Skip to main content
ARS Home » Northeast Area » Beltsville, Maryland (BARC) » Beltsville Agricultural Research Center » Mycology and Nematology Genetic Diversity and Biology Laboratory » People & Locations » Margaret Macdonald (Peggy)
Margaret H Macdonald (Peggy)
Mycology and Nematology Genetic Diversity and Biology Laboratory
Biological Science Lab Technician

Phone: (301) 504-5832
Fax: (304) 504-5062
Room 114

10300 BALTIMORE AVE
BLDG 010A
BELTSVILLE, MD 20705

(Employee information on this page comes from the REE Directory. Please contact your front office staff to update the REE Directory.)


Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Festulolium and fungal endophyte associations: host status for Meloidogyne incognita and nematotoxic plant extracts Reprint Icon - (Peer Reviewed Journal)
Meyer, S.L., Patchett, B.J., Gillanders, T., Kantor, M., Timper, P., MacDonald, M.H. 2020. Festulolium and fungal endophyte associations: host status for Meloidogyne incognita and nematotoxic plant extracts. Journal of Nematology. 52:1-16. https://doi.org/10.21307/jofnem-2020-076.
Chia: Host status for Meloidogyne incognita and activity of plant extracts Reprint Icon - (Peer Reviewed Journal)
Meyer, S.L.F., MacDonald, M.H., Reetz, N.D., Kantor, M.R., Carta, L.K., Handoo, Z.A., Camp, M.J., Phillips, T.D. 2020. Chia: Host status for Meloidogyne incognita and activity of plant extracts. Plant Disease. 104:2979–2985. https://doi.org/10.1094/PDIS-10-19-2171-RE.
Vegetable plant vigor and suppression of Meloidogyne incognita with vetiver shoot amendments in soil - (Peer Reviewed Journal)
Jindapunnapat, K., Meyer, S.L., Macdonald, M.H., Reetz, N.D., Chitwood, D.J., Masler, E.P., Soonthornchareonnon, N., Camp, M.J., Sasnarukkit, A., Chinnasri, B. 2019. Vegetable plant vigor and suppression of Meloidogyne incognita with vetiver shoot amendments in soil. Nematropica. 49:208-219.
Nematotoxicity of Paeonia spp. extracts and Camellia oleifera tea seed cake and extracts to Heterodera glycines and Meloidogyne incognita Reprint Icon - (Peer Reviewed Journal)
Wen, Y., Meyer, S.L., MacDonald, M.H., Zheng, L., Jing, C., Chitwood, D.J. 2019. Nematotoxicity of Paeonia spp. extracts and Camellia oleifera tea seed cake and extracts to Heterodera glycines and Meloidogyne incognita. Plant Disease. 103:2191-2198. https://doi.org/10.1094/PDIS-09-18-1663-RE.
Activity of vetiver extracts and essential oil against Meloidogyne incognita - (Peer Reviewed Journal)
Jindapunnapat, K., Reetz, N.D., Macdonald, M.H., Bhagavathy, G., Chinnasri, B., Soonthornchareonnon, N., Sasnarukkit, A., Chauhan, K.R., Chitwood, D.J., Meyer, S.L. 2018. Activity of vetiver extracts and essential oil against Meloidogyne incognita. Journal of Nematology. 50(2):147-162.
Evaluation of roselle (Hibiscus sabdariffa) leaf and pomegranate (Punica granatum) fruit rind for activity against Meloidogyne incognita Reprint Icon - (Peer Reviewed Journal)
Meyer, S.L., Chauhan, K.R., Macdonald, M.H. 2016. Evaluation of roselle (Hibiscus sabdariffa) leaf and pomegranate (Punica granatum) fruit rind for activity against Meloidogyne incognita. Nematropica. 46(1):85-96.
Root transformation of Glycine max with responsive promoters to nematode infection - (Peer Reviewed Journal)
Alzohairy, A.M., Macdonald, M.H., Amer, R., Matthews, B.F. 2015. Root transformation of Glycine max with responsive promoters to nematode infection. Egyptian Journal of Genetics and Cytology. 44:149-164.
Ectopic expression of Arabidopsis genes encoding salicylic acid- and jasmonic acid-related proteins confers partial resistance to soybean cyst nematode (Heterodera glycines) in transgenic soybean roots - (Peer Reviewed Journal)
Matthews, B.F., Beard, H.S., Brewer, E.P., Kabir, S., Macdonald, M.H., Youssef, R.M. 2014. Ectopic expression of Arabidopsis genes encoding salicylic acid- and jasmonic acid-related proteins confers partial resistance to soybean cyst nematode (Heterodera glycines) in transgenic soybean roots. Biomed Central (BMC) Plant Biology. 14:96.
