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Plant regeneration in the new era:from molecular mechanisms to biotechnology applications

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Science China(Life Sciences) 2024年第7期67卷 1338-1367页

作者： Chunli Chen Yuxin Hu Momoko Ikeuchi Yuling Jiao Kalika Prasad ying hua su Jun Xiao Lin Xu Weibing Yang Zhong Zhao Wenkun Zhou Yun Zhou Jian Gao Jia-Wei Wang National Key Laboratory for Germplasm Innovation&Utilization of Horticultural Crops Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhan 430070China College of Life Science and Technology Huazhong Agricultural UniversityWuhan 430070China Key Laboratory of Plant Molecular Physiology Institute of BotanyChinese Academy of Sciences(CAS)China National Botanical GardenBeijing 100093China Division of Biological Sciences Graduate School of Science and TechnologyNara Institute of Science and TechnologyNara 630-0192Japan State Key Laboratory of Protein and Plant Gene Research School of Life SciencesPeking UniversityBeijing 100871China Peking-Tsinghua Center for Life Sciences Center for Quantitative BiologyAcademy for Advanced Interdisciplinary StudiesPeking UniversityBeijing 100871China Indian Institute of Science Education and Research Pune 411008IndiaThiruvananthapuram 695551India State Key Laboratory of Wheat Improvement College of Life SciencesShandong Agricultural UniversityTai’an 271018China Sino-German Joint Research Center on Agricultural Biology Shandong Agricultural UniversityTai’an 271018China Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental Biology(IGDB)CASBeijing 100101China CAS-JIC Centre of Excellence for Plant and Microbial Science(CEPAMS) IGDBCASBeijing 100101China National Key Laboratory of Plant Molecular Genetics CEMPSInstitute of Plant Physiology and Ecology(SIPPE)CASShanghai 200032China CEPAMS SIPPECASShanghai 200032China Hefei National Laboratory for Physical Sciences at the Microscale CEMPSSchool of Life SciencesDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefei 230027China State Key Laboratory of Plant Environmental Resilience College of Biological SciencesChina Agricultural UniversityBeijing 100193China Department of Botany and Plant Pathology and Center for Plant Biology Purdue UniversityWest Lafayette 47907USA School of Life Science and Technology Shang

Plants or tissues can be regenerated through various *** animal regeneration,cell totipotency and pluripotency are the molecular basis of plant *** systematic studies on Arabidopsis thaliana gradually unravel the fundamental mechanisms and principles underlying plant ***,plant hormones,cell division,epigenetic remodeling,and transcription factors play crucial roles in reprogramming somatic cells and reestablishing meristematic *** research on basal non-vascular plants and monocot crops has revealed that plant regeneration differs among species,with various plant species using distinct mechanisms and displaying significant differences in regenerative *** multi-omics studies at the single-cell level,tracking plant regeneration processes in real-time,and deciphering the natural variation in regenerative capacity will ultimately help understand the essence of plant regeneration,improve crop regeneration efficiency,and contribute to future crop design.

关键词： apical meristem model species regeneration phytohormone plant cell reprogramming somatic embryogenesis

Auxin-Cytokinin Interaction Regulates Meristem Development

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Molecular Plant 2011年第4期4卷 616-625页

作者： ying-hua su Yu-Bo Liu Xian-Sheng Zhang State Key Laboratory of Crop Biology College of Life Sciences Shandong Agricultural University Taian Shandong 271018 China

Plant hormones regulate many aspects of plant growth and development. Both auxin and cytokinin have been known for a long time to act either synergistically or antagonistically to control several significant developmental processes, such as the formation and maintenance of meristem. Over the past few years, exciting progress has been made to reveal the molecular mechanisms underlying the auxin-cytokinin action and interaction. In this review, we shall briefly discuss the major progress made in auxin and cytokinin biosynthesis, auxin transport, and auxin and cytokinin signaling. The frameworks for the complicated interaction of these two hormones in the control of shoot apical meristem and root apical meristem formation as well as their roles in in vitro organ regeneration are the major focus of this review.

关键词： Auxin cytokinin interaction shoot meristem root meristem development.

