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Bringing CAM photosynthesis to the table:Paving the way for resilient and productive agricultural systems in a changing climate

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plant Communications 2024年第3期5卷 17-30页

作者： Noe´Perron Matias Kirst Sixue Chen plant molecular and cellular biology program University of FloridaGainesvilleFL 32608USA School of Forest Fisheries and Geomatics SciencesUniversity of FloridaGainesvilleFL 32603USA Department of biology University of MississippiOxfordMS 38677-1848USA

Modern agricultural systems are directly threatened by global climate change and the resulting freshwater crisis.A considerable challenge in the coming years will be to develop crops that can cope with the conse-quences of declining freshwater resources and changing *** approach to meeting this chal-lenge may lie in our understanding of plant photosynthetic adaptations and water use *** from various taxa have evolved crassulacean acid metabolism(CAM),a water-conserving adaptation of photosynthetic carbon dioxidexation that enables plants to thrive under semi-arid or seasonally drought-prone *** past research on CAM has led to a better understanding of the inner workings of plant resilience and adaptation to stress,successful introduction of this pathway into C3 or C4 plants has not been *** recent revolution in molecular,systems,and synthetic biology,as well as innovations in high-throughput data generation and mining,creates new opportunities to uncover the minimum genetic tool kit required to introduce CAM traits into drought-sensitive ***,we pro-pose four complementary research avenues to uncover this tool ***,genomes and computational methods should be used to improve understanding of the nature of variations that drive CAM ***,single-cell’omics technologies offer the possibility for in-depth characterization of the mecha-nisms that trigger environmentally controlled CAM ***,the rapid increase in new’omics data enables a comprehensive,multimodal exploration of ***,the expansion of functional geno-mics methods is paving the way for integration of CAM into farming systems.

关键词： CAM photosynthesis single-cell genomics phylogenetics crop engineering synthetic biology stress resilience

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Heat Shock Factor A1s are required for phytochrome-interacting factor 4-mediated thermomorphogenesis in Arabidopsis

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Journal of Integrative plant biology 2024年第1期66卷 20-35页

作者： Bingjie Li Shimeng Jiang Liang Gao Wenhui Wang Haozheng Luo Yining Dong Zhihua Gao Shuzhi Zheng Xinye Liu Wenqiang Tang Key Laboratory of molecular and cellular biology of Ministry of Education Hebei Research Center of the Basic Discipline of Cell BiologyHebei Collaboration Innovation Center for Cell SignalingHebei Key Laboratory of Molecular and Cellular BiologyCollege of Life SciencesHebei Normal UniversityShijiazhuang 050024China School of Information Technology Hebei University of Economics and BusinessShijiazhuang 050061China

Thermomorphogenesis and the heat shock(HS)response are distinct thermal responses in plants that are regulated by PHYTOCHROME-INTERACTING FACTOR 4(PIF4)and HEAT SHOCK FACTOR A1s(HSFA1s),*** is known about whether these responses are interconnected and whether they are activated by similar *** analysis of transcriptome dynamics in response to warm temperature(28℃)treatment revealed that 30 min of exposure activated the expression of a subset of HSFA1 target genes in Arabidopsis ***,a loss-of-function HSFA1 quadruple mutant(hsfa1-cq)was insensitive to warm temperature-induced hypocotyl *** hsfa1-cq plants grown at 28℃,the protein and transcript levels of PIF4 were greatly reduced,and the circadian rhythm of many thermomorphogenesis-related genes(including PIF4)was ***,the nuclear localization of HSFA1s and the binding of HSFA1d to the PIF4 promoter increased following warm temperature exposure,whereas PIF4 overexpression in hsfa1-cq partially rescued the altered warm temperature-induced hypocotyl growth of the *** together,these results suggest that HSFA1s are required for PIF4 accumulation at a warm temperature,and they establish a central role for HSFA1s in regulating both thermomorphogenesis and HS responses in Arabidopsis.

关键词： HSFA1 PIF4 thermomorphogenesis

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Two viral proteins translated from one open reading frame target different layers of plant defense

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plant Communications 2024年第4期5卷 177-193页

作者： Yuzhen Mei Tao Hu Yaqin Wang Rosa Lozano-Duran Xiuling Yang Xueping Zhou State Key Laboratory of Rice biology Institute of BiotechnologyZhejiang UniversityHangzhouZhejiang 310058China State Key Laboratory for biology of plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China Department of plant Biochemistry Center for Plant Molecular Biology(ZMBP)Eberhard Karls University72076 TubingenGermany

