Diaporthe eres Nitschke

Diaporthe eres Nitschke , Pyrenomyc. Germ. 2: 245 (1870)

Suppl. material 4

Specimens examined.

China • Beijing City, from diseased branches of J. regia ., Y. Zhang, L. L. Zhao and L. Zhang, 14 December 2021 (2021-JF-6, culture CGMCC 3.28277 View Materials ; CGMCC 3.28281 View Materials ; 2021-JF-10, culture CGMCC 3.28282 View Materials , CGMCC 3.28284 View Materials ) . • Shanxi Province, Jiaokou City , from diseased branches of J. regia , Y. Ding, M. Li and L. L. Zhao, 28 February (JK-4, culture CGMCC 3.28276 View Materials ) . • Yunnan Province, Kunming City , from diseased branches of J. regia , Y. Ding, M. Li and L. L. Zhao, 23 February 2024 (YN-23, culture CGMCC 3.28290 View Materials ) . • Shandong Province, Liaocheng City , from diseased branches of J. regia , Y. Ding, M. Li and L. L. Zhao, 5 February 2024 (LC-12, culture CGMCC 3.28280 View Materials ) . • Hebei Province, Chengde City , from diseased branches of J. regia , Y. Ding, M. Li and L. L. Zhao, 13 February 2024 (CD-3, culture CGMCC 3.28298 View Materials ) .

Notes.

Diaporthe eres was first described by Nitschke (1870) and collected from Ulmus sp. in Germany. It has a wide distribution and a broad host range as a pathogen, endophyte, or saprobe, and can cause a variety of plant diseases ( Udayanga et al. 2014). Hilário et al. (2021 b) and Dissanayake et al. (2024) identified the D. eres complex as a single species, D. eres . Phylogenetically, eight isolates clustered within D. eres (Fig. 3 View Figure 3 ). Therefore, these isolates were confirmed to belong to D. eres , based on sequence data and morphology (Table 1 View Table 1 ). In this study, more than half of the isolates (189, 67.5 %) belong to D. eres , which is nationally distributed in Beijing, Gansu, Hebei, Shandong, Shanxi, and Yunnan, causing walnut branch diseases.