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Functional divergences of natural variations of TaNAM-A1 in controlling leaf senescence during wheat grain filling

Journal of Integrative Plant Biology 2024年第6期66卷 1242-1260页

作者： Longxi Zhou Guowei Chang Chuncai Shen Wan Teng Xue He Xueqiang Zhao Yanfu Jing Zhixiong Huang yiping tong Key Laboratory of Seed Innovation Institute of Genetics and Developmental SciencesChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China The Innovative Academy of Seed Design Chinese Academy of SciencesBeijing 100101China

Leaf senescence is an essential physiological process related to grain yield potential and nutritional *** leaf duration(GLD)after anthesis directly reflects the leaf senescence process and exhibits large genotypic differences in common wheat;however,the underlying gene regulatory mechanism is still ***,we identified TaNAM-A1 as the causal gene of the major loci q GLD-6A for GLD during grain filling by map-based *** assays and TILLING mutant analyses demonstrated that TaNAM-A1 played a critical role in regulating leaf senescence,and also affected spike length and grain ***,the functional divergences among the three haplotypes of TaNAM-A1 were systematically *** varieties with TaNAM-A1d(containing two mutations in the coding DNA sequence of TaNAM-A1)exhibited a longer GLD and superior yield-related traits compared to those with the wild type *** three haplotypes were functional in activating the expression of genes involved in macromolecule degradation and mineral nutrient remobilization,with TaNAM-A1a showing the strongest activity and TaNAM-A1d the ***-A1 also modulated the expression of the senescencerelated transcription factors TaNAC-S-7A and ***016-3A enhanced the transcriptional activation ability of TaNAM-A1a by protein–protein interaction,thereby promoting the senescence *** study offers new insights into the fine-tuning of the leaf functional period and grain yield formation for wheat breeding under various geographical climatic conditions.

关键词： allelic variation leaf senescence map-based cloning TaNAM-A1 transcription factor Triticum aestivum

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TabHLH27 orchestrates root growth and drought tolerance to enhance water use efficiency in wheat

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Journal of Integrative Plant Biology 2024年第7期66卷 1295-1312页

作者： Dongzhi Wang Xiuxiu Zhang Yuan Cao Aamana Batool Yongxin Xu Yunzhou Qiao Yongpeng Li Hao Wang Xuelei Lin Xiaomin Bie Xiansheng Zhang Ruilian Jing Baodi Dong yiping tong Wan Teng Xigang Liu Jun Xiao Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Center for Agricultural Resources Research Institute of Genetics and Developmental BiologyChinese Academy of SciencesShijiazhuang 050022China Key Laboratory of Crop Biology College of Life SciencesShandong Agricultural UniversityTai'an 271018China State Key Laboratory of Crop Gene Resources and Breeding Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China Ministry of Education Key Laboratory of Molecular and Cellular Biology Hebei Research Center of the Basic Discipline of Cell BiologyHebei Collaboration Innovation Center for Cell Signaling and Environmental AdaptationHebei Key Laboratory of Molecular and Cellular BiologyCollege of Life SciencesHebei Normal UniversityShijiazhuang 050024China Centre of Excellence for Plant and Microbial Science(CEPAMS) JIC‐CASBeijing 100101China

Cultivating high-yield wheat under limited water resources is crucial for sustainable agriculture in semiarid *** water scarcity,plants activate drought response signaling,yet the delicate balance between drought tolerance and development remains *** genome-wide association studies and transcriptome profiling,we identified a wheat atypical basic helix-loop-helix(b HLH)transcription factor(TF),Tab HLH27-A1,as a promising quantitative trait locus candidate for both relative root dry weight and spikelet number per spike in *** HLH27-A1/B1/D1 knockout reduced wheat drought tolerance,yield,and water use efficiency(WUE).Tab HLH27-A1 exhibited rapid induction with polyethylene glycol(PEG)treatment,gradually declining over *** activated stress response genes such as Ta CBL8-B1 and Ta CPI2-A1 while inhibiting root growth genes like Ta SH15-B1 and Ta WRKY70-B1 under short-term PEG *** distinct transcriptional regulation of Tab HLH27-A1 involved diverse interacting factors such as Ta ABI3-D1 and Tab *** variations of Tab HLH27-A1influence its transcriptional responses to drought stress,with Tab HLH27-A1^(Hap-II)associated with stronger drought tolerance,larger root system,more spikelets,and higher WUE in ***,the excellent Tab HLH27-A1^(Hap-II)was selected during the breeding process in China,and introgression of Tab HLH27-A1^(Hap-II)allele improved drought tolerance and grain yield,especially under water-limited *** study highlights Tab HLH27-A1's role in balancing root growth and drought tolerance,providing a genetic manipulation locus for enhancing WUE in wheat.