Multilayered defense responses are activated upon pathogen *** utilize a number of strategies to maximize the coding capacity of their small genomes and produce viral proteins for infection,including suppression of host ***,we reveal translation leakage as one of these strategies:two viral effec-tors encoded by tomato golden mosaic virus,chloroplast-localized C4(cC4)and membrane-associated C4(mC4),are translated from two in-frame start codons and function cooperatively to suppress ***4 localizes in chloroplasts,to which it recruits NbPUB4 to induce ubiquitination of the outer membrane;as a result,this organelle is degraded,and chloroplast-mediated defenses are ***,chloroplast-localized cC4 induces the production of singlet oxygen(1O2),which in turn promotes translo-cation of the 1O2 sensor NbMBS1 from the cytosol to the nucleus,where it activates expression of the CERK1 ***,an antiviral effect exerted by CERK1 is countered by mC4,localized at the plasma ***4,like cC4,recruits NbPUB4 and promotes the ubiquitination and subsequent degradation of CERK1,suppressing membrane-based,receptor-like kinase-dependent ***,this translation leakage strategy seems to be conserved in multiple viral species and is related to host *** suggests that stacking of different cellular antiviral responses could be an effective way to abrogate viral infection and engineer sustainable resistance to major crop viral diseases in thefield.

关键词： geminivirus C4 PUB4 CERK1 subcellular localization antiviral defense

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How plants sense and respond to osmotic stress

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Journal of Integrative plant biology 2024年第3期66卷 394-423页

作者： Bo Yu Dai-Yin Chao Yang Zhao Shanghai Center for plant Stress biology CAS Center for Excellence in Molecular Plant SciencesThe Chinese Academy of SciencesShanghai 200032China Key Laboratory of plant Carbon Capture The Chinese Academy of SciencesShanghai 200032China National Key Laboratory of plant molecular Genetics CAS Center for Excellence in Molecular Plant SciencesInstitute of Plant Physiology and EcologyThe Chinese Academy of SciencesShanghai 200032China University of Chinese Academy of Sciences Beijing 100049China

Drought is one of the most serious abiotic stresses to land *** sense and respond to drought stress to survive under water *** have studied how plants sense drought stress,or osmotic stress caused by drought,ever since Charles Darwin,and gradually obtained clues about osmotic stress sensing and signaling in *** stress is a physical stimulus that triggers many physiological changes at the cellular level,including changes in turgor,cell wall stiffness and integrity,membrane tension,and cell fluid volume,and plants may sense some of these stimuli and trigger downstream *** this review,we emphasized water potential and movements in organisms,compared putative signal inputs in cell wall-containing and cell wall-free organisms,prospected how plants sense changes in turgor,membrane tension,and cell fluid volume under osmotic stress according to advances in plants,animals,yeasts,and bacteria,summarized multilevel biochemical and physiological signal outputs,such as plasma membrane nanodomain formation,membrane water permeability,root hydrotropism,root halotropism,Casparian strip and suberin lamellae,and finally proposed a hypothesis that osmotic stress responses are likely to be a cocktail of signaling mediated by multiple *** also discussed the core scientific questions,provided perspective about the future directions in this field,and highlighted the importance of robust and smart root systems and efficient source-sink allocations for generating future high-yield stress-resistant crops and plants.

关键词： cell volume drought membrane tension osmotic stress turgor

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AtVQ25 promotes salicylic acid-related leaf senescence by fine-tuning the self-repression of AtWRKY53

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Journal of Integrative plant biology 2024年第6期66卷 1126-1147页

作者： Qi Tan Mingming Zhao Jingwei Gao Ke Li Mengwei Zhang Yunjia Li Zeting Liu Yujia Song Xiaoyue Lu Zhengge Zhu Rongcheng Lin Pengcheng Yin Chunjiang Zhou Geng Wang 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 College of Chemical Engineering Shijiazhuang UniversityShijiazhuang 050035China Institute of Botany Chinese Academy of SciencesBeijing 100093China

Most mechanistic details of chronologically ordered regulation of leaf senescence are *** networks centered on AtWRKY53 are crucial for orchestrating and integrating various senescence-related ***,AtWRKY53binds to its own promoter and represses transcription of AtWRKY53,but the biological significance and mechanism underlying this selfrepression remain *** this study,we identified the VQ motif-containing protein AtVQ25as a cooperator of *** expression level of AtVQ25 peaked at mature stage and was specifically repressed after the onset of leaf ***25-overexpressing plants and atvq25 mutants displayed precocious and delayed leaf senescence,***,we identified AtWRKY53 as an interacting partner of *** determined that interaction between AtVQ25 and AtWRKY53 prevented AtWRKY53from binding to W-box elements on the AtWRKY53promoter and thus counteracted the selfrepression of *** addition,our RNA-sequencing data revealed that the AtVQ25-AtWRKY53 module is related to the salicylic acid(SA)*** leaf senescence and SA-induced leaf senescence in AtVQ25-overexpressing lines were inhibited by an SA pathway mutant,atsid2,and Nah G transgenic plants;AtVQ25-overexpressing/atwrky53 plants were also insensitive to SA-induced leaf ***,we demonstrated that AtVQ25 directly attenuates the self-repression of AtWRKY53 during the onset of leaf senescence,which is substantially helpful for understanding the timing of leaf senescence onset modulated by AtWRKY53.

