Objective:Goji(fruits of Lycium spp.)is commonly consumed as food and medicine.The increasing market demand for goji has led to its wide cultivation and broad breeding,which might cause loss of genetic diversity.This ...Objective:Goji(fruits of Lycium spp.)is commonly consumed as food and medicine.The increasing market demand for goji has led to its wide cultivation and broad breeding,which might cause loss of genetic diversity.This study aims to uncover the genetic diversity of the cultivated and wild Lycium.Methods:The chloroplast genome(CPG)of 34 accessions of Chinese food-medicinal Lycium spp.,including the popular cultivars and their wild relatives,was re-sequenced and assembled,based on which the genetic diversity was evaluated.Results:Sequence structural comparison shows that CPG is comparatively conserved within species.Phylogenetic analysis indicates that CPG is sufficient for the discrimination of Lycium species;combined with nuclear ribosomal internal transcribed spacer(Nr ITS)sequences,materials with mixed genetic backgrounds can be identified.Nucleotide diversity analysis reveals that the modern cultivars are probably with a common maternal parent,while the wild accessions are with higher level of genetic diversity.Conclusion:For the first time this study reveals the intraspecies genetic diversity of Lycium spp.using CPG,highlighting the urgent conservation demand of wild genetic resources of Lycium.Our study also demonstrates that CPG provides crucial evidence for identification of Lycium species with mixed genetic backgrounds and highlights the importance of the wild relatives in genetic diversity conservation.This CPG-based technology will contribute to the sustainable development of medicinal plants broadly.展开更多
It is estimated that by 2030 one sixth of the global population will be aged over 60(WHO,2021).Aging leads to functional decline,which triggers many chronic diseases and geriatrics.It is reported that the elderly ofte...It is estimated that by 2030 one sixth of the global population will be aged over 60(WHO,2021).Aging leads to functional decline,which triggers many chronic diseases and geriatrics.It is reported that the elderly often suffer from geriatric syndromes such as frailty,sarcopenia,weight loss and dementia(Sanford et al.,2020);for those aged over 85,conditions of hearing and vision loss,decline in immune function,cardiovascular diseases,osteoporosis and dementia are in high prevalence(Jaul&Barron,2017).Therefore,aging has been an important risk for chronic diseases and geriatrics globally.展开更多
基金supported by the International Postdoctoral Exchange Fellowship Program(No.YJ20180044)China Postdoctoral Science Foundation(No.2019M660552)+2 种基金CAMS Initiative for Innovative Medicine(No.2016-I2M-2-003)CAMS Innovation Fund for Medical Sciences(No.CIFMS 2021-I2M-1-032)Introducing Talents Start-up Fund of Kunming Institute of Botany,Chinese Academy of Sciences.
文摘Objective:Goji(fruits of Lycium spp.)is commonly consumed as food and medicine.The increasing market demand for goji has led to its wide cultivation and broad breeding,which might cause loss of genetic diversity.This study aims to uncover the genetic diversity of the cultivated and wild Lycium.Methods:The chloroplast genome(CPG)of 34 accessions of Chinese food-medicinal Lycium spp.,including the popular cultivars and their wild relatives,was re-sequenced and assembled,based on which the genetic diversity was evaluated.Results:Sequence structural comparison shows that CPG is comparatively conserved within species.Phylogenetic analysis indicates that CPG is sufficient for the discrimination of Lycium species;combined with nuclear ribosomal internal transcribed spacer(Nr ITS)sequences,materials with mixed genetic backgrounds can be identified.Nucleotide diversity analysis reveals that the modern cultivars are probably with a common maternal parent,while the wild accessions are with higher level of genetic diversity.Conclusion:For the first time this study reveals the intraspecies genetic diversity of Lycium spp.using CPG,highlighting the urgent conservation demand of wild genetic resources of Lycium.Our study also demonstrates that CPG provides crucial evidence for identification of Lycium species with mixed genetic backgrounds and highlights the importance of the wild relatives in genetic diversity conservation.This CPG-based technology will contribute to the sustainable development of medicinal plants broadly.
基金supported by Strategic Consulting Project of Chinese Academy of Engineering (2021-X2-10)
文摘It is estimated that by 2030 one sixth of the global population will be aged over 60(WHO,2021).Aging leads to functional decline,which triggers many chronic diseases and geriatrics.It is reported that the elderly often suffer from geriatric syndromes such as frailty,sarcopenia,weight loss and dementia(Sanford et al.,2020);for those aged over 85,conditions of hearing and vision loss,decline in immune function,cardiovascular diseases,osteoporosis and dementia are in high prevalence(Jaul&Barron,2017).Therefore,aging has been an important risk for chronic diseases and geriatrics globally.
