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Dynamic modulation of nodulation factor receptor levels by phosphorylation-mediated functional switch of a RING-type E3 ligase during legume nodulation

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Molecular Plant 2024年第7期17卷 1090-1109页

作者： Hao Li Yajuan Ou Jidan Zhang Kui Huang Ping Wu Xiaoli Guo Hui Zhu Yangrong Cao national key Lab of {2. microbiology Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhan 430070China national key Lab of {2. microbiology College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhan 430070China

The precise control of receptor levels is crucial for initiating cellular signaling transduction in response to specific ligands;however,such mechanisms regulating nodulation factor(NF)receptor(NFR)-mediated perception of NFs to establish symbiosis remain *** this study,we unveil the pivotal role of the NFR-interacting RING-type E3 ligase 1(NIRE1)in regulating NFR1/NFR5 homeostasis to optimize rhizobial infection and nodule development in Lotus *** demonstrated that NiRE1 has a dual function in this regulatory *** associates with both NFR1 and NFR5,facilitating their degradation through K48-linked polyubiquitination before rhizobial ***,following rhizobial inoculation,NFR1 phosphorylates NIRE1ata conserved residue,Tyr-109,inducing a functional switch in NIRE1,which enables NIRE1tomediateK63-linkedpolyubiquitination,thereby stabilizing NFR1/NFR5 in infected root *** introduction of phospho-dead NIRE1Y1osF leads to delayed nodule development,underscoring the significance of phosphorylation at Tyr-1o9 in orchestrating symbiotic ***,expression of the phospho-mimic NIRE1Y0E results in the formation of spontaneous nodules in ***,further emphasizing the critical role of the phosphorylation-dependent functional switch in *** summary,these findings uncover a fine-tuned symbiotic mechanism that a single E3 ligase could undergo a phosphorylationdependent functional switch to dynamically and precisely regulate NF receptor protein levels.

关键词： nodule symbiosis nodulation factor receptors E3 ligase ubiquitination phosphorylation protein degradation protein stabilization Lotus japonicus

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NODULATION TRIO in Medicago truncatula:Unveiling the redundant roles of MtLYK2.MtLYK3,and MtLYK2.is

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Journal of Integrative Plant Biology 2024年第8期66卷 1553-1556页

作者： Yaohua Li Yanwen Zhao Ziang Yan Ru Dong Haixiang Yu Hui Zhu Yangrong Cao national key Lab of {2. microbiology Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhan 430070China

The legume–rhizobial symbiosis is a distinctive model in plant–microbe *** being foreign invaders,rhizobia are acknowledged as“friends”by compatible host plants,leading to mutualistic endosymbiosis(Cao et al.,2.17).

关键词： mutual spite redundant

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Selenium-oxidizing Agrobacterium sp.T3F4 decreases arsenic uptake by Brassica rapa *** a native polluted soil

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Journal of Environmental Sciences 2024年第4期138卷 506-515页

作者： Lijin An Chunzhi Zhou Lipeng Zhao Ao Wei Yiting Wang Huimin Cui Shixue Zheng State key laboratory of {2. microbiology College of Life Science and TechnologyHuazhong Agricultural UniversityWuhan 430070China

Toxic arsenic(As)and trace element selenium(Se)are transformed by microorganisms but their complex interactions in soil-plant systems have not been fully *** Asand Se-oxidizing bacterium,Agrobacterium sp.T3F4,was applied to a native seleniferous As-polluted soil to investigate As/Se uptake by the vegetable Brassica rapa *** As-Se interaction as mediated by strain *** Se content in the aboveground plants was significantly enhanced by 34.1%,but the As content was significantly decreased by 2..5% in the T3F4-inoculated pot culture compared to the control(P<0.05).Similar result was shown in treatment with additional 5 mg/kg of Se(IV)in *** addition,the As contents in roots were significantly decreased by more than 35% under T3F4 or Se(IV)treatments(P<0.05).Analysis of As-Se-bacterium interaction in a soil simulation experiment showed that the bioavailability of Se significantly increased and As was immobilized with the addition of the T3F4strain(P<0.05).Furthermore,an As/Se co-exposure hydroponic experiment demonstrated that As uptake and accumulation in plants was reduced by increasing Se(IV)*** 50% growth inhibition concentration(IC50)values for As in plants were increased about one-fold and two-fold under co-exposure with 5 and 10μmol/L Se(IV),*** conclusion,strain T3F4 improves Se uptake but decreases As uptake by plants via oxidation of As and Se,resulting in decrease of soil As bioavailability and As/Se competitive absorption by *** provides a potential bioremediation strategy for Se biofortification and As immobilization in As-polluted soil.

