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ClBBM and ClPLT2 function redundantly during both male and female gametophytes development in watermelon

Horticultural Plant Journal 2025年第1期11卷 323-335页

作者： Qiyan Liu Dongfen Han Jinfan Chen Jie Wang Denghu Cheng Xiner Chen Jiao Jiang Shujuan Tian Jiafa Wang Man Liu Haizheng Xiong Li Yuan State Key laboratory of Crop stress Biology for Arid Areas College of HorticultureNorthwest A&F UniversityYanglingShaanxi 712100China Department of Horticulture University of ArkansasFayettevilleAR 72701USA

As a prerequisite for sexual reproduction,gametophyte development is an interesting process involving cell proliferation,differentiation and *** has been extensively explored in model plants,but the regulatory mechanism of gametophyte development largely remains unknown in Cucurbitaceae *** present study,we have shown that watermelon ClBBM and ClPLT2,two AP2/ERF transcription factors,participated in both male and female gametophyte *** and Clplt2 single mutants resembled wild-type phenotypes in both vegetative and reproductive *** Clbbm/Clplt2 double mutant showed partial pollen abortion and bore less seeds comparing to *** results indicated that the abnormal pollen grains were caused by premature tapetum degeneration,and reduced seed-set was due to faulty embryo sac *** and ClPLT2 were expressed in FG4 embryo sacs,and their transcripts were also detectable in the tapetum and microspore of stage 9 anthers,which was consistent with developmental stages of defective phenotypes observed in double *** expression of genes essential for tapetum development,ClATM1,ClAMS,ClMS1 and ClMS188,was decreased in Clbbm/Clplt2 double ***,the transcriptome analysis indicated that ClBBM and ClPLT2 participated in tapetum and pollen wall development by regulate cell cycle,transmembrane transport,glucan and cellulose metabolic ***,ClBBM and ClPLT2 were functionally redundant in regulating gametophyte development in watermelon,and their functions differ from their homologous genes in model plant Arabidopsis.

关键词： Watermelon Gametophyte Male sterility Seedless

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Heat shock transcription factors regulate thermotolerance gene networks in tomato(Solanum lycopersicum)flower buds

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Horticultural Plant Journal 2025年第1期11卷 199-210页

作者： Hongwei Li Yun Liu Yongyao Li Qinqin Yang Tailai Yang Zhi Zhou Yafei Li Na Zhang Yaqing Lyu Yingfang Zhu Tao Lin College of Horticulture China Agricultural UniversityBeijing 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 SciencesShenzhenGuangdong 518124China State Key laboratory of Crop stress Adaptation and Improvement School of Life SciencesHenan UniversityKaifengHenan 450046China

Tomato(Solanum lycopersicum)is an important fruit and vegetable crop in *** fertility of tomato reproductive organs can be dramatically decreased when ambient temperatures rise above 35°C,reducing tomato fruit *** is necessary to identify transcription factors(TFs)and target genes involved in heat stress response(HSR)signaling cascades in tomato flower buds to improve tomato plant *** this study,we profiled genes expressed in three developmental stages of tomato flower *** and turquoise modules for heat stress(HS)were identified through gene co-expression network analysis,and the genes within these modules were enriched in HS-related *** focusing on the TFs in the two modules,we identified several novel HSR-related TFs,including SlWRKY75,SlMYB117,and ***,homology analysis illustrated a conserved signaling cascade in ***,we identified and experimentally validated four HSF-regulated genes,namely SlGrpE,SlERDJ3A,SlTIL,and SlPOM1,that likely modulate thermotolerance in *** results provide a high-resolution atlas of gene expression during tomato flower bud development under HS conditions,which is a valuable resource for uncovering potential regulatory networks associated with the HSR in tomato.

