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ANATOMICAL COMPARISON OF RESPONSE TO VERTICILLIUM DAHLIAE INFECTION IN RESISTANT AND SUSCEPTIBLE WILD EGGPLANTS

文献类型： 外文期刊

作者： Wu, Liyan 1 ; Li, Zhibin 1 ; Bao, Rui 1 ; Gui, Min 1 ; Gong, Yaju 1 ; Du, Guanghui 2 ;

作者机构： 1.Yunnan Acad Agr Sci, Hort Res Inst, Engn Res Ctr Vegetable Germplasm Innovat & Suppor, Kunming 650205, Yunnan, Peoples R China

2.Yunnan Univ, Inst Resource Plants, Kunming 650500, Yunnan, Peoples R China

关键词： Wild eggplant; Verticillium wilt; Paraffin section; Microstructure; Basal stem

期刊名称：PAKISTAN JOURNAL OF BOTANY （ 影响因子：1.101； 五年影响因子：1.066 ）

ISSN： 0556-3321

年卷期： 2022 年 54 卷 6 期

页码：

收录情况： SCI

摘要： 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.

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