Burmanniaceae is one major group within the monocot order Dioscoreales that has not had its plastome sequenced.Members of Burmanniaceae are mostly achlorophyllous,although the genus Burmannia also includes autotrophs....Burmanniaceae is one major group within the monocot order Dioscoreales that has not had its plastome sequenced.Members of Burmanniaceae are mostly achlorophyllous,although the genus Burmannia also includes autotrophs.Here,we report sequencing and analysis of the first Burmanniaceae plastid genome from Burmannia disticha L..This plastome is 157,480 bp and was assembled as a circular sequence with the typical quadripartite structure of plant plastid genomes.This plastome has a regular number of potentially functional genes with a total of 111,including 78 protein coding genes,4 ribosomal RNA(rRNA) genes,and 29 tRNA genes.The ratio of the total length of genic:intergenic DNA is 1.58:1,and the mean length of intergenic regions is 398 bp,the longest being 1918 bp.The overall GC content of the B.disticha plastome is 34.90%,and the IR regions in B.disticha are more GC rich(39.50%) than the LSC(32.30%) and SSC(28.80%) regions.Phylogenetic analysis of protein-coding sequences from plastomes of related species in the order Dioscoreales support a clade comprising Burmanniaceae and Dioscoreaceae.This phylogenetic placement is congruent with previous findings based on nuclear and mitochondrial evidence.展开更多
In recent years,the Araliaceae plants have been widely used in the planning of urban garden and road green space. China is rich in Araliaceae plant resources and Araliaceae plants are outstanding in form,but their orn...In recent years,the Araliaceae plants have been widely used in the planning of urban garden and road green space. China is rich in Araliaceae plant resources and Araliaceae plants are outstanding in form,but their ornamental value is less studied. Through the statistical survey of the germplasm resources of Araliaceae plants in southeastern Tibet,and the research and analysis of their functions and ornamental characteristics,this paper concluded that the Araliaceae plants in southeastern Tibet have high ornamental value,and 12 varieties of Araliaceae plants can be used in gardens and have great research and development significance. Finally,it came up with recommendations for the collection and protection,introduction and breeding,and garden application of Araliaceae plant resources.展开更多
基金supported by the Large-scale Scientific Facilities of the Chinese Academy of Sciences(Grant No:2017-LSFGBOWS-02)the Youth Innovation Promotion Association of Chinese Academy of Sciences(2015321)
文摘Burmanniaceae is one major group within the monocot order Dioscoreales that has not had its plastome sequenced.Members of Burmanniaceae are mostly achlorophyllous,although the genus Burmannia also includes autotrophs.Here,we report sequencing and analysis of the first Burmanniaceae plastid genome from Burmannia disticha L..This plastome is 157,480 bp and was assembled as a circular sequence with the typical quadripartite structure of plant plastid genomes.This plastome has a regular number of potentially functional genes with a total of 111,including 78 protein coding genes,4 ribosomal RNA(rRNA) genes,and 29 tRNA genes.The ratio of the total length of genic:intergenic DNA is 1.58:1,and the mean length of intergenic regions is 398 bp,the longest being 1918 bp.The overall GC content of the B.disticha plastome is 34.90%,and the IR regions in B.disticha are more GC rich(39.50%) than the LSC(32.30%) and SSC(28.80%) regions.Phylogenetic analysis of protein-coding sequences from plastomes of related species in the order Dioscoreales support a clade comprising Burmanniaceae and Dioscoreaceae.This phylogenetic placement is congruent with previous findings based on nuclear and mitochondrial evidence.
基金Supported by Key Scientific Research Project of Tibet Autonomous Region"Collection and Utilization of Tibetan Medicinal Flower Resources"
文摘In recent years,the Araliaceae plants have been widely used in the planning of urban garden and road green space. China is rich in Araliaceae plant resources and Araliaceae plants are outstanding in form,but their ornamental value is less studied. Through the statistical survey of the germplasm resources of Araliaceae plants in southeastern Tibet,and the research and analysis of their functions and ornamental characteristics,this paper concluded that the Araliaceae plants in southeastern Tibet have high ornamental value,and 12 varieties of Araliaceae plants can be used in gardens and have great research and development significance. Finally,it came up with recommendations for the collection and protection,introduction and breeding,and garden application of Araliaceae plant resources.
