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Staying hungry:a roadmap to harnessing central regulators of symbiotic nitrogen fixation under fluctuating nitrogen availability

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aBIOTECH 2024年第1期5卷 107-113页

作者： Lijin Qiao Jieshun Lin Takuya Suzaki Pengbo Liang State Key Laboratory of Plant Environmental Resilience College of Biological SciencesChina Agricultural UniversityBeijingChina MOA Key Laboratory of Soil Microbiology Rhizobium Research CenterChina Agricultural UniversityBeijingChina Department of Molecular Biology and Genetics Aarhus UniversityAarhusDenmark Faculty of Life and Environmental Sciences University of TsukubaTsukubaIbarakiJapan Tsukuba Plant-Innovation Research Center University of TsukubaTsukubaIbarakiJapan

Legumes have evolved specific inventions to enhance nitrogen(N)acquisition by establishing symbiotic interactions with N-fixing rhizobial *** symbiotic N fixation is energetically costly,legumes have developed sophisticated mechanisms to ensure carbon-nitrogen balance,in a variable environment,both locally and at the whole plant level,by monitoring nodule number,nodule development,and nodular nitrogenase activity,as well as controlling nodule *** of the autoregulation of nodulation and regulation of nodulation by nodule inception(NIN)and NIN-LIKE PROTEINs(NLPs)have provided great insights into the genetic mechanisms underlying the nitrateinduced regulation of root nodulation for adapting to N availability in the ***,many aspects of N-induced pleiotropic regulation remain to be fully explained,such as N-triggered senescence in mature *** et *** that this process is governed by a transcriptional network regulated by NAC-type transcription *** and dissection of these soybean nitrogenassociated NAPs(SNAPs)transcription factor-mastered networks have yielded a roadmap for exploring how legumes rewire nodule functions across a range of N levels,laying the foundation for enhancing the growth of N-deprived crops in agricultural settings.

关键词： symbiotic nitrogen fixation N-adapted nodulation Nodule senescence NIN NLPs SNAPs

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Coordinated responses of leaf and nodule traits contribute to the accumulation of N in relay intercropped soybean

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Journal of Integrative Agriculture 2024年第6期23卷 1910-1928页

作者： Ping Chen Qing Du Benchuan Zheng Huan Yang Zhidan Fu Kai Luo Ping Lin Yilin Li Tian Pu Taiwen Yong Wenyu Yang College of Agronomy Sichuan Agricultural University/Sichuan Engineering Research Center for Crop Strip Intercropping System/Key Laboratory of Crop Ecophysiology and Farming System in SouthwestMinistry of Agriculture and Rural AffairsChengdu 611130China Crop Research Institute Sichuan Academy of Agricultural SciencesChengdu 610066China

Maize(Zea mays L.)-soybean(Glycine max ***.)relay intercropping provides a way to enhance land ***,the late-planted soybean suffers from shading by the *** maize harvest,how the recovery growth influences the leaf and nodule traits remains unclear.A three-year field experiment was conducted to evaluate the effects of genotypes,i.e.,supernodulating(nts1007),Nandou 12(ND12),and Guixia 3(GX3),and crop configurations,i.e.,the interspecific row spacing of 45(I45),60(I60),75 cm(I75),and sole soybean(SS),on soybean recovery growth and N *** results showed that intercropping reduced the soybean total leaf area(LA)by reducing both the leaf number(LN)and unit leaflet area(LUA),and it reduced the nodule dry weight(NW)by reducing both the nodule number(NN)and nodule diameter(ND)compared with the *** correlation and principal component analysis(PCA)indicated a co-variability of the leaf and nodule traits in response to the genotype and crop configuration *** the recovery growth stages,the compensatory growth promoted soybean growth to reduce the gaps of leaf and nodule traits between intercropping and *** relative growth rates of ureide(RGR_U)and nitrogen(RGR_N)accumulation were higher in intercropping than in *** achieved more significant sucrose and starch contents compared with ***12 and GX3 showed more robust compensatory growth than nts1007 in *** the recovery growth of relay intercropping soybean improved biomass and nitrogen accumulation,ND12 gained a more significant partial land equivalent ratio(pLER)than *** I60 treatment achieved more robust compensation effects on biomass and N accumulation than the other ***,I60 showed a higher nodule sucrose content and greater shoot ureide and N accumulation than ***,intercropping ND12 with maize using an interspecific row spacing of 60 cm was optimal for both yield advantage and N accumulation.

