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

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Molecular plant 2024年第6期17卷 884-899页

作者： Liping Zeng Maria Fernanda Gomez Mendez Jingzhe Guo Jishan Jiang Bailong Zhang Hao Chen Brandon Le Haiyan Ke Katayoon Dehesh Department of Botany and plant Sciences Institute of Integrative Genome BiologyUniversity of CaliforniaRiversideRiversideCA 92521USA School of Medicine University of CaliforniaRiversideRiversideCA 92521USA

Stress-induced retrograde signal transmission from the plastids to the nucleus has long puzzled plant *** 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 *** genetic and biochemical analyses established that the accumulation of MEcPP initiates an upsurge in Arabidopsis SKP1-like 1(ASK1)abundance,a pivotal component in the proteasome degradation *** increase in ASK1 prompts the degradation of IMPα-***,we uncovered a protein-protein interaction between IMPα-9 and TPR2,a transcriptional co-suppressor and found that a reduction in IMPα-9 levels coincides with a decrease in TPR2 ***,the interaction between IMPα-9 and TPR2 was disrupted in impα-9 mutants,highlighting the critical role of a single amino acid alteration in maintaining their *** of their interaction results in the reversal of MEcPP-associated *** immunoprecipitation coupled with sequencing analyses revealed that TPR2 binds globally to stress-response genes and suggested that IMPα-9 associates with the *** 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 *** biological relevance of our discoveries was validated under high light stress,marked by MEcPP accumulation,elevated ASK1 levels,IMPα-9 degredation,reduced TPR2 abundance,and subsequent activation of a network of stress-response *** summary,our study collectively unveils fresh insights into plant adaptive mechanisms,highlighting intricate interactions among retrograde signaling,the proteasome,and nuclear transport machinery.

关键词： plastidial retrograde signal MEcPP ASK1 impα-9 TPR2

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Proxitome profiling reveals a conserved SGT1- NSL1 signaling module that activates NLRmediated immunity

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Molecular plant 2024年第9期17卷 1369-1391页

作者： Dingliang Zhang Xinxin Yang Zhiyan Wen Zhen Li Xinyu Zhang Chenchen Zhong Jiajie She Qianshen Zhang He Zhang Wenli Li Xiaoyun Zhao Mingliang Xu Zhen Su Dawei Li Savithramma P.Dinesh-Kumar Yongliang Zhang State Key laboratory of plant Environmental Resilience College of Biological SciencesChina Agricultural UniversityBejing 100193China Department of plant Biology and The genome Center College of Biological SciencesUniversity of CaliforniaDavisDavisCA 95616USA State Key laboratory of plant Environmental Resilience College of Agronomy and BiotechnologyChina Agricultural UniversityBejing 100193China

Suppressor of G2 allele of skp1(SGT1)is a highly conserved eukaryotic protein that plays a vital role in growth,development,and immunity in both animals and *** some SGT1 interactors have been identified,the molecular regulatory network of SGT1 remains ***1 serves as a co-chaperone to stabilize protein complexes such as the nucleotide-binding leucine-rich repeat(NLR)class of immune receptors,thereby positively regulating plant ***1 has also been found to be asso-ciated with the SKP1-Cullin-F-box(SCF)E3 ubiquitin ligase ***,whether SGT1 targets im-mune repressors to coordinate plant immune activation remains *** this study,we constructed a toolbox for TurbolD-and split-TurbolD-based proximity labeling(PL)assays in Nicotiana benthamiana and used the PL toolbox to explore the SGT1 interactome during pre-and post-immune *** comprehensive SGT1 interactome network we identified highlights a dynamic shift from proteins associ-ated with plant development to those linked with plant immune *** found that SGT1 interacts with Necrotic Spotted Lesion1(NSL1),which negatively regulates salicylic acid-mediated defenseby inter-fering with the nucleocytoplasmic trafficking of non-expressor of pathogenesis-related genes 1(NPR1)during N NLR-mediated response to tobacco mosaic ***1 promotes the SCF-dependent degrada-tion of NSL1 to facilitate immune activation,while salicylate-induced protein kinase-mediated phosphory-lation of SGT1further potentiates this *** NNLR,NSL1also functions in several other NLR-mediated ***,our study unveils the regulatory landscape of SGT1 and reveals a novel SGT1-NSL1 signaling module that orchestrates plant innate immunity.

