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植物磷饥饿信号分子调控网络及磷高效遗传改良

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中国科学：生命科学 2024年第5期54卷 866-882页

作者：张倩倩任剑豪张宇昕郭美娜易可可阮文渊北京林业大学生物科学与技术学院林木育种与生态修复国家工程研究中心北京100083 中国农业科学院农业资源与农业区划研究所北方干旱半干旱耕地高效利用全国重点实验室农业部植物营养与肥料重点实验室北京100081

磷是植物生长发育所必需的大量营养元素,也是不可再生资源,其在土壤中易固定、移动慢的特点导致多数农田磷的生物有效性较低,严重影响了作物的产量和品质.农业生产中主要通过额外施加磷肥的方式来解决大部分土壤磷有效性低的问题.但是,... 详细信息

磷是植物生长发育所必需的大量营养元素,也是不可再生资源,其在土壤中易固定、移动慢的特点导致多数农田磷的生物有效性较低,严重影响了作物的产量和品质.农业生产中主要通过额外施加磷肥的方式来解决大部分土壤磷有效性低的问题.但是,鉴于磷在土壤中的理化特性,磷肥施入土壤后约85%~90%会变成植物难以利用的磷形态.土壤中大量磷肥的滞留不仅造成磷矿资源的浪费,还加剧了土壤地力的衰退,引起水体富营养化等环境问题.因此,如何从作物自身出发,充分挖掘和提升作物吸收利用磷养分的生物学潜力,减少磷肥施用是植物营养领域研究的热点和难点.本文综述了近年来植物磷饥饿信号调控及磷高效作物遗传改良的研究进展,对未来磷养分研究的关键点进行了展望,并提出了潜在的作物磷高效遗传改良模式.

关键词：磷磷饥饿信号磷平衡调控网络遗传改良作物土壤

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The origin and evolution of salicylic acid signaling and biosynthesis in plants

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Molecular Plant 2023年第1期16卷 245-259页

作者： Xianqing Jia Long Wang Hongyu Zhao yibo Zhang Zhixiang Chen Lei Xu keke yi Key Laboratory of Plant Nutrition and Fertilizer Ministry of Agriculture and Rural AffairsInstitute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 100081China Department of Botany and Plant Pathology Center for Plant BiologyPurdue UniversityWest LafayetteIN 47907-2054USA

Salicylic acid(SA)plays a pivotal role in plant response to biotic and abiotic *** core SA signaling regulators and key proteins in SA biosynthesis have been well ***,much remains unknown about the origin,evolution,and early diversification of core elements in plant SA signaling and *** this study,we identified 10 core protein families in SA signaling and biosynthesis across green plant *** found that the key SA signaling receptors,the nonexpresser of pathogenesis-related(NPR)proteins,originated in the most recent common ancestor(MRCA)of land plants and formed divergent groups in the ancestor of seed ***,key transcription factors for SA signaling,TGACG motif-binding proteins(TGAs),originated in the MRCA of streptophytes,arguing for the stepwise evolution of core SA signaling in *** from the assembly of the core SA signaling pathway in the ancestor of seed plants,SA exists extensively in green plants,including chlorophytes and streptophyte ***,the full isochorismate synthase(ICS)-based SA synthesis pathway was first assembled in the MRCA of land *** further revealed that the ancient abnormal inflorescence meristem 1(AIM1)-basedβ-oxidation pathway is crucial for the biosynthesis of SA in chlorophyte algae,and this biosynthesis pathway may have facilitated the adaptation of early-diverging green algae to the high-light-intensity environment on *** together,our findings provide significant insights into the early evolution and diversification of plant SA signaling and biosynthesis pathways,highlighting a crucial role of SA in stress tolerance during plant terrestrialization.

关键词： salicylic acid SA signaling SA biosynthesis plant evolution high irradiance

NIGT1 represses plant growth and mitigates phosphate starvation signaling to balance the growth response tradeoff in rice

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Journal of Integrative Plant Biology 2023年第8期65卷 1874-1889页

作者： Yuxin Zhang Qianqian Zhang Meina Guo Xueqing Wang Tianjie Li Qingyu Wu Lihui Li keke yi Wenyuan Ruan National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences Beijing 100081China State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China/Key Laboratory of Plant Nutrition and Fertilizer Ministry of AgricultureInstitute of Agricultural Resources and Regional PlanningBeijing 100081China National Engineering Research Center of Tree Breeding and Ecological Restoration College of Biological Sciences and TechnologyBeijing 100083China

