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Dynamics and genetic regulation of macronutrient concentrations during grain development in maize

Journal of Integrative Agriculture 2024年第3期23卷 781-794页

作者： Pengcheng Li Shuangyi Yin Yunyun Wang Tianze Zhu Xinjie Zhu Minggang Ji Wenye Rui Houmiao Wang Chenwu Xu Zefeng Yang Jiangsu Key laboratory of Crop genetics and Physiology/Key laboratory of Plant Functional Genomics Ministry of Education/Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Agricultural CollegeYangzhou UniversityYangzhou 225009China Jiangsu Co-lnnovation Center for Modern Production Technology of Grain Crops Yangzhou UniversityYangzhou 225009China

Nitrogen(N), phosphorus(P), and potassium(K) are essential macronutrients that are crucial not only for maize growth and development, but also for crop yield and quality. The genetic basis of macronutrient dynamics and accumulation during grain filling in maize remains largely unknown. In this study, we evaluated grain N, P, and K concentrations in 2.6 recombinant inbred lines generated from a cross of DH1M and T877 at six time points after pollination. We then calculated conditional phenotypic values at different time intervals to explore the dynamic characteristics of the N, P, and K concentrations. Abundant phenotypic variations were observed in the concentrations and net changes of these nutrients. Unconditional quantitative trait locus(QTL) mapping revealed 41 non-redundant QTLs, including 17, 16, and 14 for the N, P, and K concentrations, respectively. Conditional QTL mapping uncovered 39 non-redundant QTLs related to net changes in the N, P, and K concentrations. By combining QTL, gene expression, co-expression analysis, and comparative genomic data, we identified 44, 36, and 44 candidate genes for the N, P, and K concentrations, respectively, including GRMZM2.371058 encoding a Doftype zinc finger DNA-binding family protein, which was associated with the N concentration, and GRMZM2.113967encoding a CBL-interacting protein kinase, which was related to the K concentration. The results deepen our understanding of the genetic factors controlling N, P, and K accumulation during maize grain development and provide valuable genes for the genetic improvement of nutrient concentrations in maize.

关键词： maize nutrient concentration unconditional QTL mapping conditional QTL mapping dynamic trait

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Dt1 inhibits SWEET-mediated sucrose transport to regulate photoperiod-dependent seed weight in soybean

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molecular Plant 2024年第3期17卷 496-508页

作者： Xiaoming Li Zhonghui Chen Haiyang Li Lin Yue Cuirong Tan Hongjie Liu Yilong Hu Yuhua Yang Xiani Yao Lingping Kong Xiang Huangi Bin Yu Chunyu Zhang Yuefeng Guan Baohui Liu Fanjiang Kong Xingliang Hou Guangdong Provincial Key laboratory of Applied Botany&State Key laboratory of Plant Diversity and Specialty Crops South China Botanical GardenChinese Academyof SciencesGuangzhou510650China Guangdong Provincial Key laboratory of Plant Adaptation and molecular Design Guangzhou Key Laboratory of Crop Gene EditingInnovative Center of Molecular Genetics and EvolutionSchool of Life SciencesGuangzhou UniversityGuangzhou 510006China University of Chinese Academy of Sciences Beijing 100049China College of Agronomy and Biotechnology China Agricultural UniversityBeijing 100193China

Soybean is a photoperiod-sensitive short-day crop whose reproductive period and yield are markedly affected by day-length *** weight is one of the key traits determining the soybean yield;how-ever,the prominent genes that control the final seed weight of soybean and the mechanisms underlying the photoperiod's effect on this trait remain poorly *** this study,we identify SwW19 as a major locus controlling soybean seed weight by QTL mapping and determine Dt1,an orthologous gene of Arabidopsis TFL1 that is known to govern the soybean growth habit,as the causal gene of the SW19 *** showed that Dt1 is highly expressed in developing seeds and regulates photoperiod-dependent seed weight in *** analyses revealed that the Dt1 protein physically interacts with the sucrose transporter GmSWEET10a to negatively regulate the import of sucrose from seed coat to the embryo,thus modulating seed weight under long ***,Dt1 does not function in seed development under short days due to its very low ***,we discovered a novel natural allelic variant of Dt1(H4 haplotype)that decouples its pleiotropic effects on seed size and growth habit;i.e.,this variant remains functional in seed development but fails to regulate the stem growth habit of ***,our findings provide new insights into how soybean seed development responds to photoperiod at different latitudes,offering an ideal genetic component for improving soybean's yield by manipulating its seed weightandgrowth habit.