关键词： Tomato Heat stress Transcriptome Transcription factor Thermotolerance

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Protective action of glutamine in rats with severe acute liver failure

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World Journal of Hepatology 2019年第3期11卷 273-286页

作者： Elizangela G Schemitt Renata M Hartmann Josieli R Colares Francielli Licks Jéferson O Salvi Cláudio A Marroni Norma P Marroni laboratory of Experimental Hepatology and Gastroenterology Hospital de Clínicas de Porto Alegre laboratory of oxidative stress and antioxidants Universidade Luterana do Brasil

BACKGROUND Severe acute liver failure(SALF) is a rare, but high-mortality, rapidly evolving syndrome that leads to hepatocyte degeneration with impaired liver ***(TAA) is a known xenobiotic, which promotes the increase of the formation of reactive oxygen species. Erythroid 2-related factor 2(Nrf2) activates the antioxidant protection of cells. Studies have evidenced the involvement of inflammatory mediators in conditions of oxidative *** To evaluate the antioxidant effects of glutamine on Nrf2 activation and NFκBmediated inflammation in rats with TAA-induced *** Male Wistar rats(n = 28) were divided into four groups: control,control+glutamine, TAA, and TAA + glutamine. Two TAA doses(400 mg/kg)were administered intraperitoneally, 8 h apart. Glutamine(25 mg/kg) was administered at 30 min, 24 h, and 36 h. At 48 h, blood was collected for liver integrity analysis [aspartate aminotransferase(AST), alanine aminotransferase(ALT), and alkaline phosphatase(ALP)]. The liver was harvested for histology and assessment of oxidative stress [thiobarbituric acid-reactive substances(TBARS), catalase(CAT), glutathione peroxidase(GPx), glutathione S-transferase(GST), glutathione(GSH), Nrf2, Kelch-like ECH-associated protein 1(Keap1),NADPH quinone oxidoreductase1(NQO1), superoxide dismutase(SOD)] and inflammatory *** TAA caused disruption of the hepatic parenchyma, with inflammatoryinfiltration, massive necrosis, and ballooning degeneration. Glutamine mitigated this tissue damage, with visible regeneration of hepatic parenchyma; decreased TBARS(P < 0.001), GSH(P < 0.01), IL-1β, IL6, and TNFα levels(P <0.01) in hepatic tissue; and decreased blood levels of AST, ALT, and ALP(P <0.05). In addition, CAT, GPx, and GST activities were restored in the glutamine group(P<0.01, P <0.01, and P <0.001, respectively vs TAA alone). Glutamine increased expression of Nrf2(P < 0.05), NQO1, and SOD(P < 0.01), as well as levels of IL-10(P <0.001), while decr

关键词： Thioacetamide Cytokines oxidative stress Inflammation Liver failure Chemical and drug induced liver injury Glutamine

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Physiological and agronomic effects of regulated-deficit irrigation on soybean grown under arid climatic conditions

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The Crop Journal 2025年第1期13卷 281-291页

作者： Bouthayna El Amine Fatema Mosseddaq Abdelhadi Ait Houssa Ahmed Bouaziz Lhoussaine Moughli Abdallah Oukarroum Hassan II Institute of Agronomy and Veterinary Medicine Department of Crop ProductionProtection and BiotechnologyRabat 10100Morocco Mohammed VI Polytechnic University Plant Stress Physiology LaboratoryAgrobiosciencesBenguerir 43150Morocco Providence Verte Company Agricultural Training and Research CenterRabat 10020Morocco

