HTHF Publications and resources

A range of publications were produced over the course of the Healthy Trees, Healthy Future programme.

HTHF Newsletters

Programme Publications

HTHF produced several information sheets as pdf files.

Science Publications

Gómez-Gallego, M., Leboldus, J.,Bader, M.K-F., Hansen, E.,Donaldson, L., Williams, N.M. (2019). “Contrasting the pathogen loads in co-existing populations of Phytophthora pluvialis and Nothophaeocryptopus gaeumannii in Douglas-fir plantations in New Zealand and the US Pacific Northwest.” Phytopathology. DOI:

LeBoldus, JM, Keriö, SE, Daniels, HA, Gómez-Gallego, M, Tabima-Restrepo, J, Lenz, RR, Søndreli, KL, Grünwald, NJ, Williams, NM and McDougal, RL, (2019). From genomes to forest management – tackling invasive Phytophthora species in the era of genomics. Canadian Journal of Plant Pathology.

Scott P, Taylor P, Williams N (2019). Contrasting the infection and survival of Phytophthora pluvialis and Phytophthora cinnamomi in Pinus radiata roots. Australasian Plant Pathology. DOI 10.1007/s13313-019-0619-7.

Lewis K, Black A, Waipara N, Scott P, Williams N, O’Callaghan M (2019). Land use changes influence the sporulation and survival of Phytophthora agathidicida, a lethal pathogen of New Zealand kauri (Agathis australis). Forest Pathology: e12502. DOI 10.1111/efp.12502.

Scott PM, Taylor P, Gardner J, Puertolas, Panda P, Addison S, Hood I, Burgess T, Horner I, Williams N, McDougal R (2019). Phytophthora aleatoria sp. nov., a root and collar pathogen of Pinus radiata from nurseries and plantations. Australasian Plant Pathology.

Gómez-Gallego M, Gommers, R, Bader, MK, Williams N (2019). Modelling the key drivers of an aerial Phytophthora foliar disease epidemic, from the needles to the whole plant. Accepted In Press. PLoS One. 14(5):e0216161.

Studholme, D., Panda, P, Von Stowasser, E Sanfuentes, González, M, Hill, R, Sambles, C, Grant, M, Williams, NM, McDougal, RL. (2018). “Genome sequencing of oomycete isolates from Chile supports the New Zealand origin of Phytophthora kernoviae and makes available the first Nothophytophthora sp. genome.” Molecular Plant Pathology.

Hunter, S, McDougal, R, Clearwater, M, Williams, N, Scott, P (2018). Development of a high throughput optical density assay to determine fungicide sensitivity of oomycetes. Journal of Microbiological Methods 154 33-39.

Bradshaw R, Scott PM, Williams NM, Herewini E (2018). In vitro assays of Phytophthora agathidicida on kauri leaves suggest variability in pathogen virulence and host response. New Zealand Plant Protection, 71.

Graham, N. J., Suontama, M, Pleasants, T., Li, Y. Bader, MK-F, Klápště, J., Dungey, HS., Williams, NM. (2018). “Assessing the genetic variation of tolerance to red needle cast in a Pinus radiata breeding population.” Tree Genetics & Genomes 14(4): 55.
Wake, G.; Williams, N.; Pleasants, T. (2018). A dynamical systems model for poly-cyclic foliar forest pathogens. ANZIAM J. 59 (EMAC2017) pp.C1–C14, 2018. doi:10.21914/anziamj.v59i0.anziam

Donaldson, L., and Williams, N. (2018). Imaging and Spectroscopy of Natural Fluorophores in Pine Needles. Plants, 7(1), 10.

Wakelin, S. A., Gomez-Gallego, M., Jones, E., Smaill, S., Lear, G., & Lambie, S. (2018). Climate change induced drought impacts on plant diseases in New Zealand. Australasian Plant Pathology, 1-14.

Herewini, E (2017). Development of an in vitro assay to screen Agathis australis (kauri) for resistance to Phytophthora agathidicida : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science at Massey University, Manawatū, New Zealand.

Brar, S., Tabima, J. F., McDougal, R. L., Dupont, P. Y., Feau, N., Hamelin, R. C., Panda, P., LeBoldus, J. M., Grünwald, N. J., Hansen, E. M., Bradshaw, R. E., & Williams, N. M. (2017). Genetic diversity of Phytophthora pluvialis, a pathogen of conifers, in New Zealand and the west coast of the United States of America. Plant Pathology. doi:10.1111/ppa.12812

Gómez-Gallego, M., Bader, M. K.-F., Scott, P. M., Leuzinger, S., & Williams, N. M. (2017). Phytophthora pluvialis Studies on Douglas-fir Require Swiss Needle Cast Suppression. Plant Disease, 101(7), 1259-1262. doi:10.1094/pdis-12-16-1738-re

Bellgard, S.E., Padamsee, M., Probst, C.M., Lebel, T., & Williams, S.E. (2016). Visualizing the early infection of Agathis australis by Phytophthora agathidicida, using microscopy and fluorescent in situ hybridization.

Studholme, D.J., McDougal, R.L., Sambles, C., Hansen, E., Hardy, G., Grant, M., Ganley, R.J., & Williams, N.M. (2016). Genome sequences of six Phytophthora species associated with forests in New Zealand Genom Data. 2016 Mar; 7: 54–56. Published online 2015 Nov 22. doi:  10.1016/j.gdata.2015.11.015

Ganley, R. J., Williams, N. M., Rolando, C. A., Hood, I. A., Dungey, H. S., Beets, P. N., & Bulman, L. S. (2014). Management of red needle cast, caused by Phytophthora pluvialis, a new disease of radiata pine in New Zealand. New Zealand Plant Protection, 67, 48-53.

Pawson, S., Williams, N., Gear, I., & Armstrong, J. (2014). Reducing biosecurity business risks for logs and timber. New Zealand Journal of Forestry, 59(2), 22-28.

Scott, P. M., & Williams, N. M. (2014). Phytophthora diseases in New Zealand forests. New Zealand Journal of Forestry, 59(2), 14-21.

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