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Viroids:Small Probes for Exploring the Vast Universe of RNA Trafficking in plants

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Journal of Integrative plant biology 2010年第1期52卷 28-39页

作者： Ying Wang Biao Ding Department of plant cellular and molecular biology and plant Biotechnology Center The Ohio State University The Center for RNA biology The Ohio State University molecular Cellular and DeVelopmental Biology Program The Ohio State University Columbus OH 43210 USA

Cell-to-cell and long-distance trafficking of RNA is a rapidly evolving frontier of integrative plant biology that broadly impacts studies on plant growth and development, spread of infectious agents and plant defense responses. The fundamental questions being pursued at the forefronts revolve around function, mechanism and evolution. In the present review, we will first use specific examples to illustrate the biological importance of cell-to-cell and long-distance trafficking of RNA. We then focus our discussion on research findings obtained using viroids that have advanced our understanding of the underlying mechanisms involved in RNA trafficking. We further use viroid examples to illustrate the great diversity of trafficking machinery evolved by plants, as well as the promise for new insights in the years ahead. Finally, we discuss the prospect of integrating findings from different experimental systems to achieve a systems-based understanding of RNA trafficking function, mechanism and evolution.

关键词： VIROIDS plant defenses RNA plant evolution plant cells & tissues

CRISPR/Cas9: Development and Application in Rice Breeding

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Rice science 2019年第5期26卷 265-281页

作者： Fernando Matías ROMERO Andrés GATICA-ARIAS Laboratory of plant Biotechnology School of Biology/Research Center in Cellular and Molecular Biology University of Costa Rica

Rice(Oryza sativa L.)is an important staple food crop worldwide due to its adaptability to different environmental *** of its great economic and social importance,there is a constant requirement for new varieties with improved agronomic characteristics,such as tolerance to different biotic(such as bacterium,fungus,insect and virus)and abiotic stresses(such as salinity,drought and temperature),higher yield and better organoleptic and nutritional *** the new genome editing technologies,the clustered regularly interspaced short palindromic repeats(CRISPR)/CRISPR-associated protein(Cas)(CRISPR/Cas)system allows precise and specific edition in a targeted genome *** is one of the most frequently used techniques for the study of the function of new genes and for the development of mutant lines with enhanced tolerance to biotic and abiotic stresses,herbicide resistance or improved *** wide varieties of applications for this technology include simple non-homologous end joining,homologous recombination,gene replacement,and base *** this review,we analyzed how some of these applications have been used in rice cultivars to obtain rice varieties better adapted to current environmental conditions and market requirements.

关键词： rice CRISPR Cas genome editing biotic stress abiotic stress yield off-target mutation

PAT(Periderm Assessment Toolkit):A Quantitative and Large-Scale Screening Method for Periderm Measurements

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plant Phenomics 2024年第2期6卷 295-308页

作者： Gonzalo Villarino Signe Dahlberg-Wright Ling Zhang Marianne Schaedel Lin Wang Karyssa Miller Jack Bartlett Albert Martin Dang Vu Wolfgang Busch plant molecular and cellular biology Laboratory Salk Institute for Biological StudiesLa JollaCAUSA

The periderm is a vital protective tissue found in the roots,stems,and woody elements of diverse plant *** plays an important function in these plants by assuming the role of the epidermis as the outermost *** its critical role for protecting plants from environmental stresses and pathogens,research on root periderm development has been limited due to its late formation during root development,its presence only in mature root regions,and its impermeability.

关键词： quantitative screening toolkit method assessment large-scale measurements periderm

Sensory sacrifices when we mass-produce mass produce

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Horticulture Research 2016年第1期3卷 167-172页

作者： Kevin M Folta Harry J Klee Horticultural Sciences Department Plant Innovation Center and The Graduate Program for Plant Molecular and Cellular BiologyUniversity of FloridaGainesville32606FLUSA

plant breeders have been extremely successful at driving genetic improvements in ***,‘improvements’are truly a question of *** the last one-hundred years most plant genetic innovations have been driven by industry *** fruits,heavier yields,uniformity,increased resistance to disease and better shipping quality are just a few of the traits that have ensured profits on the farm and affordable food for ***,these milestones have come at the expense of sensory qualities,which have been sacrificed in exchange for practical production *** a base of industry-sufficient genetics,today’s breeders can now turn to the consumer for guidance in defining critical *** approaches to plant breeding start with the analysis of consumer preferences,and then merge them with modern genomics and analytical chemistry *** result is the next generation of crops that meet supply chain demands while presenting improvements in flavor,nutrition,color,aroma and *** review analyzes the approach of consumer-assisted selection as it has been applied to tomato and strawberry,two complementary annual crops that have been intensively bred to meet industry *** breeding efforts start with the consumer,with the objective of reclaiming lost sensory qualities.

关键词： crops breeding driving

Notes from the Underground:Receptor-Like Kinases in Arabidopsis Root Development

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Journal of Integrative plant biology 2013年第12期55卷 1224-1237页

作者： Michael P.Wierzba Frans E.Tax Department of molecular and cellular biology University of Arizona School of plant Sciences University of Arizona

During plant development, the frequency and context of cell division must be controlled, and cells must differentiate properly to perform their mature functions. In addition, stem cell niches need to be maintained as a reservoir for new cells. All of these processes require intercellular signaling, whether it is a cell relaying its position to other cells, or more mature cells signaling to the stem cell niche to regulate the rate of growth. Receptor-like kinases have emerged as a major component in these diverse roles, especially within the Arabidopsis root. In this review, the functions of receptor-like kinase signaling in regulating Arabidopsis root development will be examined in theareas of root apical meristem maintenance, regulation of epidermal cell fate, lateral root development and vascular differentiation.

