[Objectives]Fifty two strains were identified and phylogenetically analyzed to solve the current phenomenon of"synonym and homonym"in morels.[Methods]Based on the ITS and LSU sequences of ribosomal DNA,the c...[Objectives]Fifty two strains were identified and phylogenetically analyzed to solve the current phenomenon of"synonym and homonym"in morels.[Methods]Based on the ITS and LSU sequences of ribosomal DNA,the collected 52 morel samples were sequenced,and BLAST alignment was performed by NCBI to construct phylogenetic trees.[Results]The collected morel strains were mainly divided into two major groups:namely black morel and yellow morel groups,of which the black morel group was most,mainly including Morchella sextelata,Morchella importuna,Morchella crassipes,and Morchella eximia.There were very few yellow morel strains,including M.crassipes and M.eximia.[Conclusions]This study lays a foundation for the classification and research of morel germplasm resources,and provides a powerful reference value for the research and production of high-quality morel strains.展开更多
高蛋白的抗病马铃薯对发展中国家和美国均有价值。路易丝安那州立大学(LSU)Jes- se Jaynes博士已合成编码含大量必需氨基酸的蛋白的基因,该蛋白“比现存任何蛋白都好”。该氏合成该基因后,使之在大肠杆菌中表达,然后尝试将其引入各种植...高蛋白的抗病马铃薯对发展中国家和美国均有价值。路易丝安那州立大学(LSU)Jes- se Jaynes博士已合成编码含大量必需氨基酸的蛋白的基因,该蛋白“比现存任何蛋白都好”。该氏合成该基因后,使之在大肠杆菌中表达,然后尝试将其引入各种植物——马铃薯是第一种。该基因在马铃薯中获表达,并已检测出。展开更多
Two new species of superfamily Sphaerolaimoidea:Sphaerolaimus obesus sp.nov.and Pseudosteineria articulata sp.nov.are described from the Yellow Sea.Sphaerolaimus obesus sp.nov.is characterized by body stout,cuticle fi...Two new species of superfamily Sphaerolaimoidea:Sphaerolaimus obesus sp.nov.and Pseudosteineria articulata sp.nov.are described from the Yellow Sea.Sphaerolaimus obesus sp.nov.is characterized by body stout,cuticle finely striated with lateral alae,outer labial sensilla and cephalic sensilla papilliform,eight bunches of subcephalic setae different in length,amphidial fovea situated at the level of buccal cavity,spicules arcuated with proximal end cephalated,gubernaculum with dorsal-caudal directed apophysis different in shape,seven precloacal papilliform supplements,tail conico-cylindrical with three terminal setae.Pseudosteineria articulata sp.nov.is characterized by cuticle distinctly annulated with lateral alae,six outer labial setae jointed,eight rows of subcephalic setae present,two rows of long somatic setae scattered along lateral alae,amphidial fovea posterior to subcephalic setae,spicules curved and jointed with proximal end with large manubrium,gubernaculum slightly funnel-shaped,tail conico-cylindrical.Phylogenetic analysis based on combined rDNA sequences place Sphaerolaimus obesus sp.nov.and Pseudosteineria articulata sp.nov.within family Sphaerolaimidae and Xyalidae,respectively.Relationships analysis within the superfamily Sphaerolaimoidea shows Sphaerolaimidae as a sister clade to Xyalidae and genera of Xyalidae as paraphyletic clades.展开更多
基金Supported by Guizhou Province Science and Technology Innovation Ability Promotion Special Project[2021]1Science and Technology Project of Guizhou Province([2021]YB201,[2019]3007,[2022]YB083)。
文摘[Objectives]Fifty two strains were identified and phylogenetically analyzed to solve the current phenomenon of"synonym and homonym"in morels.[Methods]Based on the ITS and LSU sequences of ribosomal DNA,the collected 52 morel samples were sequenced,and BLAST alignment was performed by NCBI to construct phylogenetic trees.[Results]The collected morel strains were mainly divided into two major groups:namely black morel and yellow morel groups,of which the black morel group was most,mainly including Morchella sextelata,Morchella importuna,Morchella crassipes,and Morchella eximia.There were very few yellow morel strains,including M.crassipes and M.eximia.[Conclusions]This study lays a foundation for the classification and research of morel germplasm resources,and provides a powerful reference value for the research and production of high-quality morel strains.
基金Supported by the Shandong Province Higher Educational Science and Technology Program(No.J 18 KA 152)the Open Project of Liaocheng University Animal Husbandry Discipline(No.319312101)。
文摘Two new species of superfamily Sphaerolaimoidea:Sphaerolaimus obesus sp.nov.and Pseudosteineria articulata sp.nov.are described from the Yellow Sea.Sphaerolaimus obesus sp.nov.is characterized by body stout,cuticle finely striated with lateral alae,outer labial sensilla and cephalic sensilla papilliform,eight bunches of subcephalic setae different in length,amphidial fovea situated at the level of buccal cavity,spicules arcuated with proximal end cephalated,gubernaculum with dorsal-caudal directed apophysis different in shape,seven precloacal papilliform supplements,tail conico-cylindrical with three terminal setae.Pseudosteineria articulata sp.nov.is characterized by cuticle distinctly annulated with lateral alae,six outer labial setae jointed,eight rows of subcephalic setae present,two rows of long somatic setae scattered along lateral alae,amphidial fovea posterior to subcephalic setae,spicules curved and jointed with proximal end with large manubrium,gubernaculum slightly funnel-shaped,tail conico-cylindrical.Phylogenetic analysis based on combined rDNA sequences place Sphaerolaimus obesus sp.nov.and Pseudosteineria articulata sp.nov.within family Sphaerolaimidae and Xyalidae,respectively.Relationships analysis within the superfamily Sphaerolaimoidea shows Sphaerolaimidae as a sister clade to Xyalidae and genera of Xyalidae as paraphyletic clades.
