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Hordedane diterpenoid phytoalexins restrict Fusarium graminearum infection but enhance Bipolaris sorokiniana colonization of barley roots

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Molecular plant 2024年第8期17卷 1307-1327页

作者： Yaming Liu Dario Esposto Lisa K.Mahdi Andrea Porzel Pauline Stark Hidayat Hussain Anja Scherr-Henning Simon Isfort Ulschan.Bathe Ivan F.Acosta Alga Zuccaro Gerd U.Balcke Alain Tissier Department of cell and Metabolic biology Leibniz Institute of Plant BiochemistryHalleGermany Institute for plant Sciences Cluster of Excellence on Plant Sciences(CEPLAS)Cologne BiocenterUniversity of CologneCologneGermany Department of Bioorganic Chemistry Leibniz Institute of Plant BiochemistryHalleGermany Max Planck Institute for plant Breeding Research CologneGermany Horticultural Sciences University of FloridaGainesvilleFLUSA.

plant immunity is a multilayered process that includes recognition of patterns or effectors from pathogens to elicit defense *** include the induction of a cocktail of defense metabolites that typically restrict pathogen ***,we investigate the interaction between barley roots and the fungal pathogens Bipolaris sorokiniana(Bs)and Fusarium graminearum(Fg)at the metabolite *** identify hordedanes,a previously undescribed set of labdane-related diterpenoids with antimicrobial properties,as critical players in these *** of barley roots by Bs and Fg elicits hordedane synthesis from a 60o-kb gene *** reconstruction of the biosynthesis pathway in yeast and Nicotiana benthamiana produced several hordedanes,including one of the most functionally decorated products 19-β-hydroxy-hordetrienoic acid(19-OH-HTA).Barley mutants in the diterpene synthase genes of this cluster are unable to produce hordedanes but,unexpectedly,show reduced Bs *** contrast,colonization by Fusarium graminearum,another fungal pathogen of barley and wheat,is 4-fold higher in the mutants completely lacking ***,19-OH-HTA enhances both germination and growth of Bs,whereas it inhibits other pathogenic fungi,including *** of microscopy and transcriptomics data suggest that hordedanes delay the necrotrophic phase of *** together,these results show that adapted pathogens such as Bs can subvert plant metabolic defenses to facilitate root colonization.

关键词： barley Hordeum vulgare diterpenoid phytoalexins gene cluster pathogenic fungi Bipolaris sorokininiana Fusarium graminearum

BFP1:One of 700 Arabidopsis F-box proteins mediates degradation of JA oxidases to promote plant immunity

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Molecular plant 2024年第3期17卷 375-376页

作者： Claus Wasternack Bettina Hause Department of Molecular Signal Processing Leibniz Institute of Plant Biochemistry7 Weinberg 306120 Halle(Saale)Germany Department of cell and Metabolic biology Leibniz Institute of Plant Biochemistry06120 Halle(Saale)Germany

A switch off in jasmonate(JA)signaling by hydroxylation upon wounding was described in 2008(Miersch et al.,2008).This initiated the cloning of CYP450 enzymes involved in hydroxylation and carboxylation of JA and its amino acid conjugate JA-le,the most active form of JA compounds(reviewed by Wasternack and Feussner[2018]and Heitz et al.[2019]).Due to the central role of JA and JA-lle in plant stress responses and development(Wasternack and Hause,2013),catabolism of JA and its derivatives is an essential component in the sustainment of homeostasis of active JA compounds(Howe et al.,2018;Heitz et al.,2019).Catabolism of JA and JAIle takes place by JA-induced oxygenases(JOXs),also named JA-oxidases(JAOs),and by hydroxylation(CYP94B3/B1)followed by carboxylation(CYP94C1),respectively(Heitz et al.,2019).Another reaction performed by IAR3/ILL6 results in the deconjugation of JA-lle and 12-OH-JA-le to JA and 12-OH-JA,respectively(Heitz et al.,2019;Wasternack and Feussner,2018).

关键词： conjugate initiated media

Efficient and multiplex gene upregulation in plants through CRISPR-Cas-mediated knockin of enhancers

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Molecular plant 2024年第9期17卷 1472-1483页

作者： Qi Yao Rundong Shen Yang Shao Yifu Tian Peijin Han Xuening Zhang Jian-Kang Zhu Yuming Lu Shanghai Collaborative Innovation Center of Agri-Seeds Joint Center for Single-Cell BiologySchool of Agriculture and BiologyShanghai Jiao Tong UniversityShanghai 200240China Shanghai Center for plant Stress biology Center for Excellence in Molecular Plant SciencesChinese Academy of SciencesShanghai 201602China University of the Chinese Academy of Sciences BeijingChina College of plant Science and Technology Huazhong Agricultural UniversityWuhan 430070China institute of Advanced Biotechnology and School of Medicine Southern University of Science and TechnologyShenzhen 518055China