Induction of Somatic Embryos in Arabidopsis Requires Local YUCCA Expression Mediated by the Down-Regulation of Ethylene Biosynthesis

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Molecular Plant 2013年第4期6卷 1247-1260页

作者： Bo Bai ying hua su Jia Yuan Xian Sheng Zhang State Key Laboratory of Crop Biology College of Life Sciences Shandong Agricultural University Taian Shandong 271018 China

Somatic embryogenesis is an important experimental model for studying cellular and molecular mechanisms of early embryo development. Although it has long been known that removal of exogenous auxin from medium results in somatic embryogenesis, the mechanisms underlying the initiation of somatic embryos （SEs） are poorly understood. In this study, we showed that YUCCAs （YUCs） encoding key enzymes in auxin biosynthesis are required for SE induction in Arabidopsis. To identify other factors mediating SE initiation, we performed transcriptional profiling and gene expres- sion analysis. The results showed that genes involved in ethylene biosynthesis and its responses were down-regulated during SE initiation. Ethylene level decreased progressively during SE initiation, whereas treatment with the metabolic precursor of ethylene, 1-aminocyclopropane-l-carboxylic acid （ACC）, or mutation of ETHYLENE-OVERPRODUCTION1 （ET01） disrupted SE induction, suggesting that ethylene plays a role in this process. suppression of SE induction was also observed in the constitutive triple response 1 （ctrl） mutant, in which ethylene signaling was enhanced. These results indicate that down-regulation of not only ethylene biosynthesis, but also ethylene response is critical for SE induction. We further showed that ethylene disturbed SE initiation through inhibiting YUC expression that might be involved in local auxin biosynthesis and subsequent auxin distribution. Our results provide new information on the mechanisms of hormone-regulated SE initiation.

关键词： YUC genes auxin biosynthesis auxin distribution ethylene somatic embryo induction Arabidopsis

Application of Wox2a in transformation of recalcitrant maizegenotypes

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aBIOTECH 2023年第4期4卷 386-388页

作者： Qiangbo Liu Xian Sheng Zhang ying hua su National Key Laboratory of Wheat Improvement College of Life SciencesShandong Agricultural UniversityTai’an 271018China

The genetic transformation plays an important role in plant gene functional analysis and its geneticimprovement. However, only a limited number of maize germplasms can be routinely transformed. Themaize gene Wuschel-like homeobox protein 2a (Wox2a) was shown to play a crucial role in promotingthe formation of embryonic cells and enhancing the efficiency of genetic transformation in maize. Thiscommentary discusses the mechanism by which the Wox2a gene contributes to the variation inembryogenic tissue culture response among different maize inbred lines. In addition, the frequency andintensity of Wox2a or Wus2/Bbm vector-induced somatic embryogenesis was also discussed. Theapplication of Wox2a in transformation of recalcitrant maize genotypes could well accelerate thedevelopment of maize genetic improvement.

关键词： Genetic transformation Maize Wox2a Recalcitrant maize genotypes

Regulation of cell reprogramming by auxin during somatic embryogenesis

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aBIOTECH 2020年第3期1卷 185-193页

作者： Li Ping Tang Xian Sheng Zhang ying hua su State Key Laboratory of Crop Biology College of Life SciencesShandong Agricultural UniversityTai’an 271018ShandongChina

How somatic cells develop into a whole plant is a central question in plant developmental *** powerful ability of plant cells is recognized as their *** embryogenesis is an excellent example and a good research system for studying plant cell ***,very little is known about the molecular basis of cell reprogramming from somatic cells to totipotent cells in this *** somatic embryogenesis from immature zygotic embryos in Arabidopsis,exogenous auxin treatment is required for embryonic callus formation,but removal of exogenous auxin inducing endogenous auxin biosynthesis is essential for somatic embryo(SE)*** expression of specific transcription factor genes,such as "LAFL" and BABY BOOM(BBM),can induce SEs without exogenous growth *** embryogenesis can also be triggered by stress,as well as by disruption of chromatin remodeling,including PRC2-mediated histone methylation,histone deacetylation,and PKL-related chromatin *** is evident that embryonic identity genes are required and endogenous auxin plays a central role for cell reprogramming during the induction of ***,we focus on reviewing the regulation of cell reprogramming for somatic embryogenesis by auxin.

