Works (32)

Updated: August 16th, 2023 21:16

2009 journal article

Salicylic acid stimulates secretion of the normally symplastic enzyme mannitol dehydrogenase: a possible defense against mannitol-secreting fungal pathogens

PLANTA, 230(6), 1093–1103.

By: F. Cheng n, E. Zamski*, W. Guo n, D. Pharr n & J. Williamson n

author keywords: Protein secretion; Mannitol metabolism; Plant-pathogen interaction; Extracellular space; Apoplast
MeSH headings : Antifungal Agents / pharmacology; Brefeldin A / pharmacology; Cell Wall / drug effects; Cell Wall / metabolism; Cells, Cultured; Cytoplasm / metabolism; Fungi / growth & development; Fungi / metabolism; Golgi Apparatus / drug effects; Golgi Apparatus / metabolism; Golgi Apparatus / ultrastructure; Immunity, Innate / genetics; Immunoblotting; Mannitol / metabolism; Mannitol Dehydrogenases / genetics; Mannitol Dehydrogenases / metabolism; Microscopy, Immunoelectron; Plant Diseases / genetics; Plant Diseases / microbiology; Plant Leaves / genetics; Plant Leaves / metabolism; Plant Leaves / ultrastructure; Plant Proteins / genetics; Plant Proteins / metabolism; Plants, Genetically Modified; Protein Transport / drug effects; Salicylic Acid / pharmacology; Tobacco / cytology; Tobacco / genetics; Tobacco / metabolism
TL;DR: Immunoelectron microscopy, immunoblot, and biochemical data reported here show that the normally symplastic plant enzyme, mannitol dehydrogenase (MTD), is secreted into the apoplast after treatment with the endogenous inducer of plant defense responses salicylic acid (SA). (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2007 journal article

Carbohydrate content and root growth in seeds germinated under salt stress

Journal of the American Society for Horticultural Science, 132(6), 876–882.

Source: NC State University Libraries
Added: August 6, 2018

2006 journal article

Pollen grains of heat tolerant tomato cultivars retain higher carbohydrate concentration under heat stress conditions

SCIENTIA HORTICULTURAE, 109(3), 212–217.

By: N. Firon*, R. Shaked*, M. Peet n, D. Pharr n, E. Zamski, K. Rosenfeld*, L. Althan*, E. Pressman*

author keywords: Lycopersicon esculentum; cultivars; heat stress; heat tolerance; pollen quality; starch; sugars; tomato
TL;DR: The results indicate that the carbohydrate content of developing and mature tomato pollen grains may be an important factor in determining pollen quality, and suggest that heat-tolerant cultivars have a mechanism for maintaining the appropriate carbohydrate content under heat stress. (via Semantic Scholar)
UN Sustainable Development Goal Categories
13. Climate Action (Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2004 journal article

Heat and drought influence photosynthesis, water relations, and soluble carbohydrates of two ecotypes of redbud (Cercis canadensis)

Journal of the American Society for Horticultural Science, 129(4), 497–502.

By: J. Griffin, T. Ranney & D. Pharr

Source: NC State University Libraries
Added: August 6, 2018

2004 journal article

Photosynthesis, chlorophyll fluorescence, and carbohydrate content of Illicium taxa grown under varied irradiance

Journal of the American Society for Horticultural Science, 129(1), 46–53.

By: J. Griffin, T. Ranney & D. Pharr

Source: NC State University Libraries
Added: August 6, 2018

2003 journal article

A Nicotiana tabacum cell culture selected for accelerated growth on mannose has increased expression of phosphomannose isomerase

PLANT SCIENCE, 165(3), 639–648.

By: A. Barb n, D. Pharr n & J. Williamson n

author keywords: phosphomannose isomerase (PMI); tobacco; Nicotiana tabacum; mannose; metabolism
TL;DR: The selection of a mutant NT1 cell line is reported, that grows four times faster on Man than the parental culture from which it was derived, which likely contributes to the increased growth rate on Man. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2002 journal article

Constitutive expression of a celery mannitol dehydrogenase in tobacco enhances resistance to the mannitol-secreting fungal pathogen Alternaria alternata

PLANT JOURNAL, 32(1), 41–49.

