Richard M. Bostock

Richard Bostock

Position Title
Distinguished Professor Emeritus of Plant Pathology

  • Department of Plant Pathology, College of Agricultural and Environmental Sciences
256 Hutchison Hall

Profile Introduction

Research projects in my lab focus on plant diseases caused by fungal and oomycete pathogens. We use various host plants that include tomato, pepper, and Arabidopsis, orchard crops such as almond, peach, walnut, and pistachio, and nursery ornamentals. Our interests generally are mechanistic with a strong emphasis on cellular, molecular and biochemical aspects of the plant-microbe interaction. However, we also explore disease etiology, epidemiology, and management, particularly in our orchard crops projects.

Research Interests

General areas of emphasis in my research program are the biochemistry and molecular biology of plant-microbe interactions and diseases of orchard crops. Recent or current research projects include: lipid-based signaling in defense networks and programmed cell death (apoptosis) in plants; signal interactions in induced resistance to pathogens and insects; abiotic root stress in predisposition to diseases caused by Phytophthora spp.; and fungal diseases of orchard crops and perennial hosts.

Grad Group Affiliations

  • Plant Biology
  • Plant Pathology

Specialties / Focus

  • Environmental and Integrative Biology
  • Molecular Biology, Biochemistry and Genomics


  • PLP 120 Introductory Plant Pathology, Spring
  • PLP 210 Biochemistry and Molecular Biology of Plant-Microbe Interactions, Winter
  • SAS 002 Feeding the World: Influences on the Global Food Supply, Winter
  • SAS 002V Feeding the World: Influences on the Global Food Supply, online, Winter, Spring (UC Systemwide)
  • PLP 291 Seminar in Molecular Plant Pathology, Winter


  • Bostock Lab - 205 Hutchison Hall
    • Dr. Sara Dye; Tatiana Roubtsova; Jason Simmons; Domonique Lewis

Field Sites

  • National Ornamentals Research Site - Dominican University of California
  • Juglans National Clonal Germplasm Repository, Wolfskill Experimental Orchards, Winters, CA

Honors and Awards

  • Gamma Sigma Delta (UCD Chapter President - 2001-02)
  • Sigma Xi
  • 2010 USDA-NIFA Partnership Award for Innovative Program Models, National Plant Diagnostic Network
  • Fellow, American Phytopathological Society, 2012
  • Fellow, AAAS, 2013
  • Distinguished Professor, 2019

    Professional Societies

    • American Phytopathological Society
    • American Society of Plant Biologists
    • American Association for the Advancement of Science


    • 1974 BS Biology Rhodes College
    • 1981 PhD Plant Pathology University of Kentucky

    Publications (since 2005)

    Zhang D-D, Wang J, Wan D, Kong Z-Q, Zhou L, Zhang G-Y, Gui Y-J, Li J-J, Huang J-Q, Wang B-L, Liu C, Yin C-M, Li R-X, Li G-G, Wan J-L, Short DPG, Klosterman SJ, Bostock RM, Subbarao KV, Chen J-Y, and Dai X-F. 2019 Population genomics demystifies the defoliation phenotype in the plant pathogen Verticillium dahlia. New Phytologist doi:10.1111/nph.15672

    McCartney, M. M., Roubtsova, T. V., Yamaguchi, M. S., Kasuga, T., Ebeler, S. E., Davis, C. E., and Bostock, R. M. 2018. Effects of Phytophthora ramorum on volatile organic compound emissions of Rhododendron using gas chromatography-mass spectrometry. Analytical and Bioanalytical Chemistry 410:1475-1487.

    Pye, M. F., Dye, S. M., Resende, R. S., MacDonald, J. D., and Bostock, R. M. 2018. Abscisic acid as a dominant signal in tomato during salt stress predisposition to Phytophthora root and crown rot. Frontiers in Plant Science 9: doi: 10.3389/fpls.2018.00525

    Stack, A. J., Yaghmour, M. A., Kirkpatrick, S. C., Gordon, T. R., and Bostock, R. M. 2017. First report of Fusarium brachygibbosum causing cankers in cold-stored, bare-root propagated almond trees in California. Plant Disease 101:390-390.

    Hishinuma S, Dallara P, Parker C, Roubtsova T, Tisserat N, Zerillo M, Bostock R, Flint M, Seybold S. (2016) Wingnut (Pterocarya sp.) as a new generic host for Pityophthorus juglandis (Coleoptera: Scolytidae). The Canadian Entomologist 148:83-91

    Burrows M, Thomas C, McRoberts N, Bostock RM, Coop L, and Stack J. (2016). Coordination of diagnostic efforts in the Great Plains: Wheat virus survey and modelling of disease onset. Plant Disease 6:1037-45.

    Saa, S., Peach-Fine, E., Brown, P., Michailides, T., Castro, S., Bostock, R., and Laca, E. 2016. Nitrogen increases hull rot and interferes with the hull split phenology in almond (Prunus dulcis). Scientia Horticulturae 199:41-48.