Drought is one of the most severe environmental stresses affecting soybean growth and development,especially in arid and semi-arid *** aim of this experiment is to evaluate the effect of regulated deficit irrigation during the vegetative stages on soybean plants and determine the amount irrigation water can be reduced without affecting the physiological parameters,the crop phenology,and the yield of the soybean *** field experiments were conducted during two irrigation crop seasons(2021 and 2022)in Louata,*** results showed that regulated deficit irrigation regimes during the vegetative stages was combined with high temperatures and low air humidities during the beginning of flowering and the pod filling stage during 2021 in comparison with 2022,especially for 25%CWR(crop water requirements).Regulated deficit irrigation regimes reduced the stomatal conductance by 46%and 52%respectively during the first and second growing seasons by limiting CO2 intake for the Calvin *** stomata closure increased the leaf temperature and affected the functioning of the photosynthetic apparatus by damaging the chlorophyll pigments and impairment of electron transport chains in *** transition from regulated deficit irrigation to 100%CWR at the beginning of flowering(R1)compensated for the photosynthetic loss,improved the growth and development of soybean plants and enhanced the yield and its components for 50%and 75%*** adaptative mechanism such as the remobilization of the carbon reserved in the stems and leaves(vegetative tissues)to the grains improved the grain yield by 36.7%during 2021 and by 32.2%during 2022 *** consequently improved the water use efficiency,the water productivity of soybean for 50%and 75%CWR and contributed to water saving with an average of 60 mm per growing season.

关键词： Soybean Regulated-deficit irrigation Vegetative phase Soil water content Plant physiology and yield

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The long noncoding RNA ALEX1 confers a functional phase state of ARF3 to enhance rice resistance to bacterial pathogens

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Molecular Plant 2025年第1期18卷 114-129页

作者： Meng-Qi Lei Rui-Rui He Yan-Fei Zhou Lu Yang Zhen-Fei Zhang Chao Yuan Wen-Long Zhao Yu Cheng Jian-Ping Lian Yu-Chan Zhang Wen-Tao Wang Yang Yu Yue-Qin Chen Guangdong Provincial Key laboratory of Plant stress Biology State Key Laboratory for BiocontrolSchool of Life SciencesSun Yat-Sen UniversityGuangzhou 510275P.R.China Guangdong Key laboratory of Crop Germplasm Resources Preservation and Utilization Agro-biological Gene Research CenterGuangdong Academy of Agricultural SciencesGuangzhou 510640P.R.China Plant Protection Research Institute Guangdong Academy of Agricultural SciencesGuangzhou 510640P.R.China

Rice bacterial blight is a devastating disease worldwide,causing significant yield *** how plants defend against microbial infection is critical for sustainable crop *** this study,we show that ALEX1,a previously identified pathogen-induced long noncoding RNA,localizes to the nucleus and directly binds AUXIN RESPONSE FACTOR 3(ARF3).We showed that ARF3 forms the condensates in the nucleus via its intrinsically disordered middle region(MR),and that these ARF3 condensates display solid-like *** further revealed that ALEX1 directly binds the MR of ARF3 to regulate ARF3 condensate dynamics and promote ARF3 *** dispersed,dimeric form of ARF3,referred to as its functional phase state,enhances its ability to transcriptionally repress the expression of downstream target genes such as JAZ13,thereby modulating the jasmonic acid signaling pathway and enhancing pathogen resistance in ***,this study reveals the role of a long noncoding RNA in regulating protein condensation and complex assembly,thus contributing to plant pathogen resistance.

关键词： lncRNA Xoo ARF3 protein condensates

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oxidative degradation and upcycling of polyethylene wastes

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Science China Chemistry 2025年第2期68卷 430-443页

作者： Yizhen Che Yanfen Wu Zhiqiang Niu State Key laboratory of Chemical Engineering Department of Chemical EngineeringTsinghua UniversityBeijing 100084China Ordos laboratory Ordos 017010China

Plastics have become omnipresent in modern life due to their versatility and ***,this convenience comes at the cost of substantial waste *** inherent chemical stability of plastics complicates its recycling,leading to environmental pollution and ecological *** mini-review highlights recent advancements in addressing this challenge by oxidative transformation of polyethylene(PE)into new functional polymers,value-added chemicals,and carbon-based *** first discuss the introduction of hydroxyl,carbonyl groups onto PE with a focus on the functionalization degree and ***,approaches for PE oxidation into dicarboxylic acids and short-chain oxidized PE are described and compared,with an emphasis on the tandem reactions for converting mixed dicarboxylic acids into other value-added *** also briefly discuss the oxidative transformation of PE into carbon-based materials and summarize the progress in qualitative and quantitative analysis of oxidation ***,we conclude this mini-review by highlighting the challenges and opportunities in the field.

