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  • Open Access

    ARTICLE

    Early Spatiotemporal Dynamic of Green Fluorescent Protein-Tagged Fusarium oxysporum f. sp. batatas in Susceptible and Resistant Sweet Potato

    Hong Zhang1,2,#, Ying Zhu3,#, Xingyu Li3,#, Zhonghua Liu1,2, Guoliang Li1,2, Zhaomiao Lin1,2, Yongxiang Qiu1,2, Yongqing Xu1,2, Shimin Lyu3, Jiyang Wang3, Sixin Qiu1,2,*

    Phyton-International Journal of Experimental Botany, Vol.94, No.8, pp. 2479-2498, 2025, DOI:10.32604/phyton.2025.064850 - 29 August 2025

    Abstract Vascular wilt caused by Fusarium oxysporum f. sp. batatas (Fob) is a devastating disease threatening global sweet potato production. To elucidate Fob’s pathogenicity mechanisms and inform effective control strategies, we generated a green fluorescent protein (GFP)-tagged Fob strain to track infection dynamics in sweet potato susceptible cultivar Xinzhonghua and resistant cultivar Xiangshu75-55, respectively. Through cytological observation, we found in the susceptible Xinzhonghua, Fob predominantly colonized stem villi, injured root growth points, and directly invaded vascular bundles through stem wounds. Spore germination peaked at 2–3 h post-inoculation (hpi), followed by cyclical mycelial expansion and sporulation within vascular tissues… More >

  • Open Access

    ARTICLE

    Screening of Bacillus subtilis HAAS01 and Its Biocontrol Effect on Fusarium wilt in Sweet Potato

    Chengyang Li1,2,#, Lianjun Wang1,#, Shasha Chai1,#, Yinghua Xu1,2, Chong Wang1,2, Yi Liu1,2, Jian Lei1, Xiaojie Jin1, Xianliang Cheng1, Yuanyuan Yang1, Xinsun Yang1,*, Wenying Zhang2,*

    Phyton-International Journal of Experimental Botany, Vol.91, No.8, pp. 1779-1793, 2022, DOI:10.32604/phyton.2022.020192 - 14 April 2022

    Abstract Fusarium wilt, a disease caused by Fusarium oxysporum f.sp batatas (Fob) is an important disease in sweet potato production. Using endophytic bacteria for biological control of sweet potato diseases is one of the important ways. A Bacillus subtilis with antagonistic effect on Fusarium wilt of sweet potato was isolated from soil by confrontation culture. According to the biological characteristics, 16S rDNA sequence analysis, and physiological and biochemical analysis, the Bacillus subtilis HAAS01 was named. A pot experiment was conducted for the biological control experiment of strain HAAS01, and the endogenous hormone content, antioxidant enzyme activity, soluble protein content, and related More >

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