关键词： suppressor of G2 allele of skp1 SGT1 proximity labeling N NLR immune receptor Necrotic Spotted Lesion 1 NSL1 salicylic acid ubiquitination

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Identification of an odorant receptor responding to sex pheromones in Spodoptera frugiperda extends the novel type-I PR lineage in moths

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Insect Science 2024年第2期31卷 489-502页

作者： Sai Zhang Emmanuelle Jacquin-Joly Nicolas Montagne Fang Liu Yang Liu Guirong Wang College of Horticulture and plant Protection Yangzhou UniversityYangzhouChina State Key laboratory for Biology of plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBejingChina Institute of Ecology and En vironmental Sciences of Paris INRAESorbonne UniversityCNRSIRDUPECUniversity of ParisVersaillesFrance Shenzhen Branch Guangdong Laboratory for Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of AgricultureAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhenChina

moths,pheromone receptors(PRs)are crucial for intraspecific sexual communication between males and *** PRs are considered as an ideal model for studying the evolution of insect PRs,and a large number of PRs have been identified and functionally characterized in different moth *** PRs were initially thought to fall into a single monophyletic clade in the odorant receptor(OR)family,but recent studies have shown that ORs in another lineage also bind type-I sex pheromones,which indicates that type-I PRs have multiple independent origins in the *** this study,we investigated whether ORs of the pest moth Spodoptera frugiperda belonging to clades closely related to this novel PR lineage may also have the capacity to bind type-I pheromones and serve as male *** the 7 ORs tested,only 1(SfruOR23)exhibited a male-biased expression ***,in vitro functional characterization showed that SfruOR23 could bind several type-I sex pheromone compounds with Z-9-tetradecenal(Z9-14:Ald),a minor component found in female sex pheromone glands,as the optimal *** addition,SfruOR23 also showed weak responses to plant volatile organic ***,we characterized an *** PR positioned in a lineage closely related to the novel PR clade,indicating that the type-I PR lineage can be extended in moths.

关键词： odorant receptor pheromone receptor lineage sex pheromone Spodoptera frugiperda

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New insights into nitric oxide biosynthesis underpin lateral root development

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Molecular plant 2024年第5期17卷 691-693页

作者： Kapuganti Jagadis Gupta Nidhi Yadav Aprajita Kumari Gary J.Loake National Institute for plant genome Research Aruna Asaf Ali MargNew Delhi 110070India Institute of Molecular plant Sciences School of Biological SciencesUniversity of EdinburghEH93BF EdinburghUK Centre for Engineering Biology School of Biological SciencesUniversity of EdinburghEH93BF EdinburghUK

In recent years,nitric oxide(NO)has emerged as a key redox signaling molecule in plants functioning in the regulation of key developmental programs and the orchestration of responses to a plethora of environmental cues(Kolbert et al.,2019).The predominant route for the transfer of NO bioactivity is through S-nitrosylation,the addition of an NO moiety to a protein cysteine thiol to form an S-nitrosothiol(Yun et al.,2011).Specificity for this process is established by the structural constraints imposed by tertiary protein structure in gating access to given cysteine redox switches and associated proteins that can either facilitate the addition or removal of the NO moiety at these residues(Umbreen et al.,2018).

关键词： moiety addition redox

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Enhancement of ionic conductivity and fracture toughness by infiltrating porous Li_(0.33)La_(0.56)TiO_(3) pellets

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Journal of Rare Earths 2024年第2期42卷 392-398,I0006页

作者： Xiaojuan Lu Mingyang Duan Jingyu Xiang Yuning Liang Songtao Liu Hebei Key lab of Power plant Flue Gas Multi-Pollutants Control Department of Environmental Science and EngineeringNorth China Electric Power UniversityBaoding071003China

Although solid-state lithium electrolytes have the potential to reduce the safety issues associated with organic liquid electrolytes,disadvantages such as low total conductivity,large interface impedance,and delamination of the interface due to cyclic stress still need to be *** solid-state lithium-ion conductor Li_(0.33)La_(0.56)TiO_(3)(LLTO) was prepared via a hydrothermal route by using CTAB as templates in this *** LLTO with micro-porous channels was obtained and the total conductivity is comparable to the non-porous *** LLTO pellets are infiltrated with the non-porous LLTO precursor solution,and the total conductivities of the infiltrated porous LLTO are all higher than those without *** infiltration,the porous LLTO calcined at 600℃ achieves the highest total conductivity,7.88×10^(-5) S/*** fracture toughness of the infiltrated LLTO is higher than that of the non-porous *** results demonstrate a new way to prepare solid-state lithium-ion conductors with high ionic conductivity and great tolerance to cyclic stress.