Manipulation of two alpha-endo-beta-1,4-glucanase genes, AtCel6 and GmCel7, reduces susceptibility to Heterodera glycines in soybean roots - (Peer Reviewed Journal)
Woo, M., Beard, H.S., Macdonald, M.H., Brewer, E.P., Youssef, R., Kim, H., Matthews, B.F. 2014. Manipulation of two alpha-endo-beta-1,4-glucanase genes, AtCel6 and GmCel7, reduces susceptibility to Heterodera glycines in soybean roots. Molecular Plant Pathology. DOI:15.10.1111/mpp.12157.
Overexpression of four Arabidopsis thaliana NHLgenes in soybean (Glycine max) roots and their effect over resistance to the soybean cyst nematode (Heterodera glycines) - (Peer Reviewed Journal)
Maldonado, A., Macdonald, M.H., Brewer, E.P., Beard, H.S., Youssef, R.M., Matthews, B.F. 2014. Overexpression of four Arabidopsis thaliana NHLgenes in soybean (Glycine max) roots and their effect over resistance to the soybean cyst nematode (Heterodera glycines). Physiological and Molecular Plant Pathology. 86:1-10.
Modification of the expression of two NPR1 suppressors SNC1 and SNI1, in coybean (Glycine max) confers partial resistance to the soybean cyst nematode (Heterodera glycines) - (Peer Reviewed Journal)
Maldonado, A., Macdonald, M.H., Youssef, R.M., Brewer, E.P., Beard, H.S., Matthews, B.F. 2014. Modification of the expression of two NPR1 suppressors SNC1 and SNI1, in coybean (Glycine max) confers partial resistance to the soybean cyst nematode (Heterodera glycines). Functional Plant Biology. 41(7):714-726.
Dynamic proteome analysis of roots of soybean compatible and incompatible to Heterodera glycines - (Peer Reviewed Journal)
Chen, X., Garrett, W.M., Macdonald, M.H., Khan, F.H., Matthews, B.F., Natarajan, S.S. 2013. Dynamic proteome analysis of roots of soybean compatible and incompatible to Heterodera glycines. Current Protemics. 10:278-291.
Evaluation of protein extraction methods suitable for two-dimensional gel electrophoresis of the soybean cyst nematode (Heterodera glycines) - (Peer Reviewed Journal)
Chen, X., Macdonald, M.H., Garrett, W.M., Matthews, B.F., Natarajan, S.S. 2011. Evaluation of protein extraction methods suitable for two-dimensional gel electrophoresis of the soybean cyst nematode (Heterodera glycines). Analytical Biochemistry. 41(2):240-247.
Two-dimensional proteome reference maps for the soybean cyst nematode Heterodera glycines - (Peer Reviewed Journal)
Xi, C., Macdonald, M.H., Khan, F.H., Garrett, W.M., Matthews, B.F., Natarajan, S.S. 2011. Two-dimensional proteome reference maps for the soybean cyst nematode Heterodera glycines. Proteomics. 11(24):4742-4746.
Microarray detection calls as a means to compare transcripts within syncytial cells isolated from incompatible and compatible soybean (Glycine max) roots infected by the soybean cyst nematode (Heterodera glycines) - (Peer Reviewed Journal)
Klink, V.P., Overall, C.C., Alkharouf, N.W., Macdonald, M.H., Matthews, B.F. 2010. Microarray detection calls as a means to compare transcripts within syncytial cells isolated from incompatible and compatible soybean (Glycine max) roots infected by the soybean cyst nematode (Heterodera glycines). Journal of Biomedicine and Biotechnology. 2010(2010):Article ID 491217 30 pages.
Population-specific gene expression in the pathogenic nematode Hederodera glycines exists prior to infection and during the onset of a resistant or susceptible reaction in the roots of Glycine max. - (Peer Reviewed Journal)
Klink, V.P., Hosseini, P., Macdonald, M.H., Alkharouf, N.W., Matthews, B.F. 2009. Population-specific gene expression in the pathogenic nematode Hederodera glycines exists prior to infection and during the onset of a resistant or susceptible reaction in the roots of Glycine max. Biomed Central (BMC) Genomics. 10:111. http://www.biomedcentral.com/1471-2164/10/111.