关键词： Selenium oxidation Selenium biofortification Arsenite-oxidizing bacteria Arsenic immobilization Brassica rapa L

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The MYB transcription factor OsMYBxoc1 regulates resistance to Xoc by directly repressing transcription of the iron transport gene OsNRAMP5 in rice

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Plant Communications 2024年第6期5卷 230-245页

作者： Haimiao Zhang Baolong Sun Wei Wu Yang Li Ziyi Yin Chongchong Lu Haipeng Zhao Lingguang Kong Xinhua Ding State key laboratory of Crop Biology Shandong Provincial Key Laboratory of Agricultural MicrobiologyCollege of Plant ProtectionShandong Agricultural UniversityTai’an 271018China

Bacterial leaf streak caused by Xanthomonas oryzae ***(Xoc)is a continuous threat to rice cultivation,leading to substantial yield losses with socioeconomic *** ions are essential mineral nutrients for plant growth,but little information is available on how they influence mechanisms of rice immunity against ***,we investigated the role of the myeloblastosis-related(MYB)transcriptional repressor OsMYBxoc1 in modulation of rice resistance through control of iron ion *** of OsMYBxoc1 significantly increased rice resistance,whereas OsMYBxoc1 RNA-interference lines and knockout mutants showed the opposite *** of OsMYBxoc1 expression dampened the immune response induced by pathogen-associated molecular *** demonstrated that OsMYBxoc1 binds specifically to the OsNRAMP5 promoter and represses transcription of ***5,a negative regulator of rice resistance to bacterial leaf streak,possesses metal ion transport activity,and inhibition of OsMYBxoc1 expression increased the iron ion content in *** of the iondependent H2.2.scavenging enzyme catalase was increased in plants with suppressed expression of OsMYBxoc1 or overexpression of *** found that iron ions promoted Xoc infection and interfered with the production of reactive oxygen species induced by *** type Ⅲ effector XopAK directly inhibited OsMYBxoc1 transcription,indicating that the pathogen may promote its own proliferation by relieving restriction of iron ion transport in *** addition,iron complemented the pathogenicity defects of the RS105_DXopAK mutant strain,further confirming that iron utilization by Xoc may be dependent upon *** conclusion,our study reveals a novel mechanism by which OsMYBxoc1 modulates rice resistance by regulating iron accumulation and demonstrates that Xoc can accumulate iron ions by secreting the effector XopAK to promote its own infection.

关键词： pathogen effector plant immunity bacterial leaf streak metal ion

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Slicing capacity-centered mode selection and resource optimization for network-assisted full-duplex cell-free distributed massive MIMO systems

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Science China(Information Sciences) 2024年第1期67卷 203-220页

作者： Jie WANG Jiamin LI Pengcheng ZHU Dongming WANG Hongbiao ZHANG Yue HAO Bin SHENG national Mobile Communications Research laboratory Southeast University 2. Purple Mountain Laboratories China Mobile Research Institute

Network-assisted full-duplex(NAFD) cell-free distributed massive multiple-input multipleoutput(MIMO) systems enable uplink(UL) and downlink(DL) communications within the same timefrequency resources,which potentially reduce latency by avoiding the overhead of switching UL/DL ***,how to choose UL/DL modes remains an important factor affecting system *** the dramatic increase in the number of users and access points(APs),massive access brings significant overhead in the mode ***,the different quality of service(QoS) among users also makes the effective utilization of resources *** one of the most promising technologies in sixth-generation(6G),network slicing enables the adaptive configuration of limited UL/DL resources through the resource isolation assisted NAFD ***,we propose a slicing capacity-centered *** this scheme,APs are motivated by slicing requirements and associated slices to form different *** mode selection and resource allocation are performed within each subsystem to reduce overhead and improve resource *** implement this scheme efficiently,a double-layer deep reinforcement learning(DRL)mechanism is used to realize the joint optimization of mode selection and resource *** results show that the slicing capacity-centered scheme can effectively improve resource utilization and reduce overhead.