By: D. Jennings*, M. Daub n, D. Pharr* & J. Williamson*

author keywords: antioxidant; disease resistance; hydroxyl radical; mannitol; reactive oxygen
MeSH headings : Alternaria / growth & development; Alternaria / metabolism; Apium / enzymology; Apium / genetics; Ascomycota / growth & development; Ascomycota / metabolism; DNA, Complementary / chemistry; DNA, Complementary / genetics; Gene Expression Regulation, Enzymologic; Gene Expression Regulation, Plant; Genes, Plant / genetics; Immunity, Innate / genetics; Mannitol / metabolism; Mannitol Dehydrogenases / genetics; Mannitol Dehydrogenases / metabolism; Plant Diseases / genetics; Plant Diseases / microbiology; Plants, Genetically Modified; Reactive Oxygen Species; Tobacco / enzymology; Tobacco / genetics
TL;DR: Constitutive expression of the MTD transgene was found to confer significantly enhanced resistance to A. alternata, but not to the non-mannitol-secreting fungal pathogen Cercospora nicotianae, consistent with the hypothesis that MTD plays a role in resistance to mannitol-Secretingfungal plant pathogens. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
3. Good Health and Well-being (OpenAlex)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2002 journal article

Sugar alcohols, salt stress, and fungal resistance: Polyols - Multifunctional plant protection?

Journal of the American Society for Horticultural Science, 127(4), 467–473.

Source: NC State University Libraries
Added: August 6, 2018

2002 journal article

The effect of heat stress on tomato pollen characteristics is associated with changes in carbohydrate concentration in the developing anthers

ANNALS OF BOTANY, 90(5), 631–636.

By: E. Pressman*, M. Peet & D. Pharr

author keywords: anther development; carbohydrate; heat stress; pollen; starch; temperature stress
MeSH headings : Carbohydrate Metabolism; Flowers / growth & development; Flowers / metabolism; Hot Temperature; Solanum lycopersicum / growth & development; Solanum lycopersicum / metabolism; Pollen / metabolism; Survival Rate
TL;DR: It is suggested that a major effect of heat stress on pollen development is a decrease in starch concentration 3 d before anthesis, which results in a decreased sugar concentration in the mature pollen grains, which possibly contribute to the decreased pollen viability in tomato. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2001 journal article

Analysis of celery (Apium graveolens) mannitol dehydrogenase (Mtd) promoter regulation in Arabidopsis suggests roles for MTD in key environmental and metabolic responses

PLANT MOLECULAR BIOLOGY, 47(5), 621–631.

By: E. Zamski n, W. Guo*, Y. Yamamoto n, D. Pharr* & J. Williamson*

author keywords: carbohydrate translocation and regulation; gene regulation; mannitol metabolism; plant-pathogen interaction; salt and osmotic stress
MeSH headings : 3-O-Methylglucose / pharmacology; Abscisic Acid / pharmacology; Acetates / pharmacology; Apium / enzymology; Apium / genetics; Arabidopsis / cytology; Arabidopsis / genetics; Arabidopsis / metabolism; Cell Division / drug effects; Cyclopentanes / pharmacology; Deoxyglucose / pharmacology; Dose-Response Relationship, Drug; Gene Expression Regulation / drug effects; Glucose / pharmacology; Green Fluorescent Proteins; Luminescent Proteins / genetics; Luminescent Proteins / metabolism; Mannitol / pharmacology; Mannitol Dehydrogenases / genetics; Oxylipins; Plants / drug effects; Plants / enzymology; Plants / genetics; Plants, Genetically Modified / cytology; Plants, Genetically Modified / genetics; Plants, Genetically Modified / metabolism; Promoter Regions, Genetic / genetics; Recombinant Fusion Proteins / genetics; Recombinant Fusion Proteins / metabolism; Salicylic Acid / pharmacology; Sodium Chloride / pharmacology
TL;DR: The massive up-regulation of Mtd expression in the vascular tissues of salt-stressed Arabidopsis roots suggests a possible role for MTD in mannitol translocation and unloading and its interrelation with sugar metabolism. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2000 chapter

Carbohydrates

In Plant sciences: Vol. 1 (pp. 120–122). New York: Macmillan Reference USA.