关键词： AtWRKY53 leaf senescence salicylic acid transcriptional regulation VQ motif-containing proteins

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RACK1A promotes hypocotyl elongation by scaffolding light signaling components in Arabidopsis

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Journal of Integrative plant biology 2024年第5期66卷 956-972页

作者： Yajuan Fu Wei Zhu Yeling Zhou Yujing Su Zhiyong Li Dayan Zhang Dong Zhang Jinyu Shen Jiansheng Liang Key Laboratory of molecular Design for plant Cell Factory of Guangdong Higher Education Institutes Department of BiologySchool of Life SciencesInstitute of Plant and Food SciencesSouthern University of Science and TechnologyShenzhen 518055China

plants deploy versatile scaffold proteins to intricately modulate complex cell *** these,RACK1A(Receptors for Activated C Kinase 1A)stands out as a multifaceted scaffold protein functioning as a central integrative hub for diverse signaling ***,the precise mechanisms by which RACK1A orchestrates signal transduction to optimize seedling development remain largely ***,we demonstrate that RACK1A facilitates hypocotyl elongation by functioning as a flexible platform that connects multiple key components of light signaling ***1A interacts with PHYTOCHROME INTERACTING FACTOR(PIF)3,enhances PIF3 binding to the promoter of BBX11 and down-regulates its ***,RACK1A associates with ELONGATED HYPOCOTYL 5(HY5)to repress HY5 biochemical activity toward target genes,ultimately contributing to hypocotyl *** darkness,RACK1A is targeted by CONSTITUTIVELY PHOTOMORPHOGENIC(COP)1 upon phosphorylation and subjected to COP1-mediated degradation via the 26 S proteasome *** findings provide new insights into how plants utilize scaffold proteins to regulate hypocotyl elongation,ensuring proper skoto-and photo-morphogenic development.

关键词： Arabidopsis hypocotyl development light signaling components RACK1 scaffoldprotein

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Chloroplast immunity: A cornerstone of plant defense

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molecular plant 2024年第5期17卷 686-688页

作者： Jie Liu Pan Gong Ruobin Lu Rosa Lozano-Duran Xueping Zhou Fangfang Li State Key Laboratory for biology of plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100081China State Key Laboratory of Rice biology Institute of BiotechnologyZhejiang UniversityHangzhouZhejiang 310058China Department of plant Biochemistry Centre for Plant Molecular Biology(ZMBP)Eberhard Karls UniversityTubingen 72076Germany

Increasing evidence supports the notion that pattern-recognition-receptor-mediated immunity goes beyond plasma membrane-to-nucleus *** the findings of the pathways linking plasma membrane and chloroplasts and the functions of stromules and perinuclear chloroplast clustering(PCC)in plant defense,chloroplast immunity has emerged as a cornerstone of plant defense and a target of plant pathogens.

关键词： plant immunity corners

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Alternaria TeA toxin activates a chloroplast retrograde signaling pathway to facilitate JAdependent pathogenicity

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plant Communications 2024年第3期5卷 123-140页

作者： Jiale Shi He Wang Mengping Li Liru Mi Yazhi Gao Sheng Qiang Yu Zhang Dan Chen Xinbin Dai Hongyu Ma Huan Lu Chanhong Kim Shiguo Chen Weed Research Laboratory Nanjing Agricultural UniversityNanjing 210095China Shanghai Center for plant Stress biology Center for Excellence in Molecular Plant SciencesChinese Academy of SciencesShanghai 200032China Bioinformatics and Computational biology Laboratory Noble Research Institute2510 Sam Noble ParkwayArdmoreOK 73401USA College of plant Protection Nanjing Agricultural UniversityNanjing 210095China Department of Botany and plant biology University of GenevaGenevaSwitzerland

