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分子植物（英文版）
分子植物（英文版）编辑部
分子植物（英文版）

分子植物（英文版）编辑部

双月刊

1674-2052

molplant@gmail.com

200031

上海市岳阳路319号31B楼

分子植物（英文版）/Journal Molecular PlantCSCDCSTPCD北大核心SCI
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    Dt1-SWEET 10a partner:Photoperiodic control of seed weight in soybean

    Li-Qing ChenLalit Dev Tiwari
    839-841页
      原文链接:
    • 万方数据

    GRP7 phase separation as an interpreter of temperature cues

    Sunita PathakLucia C.Strader
    842-844页
      原文链接:
    • 万方数据
    • 维普

    Polycomb and trithorax:Their yin-yang dynamics in plants

    Fan XuDaolei ZhangLiang LeLi Pu...
    845-847页
      原文链接:
    • 万方数据
    • 维普

    Satellite-enabled enviromics to enhance crop improvement

    Rafael T.ResendeLee HickeyCibele H.AmaralLucas L.Peixoto...
    848-866页
    查看更多>>摘要：Enviromics refers to the characterization of micro-and macroenvironments based on large-scale environ-mental datasets.By providing genotypic recommendations with predictive extrapolation at a site-specific level,enviromics could inform plant breeding decisions across varying conditions and anticipate produc-tivity in a changing climate.Enviromics-based integration of statistics,envirotyping(i.e.,determining envi-ronmental factors),and remote sensing could help unravel the complex interplay of genetics,environment,and management.To support this goal,exhaustive envirotyping to generate precise environmental profiles would significantly improve predictions of genotype performance and genetic gain in crops.Already,infor-matics management platforms aggregate diverse environmental datasets obtained using optical,thermal,radar,and light detection and ranging(LiDAR)sensors that capture detailed information about vegetation,surface structure,and terrain.This wealth of information,coupled with freely available climate data,fuels innovative enviromics research.While enviromics holds immense potential for breeding,a few obstacles remain,such as the need for(1)integrative methodologies to systematically collect field data to scale and expand observations across the landscape with satellite data;(2)state-of-the-art Al models for data integration,simulation,and prediction;(3)cyberinfrastructure for processing big data across scales and providing seamless interfaces to deliver forecasts to stakeholders;and(4)collaboration and data sharing among farmers,breeders,physiologists,geoinformatics experts,and programmers across research insti-tutions.Overcoming these challenges is essential for leveraging the full potential of big data captured by satellites to transform 21st century agriculture and crop improvement through enviromics.
      原文链接:
    • 万方数据
    • 维普

    Evolutionary genomics of climatic adaptation and resilience to climate change in alfalfa

    Fan ZhangRuicai LongZhiyao MaHua Xiao...
    867-883页
    查看更多>>摘要：Given the escalating impact of climate change on agriculture and food security,gaining insights into the evolutionary dynamics of climatic adaptation and uncovering climate-adapted variation can empower the breeding of climate-resilient crops to face future climate change.Alfalfa(Medicago sativa subsp.sat-iva),the queen of forages,shows remarkable adaptability across diverse global environments,making it an excellent model for investigating species responses to climate change.In this study,we performed popu-lation genomic analyses using genome resequencing data from 702 accessions of 24 Medicago species to unravel alfalfa's climatic adaptation and genetic susceptibility to future climate change.We found that interspecific genetic exchange has contributed to the gene pool of alfalfa,particularly enriching defense and stress-response genes.Intersubspecific introgression between M.sativa subsp.falcata(subsp.fal-cata)and alfalfa not only aids alfalfa's climatic adaptation but also introduces genetic burden.A total of 1671 genes were associated with climatic adaptation,and 5.7％of them were introgressions from subsp.falcata.By integrating climate-associated variants and climate data,we identified populations that are vulnerable to future climate change,particularly in higher latitudes of the Northern Hemisphere.These find-ings serve as a clarion call for targeted conservation initiatives and breeding efforts.We also identified pre-adaptive populations that demonstrate heightened resilience to climate fluctuations,illuminating a pathway for future breeding strategies.Collectively,this study enhances our understanding about the local adaptation mechanisms of alfalfa and facilitates the breeding of climate-resilient alfalfa cultivars,contrib-uting to effective agricultural strategies for facing future climate change.
      原文链接:
    • 万方数据
    • 维普

    Activation of stress-response genes by retrograde signaling-mediated destabilization of nuclear importin IMPα-9 and its interactor TPR2