关键词： drought tolerance GWAS root growth wheat WUE

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The contribution of distant hybridization with decaploid Agropyron elongatum to wheat improvement in China

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Journal of Genetics and Genomics 2008年第8期35卷 451-456页

作者： Zhensheng Li Bin Li yiping tong State Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental Biology Chinese Academy of Sciences Beijing 100101 China

Wheat is a staple food crop in the world as well as in China. Because of the progress of wheat breeding and other agricultural ＂sci-technologies, the wheat grain yield per unit area has increased more than five folds from 1952 to 2006 in China. The first part of this article briefly reviews the history of wheat breeding in China. Second, the establishment of ＂Triticum aestivum-Agropyron＂ distant hybridization system and its contribution to wheat production and breeding in China are summarized. Finally, the future challenges of wheat breeding are discussed, which include how to increase the utilization efficiencies of water, soil nutrient and light energy through breeding. As an example, our research progress on how to increase light use efficiency in wheat through breeding is introduced and discussed.

关键词： wheat improvement distant hybridization Agropyron elongatum light use efficiency

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Genetic analysis of tolerance to photo-oxidative stress induced by high light in winter wheat (Triticum aestivum L.)

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Journal of Genetics and Genomics 2010年第6期37卷 399-412页

作者： Hongwei Li yiping tong Bin Li Ruilian Jing Congming Lu Zhensheng Li State Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental Biology Chinese Academy of Sciences Beijing 100101 China Institute of Crop Sciences Chinese Academy of Agricultural Sciences Beijing 100081 China Key Laboratory of Photosynthesis and Environmental Molecular Physiology Photosynthesis Research Center Institute of Botany Chinese Academy of Sciences Beijing 100093 China

High light induced photooxidation （HLIP） usually leads to leaf premature senescence and causes great yield loss in winter wheat. In order to explore the genetic control of wheat tolerance to HLIP stress, a quantitative trait loci （QTL） analysis was conducted on a set of doubled haploid population, derived from two winter wheat cultivars. Actual values of chlorophyll content （Chl）, minimum fluorescence level （Fo）, maximum fluorescence level （Fm）, and the maximum quan^m efficiency of photosystem II （Fv/Fm） under both HLIP and non-stress conditions as well as the ratios of HLIP to non-stress were evaluated. HLIP considerably reduced Chl, Fm, and Fv/Fm, but in- creased Fo, compared with that under non-stress condition. A total of 27, 16, and 28 QTLs were associated with the investigated traits under HLIP and non-stress and the ratios of HLIP to non-stress, respectively. Most of the QTLs for the ratios of HLIP to non-stress collocated or nearly linked with those detected under HLIP condition. HLIP-induced QTLs were mapped on 15 chromosomes, involving in 1A, 1B, 1D, 2A, 2B, 2D, 3A, 3B, 4A, 4D, 5B, 6A, 6B, 7A, and 7D while those expressed under non-stress condition involved in nine chromosomes, includ- ing 1B, 1D, 2A, 2B, 3B, 4A, 5A, 5B, and 7A. The expression patterns of QTLs under HLIP condition were different from that under non-stress condition except for six loci on five chromosomes. The phenotypic variance explained by individual QTL ranged from 5.0% to 19.7% under HLIP, 8.3% to 20.8% under non-stress, and 4.9% to 20.2% for the ratios of HLIP to non-stress, respectively. Some markers, for example, Xgwm192 and WMC331 on 4D regulating Chl, Fo, Fm, and Fv/Fm under HLIP condition, might be used in marker assistant selection.

关键词： Triticum aestivum photooxidation high light chlorophyll content chlorophyll fluorescence grain filling QTL

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Characterization of the promoter of phosphate transporter TaPHT1.2 differentially expressed in wheat varieties

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Journal of Genetics and Genomics 2009年第8期36卷 455-466页

作者： Jun Miao Jinghan Sun Dongcheng Liu Bin Li Aimin Zhang Zhensheng Li yiping tong The State Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental Biology Chinese Academy of Sciences Beijing 100101 China Vegetable Research Institute ShandongAcademy of Agricultural Sciences Jinan 250100 China

