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Protein ubiquitination in plant peroxisomes

Journal of Integrative plant Biology 2023年第2期65卷 371-380页

作者： Delara Akhter Yuchan Zhang Jianping Hu Ronghui Pan State Key Laboratory of Rice Biology Zhejiang Provincial Key Laboratory of Crop Genetic ResourcesCollege of Agriculture and Biotechnology&ZJU-Hangzhou Global Scientific and Technological Innovation CenterZhejiang UniversityHangzhou 310058/311200China Zhejiang Laboratory Hangzhou 311121China Department of Genetics and plant Breeding Sylhet Agricultural UniversitySylhet 3100Bangladesh Department of Energy plant Research Laboratory and plant Biology Department Michigan State UniversityEast LansingMichiganUSA Department of plant Biology Michigan State UniversityEast LansingMichiganUSA

Protein ubiquitination regulates diverse cellular processes in eukaryotic organisms,from growth and development to stress *** subjected to ubiquitination can be found in virtually all subcellular locations and organelles,including peroxisomes,singlemembrane and highly dynamic organelles ubiquitous in *** contain metabolic functions essential to plants and animals such as lipid catabolism,detoxification of reactive oxygen species(ROS),biosynthesis of vital hormones and cofactors,and *** peroxisomes possess a complex proteome with functions varying among different tissue types and developmental stages,and during plant response to distinct environmental ***,how these diverse functions are regulated at the post-translational level is poorly understood,especially in *** this review,we summarized current knowledge of the involvement of protein ubiquitination in peroxisome protein import,remodeling,pexophagy,and metabolism,focusing on plants,and referencing discoveries from other eukaryotic systems when *** on previous ubiquitinomics studies,we compiled a list of 56 ubiquitinated Arabidopsis peroxisomal proteins whose functions are associated with all the major plant peroxisomal metabolic *** discovery suggests a broad impact of protein ubiquitination on plant peroxisome functions,therefore substantiating the need to investigate this significant regulatory mechanism in peroxisomes at more depths.

关键词： peroxins peroxisome peroxisome biogenesis peroxisome metabolism pexophagy ubiquitination

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Cold storage alters the fat-trehalose trade-off,decreases the flight ability,and maintains the high survival rate and flight speed of Osmia excavata(Hymenoptera:Megachilidae)

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Insect Science 2024年第3期31卷 927-936页

作者： Yingying Song Li Liu Fang Ouyang Hongying Cui Wenxiu Guo Suhong Lv Baohua Ye Lili Li Yi Yu Xingyuan Men Institute of plant Protection Shandong Academy of Agricultural SciencesJinanChina College of plant Protection Shandong Agricultural UniversityJinanChina State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of ZoologyChinese Academy of SciencesBejingChina

Osmia solitary bees are important pollinators of various crops *** has been widely used to synchronize the emergence time of Osmia species from cocoons with the blooming time of different crops,but the fitness of Osmia after refrigeration remains ***,the effects of long-term refrigeration at 0℃on the vitality,flight ability,and metabolism of Osmia excavata,which is known as the"king of pollination"in China,were *** survival rate(>90%before 120 d),weight loss rate(<15%after 170 d),and mean flight speed of *** were not greatly affected after long-term *** content of fats,which have antifreeze and energy storage properties,was not significantly altered in *** before 130 d of refrigeration,which might explain why the survival rates and flight speed of *** remained high after long-term ***,the flight duration and distance decreased significantly(P<0.05),and both were positively correlated with the reduced trehalose levels in ***(r=[+0.69]-[+0.71];P<0.05).Overall,these findings indicate that the pollination potential of *** for various crops with different flowering periods is high after long-term refrigeration;however,long-term refrigeration may decrease pollination *** findings highlight new research directions that could improve the ecological service function of refrigerated ***.

