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  • Open Access


    Phytohormonal and metabolism analysis of Brassica rapa L. ssp. pekinensis with different resistance during Plasmodiophora brassicae infection


    BIOCELL, Vol.44, No.4, pp. 751-767, 2020, DOI:10.32604/biocell.2020.012954

    Abstract Clubroot of Chinese cabbage (Brassica rapa L. ssp. pekinensis), caused by the obligate parasite Plasmodiophora brassicae, accounts for serious yield losses. The aim of our study was to explore the phytohormone levels and metabolome changes in the roots of resistant and susceptible B. rapa genotypes at a late stage of infection, i.e., 28 days post-infection. Both genotypes showed decreased auxin levels after P. brassicae infection except for indole-3-acetic acid. Overall, the susceptible genotype had higher auxin and cytokinin levels after infection, with the exception of trans-zeatin and 3- indolebutyric acid as compared to the resistant genotype. Jasmonic acid levels declined… More >

  • Open Access


    Chemical Constituents from Turnip and Their Effects on α-Glucosidase

    Swastika Paul1,3, Xuemei Zhang1, Yongping Yang2, Changan Geng1,*

    Phyton-International Journal of Experimental Botany, Vol.89, No.1, pp. 131-136, 2020, DOI:10.32604/phyton.2020.08328

    Abstract Brassica rapa var. rapa (turnip) is an important crop in Qinghai-Tibet Plateau (QTP) with anti-hypoxic effect. Turnip is rich in glucosinolates, isothiocyanates and phenolic compounds with diverse biological activities, involving anti-oxidant, anti-tumor, anti-diabetic, anti-inflammatory, anti-microbial, hypolipidemic, cardioprotective, hepatoprotective, nephroprotective and analgesic properties. In this study, the ethyl acetate (EtOAc) and butanol parts of Brassica rapa were first revealed with inhibitory effects on α-glucosidase, whereas the water part was inactive. Subsequent bioassay-guided isolation on the EtOAc and butanol parts yielded 12 compounds, involving three indole derivatives, indole-3- acetonitrile (1) 4-methoxyindole-3-acetonitrile (2) and indole-3-aldehyde (3) two flavonoids, liquiritin (4) and… More >

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