关键词： Lateral root development receptor-like kinases root apical meristem root epidermal patterning vascular development.

Control of Directional Macromolecular Trafficking Across Specific cellular Boundaries:A Key to Integrative plant biology

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Journal of Integrative plant biology 2007年第8期49卷 1227-1234页

作者： BiaoDing AsukaItaya Department of plant cellular and molecular biology and plant Biotechnology Center Ohio State University ColumbusOhio 43210USA The OSU RNA GroupOhio State UniversityColumbusOhio 43210USA MolecularCellular and Developmental Biology ProgramOhio State UniversityColumbusOhio 43210USA

There is now solid evidence that cell-to-cell trafficking of certain proteins and RNAs plays a critical role in trans-cellular regulation of gene expression to coordinate cellular differentiation and development. Such trafficking also is critical for viral infection and plant defense. The mechanisms of trafficking remain poorly understood. Although some proteins may move between cells by diffusion, many proteins and RNAs move in a highly regulated fashion. Regulation is likely achieved through interactions between distinct protein or RNA motifs and cellular factors. Some motifs and factors have been identified. One of the major focuses for future studies is to identify all motifs and their cognate factors and further elucidate their roles in trafficking between specific cells. With increasing information from such studies, we should be able to develop an understanding of the mechanisms that regulate trafficking of various proteins and RNAs across all and specific cellular boundaries. On the basis of such mechanistic knowledge, we can further investigate how the trafficking machinery has evolved to regulate developmental and physiological processes in a plant, how pathogens have co-evolved to use this machinery for systemic spread in a plant, and how plants use this machinery for counterdefense.

关键词： CAPRICE GLABRA3 KNOTTED-I phloem plasmodesmata protein trafficking RNA trafficking SHORT-ROOT viral movementprotein viroid

Sequential light programs shape kale (Brassica napus) sproutappearance and alter metabolic and nutrient content

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Horticulture Research 2014年第1期1卷 244-256页

作者： Sofia D Carvalho Kevin M Folta Horticultural Sciences Department University of FloridaGainesvilleFLUSA plant molecular and cellular biology program University of FloridaGainesvilleFLUSA plant Innovation program University of FloridaGainesvilleFLUSA

Different light wavelengths have specific effects on plant growth and ***-bandwidth light-emitting diode(LED)lighting may be used to directionally manipulate size,color and metabolites in high-value fruits and *** this report,Red Russian kale(Brassica napus)seedlings were grown under specific light conditions and analyzed for photomorphogenic responses,pigment accumulation and nutraceutical *** results showed that this genotype responds predictably to darkness,blue and red light,with suppression of hypocotyl elongation,development of pigments and changes in specific ***,these seedlings were relatively hypersensitive to far-red light,leading to uncharacteristically short hypocotyls and high pigment accumulation,even after growth under very low fluence rates(,1 mmol m^(-2) s^(-1)).General antioxidant levels and aliphatic glucosinolates are elevated by far-red light *** treatments of darkness,blue light,red light and far-red light were applied throughout sprout development to alter final product *** results indicate that sequential treatment with narrow-bandwidth light may be used to affect key economically important traits in high-value crops.

关键词： treatment content narrow

Expanding roles for pectins in plant development

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Journal of Integrative plant biology 2018年第10期60卷 910-923页

作者： Adam M.Saffer Department of molecular Cellular and Developmental BiologyYale University

Pectins are complex cell wall polysaccharides important for many aspects of plant development. Recent studies have discovered extensive physical interactions between pectins and other cell wall components,implicating pectins in new molecular functions. Pectins are often localized in spatially-restricted patterns, and some of these non-uniform pectin distributions contribute to multiple aspects of plant development, including the morphogenesis of cells and organs. Furthermore, a growing number of mutants affecting cell wall composi- tion have begun to reveal the distinct contributions of different pectins to plant development. This review discusses the interactions of pectins with other cell wall components, the functions of pectins in controlling cellular morphology, and how non-uniform pectin composition can be an important determinant of developmental processes.

关键词： Expanding roles for pectins in plant development

Diverse Roles of ERECTA Family Genes in plant Development

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Journal of Integrative plant biology 2013年第12期55卷 1238-1250页

作者： Elena D.Shpak Department of Biochemistry Cellular and Molecular BiologyUniversity of Tennessee

Multiple receptor-like kinases （RLKs） enable intercellular communication that coordinates growth and development of plant tissues. ERECTA family receptors （ERfs） are an ancient family of leucine-rich repeat RLKs that in Arabidopsis consists of three genes： ERECTA, ERL1, and ERL2. ERfs sense secreted cysteine-rich peptides from the EPF/EPFL family and transmit the signal through a MAP kinase cascade. This review discusses the functions of ERfs in stomata development, in regulation of longitudinal growth of aboveground organs, during reproductive development, and in the shoot apical meristem. In addition the role of ERECTA in plant responses to biotic and abiotic factors is examined.

关键词： Arabidopsis ERECTA leaf primordium initiation receptor-like kinase stomata vasculature.