关键词： ecological service value flight ability Osmia pollination efficiency refrigeration vitality

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Metallographic etching and microstructure characterization of NiCrMoV rotor steels for nuclear power

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International Journal of Minerals,Metallurgy and Materials 2013年第12期20卷 1164-1169页

作者： Peng Liu Feng-gui Lu Xia Liu Yu-lai Gao School of Materials Science and Engineering Shanghai University School of Materials Science and Engineering Shanghai Jiao Tong University Shanghai Turbine plant

The grain size of prior austenite has a distinct influence on the microstructure and final mechanical properties of steels. Thus, it is significant to clearly reveal the grain boundaries and therefore to precisely characterize the grain size of prior austenite. For NiCrMoV rotor steels quenched and tempered at high temperature, it is really difficult to display the grain boundaries of prior austenite clearly, which limits a further study on the correlation between the properties and the corresponding microstructure. In this paper, an effective etchant was put forward and further optimized. Experimental results indicated that this agent was effective to show the details of grain boundaries, which help analyze fatigue crack details along the propagation path. The optimized corrosion agent is successful to observe the microstructure characteristics and expected to help analyze the effect of microstructure for a further study on the mechanical properties of NiCrMoV rotor steels used in the field of nuclear power.

关键词： metallography etching austenite grain size and shape etchants nuclear power plants

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Cloning, expression and characterization of COI1 gene(AsCOI1) from Aquilaria sinensis(Lour.)Gilg

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Acta Pharmaceutica Sinica B 2015年第5期5卷 473-481页

作者： Yongcui Liao Jianhe Wei Yanhong Xu Zheng Zhang Institute of Medicinal plant Development Chinese Academy of Medical Sciences & Peking Union Medical College Hainan Branch Institute of Medicinal plant (Hainan Provincial Key Laboratory of Resources Conservation and Development of Southern Medicine) Chinese Academy of Medical Sciences and Peking Union Medical College

Aquilaria si,iensis, a kind of typically wounding-induced medicinal plant with a great economical value, is widely used in the production of traditional Chinese medicine, perfume and incense. Coronatine-insensitive protein 1 (COI1) acts as a receptor in jasmonate (JA) signaling pathway, and regulates the expression of JA-responsive genes in plant defense. However, little is known about the COI1 gene in A, sinensis, Here, based on the transcriptome data a full-length cDNA sequence of COI1 (termed as AsCOM was firstly cloned by RT PCR and rapid amplification of cDNA ends (RACE) strategies. AsCOI1 is 2330 bp in length (GenBank accession No. KM 189194), and contains a complete open frame (ORF) of 1839 bp. The deduced protein was composed of 612 amino acids, with a predicted molecular weight of 68.93 kDa and an iisoelectric point of 6.56, and was predicted to possess b-box and ERRs domains. Combining bioinformatics prediction with subcellular localization experiment analysis, AsCOI1 was appeared to locate in nucleus. AsCOI1 gene was highly expressed in roots and stems, the major organs of agarvimod formation. Methyl jasmonate (MeJA), mechanical wounding and heat stress could significantly induce the expression level of AsCOI1 gene. AsCOI1 is an early wound -responsive gene, and it likely plays sonic role in agarwood formation. (c) 2015 Chinese Pharmaceutical Association and Institute of Materia Medica Chinese Academy of Medical Sciences. Production and hosting by Elsevier B.V.

关键词： Aquilaria sinensis Agarwood Conoatine-insensitive protein 1 Rapid-amplification of cDNA ends Jasmonate Expression Subcellular localization

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Chemical Conversion of a Coumarin Derivative Containing Arylhydrazono: Crystal Structures and Fluorescence Properties

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Chinese Journal of Structural Chemistry 2019年第3期38卷 384-389页

作者： ZHANG Zheng-Yu NIU Zhi-Gang WANG En-Ju Key Laboratory of Tropical Medicinal plant Chemistry of Ministry of Education College of Chemistry & Chemical Engineering Hainan Normal University