    Cueto-Ginzo AI, Serrano L, Bostock RM, Ferrio JP, Rodriguez R, Arcal L, Achon MA, Falcioni T, Luzuriaga WP, and Medina V. (2016). Salicylic acid mitigates physiological and proteomic changes induced by the SPCP1 strain of Potato virus X in tomato plants.  Physiol. Mol. Plant Pathol. 93:1-11.

    Hishinuma S, Dallara P, Parker C, Roubtsova T, Tisserat N, Zerillo M, Bostock R, Flint M, Seybold S. (2016) Wingnut (Pterocarya sp.) as a new generic host for Pityophthorus juglandis (Coleoptera: Scolytidae). The Canadian Entomologist 148:83-91

    Chou C-M, Yu F-Y, Yu P-L, Ho J-F, Bostock RM, Chung K-R, Huang J-W,and Lee M-H. (2015). Expression of five endopolygalacturonase genes and demonstration that MfPG1 overexpression diminishes virulence in the brown rot pathogen Monilinia fructicola.  PLoS ONE 10(6):e0132012.

    Robinson SM and Bostock RM. β-Glucans and eicosapolyenoic acids as MAMPs in plant-oomycete interactions: past and present. (2015) Frontiers Plant Sci. 5:797.

    Bostock RM, Thomas C, Hoenisch RW, Golino DA, Vidalakis G. (2014) Plant health: How diagnostic networks and inter-agency partnerships protect plant systems from pests and pathogens. California Agriculture 68:117-124.

    Bostock RM, Robinson SM, Pye MF, Kasuga T, Dehesh K. (2014) Arachidonate-induced immunity and mixed messages in plant-oomycete interactions, KR Freitas Schwan-Estrada, C Mendes da Silva, A Jose Maia, CM Duarte Rios Faria, J Cesar T. Colella, (ed), Indução de Resistência em Plantas a Patógenos, Centro de Ciências Agrárias, Maringá, UEM/MPA, 9-27

    Yaghmour MA, Nguyen TL, Roubtsova TV, Hasey JK, Fichtner EJ, DeBuse C, Seybold SJ, Bostock RM. (2014) First report of Geosmithia morbida on English walnut and its Paradox rootstock in California. Plant Disease 98: 1441.

    DiLeo MV, Bostock RM, Rizzo DM. (2014) Microclimate impacts survival and prevalence of Phytophthora ramorum in Umbellularia californica, a key reservoir host of sudden oak death in northern California forests. PLoS ONE. doi:10.1371/journal.pone.0098195, 9(8): e98195.

    Stack JP, Bostock RM, Hammerschmidt R, Jones JB, and Luke E. (2014) The National Plant Diagnostic Network: Partnering to protect plant systems. Plant Disease 98:708-715.

    Bostock RM, Pye MF, and Roubtsova T. (2014) Predisposition in plant disease: exploiting the nexus in abiotic and biotic stress perception and response. Annu. Rev. Phytopathol. 52:517-49

    Pye MF, Hakuno F, MacDonald JD, and Bostock RM (2013) Induced resistance in tomato by SAR activators during predisposing salinity stress. Frontiers Plant Sci. doi: 10.3389/fpls.2013.00116

    Walley JW, Kliebenstein DJ, Bostock RM, and Dehesh K (2013) Fatty acids and early detection of pathogens. Curr. Opin. Plant Biol. 16:520-526

    Marti´nez-Garci´a PJ, Parfitt DE, Bostock RM, Fresnedo-Rami´rez J, Vazquez-Lobo A, et al. (2013) Application of Genomic and Quantitative Genetic Tools to Identify Candidate resistance genes for brown rot resistance in peach. PLoS ONE 8(11): e78634.

    Inderbitzin P, Davis RM, Bostock RM, Subbarao KV (2013) Identification and differentiation of Verticillium species and V. longisporum lineages by simplex and multiplex PCR assays. PLoS ONE 8(6): e65990. doi:10.1371/journal.pone.0065990

    Utley, C., Nguyen T, Roubtsova T, Coggeshall M, Ford TC, Grauke LJ, Graves AD, Leslie CA, Mckenna J, Woeste K, Yaghmour MA, Cranshaw W, Seybold SJ, Bostock RM, Tisserat N. (2013) Susceptibility of walnut and hickory species to Geosmithia morbida. Plant Disease, 97:601-607

    Marek SM, Yaghmour MA, and Bostock RM. (2013) Fusarium spp., Cylindrocarpon spp., and predisposing environmental stress in the etiology of a canker disease of cold-stored fruit and nut tree seedlings in California. Plant Dis. 97:259-270.

    Chiu C-M, B-J You, C-M Chou, P-L Yua, F-Y Yua, S-M Pana, RM Bostock, K-R Chung and M-L Lee. (2013) Redox status-mediated regulation of gene expression and virulence in the brown rot pathogen Monilinia fructicola. Plant Pathology 62:809-819.

    Yaghmour MA, Bostock RM, Morgan DP, and Michailides TJ. 2012. Biology and sources of inoculum of Geotrichum candidum causing sour rot of peach and nectarine fruit in California. Plant Dis. 96:204-210.