关键词： soybean seed weight photoperiod dt1 sucrose transport

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A nonenzymatic electrochemical sensor for the detection of hydrogen peroxide in vitro and in vivo fibrosis models

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Chinese Chemical Letters 2024年第3期35卷 394-398页

作者： Hongyao Liu Yan Yu Taixiong Xue Cailing Gan Yuting Xie Doudou Wang Peilin Li Zhiyong Qian Tinghong Ye Department of Gastroenterology and Hepatology Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer and Frontiers Science Center for Disease-Related Molecular NetworkState Key Laboratory of BiotherapyWest China HospitalSichuan UniversityChengdu 610041China Department of Biotherapy Cancer Center and State Key Laboratory of BiotherapyWest China HospitalSichuan UniversityChengdu 610041China

Fibrosis occurs due to the excessive deposition of extracellular matrix caused by cell *** various types of tissue injury,the dysregulation of the internal response can eventually lead to the destruction of organ structure and *** is increasing evidence that oxidative stress,which is characterized by excessive production of hydrogen peroxide(H_(2.O_(2.),is an important cause of ***,we synthesized a biosensitive and efficient electrochemical H_(2.O_(2.sensor based on PtNi nanoparticle-doped N-reduced graphene oxide(PtNi-N-rGO)to detect H_(2.O_(2.released from transforming growth factorβ1(TGFβ1)-induced *** addition,the sensor could easily detect changes in H_(2.O_(2.in the lung and bronchoalveolar lavage fluid(BALF)of mice with pulmonary ***,the sensor could also detect H_(2.O_(2.in activated hepatic stellate cells and the liver of carbon tetrachloride(CCl_(4))-induced liver ***,the alterations in H_(2.O_(2.detected by the sensor were consistent with nicotinamide adenine dinucleotide phosphate oxidase 4(NOX4)protein expression and the staining results of pathological *** together,these results highlight the use of H_(2.O_(2.sensors for the rapid detection of fibrosis and facilitate the rapid evaluation of antifibrotic drug candidates.

关键词： Fibrosis H_(2.O_(2. Electrochemical sensor NOX4 Nintedanib

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Integrating machine learning and genome editing for crop improvement

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aBIOTECH 2024年第2期5卷 262-277页

作者： Long Chen Guanqing Liu Tao Zhang Jiangsu Key laboratory of Crop Genomics and molecular Breeding/Zhongshan Biological Breeding laboratory/Key laboratory of Plant Functional Genomics of the Ministry of Education Agricultural College of Yangzhou UniversityYangzhou 225009China Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops/Jiangsu Key laboratory of Crop genetics and Physiology Yangzhou UniversityYangzhou 225009China

Genome editing is a promising technique that has been broadly utilized for basic gene function studies and trait ***,the exponential growth of computational power and big data now promote the application of machine learning for biological *** this regard,machine learning shows great potential in the refinement of genome editing systems and crop ***,we review the advances of machine learning to genome editing optimization,with emphasis placed on editing efficiency and specificity ***,we demonstrate how machine learning bridges genome editing and crop breeding,by accurate key site detection and guide RNA ***,we discuss the current challenges and prospects of these two techniques in crop *** integrating advanced genome editing techniques with machine learning,progress in crop breeding will be further accelerated in the future.

关键词： Machine learning Genome editing Crop improvement molecular design breeding

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Self-assembled amphiphilic NIR-Ⅱ emissive nano-micelles for imaging-guided photothermal therapy of colorectal cancer

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Science china Chemistry 2024年第8期67卷 2767-2774页

作者： Axin He Fangfang Xia Da Han Qinglai Yang Weihong Tan Institute of molecular Medicine(IMM) Renji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200240China Center for molecular Imaging Probe Hunan Province Key Laboratory of Cancer Cellular and Molecular PathologyCancer Research InstituteHengyang Medical SchoolUniversity of South ChinaHengyang 421001China The Key laboratory of Zhejiang Province for Aptamers and Theranostics Zhejiang Cancer Hospital Hangzhou Institute of Medicine(HIM)Chinese Academy of SciencesHangzhou 310022China molecular Science and Biomedicine laboratory(MBL) State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringCollege of BiologyAptamer Engineering Center of Hunan ProvinceHunan UniversityChangsha 410082China

