John J. MacKay

Works (14)

Updated: February 10th, 2025 14:29

2004 journal article

Gene Expression during Formation of Earlywood and Latewood in Loblolly Pine: Expression Profiles of 350 Genes

Plant Biology, 6(6), 654–663.

By: U. Egertsdotter *, L. Zyl n, J. MacKay*, G. Peter*, M. Kirst n, C. Clark n, R. Whetten n , R. Sederoff n

author keywords: microarray analysis; Pinus taeda; earlywood; latewood; transcript abundance
MeSH headings : Expressed Sequence Tags; Gene Expression Profiling; Gene Expression Regulation, Plant; Genes, Plant; Microarray Analysis; Pinus taeda / genetics; Pinus taeda / metabolism; Reverse Transcriptase Polymerase Chain Reaction; Seasons; Transcription, Genetic
topics (OpenAlex): Forest ecology and management; Forest Ecology and Biodiversity Studies
Sources: Web Of Science, Crossref, NC State University Libraries
Added: August 6, 2018

2004 conference paper

Tracking down the effects of a rare mutant gene in loblolly pine: a first report

2004 Paper Summit, Spring Technical and International Environmental Conference. CD-ROM published by TAPPI, Norcross, GA.

By: Q. Yu, E. Capanema, V. Batista, S. Josserand, G. Johnson, C. Nelson, S. McKeand , J. MacKay ...

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

2001 article

Elucidation of new structures in lignins of CAD- and COMT-deficient plants by NMR

Ralph, J., Lapierre, C., Marita, J. M., Kim, H., Lu, F., Hatfield, R. D., … Boerjan, W. (2001, July 1). Phytochemistry.

By: J. Ralph *, C. Lapierre *, J. Marita*, H. Kim *, F. Lu *, R. Hatfield *, S. Ralph*, C. Chapple * ...

author keywords: NMR; transgenic; mutant; O-methyltransferase; monolignol; coniferyl aldehyde; sinapyl aldehyde; 5-hydroxyconiferyl alcohol
MeSH headings : Alcohol Oxidoreductases / deficiency; Alcohol Oxidoreductases / metabolism; Cycadopsida / enzymology; Cycadopsida / metabolism; Lignin / biosynthesis; Lignin / chemistry; Methyltransferases / deficiency; Methyltransferases / metabolism; Models, Chemical; Molecular Structure; Nuclear Magnetic Resonance, Biomolecular / methods; Plants, Toxic; Tobacco / enzymology; Tobacco / metabolism
topics (OpenAlex): Plant Gene Expression Analysis; Lignin and Wood Chemistry; Biochemical and biochemical processes
TL;DR: The recognition that novel units can incorporate into lignins portends significantly expanded opportunities for engineering the composition and consequent properties of lignin for improved utilization of valuable plant resources. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2001 article

PULPING AND BLEACHING OF CAD-DEFICIENT WOOD

Dimmel, D. R., MacKay, J. J., Althen, E. M., Parks, C., & Sederoff, R. R. (2001, February 28). Journal of Wood Chemistry and Technology.

By: D. Dimmel, J. MacKay*, E. Althen, C. Parks & R. Sederoff n

topics (OpenAlex): Lignin and Wood Chemistry; Plant Gene Expression Analysis; Biofuel production and bioconversion
Source: Web Of Science
Added: August 6, 2018

2000 article

Lignin Structure in a Mutant Pine Deficient in Cinnamyl Alcohol Dehydrogenase

Lapierre, C., Pollet, B., MacKay, J. J., & Sederoff, R. R. (2000, May 20). Journal of Agricultural and Food Chemistry.

By: C. Lapierre  n, B. Pollet n, J. MacKay n & R. Sederoff n

author keywords: lignification; altered lignin structure; pine (Pinus taeda L.); thioacidolysis; dihydroconiferyl alcohol
MeSH headings : Alcohol Oxidoreductases / genetics; Cycadopsida / enzymology; Cycadopsida / genetics; Lignin / biosynthesis; Lignin / chemistry; Mutation; Trees / enzymology; Trees / genetics
topics (OpenAlex): Lignin and Wood Chemistry; Plant Gene Expression Analysis; Fermentation and Sensory Analysis
TL;DR: The results suggest that the CAD-deficient pines efficiently compensate for the shortage in normal lignin precursors by utilizing nontraditional wall phenolics to construct unusual lignins particularly enriched in resistant interunit bonds. (via Semantic Scholar)
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UN Sustainable Development Goal Categories
15. Life on Land (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1999 article

Average effect of a mutation in lignin biosynthesis in loblolly pine

Wu, R. L., Remington, D. L., MacKay, J. J., McKeand, S. E., & O’Malley, D. M. (1999, August 1). Theoretical and Applied Genetics, Vol. 99, pp. 705–710.

By: R. Wu  n, D. Remington n, J. MacKay*, S. McKeand n  & D. O’Malley n

author keywords: average effect; CAD; lignin biosynthesis; loblolly pine; mutant; RAPDs
topics (OpenAlex): Plant Gene Expression Analysis; Lignin and Wood Chemistry; Horticultural and Viticultural Research
TL;DR: It is found that the substitution of a wild-type allele by cad-n1 was associated with a significant effect on 2nd-year shoot elongation in a half-sib family of loblolly pine (designated family 7–1037), and the average effect appeared to increase with tree growth and was greater for stem radial growth than height growth. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
2. Zero Hunger (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

1999 article

Modified Lignin and Delignification with a CAD-Deficient Loblolly Pine

MacKay, J., Presnell, T., Jameel, H., Taneda, H., O'Malley, D., & Sederoff, R. (1999, July 1). Holzforschung.