TaPHT1.2 is a functional, root predominantly expressed and low phosphate （Pi） inducible high-affinity Pi transporter in wheat, which is more abundant in the roots of P-efficient wheat genotypes （e.g., Xiaoyan 54） than in P-inefficient genotypes （e.g., Jing 411） under both Pi-deficient and Pi-sufficient conditions. To characterize TaPHT1.2 further, we genetically mapped a TaPHT1.2 transporter, TaPHT1.2-D1, on the long arm of chromosome 4D using a recombinant inbred line population derived from Xiaoyan 54 and Jing 411, and isolated a 1,302 bp fragment of the TaPHT1.2-D1 promoter （PrTaPHT1.2-D1） from Xiaoyan 54. TaPHT1.2-D1 shows collinearity with OsPHT1.2 that has previously been reported to mediate the translocation of Pi from roots to shoots. PrTaPHT1.2-D contains a number of Pi-starvation responsive elements, including P1BS, WRKY-binding W-box, and helix-loop-helix-binding elements. PrTaPHT1.2-D1 was then used to drive expression of 13-glucuronidase （GUS） reporter gene in Arabidopsis through Agrobacterium-mediated transformation. Histochemical analysis of transgenic Arabidopsis plants showed that the reporter gene was specifically induced by Pi-starvation and predominantly expressed in the roots. As there is only one SNP between the TaPHT1.2-D1 promoters of Xiaoyan 54 and Jing 411, and this SNP does not exist within the Pi-starvation responsive elements, the differential expression of TaPHT1.2 in Xiaoyan 54 and Jing 411 may not be caused by this SNP.

关键词： high-affinity phosphate transporter TaPHT1.2 promoter differential expression Triticum aestivum L.

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Low-affinity SPL binding sites contribute to subgenome expression divergence in allohexaploid wheat

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Science China(Life Sciences) 2023年第4期66卷 819-834页

作者： Hongcui Pei Wan Teng Lifeng Gao Hengbin Gao Xueni Ren Yanhong Liu Jizeng Jia yiping tong Yonghong Wang Zefu Lu Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081China State Key Laboratory of Crop Biology College of Life SciencesShandong Agricultural UniversityTai’an 271018China Institute of Genetics and Developmental Biology Chinese Academy of SciencesBeijing 100101China The State Key Laboratory for Plant Cell and Chromosome Engineering the Innovative Academy of Seed DesignChinese Academy of SciencesBeijing 100101China

Expression divergence caused by genetic variation and crosstalks among subgenomes of the allohexaploid bread wheat(Triticum aestivum.L.,BBAADD)is hypothesized to increase its adaptability and/or ***,the molecular basis of expression divergence remains *** promoter-binding protein-like(SPL)transcription factors are critical for a wide array of biological *** this study,we constructed expression regulatory networks by combining DAP-seq for 40 SPLs,ATACseq,and *** findings indicate that a group of low-affinity SPL binding regions(SBRs)were targeted by diverse SPLs and caused different sequence preferences around the core GTAC *** SBRs including the low-affinity ones are evolutionarily conserved,enriched GWAS signals related to important agricultural ***,those SBRs are highly diversified among the cis-regulatory regions(CREs)of syntenic genes,with less than 8%SBRs coexisting in triad genes,suggesting that CRE variations are critical for subgenome *** out of Ta SPL7A/B/D and Ta SPL15A/B/D subfamily further proved that both high-and low-affinity SBRs played critical roles in the differential expression of genes regulating tiller number and spike *** results have provided baseline data for downstream networks of SPLs and wheat improvements and revealed that CRE variations are critical sources for subgenome divergence in the allohexaploid wheat.

关键词： wheat(Triticum aestivum L.) squamosa promoter-binding protein-like(SPL) transcriptional regulation cis-regulatory regions polyploidization low-affinity binding sites

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Evaluation on abundance or deficiency of avai－lable trace elements in soil of middle area in China and the effect of applying trace element fertilizer

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Journal of Environmental Sciences 1994年第3期6卷 361-372页

作者： Li Jiyun Liu Xiudi Fan Lihong tong yiping Yang Junhui(Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China)

The authors selected the west part of Xinxiang City,Henan Province in the north China plain as a typical region and carried out assessments of the abundanca or deficiency of the trace ele- ments(B,Mn,Mo,Zn,Cu,Fe)in *** can be seen from results that more than 80% of the farmland is deficiency of zinc(<1.0ppm),40% of molybdenum(0.15ppm),38% of boron(0.5ppm),29% of manganese(100ppm)and 13% of iron(7.0ppm)and that the content of available trace ele- ments in soil are related to the topography *** the proper application of trace elements on grain crops is presented.

关键词： evaluation available trace element soil type topography.

