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Integrating Hormone- and Micromolecule- Mediated Signaling with Plasmodesmal Communication

Molecular Plant 2016年第1期9卷 46-56页

作者： Xiao Han jae-yean kim Biotechnology Research Institute Chinese Academy of Agricultural Science Beijing 100081 China Division of Applied Life Science (BK21 plus program) Plant Molecular Biology & Biotechnology Research Center Gyeongsang National University Jinju 660-701Korea

Intercellular and supracellular communications through plasmodesmata are involved in vital processes for plant development and physiological responses. Micro- and macromolecules, including hormones, RNA, and proteins, serve as biological information vectors that traffic through the plasmodesmata between cells. Previous studies demonstrated that the plasmodesmata are elaborately regulated, whereby a long queue of multiple signaling molecules forms. However, the mechanism by which these signals are coupled or coor- dinated in terms of simultaneous transport in a single channel remains a puzzle. In the last few years, several phytohormones that could function as both non-cell-autonomous signals and plasmodesmal regulators have been disclosed. Plasmodesmal regulators such as auxin, salicylic acid, reactive oxygen species, gibberellic acids, chitin, and jasmonic acid could regulate intercellular trafficking by adjusting plasmodesmal permeability. Here, callose, along with β-glucan synthase and β-glucanase, plays a critical role in regulating plasmodesmal permeability. Interestingly, most of the previously identified regulators are capable of diffusing through the plasmodesmata. Given the small sizes of these molecules, the plasmo- desmata are prominent intercellular channels that allow diffusion-based movement of those signaling molecules. Obviously, intercellular communication is under the control of a major mechanism, named a feedback loop, at the plasmodesmata, which mediates complicated biological behaviors. Prospective research on the mechanism of coupling micromolecules at the plasmodesmata for developmental signaling and nutrient provision will help us to understand how plants coordinate their development and photosynthetic assimilation, which is important for agriculture.

关键词： callose cell-to-cell movement hormone intercellular signaling plasmodesmata

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CRISPR-Mediated Engineering across the Central Dogma in Plant Biology for Basic Research and Crop Improvement

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Molecular Plant 2021年第1期14卷 127-150页

作者： Dibyajyoti Pramanik Rahul Mahadev Shelake Mi Jung kim jae-yean kim Division of Applied Life Science(BK21 Four Program) Plant Molecular Biology and Biotechnology Research CenterGyeongsang National UniversityJinju 52828Korea These authors contributed equally to this article

The central dogma(CD)of molecular biology is the transfer of genetic information from DNA to RNA to *** CD processes governing genetic flow include the cell cycle,DNA replication,chromosome packaging,epigenetic changes,transcription,posttranscriptional alterations,translation,and posttranslational *** CD processes are tightly regulated in plants to maintain genetic integrity throughout the life cycle and to pass genetic materials to next *** of various CD processes involved in gene regulation will accelerate crop improvement to feed the growing world *** technology enables programmable editing of CD processes to alter DNA,RNA,or protein,which would have been impossible in the ***,an overview of recent advancements in CRISPR tool development and CRISPR-based CD modulations that expedite basic and applied plant research is ***,CRISPR applications in major thriving areas of research,such as gene discovery(allele mining and cryptic gene activation),introgression(de novo domestication and haploid induction),and application of desired traits beneficial to farmers or consumers(biotic/abiotic stress-resilient crops,plant cell factories,and delayed senescence),are ***,the global regulatory policies,challenges,and prospects for CRISPR-mediated crop improvement are discussed.

关键词： central dogma CRISPR crop improvement gene regulation genome editing

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Arabidopsis thaliana RECEPTOR DEAD KINASE1 Functions as a Positive Regulator in Plant Responses to ABA

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Molecular Plant 2017年第2期10卷 223-243页

作者： Dhinesh Kumar Ritesh Kumar Dongwon Baek Tae-Kyung Hyun Woo Sik Chung Dae-Jin Yun jae-yean kim Division of Applied Life Sciences Plant Molecular Biology and Biotechnology Research Center Gyeongsang National University Jinju 660-701 Korea Department of Industrial Plant Science and Technology Conege of Agricultural Life and Environmental Sciences Chungbuk National University Cheongju 28644Korea These authors contributed equally to this article.