Colorectal cancer(CRC) is one of the major causes of cancer-related mortality worldwide. Most near-infrared(NIR) agents used in clinical CRC treatment are at NIR-I(700–900 nm) window, which has limitations on deep tissue, and fluorescent probes in the second NIR(1,000–1,700 nm) allow high-resolution bioimaging with deep tissue penetration. However, existing NIR-II fluorophores used in clinical are still rare. Herein, based on shielding-donor-acceptor-donor-shielding(S-D-A-D-S) scaffold, we developed an organic small-molecule fluorophore IR-BTGP with NIR-II emission for imaging-guided photothermal therapy(PTT) in CRC mice model. Amphiphilic IR-BTGP can be self-assembled into spherical nano-micelles, which presents reliable water solubility and photothermal conversion efficiency(30.2.). In vitro experiments indicate that cancer cells treated with IRBTGP were significantly killed upon 808 nm light irradiation. Furthermore, in vivo NIR-II fluorescence imaging confirms that IR-BTGP accumulates in the tumor region. Remarkably, a significant tumor inhibition rate(78.5%) was observed in tumorbearing mice when treated with IR-BTGP plus 808 nm irradiation. Therefore, this work shows that IR-BTGP holds great promise as an NIR-II fluorescence imaging-guided PTT platform for CRC in the future.

关键词： photothermal therapy(PTT) second near-infrared(NIR-Ⅱ)imaging organic molecule

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An abundant valuable resource for salt-tolerance allele hunting in rice

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Plant Communications 2024年第4期5卷 127-128页

作者： Nai-Qian Dong Hong-Xuan Lin National Key laboratory of Plant molecular {2. CAS Center for Excellence in Molecular Plant SciencesShanghai Institute of Plant Physiology and EcologyChinese Academy of SciencesShanghai 200032China University of the Chinese Academy of Sciences Beijing 100049China School of Life Science and Technology ShanghaiTech UniversityShanghai 201210China

Soil salinity is a major abiotic stressor that limits plant growth and crop productivity ***,soil salinity is predictably increasing owing to global climate change,over-fertilization,and various farm irrigation ***,there are more than 833 million hectares of salt-affected soils around the globe(8.7%of the planet),accounting for approximately 2.%–50%of irrigated soils and posing a significant threat to food production and security for over 1.5 billion people worldwide as a result of salt-induced land degradation(FAO,2.2.;https://***/global-soil-partnership/resources/highlights/detail/en/c/1445579/).

关键词： soil salinity abundant

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Nickel-Catalyzed Regiodivergent Acylzincation of Styrenes with Organozincs and CO

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Chinese Journal of Chemistry 2024年第6期42卷 599-604页

作者： Chenglong Wang Ning Liu Xianqing Wu Jingping Qu Yifeng Chen Key laboratory for Advanced Materials and Joint International research laboratory of Precision Chemistry and molecular Engineering Feringa Nobel Prize Scientist Joint Research CenterFrontiers Science Center for Materiobiology and Dynamic ChemistrySchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai200237 China Dedicated to the Special Issue of C1 Chemistry.

Transition metal-catalyzed carbometallation of unsaturated hydrocarbons constitutes one of the most efficient synthetic methodologies for the construction of C—C ***,the incorporation of organometallic reagent with the CO gas as a nucleophilic acyl synthon could enable the acylmetallation reaction,which greatly increases the horizon of carbometallation ***,we report a nickel-catalyzed regiodivergent acylzincation of o-cyano cinnamate ester and o-cyano styrene,in which the cyano moiety intramolecularly captures zinc intermediates to trigger the tandem cyclization *** protocol features mild conditions,broad substrate scope and excellent functional group tolerance,thus affording a diverse array of highly functionalized carbocyclic compounds.