关键词： Perovskite Porous material Infiltration Ionic conductors Fracture toughness Rare earths

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Improving error-correcting capability in DNA digital storage via soft-decision decoding

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National Science Review 2024年第2期11卷 135-144页

作者：丁璐璐伍世刚候志浩李阿伦许亚苹冯虎潘玮华阮珏 Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural Sciences Guangdong Provincial Key laboratory of plant Molecular Breeding State Key Laboratory for Conservation and Utilization of Subtropical Agro-BioresourcesSouth China Agricultural University

Error-correcting codes(ECCs) employed in the state-of-the-art DNA digital storage(DDS) systems suffer from a trade-off between error-correcting capability and the proportion of redundancy. To address this issue, in this study, we introduce soft-decision decoding approach into DDS by proposing a DNA-specific error prediction model and a series of novel strategies. We demonstrate the effectiveness of our approach through a proof-of-concept DDS system based on Reed-Solomon(RS) code, named as Derrick. Derrick shows significant improvement in error-correcting capability without involving additional redundancy in both in vitro and in silico experiments, using various sequencing technologies such as Illumina, Pac Bio and Oxford Nanopore Technology(ONT). Notably, in vitro experiments using ONT sequencing at a depth of 7× reveal that Derrick, compared with the traditional hard-decision decoding strategy, doubles the error-correcting capability of RS code, decreases the proportion of matrices with decoding-failure by 229-fold, and amplifies the potential maximum storage volume by impressive 32 388-fold. Also, Derrick surpasses ‘state-of-the-art' DDS systems by comprehensively considering the information density and the minimum sequencing depth required for complete information recovery. Crucially, the soft-decision decoding strategy and key steps of Derrick are generalizable to other ECCs' decoding algorithms.

关键词： DNA digital storage (DDS) error-correcting code (ECC) soft-decision decoding error-correcting capability storage volume

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Silencing transformer and transformer-2 in Zeugodacus cucurbitae causes defective sex determination with inviability of most pseudomales

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Journal of Integrative Agriculture 2024年第3期23卷 938-947页

作者： Qin Ma Zizhen Fan Ping Wang Siya Ma Jian Wen Fengqin Cao Xianwu Lin Rihui Yan Key laboratory of Green Prevention and Control of Tropical plant Diseases and Pests of Ministry of Education School of Plant ProtectionHainan UniversityHaikou 570228China School of Life Sciences HainanUniversityHaikou 570228China Hainan Yazhou Bay Seed lab Sanya 572000China

transformer is a switch gene for sex determination in many insects, which cooperates with transformer-2 that is expressed in both sexes to regulate female differentiation, particularly in dipterans. Zeugodacus cucurbitae(Coquillett) is a very destructive pest worldwide, however, its sex determination pathway remains largely uncharacterized. Here, we show that the female sex ratio is sharply reduced with knockdown of either transformer or transformer-2 by RNA interference in early embryos of Z. cucurbitae. Most of the males grown from the embryos with transient transformer and transformer-2 suppression mated with wild-type females and produced mixed sex progeny, with one exception that produced only female progeny, and all of the few remaining males failed to mate with wild-type females and produced no progeny. The exceptional male and those males with mating failure were XX pseudomales as determined by the detection of Y chromosome-linked Maleness-on-the-Y, indicating that most XX pseudomales are not viable. The phenotypes of transformer and transformer-2 suggest that they play a key role in regulating sex determination and are required for female sexual development of Z. cucurbitae. Our results will be beneficial to the understanding of sex determination in Z. cucurbitae and can facilitate the development of genetic sexing strains for its biological control.

关键词： Zeugodacus cucurbitae transformer transformer-2 sex determination RNA interference biological control

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Dynamic modulation of nodulation factor receptor levels by phosphorylation-mediated functional switch of a RING-type E3 ligase during legume nodulation

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Molecular plant 2024年第7期17卷 1090-1109页

作者： Hao Li Yajuan Ou Jidan Zhang Kui Huang Ping Wu Xiaoli Guo Hui Zhu Yangrong Cao National Key lab of Agricultural Microbiology Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhan 430070China National Key lab of Agricultural Microbiology College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhan 430070China