By: D. Pharr & J. Williamson

Source: NC State University Libraries
Added: August 6, 2018

2000 journal article

Formation of a hexokinase complex is associated with changes in energy utilization in celery organs and cells

PHYSIOLOGIA PLANTARUM, 110(1), 28–37.

By: Y. Yamamoto n, R. Prata n, J. Williamson n, M. Weddington n & D. Pharr n

TL;DR: It is found that mitochondria prepared from Glc-grown celery suspension-cultured cells contained substantial HK activity, and that oxygen uptake of these mitochondria was stimulated by Glc, consistent with the hypothesis that mitochondrial localization of celery HK may play a role in rapid recycling of adenylate. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1999 journal article

Galactosyl-sucrose metabolism and UDP-galactose pyrophosphorylase from Cucumis melo L-fruit

Physiologia Plantarum, 106(1), 9–16.

By: M. Feusi*, J. Burton n, J. Williamson n & D. Pharr n

TL;DR: It is demonstrated that the enzyme UDP-glucose-hexose-1-P uridylyltransferase is not the central enzyme in galactose metabolism in muskmelon fruit, and a broad substrate specificity UDP-galactose pyrophosphorylase (PPase) serves the same functional role. (via Semantic Scholar)
Source: NC State University Libraries
Added: August 6, 2018

1999 journal article

Regulation of mannitol dehydrogenase: Relationship to plant growth and stress tolerance

HortScience, 34(6), 1027–1032.

By: D. Pharr, R. Prata, D. Jennings, J. Williamson, E. Zamski, Y. Yamamoto, M. Conkling

Source: NC State University Libraries
Added: August 6, 2018

1998 journal article

Characterization of NAD-dependent mannitol dehydrogenase from celery as affected by ions, chelators, reducing agents and metabolites

PLANT SCIENCE, 131(1), 43–51.

By: J. Stoop n, J. Williamson n, M. Conkling n, J. MacKay n & D. Pharr n

author keywords: adenylate inhibition; mannitol dehydrogenase; mannitol metabolism; plant carbohydrates; redox regulation; zinc binding
TL;DR: Inhibition by the chelator 1,10-phenanthroline suggests that zinc is required for MTD activity, and the observed down-regulation of MTD in salt stressed celery is not due to a direct inhibition by NaCl or macronutrients. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1998 journal article

Cloning and characterization of a genomic clone (Accession No. AF067082) encoding mannitol dehydrogenase, a salt, sugar and SA regulated gene from celery (Apium graveolens L.)(#PGR98-137)

Plant Physiology, 118(1), 329.

By: J. Williamson, W. Guo & D. Pharr

Source: NC State University Libraries
Added: August 6, 2018

1998 journal article

Roles for mannitol and mannitol dehydrogenase in active oxygen-mediated plant defense

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 95(25), 15129–15133.

By: D. Jennings n, M. Ehrenshaft n, D. Pharr n & J. Williamson n

TL;DR: It is shown that the catabolic enzyme mannitol dehydrogenase is induced in a non-mannitol-producing plant in response to both fungal infection and specific inducers of plant defense responses, providing a mechanism whereby the plant can counteract fungal suppression of ROS-mediated defenses by catabolizingMannitol of fungal origin. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

1997 journal article

Subcellular localization of celery mannitol dehydrogenase - A cytosolic metabolic enzyme in nuclei

PLANT PHYSIOLOGY, 115(4), 1397–1403.