关键词： Carbonylation Carbometallation Styrene Nickel Cyclization

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A warm temperature-released negative feedback loop fine-tunes PIF4-mediated thermomorphogenesis in Arabidopsis

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Plant Communications 2024年第5期5卷 208-224页

作者： Hui Li Mande Xue Huairen Zhang Fengyue Zhao Xiaoyi Li Shuancang Yu Danhua Jiang Key laboratory of Seed Innovation Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina University of Chinese Academy of Sciences BeijingChina Beijing Vegetable research Center Beijing Academy of Agriculture and Forestry Sciences(BAAFS)BeijingChina National Center for Soybean Improvement State Key Laboratory of Crop Genetics and Germplasm EnhancementCollege of AgricultureNanjing Agricultural UniversityNanjingChina

Plants can sense temperature changes and adjust their growth *** Arabidopsis,high ambient temperatures stimulate stem elongation by activating a key thermoresponsive regulator,PHYTOCHROME INTERACTING FACTOR 4(PIF4).Here,we show that warmth promotes the nighttime transcription of GI,which is necessary for the high temperature-induced transcription of *** analyses suggest that GI prevents excessive thermoresponsive growth by inhibiting PIF4,with this regulatory mechanism be-ing partially reliant on *** transcription is repressed by ELF3 and HY5,which concurrently inhibit PIF4 expression and *** elevation causes the deactivation or degradation of ELF3 and HY5,leading to PIF4 activation and relief of GI transcriptional repression at high *** allows PIF4 to further activate GI transcription in response to elevated ***,in turn,inhibits PIF4,es-tablishing a negative feedback loop thatfine-tunes PIF4 *** addition,we demonstrate that ELF3,HY5,and PIF4 regulate GI transcription by modulating the enrichment of histone variant H2..Z at the GI ***,ourfindings suggest that thermal release of a negative feedback loopfinely adjusts plant thermomorphogenesis.

关键词： temperature thermomorphogenesis PIF4 GI TOC1 feedback loop

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TabHLH2. 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 HLH2.-A1,as a promising quantitative trait locus candidate for both relative root dry weight and spikelet number per spike in *** HLH2.-A1/B1/D1 knockout reduced wheat drought tolerance,yield,and water use efficiency(WUE).Tab HLH2.-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 HLH2.-A1 involved diverse interacting factors such as Ta ABI3-D1 and Tab *** variations of Tab HLH2.-A1influence its transcriptional responses to drought stress,with Tab HLH2.-A1^(Hap-II)associated with stronger drought tolerance,larger root system,more spikelets,and higher WUE in ***,the excellent Tab HLH2.-A1^(Hap-II)was selected during the breeding process in china,and introgression of Tab HLH2.-A1^(Hap-II)allele improved drought tolerance and grain yield,especially under water-limited *** study highlights Tab HLH2.-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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A 48-bp deletion upstream of LIGULELESS 1 alters rice panicle architecture

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The Crop Journal 2024年第2期12卷 354-363页

作者： Linhua Wu Min Hu Shuwei Lyu Wenfeng Chen Hang Yu Qing Liu Wei He Chen Li Zuofeng Zhu Rice research Institute Guangdong Academy of Agricultural SciencesGuangzhou 510640GuangdongChina National Center for Evaluation of Agricultural Wild Plants(Rice) Department of Plant Genetics and BreedingChina Agricultural UniversityBeijing 100193China State Key laboratory for Rice Biology and Breeding China National Rice Research InstituteHangzhou 310006ZhejiangChina Key laboratory of genetics and Breeding of High Quality Rice in Southern {2.(Co-construction by Ministry and Province) Ministry of Agriculture and Rural AffairsGuangzhou 510640GuangdongChina Guangdong Key laboratory of New Technology in Rice Breeding Guangzhou 510640GuangdongChina Guangdong Rice Engineering laboratory Guangzhou 510640GuangdongChina

Panicle architecture is an agronomic determinant of crop yield and a target for cereal crop *** investigate its molecular mechanisms in rice,we performed map-based cloning and characterization of OPEN PANICLE 1(OP1),a gain-of-function allele of LIGULELESS 1(LG1),controlling the spread-panicle *** allele results from a 48-bp deletion in the LG1 upstream region and promotes pulvinus development at the base of the primary *** OP1 expression and altered panicle phenotype in chimeric transgenic plants and upstream-region knockout mutants indicated that the deletion regulates spread-panicle architecture in the mutant spread panicle 1(sp1).Knocking out BRASSINOSTEROID UPREGULATED1(BU1)gene in the background of OP1 complementary plants resulted in compact panicles,suggesting OP1 may regulate inflorescence architecture via the brassinosteroid signaling *** regard that manipulating the upstream regulatory region of OP1 or genes involved in BR signal pathway could be an efficient way to improve rice inflorescence architecture.

关键词： Upstream region Panicle architecture Gene expression BR Rice

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