Geneupregulation through genome editing is important for plant research and *** insertion of short transcriptional enhancers(STEs)into gene promoters may offer a universal solution akin to transgene-mediated overexpression while avoiding the drawbacks associated with ***,we introduce an“in locus activation”technique in rice that leverages well-characterized STEs for refined,heritable,and multiplexed gene *** address the scarcity of potent enhancers,we developed a large-scale mining approach and discovered a suite of STEs that are capable of enhancing gene expression in rice *** in locus integration of these STEs into eight rice genes resulted in substantial tran-scriptional upregulation in the edited plants,with up to 869.1-fold increases in their transcript ***-ploying a variety of STEs,we achieved delicate control of gene expression,enabling the fine-tuning of key phenotypic traits such as plant *** approach also enabled efficient multiplexed gene upregu-lation,with up to four genes activated simultaneously,significantly enhancing the nicotinamide mononucleotide metabolic ***,heritability studies from the To to T3 generations confirmed the stable and heritable nature of STE-driven gene ***,our work demon-strates that coupled with STE mining,leveraging genome editing for in locus activation and gene upregu-lation holds great promise to be widely adopted in fundamental plant research and crop breeding.

关键词： genome editing short transcriptional enhancers gene upregulation crop breeding

Efficient scar-free knock-ins of several kilobases in plants by engineered CRISPR-Cas endonucleases

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Molecular plant 2024年第5期17卷 824-837页

作者： Tom Schreiber Anja Prange Petra Schafer Thomas Iwen Ramona Grutzner Sylvestre Marillonnet Aurelie Lepage Marie Javelle Wyatt Paul Alain Tissier Department of cell and Metabolic biology Leibniz Institute of Plant BiochemistryWeinberg 306120 Halle(Saale)Germany Limagrain Centre de RechercheRoute d’EnnezatCS 9012663720 ChappesFrance

In plants and mammals,non-homologous end-joining is the dominant pathway to repair DNA doublestrand breaks,making it challenging to generate knock-in *** this study,we identified two groups of exonucleases from the herpes virus and the bacteriophage T7 families that conferred an up to 38-fold increase in homology-directed repair frequencies when fused to Cas9/Cas12a in a tobacco mosaic virus-based transient assay in Nicotiana *** achieved precise and scar-free insertion of several kilobases of DNA both in transient and stable transformation *** Arabidopsis thaliana,fusion of Cas9 to a herpes virus family exonuclease led to 10-fold higher frequencies of knock-ins in the first generation of *** addition,we demonstrated stable and heritable knock-ins in wheat in 1%of the primary *** together,our results open perspectives for the routine production of heritable knock-in and gene replacement events in plants.

关键词： homology-directed repair knockin gene replacement CRISPR-Cas 50 exonuclease plants

Genetic insights into adaptation of alfalfa

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Molecular plant 2024年第8期17卷 1170-1171页

作者： Yafei Guo Lipeng Kang Fei Lu State Key laboratory of plant cell and Chromosome Engineering Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina Key laboratory of Seed Innovation Institute of Genetics and Developmental BiologyChineseAcademyof SciencesBeijingChina University of Chinese Academy of Sciences BeijingChina CAS-JIC Centre of Excellence for plant and Microbial Science(CEPAMS) Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina

Climate change is increasingly affecting agricultural outputs,as evidenced by the changing global temperature and extreme weather events that significantly impact crop yields(Lesk et al.,2016).To address this challenge,there is a growing interest in developing crops that can endure these adverse conditions to ensure food *** examples in nature show how crops have adapted to diverse environments(Gutaker and Purugganan,2023),leaving behind a rich genomic *** genomics has started to provide insights into these adaptive processes from evolutionary and genetic perspectives(Savolainen et al.,2013;Aguirre-Liguori et al.,2021;Sang et al.,2022).Recently,Zhang et al.(Zhang et al.,2024)investigated alfalfa(Medicago sativa ***),known as the"queen of forages,"for its broad *** analyzing whole-genome sequencing data of 702 accessions from 24 Medicago species,this study enriches our understanding of how to develop crops and meet the challenges of climate change.

关键词： sativa crops environments

TabHLH27 orchestrates root growth and drought tolerance to enhance water use efficiency in wheat

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Journal of Integrative plant biology 2024年第7期66卷 1295-1312页

作者： Dongzhi Wang Xiuxiu Zhang Yuan Cao Aamana Batool Yongxin Xu Yunzhou Qiao Yongpeng Li Hao Wang Xuelei Lin Xiaomin Bie Xiansheng Zhang Ruilian Jing Baodi Dong Yiping Tong Wan Teng Xigang Liu Jun Xiao Key laboratory of plant cell and Chromosome Engineering Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Center for Agricultural Resources Research Institute of Genetics and Developmental BiologyChinese Academy of SciencesShijiazhuang 050022China Key laboratory of Crop biology College of Life SciencesShandong Agricultural UniversityTai'an 271018China State Key laboratory of Crop Gene Resources and Breeding Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China 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 Centre of Excellence for plant and Microbial Science(CEPAMS) JIC‐CASBeijing 100101China

