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Dissecting the key genomic regions underlying high yield potential in common wheat variety‘kenong 9204’

Journal of Integrative Agriculture 2023年第9期22卷 2603-2616页

作者： ZHAO Chun-hua ZHANG Na FAN Xiao-li JI Jun SHI Xiao-li CUI Fa LING Hong-qing LI Jun-ming College of Agriculture Ludong University/Key Laboratory of Molecular Module-based Breeding of High Yield and Abiotic Resistant Plants in Universities of ShandongYantai 264025P.R.China Jiangsu Xuhuai Regional Institute of Agricultural Sciences Xuzhou 221131P.R.China Chengdu Institute of Biology Chinese Academy of SciencesChengdu 610041P.R.China State Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental BiologyInnovation Academy for Seed DesignChinese Academy of SciencesBeijng 100101P.R.China Center for Agricultural Resources Research Institute of Genetics and Developmental BiologyChinese Academy of SciencesShijiazhuang 050022P.R.China Key Laboratory of Molecular and Cellular Biology Ministry of Education/Hebei Collaboration Innovation Center for Cell Signaling/Hebei Key Laboratory of Molecular and Cellular Biology/College of Life SciencesHebei Normal UniversityShijiazhuang 050024P.R.China

The foundation parents play key roles in the genetic improvement of both yield potential and end-use quality in *** the genetic basis that underlies certain beneficial traits in the foundation parents will provide theoretical reference for molecular breeding by a design approach.‘kenong 9204’(KN9204)is a candidate foundation parent characterized by ideotype,high yield potential,and particularly high nitrogen fertilizer *** better understand the genetic basis of its high yield potential,high throughput whole-genome re-sequencing(10×)was performed on KN9204,its parental lines and its derivatives.A high-resolution genetic composition map of KN9204 was constructed,which showed the parental origin of the favorable genomic segments based on the identification of excellent yield-related quantitative trait loci(QTL)from a bi-parental mapping *** 693(XY693),a wheat–Thinopyrum ponticum partial amphidiploid,contributed a great deal to the high yield potential of KN9204,and three major stable QTLs from XY693 were fine *** transmissibility of key genomic segments from KN9204 to its derivatives were delineated,indicating that haplotype blocks containing beneficial gene combinations were conserved along with directional selection by *** for selection sweeps in the breeding programs was *** study provides a theoretical reference for the breeding of high-yield wheat varieties by a molecular design approach.

关键词： kenong 9204 high-yielding potential quantitative trait locus genetic composition map key genomic regions

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Comparative genomic and transcriptomic analyses uncover the molecular basis of high nitrogen-use efficiency in the wheat cultivar kenong 9204

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Molecular Plant 2022年第9期15卷 1440-1456页

作者： Xiaoli Shi Fa Cui Xinyin Han Yilin He Long Zhao Na Zhang Hao Zhang Haidong Zhu Zhexin Liu Bin Ma Shusong Zheng Wei Zhang Jiajia Liu Xiaoli Fan Yaoqi Si Shuiquan Tian Jianqing Niu Huilan Wu Xuemei Liu Zhuo Chen Deyuan Meng Xiaoyan Wang Liqiang Song Lijing Sun Jie Han Hui Zhao Jun Ji Zhiguo Wang Xiaoyu He Ruilin Li Xuebin Chi Chengzhi Liang Beifang Niu Jun Xiao Junming Li Hong-Qing Ling State Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental BiologyInnovation Academy for Seed DesignChinese Academy of SciencesBeijing 100101China Key Laboratory of Molecular Module-Based Breeding of High Yield and Abiotic Resistant Plants in Universities of Shandong College of AgricultureLudong UniversityYantai 264025China Computer Network Information Center Chinese Academy of SciencesBeijing 100190China Center for Agricultural Resources Research Institute of Genetics and Developmental BiologyChinese Academy of SciencesShijiazhuang 050022China State Key Laboratory of Plant Genomics Institute of Genetics and Developmental BiologyInnovation Academy for Seed DesignChinese Academy of SciencesBeijing 100101China College of Advanced Agricultural Sciences University of Chinese Academy of SciencesBeijing 100049China School of Computer Science and Technology University of Chinese Academy of SciencesBeijing 100049China CAS-JIC Centre of Excellence for Plant and Microbial Science Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China Yazhou Bay Seed Laboratory of Hainan Province Sanya 572019China

Studying the regulatory mechanisms that drive nitrogen-use efficiency(NUE)in crops is important for sustainable agriculture and environmental *** this study,we generated a high-quality genome assembly for the high-NUE wheat cultivar kenong 9204 and systematically analyzed genes related to nitrogen uptake and *** comparative analyses,we found that the high-affinity nitrate transporter gene family had expanded in *** studies showed that subsequent functional differentiation endowed the expanded family members with saline inducibility,providing a genetic basis for improving the adaptability of wheat to nitrogen deficiency in various *** explore the genetic and molecular mechanisms of high NUE,we compared genomic and transcriptomic data from the high-NUE cultivar kenong 9204(KN9204)and the low-NUE cultivar Jing 411 and quantified their nitrogen accumulation under high-and low-nitrogen *** with Jing 411,KN9204 absorbed significantly more nitrogen at the reproductive stage after shooting and accumulated it in the shoots and *** data analysis revealed that nitrogen deficiency clearly suppressed the expression of genes related to cell division in the young spike of Jing 411,whereas this suppression of gene expression was much lower in *** addition,KN9204 maintained relatively high expression of NPF genes for a longer time than Jing 411 during seed *** and transcriptome data revealed that KN9204 was more tolerant of nitrogen deficiency than Jing 411,especially at the reproductive *** high NUE of KN9204 is an integrated effect controlled at different *** together,our data provide new insights into the molecular mechanisms of NUE and important gene resources for improving wheat cultivars with a higher NUE trait.

关键词： wheat genome sequencing spatiotemporal gene expression expansion and differentiation of gene family nitrogen use efficiency kenong 9204

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