By: J. MacKay*, T. Presnell, H. Jameel*, H. Taneda, D. O'Malley* & R. Sederoff*

author keywords: pine; genetic modification; lignin mutant; delignification; soda pulping; coniferaldehyde
topics (OpenAlex): Plant Gene Expression Analysis; Lignin and Wood Chemistry; Enzyme-mediated dye degradation
TL;DR: More extensive lignin removal, both in mild alkali treatment and in soda pulping, indicate that suppression of CAD in softwood trees may hold promise to produce woods well suited for “milder” pulping conditions that consume less chemicals and generate less waste. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

1999 article

Unexpected variation in lignin

Sederoff, R. R., MacKay, J. J., Ralph, J., & Hatfield, R. D. (1999, April 1). Current Opinion in Plant Biology.

By: R. Sederoff n, J. MacKay*, J. Ralph * & R. Hatfield *

MeSH headings : Alcohol Oxidoreductases / genetics; Alcohol Oxidoreductases / metabolism; Lignin / biosynthesis; Lignin / chemistry; Mutation; Phenols / metabolism; Plants, Genetically Modified; Trees / genetics; Trees / metabolism
topics (OpenAlex): Plant Gene Expression Analysis; Lignin and Wood Chemistry; Biochemical and biochemical processes
TL;DR: The results argue in favor of an increased potential for genetic modification of lignin and indicate that the knowledge of the biosynthesis of lIGNin is far from complete. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

1998 article

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

Stoop, J. M. H., Williamson, J. D., Conkling, M. A., MacKay, J. J., & Pharr, D. M. (1998, January 1). Plant Science.

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
topics (OpenAlex): Plant nutrient uptake and metabolism; Plant tissue culture and regeneration; Plant Stress Responses and Tolerance
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)
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UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1998 patent

Method of altering lignin in trees

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

By: J. MacKay, D. O'Malley, R. Whetten  & R. Sederoff

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

1998 article

RECENT ADVANCES IN UNDERSTANDING LIGNIN BIOSYNTHESIS

Whetten, R. W., MacKay, J. J., & Sederoff, R. R. (1998, June 1). Annual Review of Plant Physiology and Plant Molecular Biology, Vol. 49, pp. 585–609.

By: R. Whetten n , J. MacKay n & R. Sederoff n

author keywords: monolignol biosynthesis; lignin composition; pulp manufacturing; forage quality; metabolic plasticity
topics (OpenAlex): Plant Gene Expression Analysis; Lignin and Wood Chemistry; Fermentation and Sensory Analysis
TL;DR: These results argue that the accepted lignin biosynthetic pathway is either incomplete or incorrect, or both; and also suggest that plants may have a high level of metabolic plasticity in the formation of lignins. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

1997 article

Abnormal Lignin in a Loblolly Pine Mutant

Ralph, J., MacKay, J. J., Hatfield, R. D., O'Malley, D. M., Whetten, R. W., & Sederoff, R. R. (1997, July 11). Science, Vol. 277, pp. 235–239.

By: J. Ralph  n, J. MacKay n, R. Hatfield n, D. O'Malley n, R. Whetten n  & R. Sederoff n

MeSH headings : Alcohol Oxidoreductases / deficiency; Alcohol Oxidoreductases / genetics; Alcohol Oxidoreductases / metabolism; Aldehydes / analysis; Lignin / biosynthesis; Lignin / chemistry; Magnetic Resonance Spectroscopy; Mutation; Oxidation-Reduction; Phenols / analysis; Phenols / metabolism; Pinus taeda; Plant Proteins / genetics; Plant Proteins / metabolism
topics (OpenAlex): Lignin and Wood Chemistry; Plant Gene Expression Analysis; Horticultural and Viticultural Research
TL;DR: Novel lignin is formed in a mutant loblolly pine severely depleted in cinnamyl alcohol dehydrogenase, which converts coniferaldehyde to coniferyl alcohol, the primary lignIn precursor in pines. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
15. Life on Land (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

1997 article

Inheritance, gene expression, and lignin characterization in a mutant pine deficient in cinnamyl alcohol dehydrogenase

MacKay, J. J., O’Malley, D. M., Presnell, T., Booker, F. L., Campbell, M. M., Whetten, R. W., & Sederoff, R. R. (1997, July 22). Proceedings of the National Academy of Sciences, Vol. 94, pp. 8255–8260.

By: J. MacKay n, D. O’Malley n, T. Presnell n, F. Booker n, M. Campbell  n, R. Whetten n , R. Sederoff n

MeSH headings : Alcohol Oxidoreductases / genetics; Alcohol Oxidoreductases / metabolism; Chromosome Mapping; Gene Expression Regulation, Enzymologic / genetics; Gene Expression Regulation, Plant / genetics; Homozygote; Lignin / metabolism; Mutation; Phenotype; Substrate Specificity; Trees / enzymology; Trees / genetics; Trees / metabolism
topics (OpenAlex): Plant Gene Expression Analysis; Horticultural and Viticultural Research; Genetic Mapping and Diversity in Plants and Animals
TL;DR: Lignin composition in this mutant loblolly pine shows dramatic modifications, including increased incorporation of the substrate of CAD (coniferaldehyde), indicating that CAD may modulate lign in composition in pine. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
15. Life on Land (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

1995 journal article

Genetic analysis of cinnamyl alcohol dehydrogenase in loblolly pine: Single gene inheritance, molecular characterization and evolution

Molecular and General Genetics, 247(5), 537.

By: J. MacKay, W. Liu, R. Whetten, R. Sederoff & D. O'Malley

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

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