By: Y. Yamamoto n, E. Zamski n, J. Williamson n, M. Conkling n & D. Pharr n

MeSH headings : Cell Nucleus / enzymology; Cell Nucleus / ultrastructure; Cells, Cultured; Cytosol / enzymology; Cytosol / ultrastructure; Gene Expression Regulation, Plant; Mannitol Dehydrogenases / analysis; Mannitol Dehydrogenases / biosynthesis; Meristem; Microscopy, Immunoelectron; Plant Leaves; Plant Roots; Vegetables / enzymology; Vegetables / ultrastructure
TL;DR: Immunogold localization and biochemical analyses presented here demonstrate that celery MTD is localized in the cytosol and nuclei, and densities of nuclear and cytosolic MTD in a given cell are approximately equal. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

1997 journal article

Sugar repression of mannitol dehydrogenase activity in celery cells

PLANT PHYSIOLOGY, 114(1), 307–314.

By: R. Prata n, J. Williamson n, M. Conkling n & D. Pharr n

TL;DR: Evidence that the activity of the mannitol-catabolizing enzymeMannitol dehydrogenase (MTD) is repressed by sugars in cultured celery (Apium graveolens L.) cells is presented and HK and sugar phosphorylation are involved in signaling MTD repression. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

1996 journal article

Immunolocalization of mannitol dehydrogenase in celery plants and cells

PLANT PHYSIOLOGY, 112(3), 931–938.

By: E. Zamski n, Y. Yamamoto n, J. Williamson n, M. Conkling n & D. Pharr n

MeSH headings : Animals; Antibody Specificity; Cells, Cultured; Cross Reactions; Cytoplasm / enzymology; Cytoplasm / ultrastructure; Immunoblotting; Immunohistochemistry; Mannitol Dehydrogenases / analysis; Plant Leaves; Plant Roots; Rabbits; Vegetables / cytology; Vegetables / enzymology
TL;DR: The distribution pattern of MTD within celery plants and in cell cultures that were grown on different carbon sources is consistent w ith the hypothesis that the Mtd gene may be regulated by sugar repression. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

1996 review

Mannitol metabolism in plants: A method for coping with stress

[Review of ]. TRENDS IN PLANT SCIENCE, 1(5), 139–144.

By: J. Stoop, J. Williamson n & D. Pharr n

TL;DR: Mannitol metabolism may play roles in plant responses to both biotic and abiotic stresses, and increased tolerance to salt- and osmotic-stress as a result of mannitol's function as a ‘compatible solute'. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: August 6, 2018

1995 chapter

Mannitol catabolism in plant sink tissues

In M. A. Madore & W. J. Lucas (Eds.), Carbon Partitioning and Source-Sink Interactions in Plants, Current Topics in Plant Physiology, Vol. 13 (Madore, MA and Lucas, WJ, eds.) (pp. 180–194). American Society of Plant Physiologists, Rockville, MD.

By: D. Pharr, J. Stoop, M. Studer Feusi, J. Williamson, M. Massel & M. Conkling

Ed(s): M. Madore & W. Lucas

Source: NC State University Libraries
Added: August 6, 2018

1995 journal article

PURIFICATION OF NAD-DEPENDENT MANNITOL DEHYDROGENASE FROM CELERY SUSPENSION-CULTURES

PLANT PHYSIOLOGY, 108(3), 1219–1225.

By: J. Stoop n, J. Willamson n, M. Conkling n & D. Pharr n

MeSH headings : Amino Acid Sequence; Cells, Cultured; Chromatography, Ion Exchange; Molecular Sequence Data; NAD / metabolism; Sugar Alcohol Dehydrogenases / genetics; Sugar Alcohol Dehydrogenases / isolation & purification; Vegetables / cytology; Vegetables / enzymology
TL;DR: A highly efficient and simple purification protocol was developed involving polyethylene glycol fractionation, diethylaminoethyl-anion-exchange chromatography, and NAD-agarose affinity chromatography using NAD gradient elution to purify mannitol dehydrogenase. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

1995 journal article

SEQUENCE-ANALYSIS OF A MANNITOL DEHYDROGENASE CDNA FROM PLANTS REVEALS A FUNCTION FOR THE PATHOGENESIS-RELATED PROTEIN ELI3

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 92(16), 7148–7152.