关键词： oxidation polyethylene upcycling chemical conversion plastics

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Copper homeostasis and neurodegenerative diseases

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Neural Regeneration Research 2025年第11期20卷 3124-3143页

作者： Yuanyuan Wang Daidi Li Kaifei Xu Guoqing Wang Feng Zhang International Research laboratory of Ethnomedicine of Ministry of Education Key Laboratory of Basic Pharmacology of Ministry of EducationLaboratory Animal Center and Key Laboratory of Basic Pharmacology of Guizhou ProvinceZunyi Medical UniversityZunyiGuizhou ProvinceChina

Copper,one of the most prolific transition metals in the body,is required for normal brain physiological activity and allows various functions to work normally through its range of *** homeostasis is meticulously maintained through a complex network of copper-dependent proteins,including copper transporters(CTR1 and CTR2),the two copper ion transporters the Cu-transporting ATPase 1(ATP7A)and Cu-transporting beta(ATP7B),and the three copper chaperones ATOX1,CCS,and *** in copper homeostasis can lead to either the deficiency or accumulation of copper in brain *** evidence suggests that abnormal copper metabolism or copper binding to various proteins,including ceruloplasmin and metallothionein,is involved in the pathogenesis of neurodegenerative ***,the exact mechanisms underlying these processes are not *** is a potent oxidant that increases reactive oxygen species production and promotes oxidative *** reactive oxygen species levels may further compromise mitochondrial integrity and cause mitochondrial *** oxygen species serve as key signaling molecules in copper-induced neuroinflammation,with elevated levels activating several critical inflammatory ***,copper can bind aberrantly to several neuronal proteins,including alphasynuclein,tau,superoxide dismutase 1,and huntingtin,thereby inducing neurotoxicity and ultimately cell *** study focuses on the latest literature evaluating the role of copper in neurodegenerative diseases,with a particular focus on copper-containing metalloenzymes and copper-binding proteins in the regulation of copper homeostasis and their involvement in neurodegenerative disease *** synthesizing the current findings on the functions of copper in oxidative stress,neuroinflammation,mitochondrial dysfunction,and protein misfolding,we aim to elucidate the mechanisms by which copper contributes to a wide range of heredit

关键词： Alzheimer's disease amyotrophic lateral sclerosis disease copper homeostasis copper toxicity Huntington's disease Menkes'disease multiple sclerosis neurodegenerative disease Parkinson's disease Wilson's disease

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High-throughput experimentation and machine learning-promoted synthesis of α-phosphoryloxy ketones via Ru-catalyzed P(O)O–H insertion reactions of sulfoxonium ylides

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Science China Chemistry 2025年第2期68卷 679-686页

作者： An Lin Jingyuan Liu Yougen Xu Haiting Wu Yating Chen Yan Zhang Lebin Su Xiaodan Zhao Kuangbiao Liao Institute of Organic Chemistry&MOE Key laboratory of Bioinorganic and Synthetic Chemistry School of ChemistrySun Yat-sen UniversityGuangzhou 510006China Guangzhou National laboratory Guangzhou 510005China Bioland laboratory Guangzhou 510005China

Herein,we report a novel and highly efficient method for the synthesis ofα-phosphoryloxy carbonyl compounds via Rucatalyzed P(O)O–H insertion reactions of sulfoxonium ylides and phosphinic acids,with the assistance of high-throughput experimentation(HTE)and machine learning(ML).A variety of P(O)O−H derivatives,including diarylphosphates,alkyl phosphates,and alkoxyphosphates,are competent candidates to react with sulfoxonium ylides in this transformation,and variousα-phosphoryloxy carbonyls and propylene phosphates are directly *** approach utilizes readily available sulfoxonium ylide as a carbene precursor,and features mild conditions,operational simplicity,and broad functional groups tolerance,and could be used for late-stage functionalization of structurally complex bioactive ***,a conducive exploration of the reaction space is also conducted(756 reactions)and a machine learning model for reaction yield prediction has been developed and applied,showcasing the practical application of this newly workflow(HTE-ML)in the field of synthetic chemistry.