Abscisic acid （ABA） is a major phytohormone involved in important stress-related and developmental plant processes. Membrane-delimited ABA signal transduction plays an important role in early ABA signaling, but the molecular mechanisms connecting core signaling components to the plasma membrane remain un- clear. Plants have evolved a large number of receptor-like kinases （RLKs） to modulate diverse biological processes by perceiving extracellular stimuli and activating downstream signaling responses. In this study, a putative leucine-rich repeat-RLK gene named RECEPTOR DEAD KINASE1 （AtRDK1） was identified and characterized in Arabidopsis thaliana. RDK1 promoter-GUS analysis revealed that RDK1 is expressed ubiq- uitously in the various tissues in Arabidopsis, and its expression is mainly induced by ABA. In the presence of ABA, RDKl-deficient rdkl-1 and rdkl-2 lines showed significant resistance in cotyledon greening and root growth, whereas RDKl-overexpressing lines showed enhanced sensitivity. Consistently, the expres- sion of ABA-responsive genes was significantly downregulated in rdkl mutant seedlings, which were also hypersensitive to drought stress with increased water loss. Interestingly, RDK1 was found to be an atypical kinase localized to the plasma membrane and did not require its kinase activity during ABA-mediated inhi- bition of seedling development. Accordingly, RDK1 interacted in the plasma membrane with type 2C protein phosphatase ABSClSIC ACID INSENSITIVE1 （ABI1）; this interaction was further enhanced by exogenous application of ABA, suggesting that RDKl-mediated recruitment of ABI1 onto the plasma membrane is important for ABA signaling. Taken together, these results reveal an important role for RDK1 in plant responses to abiotic stress conditions in an ABA-dependent manner.

关键词： ABA abiotic stress Arabidopsis atypical kinases protein phosphatases receptor-like kinases

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Engineering drought and salinity tolerance traits in crops through CRISPR-mediated genome editing:Targets,tools,challenges,and perspectives

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Plant Communications 2022年第6期3卷 208-234页

作者： Rahul Mahadev Shelake Ulhas Sopanrao Kadam Ritesh Kumar Dibyajyoti Pramanik Anil Kumar Singh jae-yean kim Division of Applied Life Science(BK21 Four Program) Plant Molecular Biology and Biotechnology Research CenterGyeongsang National UniversityJinju 52828Korea Department of Agronomy&Plant Genetics University of MinnesotaSaint PaulMN 55108USA ICAR-National Institute for Plant Biotechnology LBS CentrePusa CampusNew Delhi 110012India Division of Life Science Gyeongsang National University501 Jinju-daeroJinju 52828Korea

Prolonged periods of drought triggered by climate change hamper plant growth and cause substantial agricultural yield losses every *** addition to drought,salinity is one of the major abiotic stresses that severely affect crop health and agricultural *** responses to drought and salinity involve multiple processes that operate in a spatiotemporal manner,such as stress sensing,perception,epigenetic modifications,transcription,post-transcriptional processing,translation,and post-translational ***,drought and salinity stress tolerance are polygenic traits influenced by genomeenvironment *** of the ideal solutions to these challenges is the development of highyielding crop varieties with enhanced stress tolerance,together with improved agricultural ***,genome-editing technologies,especially clustered regularly interspaced short palindromic repeats(CRISPR)tools,have been effectively applied to elucidate how plants deal with drought and saline *** this work,we aim to portray that the combined use of CRISPR-based genome engineering tools and modern genomic-assisted breeding approaches are gaining momentum in identifying genetic determinants of complex traits for crop *** review provides a synopsis of plant responses to drought and salinity stresses at the morphological,physiological,and molecular *** also highlight recent advances in CRISPR-based tools and their use in understanding the multi-level nature of plant adaptations to drought and salinity *** CRISPR tools with modern breeding approaches is ideal for identifying genetic factors that regulate plant stress-response pathways and for the introgression of beneficial traits to develop stress-resilient crops.