The precise control of receptor levels is crucial for initiating cellular signaling transduction in response to specific ligands;however,such mechanisms regulating nodulation factor(NF)receptor(NFR)-mediated perception of NFs to establish symbiosis remain *** this study,we unveil the pivotal role of the NFR-interacting RING-type E3 ligase 1(NIRE1)in regulating NFR1/NFR5 homeostasis to optimize rhizobial infection and nodule development in Lotus *** demonstrated that NiRE1 has a dual function in this regulatory *** associates with both NFR1 and NFR5,facilitating their degradation through K48-linked polyubiquitination before rhizobial ***,following rhizobial inoculation,NFR1 phosphorylates NIRE1ata conserved residue,Tyr-109,inducing a functional switch in NIRE1,which enables NIRE1tomediateK63-linkedpolyubiquitination,thereby stabilizing NFR1/NFR5 in infected root *** introduction of phospho-dead NIRE1Y1osF leads to delayed nodule development,underscoring the significance of phosphorylation at Tyr-1o9 in orchestrating symbiotic ***,expression of the phospho-mimic NIRE1Y0E results in the formation of spontaneous nodules in ***,further emphasizing the critical role of the phosphorylation-dependent functional switch in *** summary,these findings uncover a fine-tuned symbiotic mechanism that a single E3 ligase could undergo a phosphorylationdependent functional switch to dynamically and precisely regulate NF receptor protein levels.

关键词： nodule symbiosis nodulation factor receptors E3 ligase ubiquitination phosphorylation protein degradation protein stabilization Lotus japonicus

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Leveraging the potential of big genomic and phenotypic data for genome-wide association mapping in wheat

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The Crop Journal 2024年第3期12卷 803-813页

作者： Moritz Lell Yusheng Zhao Jochen C.Reif Leibniz Institute of plant Genetics and Crop plant Research(IPK) Corrensstraße 3D-06466 SeelandGermany

genome-wide association mapping studies(GWAS)based on Big Data are a potential approach to improve marker-assisted selection in plant *** number of available phenotypic and genomic data sets in which medium-sized populations of several hundred individuals have been studied is rapidly *** these data and using them in GWAS could increase both the power of QTL discovery and the accuracy of estimation of underlying genetic effects,but is hindered by data heterogeneity and lack of *** this study,we used genomic and phenotypic data sets,focusing on Central European winter wheat populations evaluated for heading *** explored strategies for integrating these data and subsequently the resulting potential for *** interoperability between data sets was greatly aided by some overlapping genotypes and a linear relationship between the different phenotyping protocols,resulting in high quality integrated phenotypic *** this context,genomic prediction proved to be a suitable tool to study relevance of interactions between genotypes and experimental series,which was low in our *** to expectations,fewer associations between markers and traits were found in the larger combined data than in the individual experimental ***,the predictive power based on the marker-trait associations of the integrated data set was higher across data ***,the results show that the integration of medium-sized to Big Data is an approach to increase the power to detect QTL in *** results encourage further efforts to standardize and share data in the plant breeding community.

关键词： Big Data genome-wide association study Data integration Genomic prediction Wheat

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Identification of transient receptor potential channel genes and functional characterization of TRPA1 in Spodoptera frugiperda

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Journal of Integrative Agriculture 2024年第6期23卷 1994-2005页

作者： Yutong Zhang Hangwei Liu Song Cao Bin Li Yang Liu Guirong Wang State Key laboratory for Biology of plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518120China Institute of Evolution and Ecology School of Life SciencesCentral China Normal UniversityWuhan 430079China

Spodoptera frugiperda is a highly destructive pest that has become a global problem due to its robust reproductive and migratory *** receptor potential(TRP)channels,which constitute a vast ion channel family,play pivotal roles in sensing the external environment and maintaining internal homeostasis in *** channels have been widely investigated for their critical roles in regulating various insect behaviors in recent *** this study,we identified 15 TRP gene loci encoding 26 transcripts in the genome of *** and analyzed their expression profiles at different developmental *** results revealed that *** possesses four TRPC genes,six TRPA genes,one TRPM gene,two TRPV genes,one TRPN gene,and one TRPML gene,while a canonical TRPP is ***,the SfruTRPA1 was functionally characterized using the Xenopus oocyte expression *** results showed that SfruTRPA1 is activated by temperature increases from 20 to 45℃,and there is no significant desensitization after repeated stimuli within the same temperature ***,SfruTRPA1 is activated by certain natural chemicals,including allyl isothiocyanate(AITC)and cinnamaldehyde(CA).These findings provide valuable insights to the TRP genes in ***.

关键词： Spodoptera frugiperda transient receptor potential channel expression profile TRPA1 Xenopus oocyte

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