关键词： relay intercropping genotype crop configuration symbiotic nitrogen fixation soybean nodule

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Mechanisms underlying key agronomic traits and implications for molecular breeding in soybean

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Journal of Genetics and Genomics 2024年第4期51卷 379-393页

作者： Chao Fang Haiping Du Lingshuang Wang Baohui Liu Fanjiang Kong Guangdong Key Laboratory of Plant Adaptation and Molecular Design Guangzhou Key Laboratory of Crop Gene EditingInnovative Center of Molecular Genetics and EvolutionSchool of Life SciencesGuangzhou UniversityGuangzhouGuangdong 510006China

Soybean(Glycine max[L.]Merr.)is an important crop that provides protein and vegetable oil for human *** soybean is a photoperiod-sensitive crop,its cultivation and yield are limited by the photoperiodic conditions in the *** contrast to other major crops,soybean has a special plant architecture and a special symbiotic nitrogen fixation system,representing two unique breeding ***,flowering time,plant architecture,and symbiotic nitrogen fixation are three critical or unique yielddetermining *** review summarizes the progress made in our understanding of these three critical yield-determining factors in ***,we propose potential research directions to increase soybean production,discuss the application of genomics and genomic-assisted breeding,and explore research directions to address future challenges,particularly those posed by global climate changes.

关键词： Soybean Grain yield Flowering time Plant architecture Nodulation symbiotic nitrogen fixation Genome study

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Increased dependence on nitrogen-fixation of a native legume in competition with an invasive plant

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Plant Diversity 2024年第4期46卷 510-518页

作者： Meixu Han Haiyang Zhang Mingchao Liu Jinqi Tang Xiaocheng Guo Weizheng Ren Yong Zhao Qingpei Yang Binglin Guo Qinwen Han Yulong Feng Zhipei Feng Honghui Wu Xitian Yang Deliang Kong College of Forestry Henan Agricultural UniversityZhengzhou 450002China College of Life Science Hebei UniversityBaoding 071002China Liaoning Key Laboratory for Biological Invasions and Global Changes College of Bioscience and BiotechnologyShenyang Agricultural UniversityShenyangLiaoning 110866China College of Horticulture China Agricultural UniversityBeijing 100193China State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China Institute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 100081China Key Laboratory of Arable Land Quality Monitoring and Evaluation Ministry of Agriculture and Rural AffairsInstitute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 100081China

Suppression of roots and/or their symbiotic microorganisms,such as mycorrhizal fungi and rhizobia,is an effective way for alien plants to outcompete native ***,little is known about how invasive and native plants interact with the quantity and activity of nutrient-acquisition *** a pot experiment was conducted with monoculture and mixed plantings of an invasive plant,Xanthium strumarium,and a common native legume,Glycine *** measured traits related to root and nodule quantity and activity and mycorrhizal *** to the monoculture,fine root quantity(biomass,surface area)and activity(root nitrogen(N)concentration,acid phosphatase activity)of *** decreased in mixed plantings;nodule quantity(biomass)decreased by 45%,while nodule activity in Nfixing via rhizobium increased by 106%;mycorrhizal colonization was *** of N fixation to leaf N content in *** increased in the mixed plantings,and this increase was attributed to a decrease in the rhizosphere soil N of *** in the mixed *** root quantity and activity,along with a higher mycorrhizal association was observed in *** in the mixed compared to ***,the invasive plant did not directly scavenge N from nodule-fixed N,but rather depleted the rhizosphere soil N of the legume,thereby stimulating the activity of N-fixation and increasing the dependence of the native legume on this N *** quantity-activity framework holds promise for future studies on how native legumes respond to alien plant invasions.