    Yaghmour MA, Bostock RM, Adaskaveg JE, and Michailides TJ. 2012. Propiconazole sensitivity in populations of Geotrichum candidum, the cause of sour rot of peach and nectarine, in California. Plant Dis. 96:752-758.

    Inderbitzin P, Bostock RM, and Subbarao KV. 2012. Cylindrocladiella hahajimaensis, a new species of Cylindrocladiella transferred from Verticillium. MycoKeys 4: 1-8.

    Inderbitzin P, Davis RM, Bostock RM, Subbarao KV. 2011. The Ascomycete Verticillium longisporum is a hybrid and a plant pathogen with an expanded host range. PLoS ONE 6(3): e18260. doi:10.1371/journal.pone.0018260

    Inderbitzin P, Bostock RM, Davis RM, Usami T, Platt HW, Subbarao KV. 2011. Phylogenetics and taxonomy of the fungal vascular wilt pathogen Verticillium, with the descriptions of five new species. PLoS ONE 6(12): e28341. doi:10.1371/journal.pone. 0028341

    Bostock RM, Savchenko T, Lazarus CM, Dehesh K. 2011. Eicosapolyenoic acids: novel MAMPs with reciprocal effect on oomycete-plant defense signaling networks. Plant Signaling and Behavior 6:531-33

    Fletcher J., Luster D, Bostock R, Burans J, Cardwell K, Gottwald T, McDaniel L, Royer M, and Smith K. 2010. Emerging infectious plant diseases. In Scheld WM, Grayson ML, and Hughes JM (eds.). Emerging Infections 9, pp 337-366 ASM Press, Washington, DC

    Inderbitzin P, Bostock RM, Trouillas FP, Michailides TJ. 2010. A six locus phylogeny reveals high species diversity in Botryosphaeriaceae from California almond. Mycologia 102(6):1350-68

    DiLeo MV, Pye MF, Roubtsova TV, Duniway JM, MacDonald JD, Rizzo DM, and Bostock RM. 2010. Abscisic acid in salt stress predisposition to Phytophthora root and crown rot in tomato and chrysanthemum. Phytopathology 100:871-879

    Lee M-H, Chiu C-M, Roubtsova T, Chou C-M, and Bostock RM. 2010. Overexpression of a redox-regulated cutinase gene MfCUT1 increases virulence of the brown rot pathogen Monilinia fructicola on Prunus spp. Molecular Plant Microbe Interactions 23:176-186.

    Savchenko T, Walley JW, Chehab EW, Xiao Y, Kaspi R, Pye MF, Mohamed ME, Lazarus CM, Bostock RM, and Dehesh K. 2010. Arachidonic acid: an evolutionarily conserved signaling molecule modulates plant stress signaling networks. Plant Cell 22: 3193-3205

    Su SYW, Beck HW, Xiao X, DePree J, Degwekar S, Zhou C, Lee M, Thomas C, Coggeshall A, and Bostock R. 2010. ETKnet: A Distributed Network System for Sharing Event Data and Multi-faceted Knowledge in a Collaboration Federation. In Yang, C.C., M.C.-L Chau, J. -H Wang, and H. Chen (eds.) Security Informatics. VII, pp. 135-154

    DiLeo MV, Bostock RM, and Rizzo DM. 2009. Phytophthora ramorum does not cause physiologically significant systemic injury to California bay laurel, its primary reservoir host. Phytopathology 99:1307-1311.

    Roubtsova, T. V., and Bostock, R. M. 2009. Episodic abiotic stress as a potential contributing factor to onset and severity of disease caused by Phytophthora ramorum in Rhododendron and Viburnum. Plant Disease 93:912-918.

    Lee, M-H. and Bostock, R.M. 2007. Fruit exocarp phenols in relation to quiescence and development of Monilinia fructicola infections in Prunus: a role for cellular redox? Phytopathology 97:269-277

    Weyman PD, Pan Z, Feng Q, Gilchrist DG, and Bostock RM. 2006. DEA1, a Circadian- and Cold-Regulated Tomato Gene, Protects Yeast Cells from Freezing Death. Plant Molecular Biology 62:547-559.

    Lee M-H and Bostock RM. 2006. Induction, regulation, and role in pathogenesis of appressoria in Monilinia fructicola. Phytopathology 96:1072-1080.

    Lee M-H and Bostock RM. 2006. Agrobacterium T-DNA-mediated integration and gene replacement in the brown rot pathogen Monilinia fructicola. Current Genetics 49: 309-322.

    Weyman PD, Pan Z, Feng Q, Gilchrist DG, and Bostock RM. 2006. A circadian rhythm-regulated tomato gene is induced by arachidonic acid and Phythophthora infestans infection. Plant Physiology 140: 235-248.

    Stack J, Cardwell K, Hammerschmidt R, Byrne J, Loria R, Snover-Clift K, Baldwin W, Wisler G, Beck H, Bostock R, Thomas C, Luke E. 2006. The National Plant Diagnostic Network. Plant Disease 90:128-136.

    Bostock RM. 2005. Signal crosstalk and induced resistance: straddling the line between cost and benefit. Annual Review of Phytopathology 43: 545-580.