    Liping ZengMaria Fernanda Gomez MendezJingzhe GuoJishan Jiang...
    884-899页
    查看更多>>摘要：Stress-induced retrograde signal transmission from the plastids to the nucleus has long puzzled plant bi-ologists.To address this,we performed a suppressor screen of the ceh1 mutant,which contains elevated 2-C-methyl-d-erythritol-2,4-cyclopyrophosphate(MEcPP)levels,and identified the gain-of-function mutant impα-9,which shows reversed dwarfism and suppressed expression of stress-response genes in the ceh1 background despite heightened MEcPP.Subsequent genetic and biochemical analyses estab-lished that the accumulation of MEcPP initiates an upsurge in Arabidopsis SKP1-like 1(ASK1)abundance,a pivotal component in the proteasome degradation pathway.This increase in ASK1 prompts the degrada-tion of IMPα-9.Moreover,we uncovered a protein-protein interaction between IMPα-9 and TPR2,a tran-scriptional co-suppressor and found that a reduction in IMPα-9 levels coincides with a decrease in TPR2 abundance.Significantly,the interaction between IMPα-9 and TPR2 was disrupted in impα-9mutants,high-lighting the critical role of a single amino acid alteration in maintaining their association.Disruption of their interaction results in the reversal of MEcPP-associated phenotypes.Chromatin immunoprecipitation coupled with sequencing analyses revealed that TPR2 binds globally to stress-response genes and sug-gested that IMPα-9 associates with the chromatin.They function together to suppress the expression of stress-response genes under normal conditions,but this suppression is alleviated in response to stress through the degradation of the suppressing machinery.The biological relevance of our discoveries was validated under high light stress,marked by MEcPP accumulation,elevated ASK1 levels,IMPα-9 degreda-tion,reduced TPR2 abundance,and subsequent activation of a network of stress-response genes.In summary,our study collectively unveils fresh insights into plant adaptive mechanisms,highlighting intri-cate interactions among retrograde signaling,the proteasome,and nuclear transport machinery.
      原文链接:
    • 万方数据
    • 维普

    OsPRMT6a-mediated arginine methylation of OsJAZ1 regulates jasmonate signaling and spikelet development in rice

    Kun DongFuqing WuSiqi ChengShuai Li...
    900-919页
    查看更多>>摘要：Although both protein arginine methylation(PRMT)and jasmonate(JA)signaling are crucial for regulating plant development,the relationship between these processes in the control of spikelet development re-mains unclear.In this study,we used the CRISPR/Cas9 technology to generate two OsPRMT6a loss-of-function mutants that exhibit various abnormal spikelet structures.Interestingly,we found that OsPRMT6a can methylate arginine residues in JA signal repressors OsJAZ1 and OsJAZ7.We showed that arginine methylation of OsJAZ1 enhances the binding affinity of OsJAZ1 with the JA receptors OsCOl1a and OsCOl1b in the presence of JAs,thereby promoting the ubiquitination of OsJAZ1 by the SCFosCOI1a/OsCOI1b complex and degradation via the 26S proteasome.This process ultimately releases Os-MYC2,a core transcriptional regulator in the JA signaling pathway,to activate or repress JA-responsive genes,thereby maintaining normal plant(spikelet)development.However,in the osprmt6a-1 mutant,reduced arginine methylation of OsJAZ1 impaires the interaction between OsJAZ1 and OsCOI1a/OsCOI1b in the presence of JAs.As a result,OsJAZ1 proteins become more stable,repressing JA re-sponses,thus causing the formation of abnormal spikelet structures.Moreover,we discovered that JA signaling reduces the OsPRMT6a mRNA level in an OsMYC2-dependent manner,thereby establishing a negative feedback loop to balance JA signaling.We further found that OsPRMT6a-mediated arginine methylation of OsJAZ1 likely serves as a switch to tune JA signaling to maintain normal spikelet develop-ment under harsh environmental conditions such as high temperatures.Collectively,our study establishes a direct molecular link between arginine methylation and JA signaling in rice.
      原文链接:
    • 万方数据
    • 维普

    Histological and single-nucleus transcriptome analyses reveal the specialized functions of ligular sclerenchyma cells and key regulators of leaf angle in maize

