Diaporthe sackstonii R. G. Shivas, S. M. Thomps. & Y. P. Tan

Zhao, Lili, Zhang, Lin, Ding, Yi, Li, Ming & Zhang, Ying, 2025, Diaporthe species (Sordariomycetes, Diaporthales) causing walnut blight and dieback in China, MycoKeys 122, pp. 197-221 : 197-221

publication ID	https://doi.org/10.3897/mycokeys.122.158807
DOI	https://doi.org/10.5281/zenodo.17106191
persistent identifier	https://treatment.plazi.org/id/7486EB78-95E2-56F3-8E5D-47E2A4BAF678
treatment provided by	MycoKeys by Pensoft
scientific name	Diaporthe sackstonii R. G. Shivas, S. M. Thomps. & Y. P. Tan
status

Treatment

Diaporthe sackstonii R. G. Shivas, S. M. Thomps. & Y. P. Tan , Persoonia 35: 46 (2015)

Suppl. material 7

Material examined.

China • Beijing City, Haidian District, JiuFeng forest farm , from branches of J. regia , M. Li, L. L. Zhao and L. Zhang, 26 August 2022 (2022-JF-34, culture CGMCC 3.28287 View Materials , CGMCC 3.28295 View Materials , CGMCC 3.28297 View Materials ) .

Notes.

Diaporthe sackstonii was first described from Helianthus annuus in Australia ( Thompson et al. 2015). Pereira and Phillips (2024) treated D. caryae , D. machili , D. juglandigena , and D. orixae as the synonyms of D. sackstonii . Phylogenetically, three isolates clustered together with D. sackstonii (Fig. 5 View Figure 5 ); the base pair similarity shows 97.5 % (466 / 478) on his, 99.2 % (506 / 510) on ITS, 98.1 % (370 / 377) on tef 1 - α, and 98.6 % (488 / 495) on tub 2 compared to the ex-type of D. sackstonii . Morphologically, the alpha conidia are similar to D. sackstonii (5–7.5 × 2.5–3.5 vs. 6–7 × 2–2.5) (Table 1 View Table 1 ) ( Thompson et al. 2015). In this study, D. sackstonii was collected from the walnut plantation of Beijing. This collection is the first report of D. sackstonii occurring on J. regia .