关键词： CRISPR/Cas drought tolerance genome editing polygenic traits salt tolerance trait introgression

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The Obstacles and Potential Solution Clues of Prime Editing Applications in Tomato

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BioDesign Research 2022年第1期2022卷 11-18页

作者： Tien Van Vu Ngan Thi Nguyen Jihae kim Swati Das Jinsu Lee jae-yean kim Division of Applied Life Science(BK21 FOUR Program) Plant Molecular Biology and Biotechnology Research CenterGyeongsang National UniversityJinju 660-701Republic of Korea National Key Laboratory for Plant Cell Biotechnology Agricultural Genetics InstituteKm 02Pham Van Dong RoadCo Nhue 1Bac Tu LiemHanoi 11917Vietnam Division of Life Science Gyeongsang National University501 Jinju-daeroJinju 52828Republic of Korea Nulla Bio Inc. 501 Jinju-daeroJinju 660-701Republic of Korea.

Precision genome editing is highly desired for crop *** recently emerged CRISPR/Cas technology offers great potential applications in precision plant genome engineering.A prime editing(PE)approach combining a reverse transcriptase(RT)with a Cas9 nickase and a“priming”extended guide RNA(gRNA)has shown a high frequency for precise genome modification in mammalian cells and several plant ***,the applications of the PE approach in dicot plants are still limited and *** designed and tested prime editors for precision editing of a synthetic sequence in a transient assay and for desirable alleles of 10 loci in tomato by stable *** data obtained by targeted deep sequencing also revealed only low PE efficiencies in both the tobacco and tomato *** assessment of the activities of the PE components uncovered that the fusion of RT to Cas9 and the structure of PE gRNAs(pegRNAs)negatively affected the cleaving activity of the Cas9 *** self-complementarity between the primer binding sequences(PBSs)and spacer sequence might pose risks to the activity of the Cas9 ***,modifying the pegRNA sequences by shortening or introducing mismatches to the PBSs to reduce their melting temperatures did not enhance the PE efficiency at the MADS-box protein(SlMBP21),alcobaca(SlALC),and acetolactate synthase 1(SlALS1)*** data show challenges of the PE approach in tomato,indicating that a further improvement of the PE system for successful applications is demanded,such as the use of improved expression systems for enriching active PE complexes.

关键词： CRISPR/Cas precise editing

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α1-COP modulates plasmodesmata function through sphingolipid enzyme regulation

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Journal of Integrative Plant Biology 2024年第8期66卷 1639-1657页

作者： Arya Bagus Boedi Iswanto Minh Huy Vu Jong Cheol Shon Ritesh Kumar Shuwei Wu Hobin Kang Da-Ran kim Geon Hui Son Woe Yoen kim Youn-Sig Kwak Kwang Hyeon Liu Sang Hee kim jae-yean kim Division of Applied Life Science(BK21 FOUR Program) Plant Molecular Biology and Biotechnology Research CenterGyeongsang National UniversityJinju 52828Korea College of Pharmacy and Research Institute of Pharmaceutical Sciences Kyungpook National UniversityDaegu 702-701Korea Departement of Plant Medicine Gyeongsang National UniversityJinju 52828Korea Division of Life Science Gyeongsang National UniversityJinju 52828Korea

Callose,aβ-1,3-glucan plant cell wall polymer,regulates symplasmic channel size at plasmodesmata(PD)and plays a crucial role in a variety of plant ***,elucidating the molecular mechanism of PD callose homeostasis is *** screened and identified an Arabidopsis mutant plant with excessive callose deposition at PD and found that the mutated gene wasα1-COP,a member of the coat protein I(COPI)coatomer *** report that loss of function ofα1-COP elevates the callose accumulation at PD by affecting subcellular protein localization of callose degradation enzyme Pd *** process is linked to the functions of ERH1,an inositol phosphoryl ceramide synthase,and glucosylceramide synthase through physical interactions with theα1-COP ***,the loss of function ofα1-COP alters the subcellular localization of ERH1 and GCS proteins,resulting in a reduction of Glc Cers and Glc HCers molecules,which are key sphingolipid(SL)species for lipid raft *** findings suggest thatα1-COP protein,together with SL modifiers controlling lipid raft compositions,regulates the subcellular localization of GPI-anchored PDBG2 proteins,and hence the callose turnover at PD and symplasmic movement of *** findings provide the first key clue to link the COPI-mediated intracellular trafficking pathway to the callose-mediated intercellular signaling pathway through PD.