关键词： Mycorrhizal strategy nitrogen depletion Plant invasion Root nutrient acquisition strategy symbiotic nitrogen fixation

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Quantitative proteomics reveals key pathways in the symbiotic interface and the likely extracellular property of soybean symbiosome

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Journal of Genetics and Genomics 2023年第1期50卷 7-19页

作者： Yu Luo Wei Liu Juan Sun Zheng-Rong Zhang Wei-Cai Yang The State Key Laboratory for Molecular Developmental Biology Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China College of Advanced Agricultural Sciences University of Chinese Academy of SciencesBeijing 100049China

An effective symbiosis between legumes and rhizobia relies largely on diverse proteins at the plantrhizobium interface for material transportation and signal transduction during symbiotic nitrogen ***,we report a comprehensive proteome atlas of the soybean symbiosome membrane(SM),peribacteroid space(PBS),and root microsomal fraction(RMF)using state-of-the-art label-free quantitative proteomic *** total,1759 soybean proteins with diverse functions are detected in the SM,and 1476 soybean proteins and 369 rhizobial proteins are detected in the *** diversity of SM proteins detected suggests multiple origins of the *** comparative analysis highlights amino acid metabolism and nutrient uptake in the SM,indicative of the key pathways in nitrogen *** detection of soybean secretory proteins in the PBS and receptor-like kinases in the SM provides evidence for the likely extracellular property of the symbiosome and the potential signaling communication between both symbionts at the symbiotic *** proteomic data provide clues for how some of the sophisticated regulation between soybean and rhizobium at the symbiotic interface is achieved,and suggest approaches for symbiosis engineering.

关键词： Quantitative proteomics symbiotic nitrogen fixation Symbiosome membrane Peribacteroid space Soybean

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Differentiation trajectories and biofunctions of symbiotic and un-symbiotic fate cells in root nodules of Medicago truncatula

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Molecular Plant 2022年第12期15卷 1852-1867页

作者： Qinyi Ye Fugui Zhu Fanghao Sun Tai-Cheng Wang Jiale Wu Peng Liu Chen Shen Jiangli Dong Tao Wang State Key Laboratory of Agrobiotechnology College of Biological SciencesChina Agricultural UniversityBeijing 100193China College of Grassland Science and Technology China Agricultural UniversityBeijing 100193China

The root nodule is a complex symbiotic nitrogen fixation factory,in which cells are highly ***,the differentiation trajectories and interconnection of nodule cells remain largely *** this study,we set up a modified protocol for nodule protoplast preparation and performed a single-cell RNA sequencing profiling of the indeterminate Medicago truncatula *** designated 13 cell clusters with specific expression patterns in 14-day post inoculation nodules and constructed a spatial and functional cellular map based on experimental data and bioinformatic *** analysis further revealed that two groups of apical meristematic cells develop into symbiotic and un-symbiotic fate cells along their particular *** analysis of each cell cluster revealed their particularity and interrelation,especially that the un-infected cells in nitrogen fixation zone are also involved in nitrogen assimilation by undertaking the asparagine ***,our data offer an important resource for investigating the mechanism of nodule organogenesis and symbiotic nitrogen fixation.

关键词： single-cell RNA sequencing scRNA-seq nodule organogenesis symbiotic nitrogen fixation indeterminate nodule legume plant

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The life and work of Dr. Fan Qingsheng： a pioneer in antibiotics research, agricultural microbiology, systems agriculture, and agricultural education in China

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Protein & Cell 2017年第8期8卷 551-557页

作者： Jianping Xu Department of Biology McMaster University Hamilton ON L8S 4K1 Canada

Microbes are everywhere in the Earth＇s biosphere-they play crucial roles in agriculture, nutrient cycling, environmental protection, and animal and human health. However, despite the importance of microbes throughout... 详细信息

关键词： Biological nitrogen fixation symbiotic nitrogen fixation Soil Microbiology Medicinal Mushroom Mushroom Production

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