关键词： network-assisted full-duplex network slicing mode selection resource optimization deep reinforcement learning

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Integrated application of synthetic community reduces consumption of herbicide in field Phalaris minor control

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Soil Ecology Letters 2024年第2期6卷 125-136页

作者： Amina Hadayat Zahir Ahmad Zahir Peng Cai Chun-Hui Gao national key {2. of agricultural microbiology College of Resources and EnvironmentHuazhong Agricultural UniversityWuhan430070China Soil microbiology and Biochemistry laboratory Institute of Soil and Environmental SciencesUniversity of AgricultureFaisalabadPakistan

Herbicide-based weeds control impacts wheat crops as *** of Pseudomonas strains reduce the need for high-dose herbicides.100%Axial provides less weed control compared to 75%Axial with C4 *** 75%with C4 SynCom promotes... 详细信息

关键词： weed control synthetic microbial communities Phalaris minor wheat growth promotion synergistic effect

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N-Heterocyclic carbene-catalyzed enantioselective(dynamic) kinetic resolutions and desymmetrizations

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Science China Chemistry 2024年第2期67卷 482-511页

作者： Yi Zhang Hui Cai Xiuhai Gan Zhichao Jin national key {2. of Green Pesticide Key Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of EducationGuizhou UniversityHuaxi DistrictGuiyang550025China

N-heterocyclic carbene-catalyzed enantioselective kinetic resolutions,dynamic kinetic resolutions,and desymmetrization reactions are systematically *** content is organized according to the activation modes involved i... 详细信息

关键词： N-heterocyclic carbene kinetic resolution dynamic kinetic resolution desymmetrization organocatalysis

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Modulation of starch synthesis in Arabidopsis via phytochrome B-mediated light signal transduction

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Journal of Integrative Plant Biology 2024年第5期66卷 973-985页

作者： Qingbiao Shi Ying Xia Na Xue Qibin Wang Qing Tao Mingjing Li Di Xu Xiaofei Wang Fanying Kong Haisen Zhang Gang Li national key {2. of Wheat Improvement College of Life SciencesShandong Agricultural UniversityTai'an 271018China national key {2. of Wheat Improvement College of AgronomyShandong Agricultural UniversityTai'an 271018China

Starch is a major storage carbohydrate in plants and is critical in crop yield and *** synthesis is intricately regulated by internal metabolic processes and external environmental cues;however,the precise molecular mechanisms governing this process remain largely *** this study,we revealed that high red to far-red(high R:FR)light significantly induces the synthesis of leaf starch and the expression of synthesis-related genes,whereas low R:FR light suppress these *** phytochrome B(phyB),the primary R and FR photoreceptor,was identified as a critical positive regulator in this *** of phyB,basic leucine zipper transcription factor ELONGATED HYPOCOTYL5(HY5)was found to enhance starch synthesis,whereas the basic helix-loop-helix transcription factors PHYTOCHROME INTERACTING FACTORs(PIF3,PIF4,and PIF5)inhibit starch synthesis in Arabidopsis ***,HY5 and PIFs directly compete for binding to a shared G-box cis-element in the promoter region of genes encoding starch synthases GBSS,SS3,and SS4,which leads to antagonistic regulation of their expression and,consequently,starch *** findings highlight the vital role of phyB in enhancing starch synthesis by stabilizing HY5 and facilitating PIFs degradation under high R:FR light ***,under low R:FR light,PIFs predominantly inhibit starch *** study provides insight into the physiological and molecular functions of phyB and its downstream transcription factors HY5 and PIFs in starch synthesis regulation,shedding light on the regulatory mechanism by which plants synchronize dynamic light signals with metabolic cues to module starch synthesis.