Inorganic phosphate(Pi)availability is an important factor which affects the growth and yield of crops,thus an appropriate and effective response to Pi fluctuation is ***,how crops orchestrate Pi signaling and growth under Pi starvation conditions to optimize the growth defense tradeoff remains *** we show that a Pi starvationinduced transcription factor NIGT1(NITRATE-INDUCIBLE GARP-TYPE TRANSCRIPTIONAL REPRESSOR 1)controls plant growth and prevents a hyper-response to Pi starvation by directly repressing the expression of growth-related and Pisignaling genes to achieve a balance between growth and response under a varying Pi ***1 directly binds to the promoters of Pi starvation signaling marker genes,like IPS1,mi R827,and SPX2,under Pi-deficient conditions to mitigate the Pi-starvation responsive(PSR).It also directly represses the expression of vacuolar Pi efflux transporter genes VPE1/2 to regulate plant Pi *** further demonstrate that NIGT1 constrains shoot growth by repressing the expression of growth-related regulatory genes,including brassinolide signal transduction master regulator BZR1,cell division regulator CYCB1;1,and DNA replication regulator *** findings reveal the function of NIGT1 in orchestrating plant growth and Pi starvation signaling,and also provide evidence that NIGT1 acts as a safeguard to avoid hyper-response during Pi starvation stress in rice.

关键词： NIGT1 phosphate(Pi) PHRs Pi-starvation responsive(PSR) Pi starvation Pi signaling

A reciprocal inhibitory module for Pi and iron signaling

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Molecular Plant 2022年第1期15卷 138-150页

作者： Meina Guo Wenyuan Ruan yibo Zhang Yuxin Zhang Xueqing Wang Zhenhui Guo Long Wang Tian Zhou Javier Paz-Ares keke yi Key Laboratory of Plant Nutrition and Fertilizer Ministry of AgricultureInstitute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 100081China Department of Plant Molecular Genetics Centro Nacional de Biotecnología-Consejo Superior de Investigaciones Cientificas28049 MadridSpain

Phosphorous(P)and iron(Fe),two essential nutrients for plant growth and development,are highly abundant elements in the earth's crust but often display low availability to *** to the ability to form insoluble complexes,the antagonistic interaction between P and Fe nutrition in plants has been noticed for ***,the underlying molecular mechanism modulating the signaling and homeostasis between them re-mains ***,we show that the possible iron sensors HRZs,the iron deficiency-induced E3 ligases,could interact with the central regulator of phosphate(Pi)signaling,PHR2,and prompt its ubiquitination at lysine residues K319 and K328,leading to its degradation in *** with this,the hrzs mutants dis-played a high Pi accumulation ***,we found that iron deficiency could attenuate Pi star-vation signaling by inducing the expression of HRZs,which in turn trigger PHR2 protein ***-estingly,on the other hand,rice PHRs could negatively regulate the expression of HRZs to modulate iron deficiency ***,PHR2 and HRZs form a reciprocal inhibitory module to coordinate Pi and iron signaling and homeostasis in *** together,our results uncover a molecular link between Pi and iron master regulators,which fine-tunes plant adaptation to Pi and iron availability in rice.

关键词： Phosphate(Pi) Iron(Fe) PHRs HRZs Pi/Fe signaling and homeostasis

Unloading phosphate for starch synthesis in cereal grains

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Molecular Plant 2021年第8期14卷 1232-1233页

作者： Lei Xu keke yi Key Laboratory of Plarft Nutrition and Fertilizers Ministry of Agriculture and Rural AffairsInstitute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 100081China

The macronutrient phosphorus(P)is essential for plant growth and of vital importance to crop *** is taken up from the soil in the form of inorganic orthophosphate[PO_(4)^(3-),HPO_(4)^(2-),H_(2)PO_(4)^(-)(Pi)]by plant *** Pi readily forms insoluble complexes and precipitates with organic matter and mineral cations,Pi bioavailability in the soil is usually low and often limits crop growth and final yield.