An arylhydrazono-containing coumarin derivative(1) can undergo chemical conversions in two modes. When in the presence of Cu^(2+), a Cu^(2+)-promoted cyclization reaction was observed in aqueous acetonitrile and gives compound 2, while a ring-opening reaction occurs to give compound 3 in the absence of Cu^(2+). Both 2 and 3 were characterized by single-crystal X-ray diffraction. Compound 2 crystallizes in monoclinic C2/c space group with a = 26.606(5), b = 5.8142(12), c = 26.906(5) ?, β = 103.41(3)°, Z = 8, F(000) = 1696, μ = 0.186 mm^(-1), R = 0.0487 and wR = 0.1129. Compound 3 crystallizes in monoclinic P21/n space group with a = 9.917(2), b = 13.644(3), c = 15.912(3) ?, β = 95.38(3)°, Z = 4, F(000) = 896, μ = 0.182 mm^(-1), R = 0.0769 and w R = 0.1617. The spectroscopic studies show that compound 2 exhibits strong fluorescence emission.

关键词： coumarin benzothiazole fluorescence crystal structure

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Predicting the potential geographic distribution of Bactrocera bryoniae and Bactrocera neohumeralis(Diptera: Tephritidae) in China using MaxEnt ecological niche modeling

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Journal of Integrative Agriculture 2020年第8期19卷 2072-2082页

作者： Jing Wan QI Guo-jun MA Jun Yonglin REN WANG Rui Simon MCKIRDY Harry Butler Institute Murdoch UniversityPerthWA 6150Australia Guangdong Provincial Key Laboratory of High Technology for plant Protection Plant Protection Research InstituteGuangdong Academy of Agricultural SciencesGuangzhou 510640P.R.China Guangdong Inspection and Quarantine Technology Center Guangzhou 510623P.R.China Institute of plant Protection Chinese Academy of Agricultural SciencesBeijing 100193P.R.China

Bactrocera bryoniae and Bactrocera neohumeralis are highly destructive and major biosecurity/quarantine pests of fruit and vegetable in the tropical and subtropical regions in the South Pacific and *** these pests have not established in China,precautions must be taken due to their highly destructive ***,we predicted the potential geographic distribution of *** and *** across the world and in particular China by ecological niche modeling of the Maximum Entropy(Max Ent)model with the occurrence records of these two *** bryoniae and *** exhibit similar potential geographic distribution ranges across the world and in China,and each species was predicted to be able to distribute to over 20%of the ***,the potential geographic distribution ranges for these two fruit fly species included southern Asia,the central and the southeast coast of Africa,southern North America,northern and central South America,and *** within China,most of the southern Yangtze River area was found suitable for these ***,southern China was considered to have the highest risk of *** and *** *** study identifies the regions at high risk for potential establishment of *** and *** in the world and in particular China,and informs the development of inspection and biosecurity/quarantine measures to prevent and control their invasions.

关键词： fruit fly Bactrocera bryoniae Bactrocera neohumeralis ecological niche modeling MaxEnt potential geographic distribution habitat suitability

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Genome of a citrus rootstock and global DNA demethylation caused by heterografting

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Horticulture Research 2021年第1期8卷 1166-1178页

作者： Yue Huang Yuantao Xu Xiaolin Jiang Huiwen Yu Huihui Jia Chunming Tan Gang Hu Yibo Hu Muhammad Junaid Rao Xiuxin Deng Qiang Xu Key Laboratory of Horticultural plant Biology(Ministry of Education) Huazhong Agricultural University430070 WuhanChina

Grafting is an ancient technique used for plant propagation and improvement in horticultural crops for at least 1,500 *** plants,with a seed-to-seed cycle of 5–15 years,are among the fruit crops that were probably domesticated by *** trifoliata,a widely used citrus rootstock,can promote early flowering,strengthen stress tolerance,and improve fruit quality via scion–rootstock ***,we report its genome assembly using PacBio *** obtained a final genome of 303 Mb with a contig N50 size of 1.17Mb and annotated 25,680 protein-coding *** methylome and transcriptome analyses indicated that the strong adaptability of *** is likely attributable to its special epigenetic modification and expression pattern of resistance-related *** by using sweet orange as scion and *** as rootstock and autografting using sweet orange as both scion and rootstock were performed to investigate the genetic effects of the ***-base methylome analysis indicated that *** as a rootstock caused DNA demethylation and a reduction in 24-nt small RNAs(sRNAs)in scions compared to the level observed with autografting,implying the involvement of sRNA-mediated graft-transmissible epigenetic modifications in citrus *** together,the assembled genome for the citrus rootstock and the analysis of graft-induced epigenetic modifications provide global insights into the genetic effects of rootstock–scion interactions and grafting biology.