Protease inhibitor expression in soybean roots exhibiting susceptible and resistance reactions to soybean cyst nematode - (Peer Reviewed Journal)
Nahed, R., Macdonald, M.H., Matthews, B.F. 2008. Protease inhibitor expression in soybean roots exhibiting susceptible and resistance reactions to soybean cyst nematode. Journal of Nematology. 40:138-146.
MiniMax, a new diminutive Glycine max genotype with a rapid life cycle, embryonic potential and transformation capabilities - (Peer Reviewed Journal)
Klink, V.P., Macdonald, M.H., Martins, V., Park, S., Kim, K., Baek, S., Matthews, B.F. 2007. MiniMax, a new diminutive Glycine max genotype with a rapid life cycle, embryonic potential and transformation capabilities. Plant Cell Tissue And Organ Culture. 92:183-195.
A time-course comparative microarray analysis of an incompatible and compatible response by Glycine max (soybean) to Heterodera glycines (soybean cyst nematode) infection - (Peer Reviewed Journal)
Klink, V.P., Overall, C., Macdonald, M.H., Matthews, B.F. 2007. A time-course comparative microarray analysis of an incompatible and compatible response by Glycine max (soybean) to Heterodera glycines (soybean cyst nematode) infection. Planta. 226:1423-1447.
Laser capture microdissection (LCM) and comparative microarray expression analysis of syncytial cells isolated from incompatible and compatible soybean roots infected by soybean cyst nematode (Heterodera glycines) - (Peer Reviewed Journal)
Klink, V.P., Overall, C.C., Aklharouf, N.W., Macdonald, M.H., Matthews, B.F. 2007. Laser capture microdissection (LCM) and comparative microarray expression analysis of syncytial cells isolated from incompatible and compatible soybean roots infected by soybean cyst nematode (Heterodera glycines). Planta. 226:1389-1409.
A decline in transcript abundance for Heterodera glycines homolog Caenorhabditis elegans uncoordinated genes accompanies its sedentary parasitic phase. - (Peer Reviewed Journal)
Martins, V., Klink, V.P., Alkharouf, N., Macdonald, M.H., Matthews, B.F. 2006. A decline in transcript abundance for Heterodera glycines homolog Caenorhabditis elegans uncoordinated genes accompanies its sedentary parasitic phase.. BioMed Central Developmental Biology. 7(35):1-11.
ISOLATION OF A PATHOGENESIS RELATED GENE (PR GENE) USING LASER CAPTURE MICRODISSECTION OF GLYCINE MAX (SOYBEAN) SYNCYTIA - (Abstract Only)
Klink, V.P., Macdonald, M.H., Matthews, B.F. 2006. Isolation of a pathogenesis related gene (pr gene) using laser capture microdissection of glycine max (soybean) syncytia [abstract]. BARC Poster Day. Paper No. 24.
EXPRESSION OF SOYBEAN GENES DURING INVASION OF SUSCEPTIBLE ROOTS BY THE SOYBEAN CYST NEMATODE. - (Peer Reviewed Journal)
Alkharouf, N., Ben Chouikha, I., Beard, H.S., Macdonald, M.H., Meyer, S.L., Knap, H.T. 2006. Expression of soybean genes during invasion of susceptible roots by the soybean cyst nematode.. Molecular Plant-Microbe Interactions. 224:838-852.
ISOLATION OF GENES USING LASER CAPTURE MICRODISSECTION OF GLYCINE MAX (SOYBEAN) SYNCYTIA FORMED BY THE PLANT PATHOGEN HETERODERA GLYCINES, (SOYBEAN CYST NEMATODE). - (Abstract Only)
Klink, V.P., Macdonald, M.H., Alkharouf, N., Matthews, B.F. 2005. Isolation of genes using laser capture microdissection of glycine max (soybean) syncytia formed by the plant pathogen heterodera glycines, (soybean cyst nematode) [abstract]. Cambridge Healthtech Institute Laser Capture Microdissection: Cutting Edge Applications. Paper No. 219.
ISOLATION AND CHARACTERIZATION OF THE SOYBEAN CYST NEMATODE (HETERODERA GLYCINES) HOMOLOG OF CAENORHABDITIS ELEGANS UNC-97 GENE. - (Abstract Only)
Martins, V., Klink, V.P., Alkharouf, N., Macdonald, M.H., Matthews, B.F. 2005. Isolation and characterization of the soybean cyst nematode (heterodera glycines) homolog of caenorhabditis elegans unc-97 gene [abstract]. Mid Atlantic Plant Molecular Biology Society Conference. p. 13. .