By: J. Williamson n, J. Stoop n, M. Massel n, M. Conkling n & D. Pharr n

author keywords: SALT STRESS; CARBOHYDRATE METABOLISM; POLYOLS; CELERY; SALICYLATE
MeSH headings : Amino Acid Sequence; Base Sequence; DNA, Complementary / genetics; DNA, Plant / genetics; Mannitol Dehydrogenases / genetics; Molecular Sequence Data; Plant Proteins / genetics; Plant Proteins / metabolism; RNA, Plant / genetics; RNA, Plant / metabolism; Salicylates / pharmacology; Salicylic Acid; Sequence Homology, Amino Acid; Vegetables / genetics; Vegetables / metabolism
TL;DR: Responses of the primary enzyme controlling mannitol pool size reflect the importance ofMannitol metabolism in plant responses to divergent types of environmental stress. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

1995 journal article

The dual role of mannitol as osmoprotectant and photoassimilate in celery

HortScience, 30(6), 1182–1188.

By: D. Pharr, J. Stoop, J. Williamson, M. Feusi, M. Massel & M. Conkling

Source: NC State University Libraries
Added: August 6, 2018

1993 patent

Mannitol oxidoreductase isolated from vascular plants

Washington, DC: U.S. Patent and Trademark Office.

By: D. Pharr & J. Stoop

Source: NC State University Libraries
Added: August 6, 2018

1989 journal article

Anaerobiosis and carbohydrate status of the embryonic axis of germinating cucumber seeds

HortScience, 24(1), 120.

By: D. Pharr & Y. Motomura

Source: NC State University Libraries
Added: August 6, 2018

1987 journal article

ISOLATION OF GALACTINOL FROM LEAVES OF CUCUMIS-SATIVUS

PLANT SCIENCE, 50(1), 21–26.

By: D. Pharr n, D. Hendrix*, N. Robbins n, K. Gross* & H. Sox n

TL;DR: The cucumber leaf galactinol was found to be suitable as a substrate for a galactosyl transferase enzyme which catalyses the formation of stachyose. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: August 6, 2018

1985 journal article

LEAF CARBOHYDRATE STATUS AND ENZYMES OF TRANSLOCATE SYNTHESIS IN FRUITING AND VEGETATIVE PLANTS OF CUCUMIS-SATIVUS L

PLANT PHYSIOLOGY, 77(1), 104–108.

By: D. Pharr n, S. Huber n & H. Sox n

TL;DR: The lower galactinol pools may be associated with an activation of the terminal step in stachyose biosynthesis in leaves in response to the high sink demand of a growing cucumber fruit. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

1984 journal article

CHANGES IN CARBOHYDRATE AND ENZYME LEVELS DURING THE SINK TO SOURCE TRANSITION OF LEAVES OF CUCUMIS-SATIVUS L, A STACHYOSE TRANSLOCATOR

PLANT SCIENCE LETTERS, 35(3), 187–193.

By: D. Pharr n & H. Sox n

TL;DR: The results point to the importance of changes in enzyme levels per se as determinants ofChanges in soluble carbohydrate levels associated with acquisition of export capability during leaf expansion. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

1982 patent

Altered brining properties of produce by a method of pre-brining exposure of the fresh produce to oxygen or carbon dioxide

Washington, DC: U.S. Patent and Trademark Office.

By: H. Fleming, D. Pharr & R. Thompson

Source: NC State University Libraries
Added: August 6, 2018

1977 journal article

Identification and distribution of soluble saccharides in pickling cucumber plants and their fate in fermentation

Journal of the American Society for Horticultural Science, 102(4), 406.

By: D. Pharr, H. Sox, E. Smart, R. Lower & H. Fleming

Source: NC State University Libraries
Added: August 6, 2018

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