关键词： orange crops stock

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Is there a latitudinal gradient in the proportion of species with spinescence?

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Journal of plant Ecology 2017年第2期10卷 294-300页

作者： Marianne L.Tindall Fiona J.Thomson Shawn W.Laffan Angela T.Moles School of Biological Earth and Environmental SciencesUNSW AustraliaNSW 2052Australia Ecosystems&Global Change team Landcare ResearchLincoln 7640New Zealand

Aims We aimed to test the hypothesis that plants that grow at lower lati-tudes will be better structurally defended than plants from higher *** We collated binary spinescence data for 5145 species across Australia and New *** dataset spanned 35°of latitude,and included over 1 million observations,making it the larg-est empirical study ever conducted for a single physical defence trait.A weighted logistic regression was applied first within Australia and New Zealand separately,and then across the com-bined *** Findings There was no significant latitudinal gradient in the proportion of spe-cies with spinescence in Australia or New Zealand,or in the overall *** is,plant species are no more likely to be defended by spines at low latitudes than at high *** finding is counter to the idea that plant defences increase with latitude due to increased selective pressure from higher levels of *** suggest that future studies should investigate the relationship between herbivory and defence directly,without using latitude as a proxy.

关键词： latitude physical defence plant-herbivore interactions spine thorn structural defence

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Unlikely heroes on the long and winding road to potatoinbreeding

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aBIOTECH 2023年第3期4卷 267-271页

作者： Luca Comai Department of plant Biology and Genome Center University of California DavisDavisCA 95616USA

Conversion of potato from a tetraploid, heterozygous, vegetatively propagated crop to a diploid F1hybrid, propagated via botanical seed, would constitute a considerable advance for global agriculture,but faces multiple challenges. One such challenge is the difficulty in inbreeding potato, which involvespurging deleterious alleles from its genome. This commentary discusses possible reasons for thisdifficulty and highlights a recent sequence-based effort to classify SNP variation, in potato germplasm,according to its deleterious potential. Tools and strategies connected to this database may facilitatedevelopment of F1 hybrids.

关键词： Hybrid seed Deleterious alleles Inbreeding Genetic load Clonal propagation

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Trehalose Biosynthesis in Response to Abiotic Stresses

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Journal of Integrative plant Biology 2008年第10期50卷 1223-1229页

作者： Mihaela Iordachescu Ryozo Imai Crop Cold Tolerance Research team National Agricultural Research Center for Hokkaido Region National Agriculture and Food Research Organization Hitsujigaoka 1 Toyohira-ku Sapporo 062-8555 Japan

Trehalose is a non-reducing disaccharide that is present in diverse organisms ranging from bacteria and fungi to invertebrates, in which it serves as an energy source, osmolyte or protein/membrane protectant. The occurrence of trehalose and trehalose biosynthesis pathway in plants has been discovered recently. Multiple studies have revealed regulatory roles of trehalose-6-phosphate, a precursor of trehalose, in sugar metabolism, growth and development in plants. Trehalose levels are generally quite low in plants but may alter in response to environmental stresses. Transgenic plants overexpressing microbial trehalose biosynthesis genes have been shown to contain increased levels of trehalose and display drought, salt and cold tolerance. In-silico expression profiling of all Arabidopsis trehalose-6-phosphate synthases （TPSs） and trehalose-6-phosphate phosphatases （TPPs） revealed that certain classes of TPS and TPP genes are differentially regulated in response to a variety of abiotic stresses. These studies point to the importance of trehalose biosynthesis in stress responses.

关键词： abiotic stress Arabidopsis cold stress drought stress rice stress tobacco trehalose trehalose biosynthesis.

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