关键词： Arabidopsis thaliana HY5 light signal phyB PIFs starch synthesis

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High-quality Gossypium hirsutum and Gossypium barbadense genome assemblies reveal the landscape and evolution of centromeres

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Plant Communications 2024年第2期5卷 135-150页

作者： Xing Chang Xin He Jianying Li Zhenping Liu Ruizhen Pi Xuanxuan Luo Ruipeng Wang Xiubao Hu Sifan Lu Xianlong Zhang Maojun Wang national key {2. of Crop Genetic Improvement Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhanChina

Centromere positioning and organization are crucial for genome evolution;however,research on centro-mere biology is largely influenced by the quality of available genome ***,we combined Oxford Nanopore and Pacific Biosciences technologies to de novo assemble two high-quality reference genomes for Gossypium hirsutum(TM-1)and Gossypium barbadense(3-79).Compared with previously published reference genomes,our assemblies show substantial improvements,with the contig N50 improved by 4.6-fold and 5.6-fold,respectively,and thus represent the most complete cotton genomes to *** high-quality reference genomes enable us to characterize 14 and 5 complete centromeric regions for *** and ***,*** data revealed that the centromeres of allotetraploid cotton are occupied by members of the centromeric repeat for maize(CRM)and Tekay long terminal repeat families,and the CRM family reshapes the centromere structure of the At subgenome after *** two intertwined families have driven the convergent evolution of centromeres between the two subgenomes,ensuring centromere function and genome *** addition,the reposi-tioning and high sequence divergence of centromeres between *** and *** have contributed to speciation and centromere *** study sheds light on centromere evolution in a sig-nificant crop and provides an alternative approach for exploring the evolution of polyploid plants.

关键词： genome assembly centromere architecture convergent evolution polyploidization

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A pan-TE map highlights transposable elements underlying domestication and agronomic traits in Asian rice

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national Science Review 2024年第6期11卷 105-118页

作者： Xiaoxia Li Xiaofan Dai Huiying He Yang Lv Longbo Yang Wenchuang He Congcong Liu Hua Wei Xiangpei Liu Qiaoling Yuan Xianmeng Wang Tianyi Wang Bintao Zhang Hong Zhang Wu Chen Yue Leng Xiaoman Yu Hongge Qian Bin Zhang Mingliang Guo Zhipeng Zhang Chuanlin Shi Qianqian Zhang Yan Cui Qiang Xu Xinglan Cao Dandan Chen Yongfeng Zhou Qian Qian Lianguang Shang Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural Sciences Rice Research Institute Shenyang Agricultural University Yazhouwan national laboratory State key laboratory of Rice Biology China National Rice Research Institute national key {2. of Tropical Crop Breeding Tropical Crops Genetic Resources InstituteChinese Academy of Tropical Agricultural Sciences

Transposable elements(TEs) are ubiquitous genomic components and hard to study due to being highly repetitive. Here we assembled 2.2.chromosome-level genomes based on long-read sequencing *** the 2.2.genomes with 15 existing assemblies, we developed a pan-TE map comprising both cultivated and wild Asian rice. We detected 177 084 high-quality TE variations and inferred their derived state using outgroups. We found TEs were one source of phenotypic variation during rice domestication and differentiation. We identified 12.6 genes whose expression variation was associated with TEs but not single-nucleotide polymorphisms(SNPs), such as Os Rboh B, and validated Os Rboh B's relative expression activity using a dual-Luciferase(LUC) reporter assays system. Our pan-TE map allowed us to detect multiple novel loci associated with agronomic traits. Collectively, our findings highlight the contributions of TEs to domestication, differentiation and agronomic traits in rice, and there is massive potential for gene cloning and molecular breeding by the high-quality Asian pan-TE map we generated.

关键词： transposable element super pan-genome pan-TE rice

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