression of NAC in the SFI differed from that in MI and BI,and some genes related to hormonal signaling changed their expression levels during inflorescence differentiation.These results reveal the genetic mechanism of sex genotypes in castor,which will not only guide researchers in the breeding of castor but also provide a reference for genetic research on other flowering plants.
基金
the following agencies:the Natural Science Foundation of Jilin Province(YDZJ202201ZYTS453)
the Scientific Research Project of the Jilin Provincial Department of Education(JJKH20220010KJ)
the Program for Innovative Research Team of Baicheng Normal University,the National Natural Science Foundation of China(31860071)
the Inner Mongolia Autonomous Region Natural Science Foundation Project(2021MS03008)
the Inner Mongolia Autonomous Region Grassland Talent Innovation Team(2022)
the 2022 Basic Scientific Research Business Cost Project of Universities Directly under the Autonomous Region(237)
the Open Fund Project of Inner Mongolia Castor Industry Collaborative Innovation Center(MDK2021011,MDK2022014,MDK2022008,MDK2021008,MDK2022009,MDK2023003)
Fundamental Research Funds for Universities Directly under the Autonomous Region in 2023 of Inner Mongolia University for Nationalities(225,227,243,244)
New Agricultural Science Research and Reform Practice Project of the Ministry of Education(2020114)。