关键词： α-phosphoryloxy ketones high-throughput experimentation machine learning P(O)O-H insertion sulfoxonium ylides

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Morphology and phylogeny of two species of Bathypathes from the tropical western Pacific,with description of a new species

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Journal of Oceanology and Limnology 2025年第1期43卷 248-260页

作者： Ting LÜ Zifeng ZHAN Kuidong XU laboratory of Marine Organism Taxonomy and Phylogeny Qingdao Key Laboratory of Marine Biodiversity and ConservationInstitute of OceanologyChinese Academy of SciencesQingdao 266071China laboratory for Marine Biology and Biotechnology Laoshan LaboratoryQingdao 266237China University of Chinese Academy of Sciences Beijing 100049China

The black coral genus Bathypathes Brook,1889 represents a relatively diverse and ecologically important assemblage comprising the deep-sea hard substrate *** phylogenetic investigations have revealed the polyphyletic nature of Bathypathes,urging further morphological analysis to understand its *** combing morphological and molecular data,we describe Bathypathes multifurcata *** report *** Molodtsova,Opresko&Wagner,2022based on the specimens collected from the tropical western *** phylogenetic topology reconstructed using nuclear ITS1-5.8S-ITS2 and three mitochondrial fragments suggests the separation of Bathypathes into four *** analysis of morphological characters,particularly the colony branch and pinnule patterns also roughly classify Bathypathes into four morphological groups A–*** A is characterized by the unbranched colony and the subopposite arrangement of *** contrast to Group A,Groups B–D have the alternately arranged *** these,Group C exhibits a distinctly long unpinnulated stem compared to Groups B and *** B has unbranched colony,relatively short unpinnulated stem,and spines on pinnules have blunt *** Group D,large colonies(higher than 40 cm)have one or a few branches,small colonies(less than 40 cm)are unbranched,and spines on pinnules have acute *** data particularly those species without sequences are necessary to verify the classification of these groups.

关键词： Antipatharia black coral taxonomy phylogeny seamount western Pacific

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A new multi-DOF envelope forming process for fabricating spiral bevel gears with back taper tooth

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Chinese Journal of Aeronautics 2025年第1期38卷 568-585页

作者： Xinghui HAN Yanhui WANG Lin HUA Wuhao ZHUANG Fangyan ZHENG Wei FENG Hubei Key laboratory of Advanced Technology for Automotive Components Wuhan University of TechnologyWuhan 430070China Hubei Longzhong laboratory Xiangyang 441000China

Spiral bevel gears are critical transmission components,and are widely used in the aerospace *** paper proposes a new multi-DOF envelope forming process for fabricating spiral bevel ***,the multi-DOF envelope forming principle of spiral bevel gears is ***,the design methods for the envelope tool geometry and movement are proposed based on the envelope geometry and movement ***,the metal flow and tooth filling laws are revealed through 3D FE simulation of the multi-DOF envelope forming process of a typical spiral bevel ***,a new method for separating the envelope tool and the formed spiral bevel gear with back taper tooth is proposed to avoid their ***,experiments on multi-DOF envelope forming of this typical spiral bevel gear are conducted using new heavy load multi-DOF envelope forming *** simulation and experimental results show the feasibility of the proposed multi-DOF envelope forming process for fabricating spiral bevel gears with back taper tooth and the corresponding process design methods.

关键词： Multi-DOF envelope forming Spiral bevel gear Back taper tooth Metal flow Process design

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