关键词： synthesis roots readily

A molecular framework underlying low-nitrogeninduced early leaf senescence in Arabidopsis thaliana

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Molecular Plant 2023年第4期16卷 756-774页

作者： Hongmei Fan Shuxuan Quan Qing Ye Lei Zhang Wei Liu Ning Zhu Xiaoqi Zhang Wenyuan Ruan keke yi Nigel M.Crawford Yong Wang State Key Laboratory of Crop Biology College of Life SciencesShandong Agricultural UniversityTai'anShandong 271018China Key Laboratory of Plant Nutrition and Fertilizer Ministry of AgricultureInstitute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 10081China Section of Cell and Developmental Biology Division of Biological ScienceUniversity of California at San DiegoLa JollaCA 92093-0116USA

Nitrogen(N)deficiency causes early leaf senescence,resulting in accelerated whole-plant maturation and severely reduced crop ***,the molecular mechanisms underlying N-deficiency-induced early leaf senescence remain unclear,even in the model species Arabidopsis *** this study,we identified Growth,Development and Splicing 1(GDS1),a previously reported transcription factor,as a new regulator of nitrate(NO3)signaling by a yeast-one-hybrid screen using a NO3enhancer fragment from the promoter of *** showed that GDS1 promotes NO3 signaling,absorption and assimilation by affecting the expression of multiple NO3 regulatory genes,including Nitrate Regulatory Gene2(NRG2).Interestingly,we observedthat gds1mutants show early leaf senescence as well as reduced NO3-contentand Nuptake under N-deficient *** analyses indicated that GDS1 binds to the promoters of several senescence-related genes,including Phytochrome-lnteracting Transcription Factors 4 and 5(PIF4 and PIF5)and represses their ***,we found that N deficiency decreases GDS1 protein accumulation,and GDS1 could interact with Anaphase Promoting Complex Subunit 10(APC10).Genetic and biochemical experiments demonstrated that Anaphase Promoting Complex or Cyclosome(APC/C)promotes the ubiquitination and degradation of GDS1 under N deficiency,resulting in loss of PIF4 and PiF5 repression and consequent early leaf ***,we discovered that overexpression of GDS1 could delay leaf senescence and improve seed yield and N-use efficiency(NUE)in *** summary,our study uncovers a molecular framework illustrating a new mechanism underlying low-N-induced early leaf senescence and provides potential targets for genetic improvement of crop varieties with increased yield and NUE.

关键词： nitrate signaling GDS1 nitrogen-deficiency-induced leaf senescence PIF4/PIF5 APC/C ubiquitina-tion NUE

SENEX-mediated CDK4/6 inhibition promotes senescence and confers apoptosis resistance in B-cell non-Hodgkin lymphoma

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BIOCELL 2024年第3期48卷 453-462页

作者： JIYU WANG LIUyiNG yi keke HUANG YANGYANG WANG HUIPING WANG ZHIMIN ZHAI Department of Hematology The Second Affiliated Hospital of Anhui Medical UniversityHefei230601China Department of Hematology The Fourth Affiliated HospitalZhejiang University School of MedicineYiwu322000China

Background:The primary cause of treatment failure in patients with refractory or relapsed B-cell non-Hodgkin lymphoma(r/r B-NHL)is resistance to current therapies,and therapy-induced senescence(TIS)stands out as a crucial mechanism contributing to tumor drug ***,we analyzed SENEX/Rho GTPase Activating Protein 18(ARHGAP18)expression and prognostic signiﬁcance in doxorubicin-induced B-NHL-TIS model and r/r B-NHL patients,investigating its target in B-NHL cell senescence and the effect of combining speciﬁc inhibitors on apoptosis resistance in B-NHL-TIS ***:Raji cells were transfected with the human SENEX shRNA recombinant lentiviral vector(Sh-SENEX)and the empty vector negative(NC)to construct a stable transfection cell line with knockdown of *** of SENEX-silencing on B-NHL-TIS formation,cell function and cell cycle-related pathways was *** doxorubicin(DOX)-inducible senescent B-NHL cells combined with the speciﬁc cyclin dependent kinase 4/6(CDK4/6)inhibitor Palbociclib to observe that blocking CDK4/6 effects on TIS *** expression of 21 B-NHL patients and 8 healthy controls were analyzed by qRT-PCR,and the correlation between its expression and clinical indicators were ***:The downregulation of SENEX expression promotes G1-S phase transition and apoptosis while inhibiting cell proliferation,collectively suppressing the formation of TIS in *** of CDK4/6 promotes the DOX-induced G1 phase arrest to enhance TIS formation in B-NHL cells which can reverse the regulatory effect of silencing SENEX on B-NHL cell cycle regulation and *** expression levels of SENEX were notably elevated in B-NHL patients compared to healthy controls,and Elevated expression levels of SENEX were associated with poor prognosis of B-NHL ***:SENEX enhances apoptosis resistance in B-NHL by inhibiting CDK4/6,thereby preventing G1-S phase transition and promoting TIS formation.