关键词： Somatic embryogenesis Auxin Cell reprogramming Transcription factors Chromatin remodeling

Cell Fate Switch during In Vitro Plant Organogenesis

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Journal of Integrative Plant Biology 2008年第7期50卷 816-824页

作者： Xiang Yu Zhao ying hua su ZhiJuan Cheng Xian Sheng Zhang State Key Laboratory of Crop Biology College of Life Sciences Shandong Agricultural University Tai'an 271018 China

Plant mature cells have the capability to reverse their state of differentiation and produce new organs under cultured conditions. Two phases, dedifferenUation and redifferentiation, are commonly characterized during in vitro organogenesis. In these processes, cells undergo fate switch several times regulated by both extrinsic and intrinsic factors, which are associated with reentry to the cell cycle, the balance between euchromatin and heterochromatin, reprogramming of gene expression, and so forth. This short article reviews the advances in the mechanism of organ regeneration from plant somatic cells in molecular, genomic and epigenetic aspects, aiming to provide important information on the mechanism underlying cell fate switch during in vitro plant organogenesis.

关键词： cell fate dedifferentiation plant organogenesis redifferentiation regeneration.

Plant cell totipotency: Insights into cellular reprogramming

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Journal of Integrative Plant Biology 2021年第1期63卷 228-240页

作者： ying hua su Li Ping Tang Xiang Yu Zhao Xian Sheng Zhang State Key Laboratory of Crop Biology College of Life SciencesShandong Agricultural UniversityTai'an 271018China

Plant cells have a powerful capacity in their propagation to adapt to environmental change, given that a single plant cell can give rise to a whole plant via somatic embryogenesis without the need for fertilization. The reprogramming of somatic cells into totipotent cells is a critical step in somatic embryogenesis. This process can be induced by stimuli such as plant hormones, transcriptional regulators and stress. Here, we review current knowledge on how the identity of totipotent cells is determined and the stimuli required for reprogramming of somatic cells into totipotent cells. We highlight key molecular regulators and associated networks that control cell fate transition from somatic to totipotent cells. Finally,we pose several outstanding questions that should be addressed to enhance our understanding of the mechanisms underlying plant cell totipotency.

关键词： cell reprogramming plant cell totipotency somatic embryogenesis totipotent cell

Synthesis and Biological Activity of Novel 2,3-Dihydro-2-phenylsulfonylhydrazono-3-(2′,3′,4′,6′-tetra-O-acetyl-β-D-glucopyranosyl)thiazoles

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Chemical Research in Chinese Universities 2009年第1期25卷 52-55页

作者： WANG Hao-an LI Yu-xin LI Zheng-ming CHENG Hai-ying WANG su-hua LIU Bin Elemento-Organic Chemistry Institute State Key Laboratory of Elemento-Organic Chemistry National Pesticide Engineering Research Center Nankai University Tianjin 300071 P. R. China

A series of novel 2,3-dihydro-2-phenylsulfonylhydrazono-3-（2＇,3＇,4＇,6＇-tetra-O-acetyl-β-D-glucopyranosyl）thiazoles were designed and synthesized via the reaction of thiosemicarbazide with chloroaldehyde. Their chemical structures were characterized by ^1H and ^13C NMR spectroscopy and elemental analysis. The bioassay results indicate that some of these compounds exhibit moderate fungicidal and herbicidal activities.

关键词： Synthesis 2,3-Dihydrothiazole Biological activity

Pattern analysis of stem cell differentiation during in vitro Arabidopsis organogenesis

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Frontiers in Biology 2010年第5期5卷 464-470页

作者： ying hua su Zhi Juan CHENG Yu Xiao su Xian Sheng ZHANG College of Life Sciences Shandong Agricultural UniversityTai’an 271018China State Key Laboratory of Crop Biology Shandong Agricultural UniversityTai’an 271018China

Plant somatic cells have the capability to switch their cell fates from differentiated to undifferen-tiated status under proper culture conditions,which is designated as *** a result,plant cells can easily regenerate new tissues or organs from a wide variety of ***,the mechanism by which plant cells have such remarkable regeneration ability is still largely *** this study,we used a set of meristem-speciﬁc marker genes to analyze the patterns of stem cell differentiation in the processes of somatic embryogenesis as well as shoot or root organogenesis in *** studies furnish preliminary and important information on the patterns of the de novo stem cell differentiation during various types of in vitro organogenesis.

关键词： Organ regeneration stem cell differentiation WUS expression WOX5 expression