ISOLATION OF AN AQUAPORIN (GMPIP2,2) USING LASER CAPTURE MICRODISSECTION OF GLYCINE MAX (SOYBEAN) SYNCYTIA FORMED BY THE PLANT PATHOGEN HETERODERA GLYCINES, (SOYBEAN CYST NEMATODE). - (Abstract Only)
Klink, V.P., Macdonald, M.H., Alkharouf, N., Matthews, B.F. 2005. Isolation of an aquaporin (gmpip2,2) using laser capture microdissection of glycine max (soybean) syncytia formed by the plant pathogen heterodera glycines, (soybean cyst nematode) [abstract]. BARC Poster Day. Paper No. 17.
LASER CAPTURE MICROSCOPY ISOLATION OF SYNCYTIAL CELLS FROM HETERODERA GLYCINES FEEDING SITES AND EST ANALYSIS - (Abstract Only)
Klink, V.P., Macdonald, M.H., Alkharouf, N., Matthews, B.F. 2004. Laser capture microscopy isolation of syncytial cells from heterodera glycines feeding sites and est analysis. Meeting Proceedings. Cambridge Healthtech Institute. P.6.
INTERACTIONS BETWEEN DEFENSE SIGNALING PATHWAYS IN SOYBEAN PLANTS. - (Abstract Only)
Khan, R., Macdonald, M.H., Alkharouf, N., Ben Chouikha, I., Beard, H.S. 2003. Interactions between defense signaling pathways in soybean plants [abstract].. Mid Atlantic Plant Molecular Biology Society Conference. p.31.
MOLECULAR CHARACTERIZATION OF ARGININE KINASES IN THE SOYBEAN CYST NEMATODE (HETERODERA GLYCINES). - (Peer Reviewed Journal)
Matthews, B.F., Tucker, M.L., Macdonald, M.H., Thai, V.K. 2003. Molecular characterization of arginine kinases in the soybean cyst nematode (heterodera glycines).. Journal of Nematology. 35:252-258.
MICROARRAY ANALYSIS OF GENE EXPRESSION IN SOYBEAN ROOTS - (Abstract Only)
GENOMIC EXPRESSION PROFILING IN SOYBEAN PLANTS RESISTANT OR SUSCEPTIBE TO SOYBEAN CYST NEMATODE (SCN). - (Abstract Only)
MICROARRAY ANALYSIS OF GENE EXPRESSION IN SOYBEAN RESISTANT OR SUSCEPTIBLE TO SOYBEAN CYST NEMATODE - (Abstract Only)
GENOMIC EXPRESSION PROFILING IN SOYBEAN PLANTS - (Abstract Only)
MICROARRAY ANALYSIS OF GENE EXPRESSION IN SOYBEAN PLANTS - (Abstract Only)
GENE EXPRESSION PROFILING IN SOYBEAN PLANTS RESISTANT OR SUSCEPTIBLE TO SOYBEAN CYST NEMATODE (SCN) USING MICROARRAY ANALYSIS. - (Abstract Only)
EXPRESSION OF GENENS INVOLVED IN THE RESISTANCE OF SOYBEAN TO SCN - (Abstract Only)
GENOMIC EXPRESSION PROFILING IN SOYBEAN PLANTS RESISTANT OR SUSCEPTIBLE TO SOYBEAN CYST NEMATODE (SCN) - (Abstract Only)
DETECTION OF A CASCADE OF DIFFERENTIALLY EXPRESSED GENES - (Peer Reviewed Journal)
DIFFERENTIALLY EXPRESSED GENES INDUCED IN RESISTANT SOYBEAN PLANTS IN RESPONSE TO SOYBEAN CYST NEMATODE, HEDERODERA GLYCINES, INVASION - (Abstract Only)
PCR MARKERS RESIDING CLOSE TO THE RHG4 LOCUS CONFERRING RESISTANCE TO SOYBEAN CYST NEMATHODE RACE 3 ON LINKAGE GROUP A OF SOYBEAN - (Peer Reviewed Journal)
RAPID ASSAY OF MOLECULAR MARKERS CLOSELY LINKED TO THE RHG4 LOCUS IMPARTINGRESISTANCE TO SOYBEAN CYST NEMATODE RACE 3 - (Peer Reviewed Journal)
DIFFERENTIAL GENE EXPRESSION IN RESPONSE TO SOYBEAN CYST NEMATODE, HETERODERA GLYCINES, INFECTION - (Trade Journal)