The chloroplast is a critical battleground in the arms race between plants and *** microbe-secreted mycotoxins,tenuazonic acid(TeA),produced by the genus Alternaria and other phytopathogenic fungi,inhibits photosynthesis,leading to a burst of photosynthetic singlet oxygen(1O2)that is implicated in damage and chloroplast-to-nucleus retrograde *** the signicant crop damage caused by Alternaria pathogens,our understanding of the molecular mechanism by which TeA promotes pathoge-nicity and cognate plant defense responses remains *** now reveal that *** induces necrotrophic foliar lesions by harnessing EXECUTER1(EX1)/EX2-mediated chloroplast-to-nucleus retro-grade signaling activated by TeA toxin–derived photosynthetic 1O2 in Arabidopsis *** of the 1O2-sensitive EX1-W643 residue or complete deletion of the EX1 singlet oxygen sensor domain compro-mises expression of 1O2-responsive nuclear genes and foliar *** also found that TeA toxin rapidly induces nuclear genes implicated in jasmonic acid(JA)synthesis and signaling,and EX1-mediated retro-grade signaling appears to be critical for establishing a signaling cascade from 1O2 to *** present study sheds new light on the foliar pathogenicity of ***,during which EX1-dependent 1O2 signaling in-duces JA-dependent foliar cell death.

关键词： TeA mycotoxin Alternaria pathogen chloroplast singlet oxygen retrograde signaling jasmonic acid

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Modern phenomics to empower holistic crop science, agronomy, and breeding research

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Journal of Genetics and Genomics 2024年第8期51卷 790-800页

作者： Ni Jiang Xin-Guang Zhu Institute of Genetics and Developmental biology Chinese Academy of SciencesBeijing 100101China Center of Excellence for molecular plant Sciences Chinese Academy of SciencesShanghai 200032China

Crop phenomics enables the collection of diverse plant traits for a large number of samples along different time scales,representing a greater data collection throughput compared with traditional *** modern crop phenomics use different sensors to collect reflective,emitted,and fluorescence signals,etc.,from plant organs at different spatial and temporal *** multi-modal,high-dimensional data not only accelerates basic research on crop physiology,genetics,and whole plant systems modeling,but also supports the optimization of field agronomic practices,internal environments of plant factories,and ultimately crop *** challenges and opportunities facing the current crop phenomics research community include developing community consensus or standards for data collection,management,sharing,and processing,developing capabilities to measure physiological parameters,and enabling farmers and breeders to effectively use phenomics in the field to directly support agricultural production.

关键词： Crop phenomics High-throughput phenotyping Traits Crop designer breeding Agronomy

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The processed C-terminus of AvrRps4 effector suppresses plant immunity via targeting multiple WRKYs

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Journal of Integrative plant biology 2024年第8期66卷 1769-1787页

作者： Quang-Minh Nguyen Arya Bagus Boedi Iswanto Hobin Kang Jiyun Moon Kieu Anh Thi Phan Geon Hui Son Mi Chung Suh Eui-Hwan Chung Walter Gassmann Sang Hee Kim Division of Applied Life Science(BK21 Four program) Plant Molecular Biology and Biotechnology Research CenterGyeongsang National UniversityJinju 52828Korea Department of Life Science Sogang UniversitySeoul 04107Korea Department of plant Biotechnology Korea UniversitySeoul 02841Korea Division of plant Science and Technology Christopher S.Bond Life Sciences Center and Interdisciplinary Plant GroupUniversity of MissouriColumbiaMissouri 65211USA Division of Life Science and Research Institute of molecular Alchemy Gyeongsang National UniversityJinju 52828Korea

Pathogens generate and secrete effector proteins to the host plant cells during pathogenesis to promote virulence and *** the plant carries resistance(R)proteins that recognize pathogen effectors,effector-triggered immunity(ETI)is activated,resulting in a robust immune response and hypersensitive response(HR).The bipartite effector AvrRps4 from Pseudomonas syringae *** has been well studied in terms of avirulence *** planta,AvrRps4 is processed into two *** Cterminal fragment of AvrRps4(AvrRps4^(C))induces HR in turnip and is recognized by the paired resistance proteins AtRRS1/AtRPS4 in ***,we show that AvrRps4^(C)targets a group of Arabidopsis WRKY,including WRKY46,WRKY53,WRKY54,and WRKY70,to induce its virulence ***,AvrRps4^(C)suppresses the general binding and transcriptional activities of immune-positive regulator WRKY54 and WRKY54-mediated ***4^(C)interferes with WRKY54's binding activity to target gene SARD1 in vitro,suggesting WRKY54 is sequestered from the SARD1 promoter by AvrRps4^(C).Through the interaction of Avr Rps4^(C)with four WRKYs,AvrRps4 enhances the formation of homo-/heterotypic complexes of four WRKYs and sequesters them in the cytoplasm,thus inhibiting their function in plant ***,our results provide a detailed virulence mechanism of AvrRps4 through its C-terminus.

关键词： AvrRps4 bacterial effector effector-triggered immunity immune response suppression transcription factor WRKY

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