Brassica napus,commonly known as rapeseed or canola,is a major oil crop contributing over 13%to the stable supply of edible vegetable oil worldwide.Identification and understanding the gene functions in the B.napus ge...Brassica napus,commonly known as rapeseed or canola,is a major oil crop contributing over 13%to the stable supply of edible vegetable oil worldwide.Identification and understanding the gene functions in the B.napus genome is crucial for genomic breeding.A group of genes controlling agronomic traits have been successfully cloned through functional genomics studies in B.napus.In this review,we present an overview of the progress made in the functional genomics of B.napus,including the availability of germplasm resources,omics databases and cloned functional genes.Based on the current progress,we also highlight the main challenges and perspectives in this field.The advances in the functional genomics of B.napus contribute to a better understanding of the genetic basis underlying the complex agronomic traits in B.napus and will expedite the breeding of high quality,high resistance and high yield in B.napus varieties.展开更多
Cuticular wax is a natural barrier on terrestrial plant organs,which protects plants from damages caused by a variety of stresses.Here,we report the identification and functional characterization of a cuticular-wax-re...Cuticular wax is a natural barrier on terrestrial plant organs,which protects plants from damages caused by a variety of stresses.Here,we report the identification and functional characterization of a cuticular-wax-related gene,Zea mays L.SEMI-ROLLED LEAF 5(ZmSRL5).The loss-of-function mutant srl5,which was created by a 3,745 bp in-sertion in the first intron that led to the premature tran-script,exhibited abnormal wax crystal morphology and distribution,which,in turn,caused the pleiotropic pheno-types including increased chlorophyll leaching and water loss rate,decreased leaf temperature,sensitivity to drought,as well as semi-rolled mature leaves.However,total wax amounts showed no significant difference between wild type and semi-rolled leaf5(srl5)mutant.The phenotype of srl5 was confirmed through the generation of two allelic mutants using CRISPR/Cas9.ZmSRL5 encodes a CASPARIAN-STRIP-MEMBRANE-DOMAIN-LIKE(CASPL)protein located in plasma membrane,and highly expressed in developing leaves.Further analysis showed that the expressions of the most wax related genes were not affected or slightly al-tered in srl5.This study,thus,primarily uncovers that ZmSRL5 is required for the structure formation of the cu-ticular wax and could increase the drought tolerance by maintaining the proper cuticular wax structure in maize.展开更多
基金supported by grants from the National Science Fund for Distinguished Young Scholars(32225037)Hubei Hongshan Laboratory(2021HSZD004)+1 种基金HZAU-AGIS Cooperation Fund(SZYJY2022008)Higher Education Discipline Innovation Project(B20051)。
文摘Brassica napus,commonly known as rapeseed or canola,is a major oil crop contributing over 13%to the stable supply of edible vegetable oil worldwide.Identification and understanding the gene functions in the B.napus genome is crucial for genomic breeding.A group of genes controlling agronomic traits have been successfully cloned through functional genomics studies in B.napus.In this review,we present an overview of the progress made in the functional genomics of B.napus,including the availability of germplasm resources,omics databases and cloned functional genes.Based on the current progress,we also highlight the main challenges and perspectives in this field.The advances in the functional genomics of B.napus contribute to a better understanding of the genetic basis underlying the complex agronomic traits in B.napus and will expedite the breeding of high quality,high resistance and high yield in B.napus varieties.
基金We are grateful for the financial support for the study bythe National Key Research and Development Programof China(2016YFDo100303)National NatureScience Foundation of China(31771796 and 31860383).
文摘Cuticular wax is a natural barrier on terrestrial plant organs,which protects plants from damages caused by a variety of stresses.Here,we report the identification and functional characterization of a cuticular-wax-related gene,Zea mays L.SEMI-ROLLED LEAF 5(ZmSRL5).The loss-of-function mutant srl5,which was created by a 3,745 bp in-sertion in the first intron that led to the premature tran-script,exhibited abnormal wax crystal morphology and distribution,which,in turn,caused the pleiotropic pheno-types including increased chlorophyll leaching and water loss rate,decreased leaf temperature,sensitivity to drought,as well as semi-rolled mature leaves.However,total wax amounts showed no significant difference between wild type and semi-rolled leaf5(srl5)mutant.The phenotype of srl5 was confirmed through the generation of two allelic mutants using CRISPR/Cas9.ZmSRL5 encodes a CASPARIAN-STRIP-MEMBRANE-DOMAIN-LIKE(CASPL)protein located in plasma membrane,and highly expressed in developing leaves.Further analysis showed that the expressions of the most wax related genes were not affected or slightly al-tered in srl5.This study,thus,primarily uncovers that ZmSRL5 is required for the structure formation of the cu-ticular wax and could increase the drought tolerance by maintaining the proper cuticular wax structure in maize.
