PJB-2021-178
Anatomical comparison of response to Verticillium dahliae infection in resistant and susceptible wild eggplants
Liyan Wu, Zhibin Li, Rui Bao, Min Gui, Yaju Gong and Guanghui Du
Abstract
To compare the anatomical response of plant stems to Verticillium dahliae infection, two strains of wild eggplants, Verticillium wilt-resistant Solanum sisymbriifolium Lam. (197) and susceptible ‘daliyeqie’ (239), were used in this study. Histological observations were conducted at 0, 14, 28, 40, and 60 days post inoculation, using paraffin slices assessed via transmitted light microscopy. Quantitative and qualitative differences in stem microstructure were assessed using captured images. Transverse sections of basal stem showed reduced epidermal cell and parenchyma cell layers and xylem vessel size in stems of 197 compared with those of 239. In general, the stem microstructure of 197 was more closely arranged compared to that of 239. During pathogenic infection, similar induced resistant changes were noted in the stem microstructures of 197 and 239. However, increased lignin deposition in xylem vessels of 197 was observed after infection. In addition, stem growth in 239 was severely inhibited, and stem structure was destroyed upon pathogen infection. These inherent and induced features associated with resistance provide a more complete understanding of resistance mechanisms of wild eggplant to Verticillium wilt
To Cite this article:
Wu, L., Z. Li, R. Bao, M. Gui, Y. Gong and G. Du. 2022. Anatomical comparison of response to Verticillium dahliae infection in resistant and susceptible wild eggplants. Pak. J. Bot., 54(6): DOI: http://dx.doi.org/10.30848/PJB2022-6(35)
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