关键词： SENEX B-cell non-Hodgkin lymphoma CDK4/6 G1-S phase transition Therapy-induced senescence Apoptosis resistance

Strain‑Induced Surface Interface Dual Polarization Constructs PML‑Cu/Bi_(12)O_(17)Br_(2) High‑Density Active Sites for CO_(2) Photoreduction

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Nano-Micro Letters 2024年第5期16卷 169-183页

作者： yi Zhang Fangyu Guo Jun Di keke Wang Molly Meng‑Jung Li Jiayu Dai Yuanbin She Jiexiang Xia Huaming Li School of Chemistry and Chemical Engineering Institute for Energy ResearchSchool of the Environment and Safety EngineeringJiangsu UniversityZhenjiang 212013People’s Republic of China State Key Laboratory Breeding Base of Green Chemistry‑Synthesis Technology College of Chemical EngineeringZhejiang University of TechnologyHangzhou 310014People’s Republic of China College of Science and Hunan Key Laboratory of Extreme Matter and ApplicationsNational University of Defense TechnologyChangsha 410073People’s Republic of China Department of Applied Physics The Hong Kong Polytechnic UniversityHung HomHong KongPeople’s Republic of China School of Chemistry and Chemical Engineering National Special Superfine Powder Engineering Research CenterNanjing University of Science and TechnologyNanjing 210094People’s Republic of China Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Zhejiang Normal UniversityJinhua 321004People’s Republic of China

The insufficient active sites and slow interfacial charge trans-fer of photocatalysts restrict the efficiency of CO_(2) *** synchronized modulation of the above key issues is demanding and ***,strain-induced strategy is developed to construct the Bi–O-bonded interface in Cu porphyrin-based monoatomic layer(PML-Cu)and Bi_(12)O_(17)Br_(2)(BOB),which triggers the surface interface dual polarization of PML-Cu/BOB(PBOB).In this multi-step polarization,the built-in electric field formed between the interfaces induces the electron transfer from con-duction band(CB)of BOB to CB of PML-Cu and suppresses its reverse ***,the surface polarization of PML-Cu further promotes the electron converge in Cu *** introduction of PML-Cu endows a high density of dispersed Cu active sites on the surface of PBOB,significantly promoting the adsorption and activation of CO_(2) and CO *** conversion rate of CO_(2) photoreduction to CO for PBOB can reach 584.3μmol g-1,which is 7.83 times higher than BOB and 20.01 times than *** work offers valuable insights into multi-step polarization regulation and active site design for catalysts.

关键词： Bi_(12)O_(17)Br_(2) Porphyrin CO_(2)photoreduction Polarization Active sites

Vacuolar phosphate transporters account for variation in phosphate accumulation in Astragalus sinicus cultivars

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The Crop Journal 2021年第1期9卷 227-237页

作者： Zhenhui Guo Wenyuan Ruan Qingyu Wu Yuhu Lyu keke yi Key Laboratory of Plant Nutrition and Fertilizer Ministry of AgricultureInstitute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 100081China Xinyang Academy of Agricultural Sciences Xinyang 464000HenanChina

Astragalus sinicus is a commonly used legume green manure that fixes atmospheric N2 and accumulates mineral nutrients and organic substances that are beneficial to soils and subsequent ***,little is known about genotypic variation in,and molecular mechanisms of,Pi(phosphate)uptake and storage in *** recorded the morphological responses of six *** cultivars from four regions of China to external Pi application and measured their Pi *** identified full-length transcripts of Pi-signaling and Pi-homeostasis regulators by sequencing and measured the expression level of these genes by *** major components in Pi signaling and Pi homeostasis were largely conserved between *** and the model species rice and *** *** varieties responded differently to low-phosphorus(P)stress,and their Pi accumulation was positively correlated with the expression of vacuolar Pi influx gene(SYG1/PHO81/XPR1-MAJOR FACILITATOR SUPERFAMILY(SPX-MFS)-TYPE PROTEIN)AsSPXMFS2 and negatively correlated with the expression of the vacuolar Pi efflux gene(VACUOLAR Pi EFFLUX TRANSPORTER)*** identified key Pi-signaling and Pihomeostasis regulators in *** expression of vacuolar Pi transporter genes could be used as an index to select *** accessions with high Pi accumulation.

关键词： Astragalus sinicus Green manure Pi accumulation Vacuolar Pi transporter