关键词： callose coatomer proteins membrane-bound vesicle plasmodesmata sphingolipid enzymes

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Regulation of sleep by astrocytes in the hypothalamic ventrolateral preoptic nucleus

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Neural Regeneration Research 2025年第4期20卷 1098-1100页

作者： jae-Hong kim Ruqayya Afridi Il-Sung Jang Maan Gee Lee Kyoungho Suk Brain Korea 21 four KNU Convergence Educational Program of Biomedical Sciences for Creative Future Talents School of MedicineKyungpook National UniversityDaeguRepublic of Korea Department of Pharmacology School of MedicineKyungpook National UniversityDaeguRepublic of Korea Department of Pharmacology School of DentistryKyungpook National UniversityDaeguRepublic of Korea Brain Science&Engineering Institute Kyungpook National UniversityDaeguRepublic of Korea

Astrocytes are functionally dynamic cells that support neurons in multiple ways throughout an organism’s *** astrocytic regulation of neuronal activity has been increasingly recognized in recent *** are now recognized as playing a more complex role than mere bystanders in the central nervous ***,their role in regulating the sleep neurocircuitry is not well *** this perspective,we highlight the role of astrocytes in sleep modulation,with a particular focus on regulatory mechanisms related to the ventrolateral preoptic nucleus(VLPO)of the *** briefly discuss recent literature reporting the role of VLPO astrocytes in regulating sleep-associated behaviors.

关键词： sleep ventrolateral astrocytes

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Molecules “buckle up” to drive layered hybrid perovskites into single-crystal nanowires in water

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Science China Chemistry 2025年第1期68卷 3-4页

作者： Seokhyoung kim Department of Chemistry Michigan State University

Layered 2D metal halide perovskites (MHPs) are one of the most exciting candidates for next-generation light sources owing to their outstanding optoelectronic properties. These properties are readily tunable by controlling the halide composition, number of inorganic layers, and the chemistry of organic cations. Another key element that can substantially impact the materials’ functionalities is crystal morphology [1].

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Role of glutathione transferase in phase separation of FUS and TAF15 in neurons

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Neural Regeneration Research 2025年第7期20卷 1999-2000页

作者： Kiyoung kim Department of Medical Science Soonchunhyang UniversityAsanKorea

Amyotrophic lateral sclerosis(ALS)is a progressive neurodegenerative disorder characterized by the degeneration of motor neurons in the brain and spinal cord,leading to muscle weakness,paralysis,and ultimately death(Cleveland and Rothstein,2001).Frontotemporal lobar degeneration(FTLD)is a neurodegenerative disease affecting the frontal and temporal lobes of the brain,leading to changes in behavior,personality,and language(Van Langenhove et al.,2012).Both ALS and FTLD are classified as proteinopathies in which abnormal protein aggregation and accumulation in neurons contribute to the disease *** in sarcoma(FUS)is a DNA/RNA-binding protein involved in various cellular processes,including transcriptional regulation,RNA splicing,and DNA *** in the FUS gene have been linked to familial ALS,highlighting the importance of FUS in the disease pathogenesis(Vance et al.,2009).In ALS and FTLD,aberrant post-translational modifications(PTMs)of FUS,such as phosphorylation,acetylation,and methylation,have been implicated in the promotion of FUS aggregation and neurotoxicity(Choi et al.,2023).Therefore,understanding the regulatory mechanisms of FUS PTMs is crucial for developing targeted therapies against these diseases.

关键词： degeneration FUS aggregation

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Carboplatin restores neuronal toxicity in FUS-linked amyotrophic lateral sclerosis

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Neural Regeneration Research 2025年第8期20卷 2319-2320页

作者： Kiyoung kim Department of Medical Science Soonchunhyang UniversityAsanKorea

Amyotrophic lateral sclerosis(ALS),also known as Lou Geh rig's disease,is a progressive neurodegenerative disorder that affects motor neurons in the brain and spinal *** leads to muscle weakness,paralysis,and ultimate... 详细信息

关键词： paralysis sclerosis respiratory

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