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Evaluation of genotoxicity of combined soil pollution by cadmium and imidacloprid

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Science China(Life Sciences) 2005年第Z1期48卷 7-13页

作者： LIN Aijun ZHU Yongguan tong yiping Research Center for Eco-environmental Sciences Chinese Academy of Sciences Beijing 100085 China Research Center for Eco-environmental Sciences Chinese Academy of Sciences Beijing 100085 China Research Center for Eco-environmental Sciences Chinese Academy of Sciences Beijing 100085 China

Cadmium (Cd) is one of the important pollutants of soil and the genotoxicity of Cd-contaminated soil was studied in combination with imidacloprid. The single cell gel electro-phoresis or comet assay was used to quantify DNA strand breaks as a measure of DNA damage induced by Cd and imidacloprid contamination in soil. The soil was artificially contaminated by Cd (0.0, 0.2, 0.5, 1.0, 2.0 mg·kg-1 dry soil) or Cd (0.0, 0.2, 0.5, 1.0, 2.0 mg·kg-1 dry soil) and imidacloprid (0.5 mg-kg^1 dry soil). Roots of Vicia faba were exposed to the contaminated soil for 2 h at 25℃ and were used in the comet assay. DNA damage was measured as the values of percentage of nuclei with tails, tail length, tail DNA, tail moment (TM), and Olive tail moment (OTM). DNA damages of root tips of Vicia faba increased after Cd treatment and there were dose-related increases in DNA damage measured as these parameters. However, the addition of imidacloprid further increased the DNA damage. These data confirmed the genotoxic effect of Cd to plants, and that the combined pollution with imidacloprid can enhance the genotoxicity of Cd.

关键词： atrazine, imidacloprid, mixture pollution, genotoxicity, comet assay.

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Dynamic changes in flag leaf angle contribute to high photosynthetic capacity

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Chinese Science Bulletin 2009年第17期54卷 3045-3052页

作者： LIU YongKang LI MingJun LI JingYuan LI XiaoJuan YANG XingHong tong yiping ZHANG AiMin LI Bin LIN JinXing KUANG TingYun LI ZhenSheng Institute of Biology Henan Normal University Xinxiang 453007 China Institute of Botany Chinese Academy of Sciences Beijing 100093 China State Key Laboratory of Crop Biology Shandong Agricultural University Tai'an 271018 China Institute of Genetics and Developmental Biology Chinese Academy of Sciences Beijing 100101 China

Dynamic changes in flag leaf angle, anatomy, photosynthesis, chlorophyll content, population photosynthesis, and light transmission are investigated in three wheat cultivars: Xiaoyan 81 (Xy 81) in which flag leaf angle changes from erect to draped, Xiaoyan 41 (Xy 41) in which flag leaf angle changes from erect to half draped (middle type), and Xiaoyan 6 (Xy 6) in which the flag leaf remains erect from the flowering to the grain-filling stage. No obvious differences in leaf thickness, leaf area, mesophyll morphology, granal stacking, photosynthesis, or chlorophyll content are found among the three cultivars. It is of interest to find that the flag leaf angle of Xy 81 changes from erect to draped during the grain - filling stage, but there are no obvious changes in chlorophyll content or photosynthetic capacity during this period, indicating that changes in flag leaf angle do not result from senescence. Moreover, the study shows that levels of population photosynthesis and light transmission in Xy 81 are higher than in Xy 41 and Xy 6. Taken together, these results demonstrate that dynamic changes in Xy 81 flag leaf angle enhance population photosynthesis and thus may improve wheat yield.

关键词：动态变化光合能力叶角叶绿素含量光合作用小麦品种小偃6号叶片厚度

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TabZIP60 mediates nitrogen distribution by regulating TaNADH-GoGAT expression in wheat

TabZIP60 mediates nitrogen distribution by regulating TaNADH...

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第八届全国小麦基因组学及分子育种大会

作者： Junbo Yang yiping tong State Key Laboratory for Plant Cell and Chromosome Engineering Institute of Genetics and Developmental SciencesChinese Academy of Sciences

Nitrogen(N) is an essential nutrient for crop productivity;great progresses have been achieved with efficient use of N fertilizer through optimizing N fertilizer *** modern agricultural crops,especially wheat,are highly inefficient in their N *** has been estimated that more than 50%of the N fertilizer applied to the soil is wasted and caused pollution.A reduction in the use of N fertilizer and engineering the N use efficiency(NUE) of crops would contribute to a sustainable *** we describe the ABF transcription factor,TabZIP60,involved in the accumulation and alfocation ofN in ***60 is nitrate-repressive and ***-down of TabZIP60 in wheat plants enhanced root growth and altered N distribution ratio in above-ground ***-seq and EMSA showed that Tab23 P60 was able to bind the promoter of TaNADH-GoGAT,and luciferase assay showed that TabZEP60 inhibited the transcription of *** analysis indicated that overexpression of TaNADH-GoGAT promoted root growth and altered N *** results suggest that TabZIP60 is involved in nitrate signaling and may mediate N distribution by regulating TaNADH-GoGAT expression in wheat.

关键词： Triticum aestivum Nitrogen use efficiency NADH-GoGAT ABF transcription factor Nitrogen redistribution

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