Cultivating high-yield wheat under limited water resources is crucial for sustainable agriculture in semiarid *** water scarcity,plants activate drought response signaling,yet the delicate balance between drought tolerance and development remains *** genome-wide association studies and transcriptome profiling,we identified a wheat atypical basic helix-loop-helix(b HLH)transcription factor(TF),Tab HLH27-A1,as a promising quantitative trait locus candidate for both relative root dry weight and spikelet number per spike in *** HLH27-A1/B1/D1 knockout reduced wheat drought tolerance,yield,and water use efficiency(WUE).Tab HLH27-A1 exhibited rapid induction with polyethylene glycol(PEG)treatment,gradually declining over *** activated stress response genes such as Ta CBL8-B1 and Ta CPI2-A1 while inhibiting root growth genes like Ta SH15-B1 and Ta WRKY70-B1 under short-term PEG *** distinct transcriptional regulation of Tab HLH27-A1 involved diverse interacting factors such as Ta ABI3-D1 and Tab *** variations of Tab HLH27-A1influence its transcriptional responses to drought stress,with Tab HLH27-A1^(Hap-II)associated with stronger drought tolerance,larger root system,more spikelets,and higher WUE in ***,the excellent Tab HLH27-A1^(Hap-II)was selected during the breeding process in China,and introgression of Tab HLH27-A1^(Hap-II)allele improved drought tolerance and grain yield,especially under water-limited *** study highlights Tab HLH27-A1's role in balancing root growth and drought tolerance,providing a genetic manipulation locus for enhancing WUE in wheat.

关键词： drought tolerance GWAS root growth wheat WUE

A growth-regulating factor 7(GRF7)-mediated gene regulatory network promotes leaf growth and expansion in sugarcane

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The Crop Journal 2024年第2期12卷 422-431页

作者： Qiaoyu Wang Yihan Li Dadong Lin Xiaoxi Feng Yongjun Wang Tianyou Wang Hongyan Ding Jisen Zhang State Key lab for Conservation and Utilization of Subtropical AgroBiological Resources and Guangxi Key lab for Saccharum biology Guangxi UniversityNanning 530005GuangxiChina Center for Genomics and Biotechnology/Fujian Provincial Key laboratory of Haixia Applied plant Systems biology/Key laboratory of Saccharum biology and Genetic Breeding/National Engineering Research Center for Saccharum Fujian Agriculture and Forestry UniversityFuzhou 350002FujianChina

Knowledge of the function of growth-regulating factors(GRFs)in sugarcane(Saccharum officinarum and ***)growth and development could assist breeders in selecting desirable plant ***,limited information about GRFs is available in Saccharum due to their *** this study,22 GRFs were identified in the two species and their conserved domains,gene structures,chromosome location,and synteny were ***7 expression varied among tissues and responded to diurnal ***7-YFP was localized preferentially in the nucleus and appears to act as a transcriptional ***7 positively regulated the size and length of rice leaves,possibly by regulating cell size and plant *** seven potential transcription factors binding to the SsGRF7 promoter in ***,four showed positive expression patterns,and two showed negative expression patterns relative to SsGRF7.

关键词： Expression analysis Growth-regulating factor Leaf development Sugarcane Transcription factors

Unveiling the distinctive traits of functional rye centromeres:minisatellites,retrotransposons,and R-loop formation

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Science China(Life Sciences) 2024年第9期67卷 1989-2002页

作者： Chang Liu Shulan Fu Congyang Yi Yang Liu Yuhong Huang Xianrui Guo Kaibiao Zhang Qian Liu James A.Birchler Fangpu Han State Key laboratory of plant cell and Chromosome Engineering Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Key laboratory for plant Genetics and Breeding Sichuan Agricultural UniversityChengdu 611130China Division of Biological Science University of MissouriColumbia 65211-7400USA

Centromeres play a vital role in cellular division by facilitating kinetochore assembly and spindle *** their conserved functionality,centromeric DNA sequences exhibit rapid evolution,presenting diverse sizes and compositions across *** functional significance of rye centromeric DNA sequences,particularly in centromere identity,remains *** this study,we comprehensively characterized the sequence composition and organization of rye *** findings revealed that these centromeres are primarily composed of long terminal repeat retrotransposons(LTR-RTs)and interspersed *** systematically classified LTR-RTs into five categories,highlighting the prevalence of younger CRS1,CRS2,and CRS3 of CRSs(centromeric retrotransposons of Secale cereale)were primarily located in the core centromeres and exhibited a higher association with CENH3 *** minisatellites,mainly derived from retrotransposons,along with CRSs,played a pivotal role in establishing functional centromeres in ***,we observed the formation of R-loops at specific regions of CRS1,CRS2,and CRS3,with both rye pericentromeres and centromeres exhibiting enrichment in ***,these R-loops selectively formed at binding regions of the CENH3 nucleosome in rye centromeres,suggesting a potential role in mediating the precise loading of CENH3 to centromeres and contributing to centromere *** work provides insights into the DNA sequence composition,distribution,and potential function of R-loops in rye *** knowledge contributes valuable information to understanding the genetics and epigenetics of rye centromeres,offering implications for the development of synthetic centromeres in future plant modifications and beyond.

关键词： centromere LTR-RTs minisatellite rye R-loop

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