    Qibin WangQiuyue GuoQingbiao ShiHengjia Yang...
    920-934页
    查看更多>>摘要：Leaf angle(LA)is a crucial factor that affects planting density and yield in maize.However,the regulatory mechanisms underlying LA formation remain largely unknown.In this study,we performed a comparative histological analysis of the ligular region across various maize inbred lines and revealed that LA is signif-icantly influenced by a two-step regulatory process involving initial cell elongation followed by subsequent lignification in the ligular adaxial sclerenchyma cells(SCs).Subsequently,we performed both bulk and single-nucleus RNA sequencing,generated a comprehensive transcriptomic atlas of the ligular region,and identified numerous genes enriched in the hypodermal cells that may influence their specialization into SCs.Furthermore,we functionally characterized two genes encoding atypical basic-helix-loop-helix(bHLH)transcription factors,bHLH30 and its homolog bHLH155,which are highly expressed in the elon-gated adaxial cells.Genetic analyses revealed that bHLH30 and bHLH155 positively regulate LA expansion,and molecular experiments demonstrated their ability to activate the transcription of genes involved in cell elongation and lignification of SCs.These findings highlight the specialized functions of ligular adaxial SCs in LA regulation by restricting further extension of ligular cells and enhancing mechanical strength.The transcriptomic atlas of the ligular region at single-nucleus resolution not only deepens our understanding of LA regulation but also enables identification of numerous potential targets for optimizing plant architec-ture in modern maize breeding.
      原文链接:
    • 万方数据
    • 维普

    The RNA binding protein EHD6 recruits the m6A reader YTH07 and sequesters OsCOL4 mRNA into phase-separated ribonucleoprotein condensates to promote rice flowering

    Song CuiPeizhe SongChaolong WangSaihua Chen...
    935-954页
    查看更多>>摘要：N6-Methyladenosine(m6A)is one of the most abundant modifications of eukaryotic mRNA,but its compre-hensive biological functionality remains further exploration.In this study,we identified and characterized a new flowering-promoting gene,EARLY HEADING DATE6(EHD6),in rice.EHD6 encodes an RNA recognition motif(RRM)-containing RNA binding protein that is localized in the non-membranous cytoplasm ribonu-cleoprotein(RNP)granules and can bind both m6A-modified RNA and unmodified RNA indiscriminately.We found that EHD6 can physically interact with YTH07,a YTH(YT521-B homology)domain-containing m6A reader.We showed that their interaction enhances the binding of an m6A-modified RNA and triggers relocation of a portion of YTH07 from the cytoplasm into RNP granules through phase-separated conden-sation.Within these condensates,the mRNA of a rice flowering repressor,CONSTANS-like 4(OsCOL4),be-comes sequestered,leading to a reduction in its protein abundance and thus accelerated flowering through the Early heading date 1 pathway.Taken together,these results not only shed new light on the molecular mechanism of efficient m6A recognition by the collaboration between an RNA binding protein and YTH fam-ily m6A reader,but also uncover the potential for m6A-mediated translation regulation through phase-separated ribonucleoprotein condensation in rice.
      原文链接:
    • 万方数据

    A circular single-stranded DNA mycovirus infects plants and confers broad-spectrum fungal resistance

    Xianhong WangIoly Kotta-LoizouRobert H.A.CouttsHuifang Deng...
    955-971页
    查看更多>>摘要：Circular single-stranded DNA(ssDNA)viruses have been rarely found in fungi,and the evolutionary and ecological relationships among ssDNA viruses infecting fungi and other organisms remain unclear.In this study,a novel circular ssDNA virus,tentatively named Diaporthe sojae circular DNA virus 1(DsCDV1),was identified in the phytopathogenic fungus Diaporthe sojae isolated from pear trees.DsCDV1 has a monopartite genome(3185 nt in size)encapsidated in isometric virions(21-26 nm in diam-eter).The genome comprises seven putative open reading frames encoding a discrete replicase(Rep)split by an intergenic region,a putative capsid protein(CP),several proteins of unknown function(P1-P4),and a long intergenic region.Notably,the two split parts of DsCDV1 Rep share high identities with the Reps of Geminiviridae and Genomoviridae,respectively,indicating an evolutionary linkage with both families.Phylogenetic analysis based on Rep or CP sequences placed DsCDV1 in a unique cluster,supporting the establishment of a new family,tentatively named Gegemycoviridae,intermediate to both families.DsCDV1 significantly attenuates fungal growth and nearly erases fungal virulence when transfected into the host fungus.Remarkably,DsCDV1 can systematically infect tobacco and pear seedlings,providing broad-spectrum resistance to fungal diseases.Subcellular localization analysis revealed that DsCDV1 P3 is systematically localized in the plasmodesmata,while its expression in trans-complementation experi-ments could restore systematic infection of a movement-deficient plant virus,suggesting that P3 is a move-ment protein.DsCDV1 exhibits unique molecular and biological traits not observed in other ssDNA viruses,serving as a link between fungal and plant ssDNA viruses and presenting an evolutionary connection be-tween ssDNA viruses and fungi.These findings contribute to expanding our understanding of ssDNA virus diversity and evolution,offering potential biocontrol applications for managing crucial plant diseases.
      原文链接:
    • 万方数据
    • 维普