Verticillium wilt,caused by the notorious fungal pathogen Verticillium dahliae,is one of the main limiting factors for cotton production.Due to the stable dormant structure microsclerotia,long-term variability and co-...Verticillium wilt,caused by the notorious fungal pathogen Verticillium dahliae,is one of the main limiting factors for cotton production.Due to the stable dormant structure microsclerotia,long-term variability and co-evolution with host plant,its pathogenicity mechanism is very complicated,and the interaction mechanism between pathogen and host plant is also unclear.So identification and functional analysis of the genes involved in the pathogenicity or virulence of this fungus will benefit to uncover the molecular pathogenic mechanism of V.dahliae.In this review,many multifunction genes covering microsclerotia development,pathogen infection,effector proteins,transcription factors,horizontal gene transfer and trans-kingdom RNA silencing have been summarized to provide a theoretical basis to deep understand the molecular pathogenicity mechanism of V.dahliae and promote to effectively control Verticillium wilt.Furtherly,these pathogenicity-related genes may be considered as targets for effective control of Verticillium wilt in cotton.展开更多
[Objectives]Lotus(Nelumbo nucifera Gaertn)is an economically important aquatic plant in China.Fungal disease is a serious problem in lotus cultivation.In this study,the pathogenic fungi on lotus in Nanchang City were ...[Objectives]Lotus(Nelumbo nucifera Gaertn)is an economically important aquatic plant in China.Fungal disease is a serious problem in lotus cultivation.In this study,the pathogenic fungi on lotus in Nanchang City were investigated to lay the foundation for the disease control.[Methods]Lotus leaves and stems in ponds of Nanchang City were collected,the fungi on leave/stem spots were isolated and purified.Colonies morphological characters and ITS sequences were used to identify the strains.[Results]49 strains were isolated and identified to 20 species,belonging to 12 genera.[Discussion]15 species may firstly be reported on lotus in this study,i.e.,Alternaria angustiovoidea,Alternaria compacta,Alternaria ricini,Alternaria tenuissima,Arthrinium arundinis,Botryosphaeria dothidea,Curvularia spicifera,Diaporthe australiana,Diaporthe eres,Diaporthe tectonae,Epicoccum nigrum,Fusarium fujikuroi,Neofusicoccum parvum,Nigrospora sphaerica,and Phomopsis eucommii.展开更多
The disinfected bacteria will be a photoreactivation under the irradiation of the sunlight,and the light intensity plays an important role in the bacteria resurrection.The effect of light intensity on photoreactivatio...The disinfected bacteria will be a photoreactivation under the irradiation of the sunlight,and the light intensity plays an important role in the bacteria resurrection.The effect of light intensity on photoreactivation of Escherichia coli(E.coli) and Enterococcus faecalis(E.faecalis) in secondary effluents which were disinfected respectively by pure UV and UV-TiO_2 was investigated.The results show that the disinfection efficiency of UV-TiO_2 is much higher than that of the pure UV disinfection.The photoreactivation rate of E.coli is much higher in pure UV disinfection than in UV-TiO_2 photocatalytic disinfection.Under high light intensity in UV-TiO_2 disinfection,high resurrection rate can be induced.However,a higher resurrection rate can be introduced even under low light intensity in pure UV disinfection alone.Meanwhile,UV-TiO_2 disinfection has a strong inhibition effect on E.faecalis photoreactivation.When the light intensity is lower than 21 μW/cm^2,nearly no resurrection of E.faecalis occurs after 72 h resurrection irradiation,and a little resurrection rate is observed only under a strong photoreactivating light intensity.展开更多
基金supported by the Agricultural Science and Technology Innovation Program of Chinese Academy of Agricultural SciencesCentral Publicinterest Scientific Institution Basal Research Fund (No. 1610162021031).
文摘Verticillium wilt,caused by the notorious fungal pathogen Verticillium dahliae,is one of the main limiting factors for cotton production.Due to the stable dormant structure microsclerotia,long-term variability and co-evolution with host plant,its pathogenicity mechanism is very complicated,and the interaction mechanism between pathogen and host plant is also unclear.So identification and functional analysis of the genes involved in the pathogenicity or virulence of this fungus will benefit to uncover the molecular pathogenic mechanism of V.dahliae.In this review,many multifunction genes covering microsclerotia development,pathogen infection,effector proteins,transcription factors,horizontal gene transfer and trans-kingdom RNA silencing have been summarized to provide a theoretical basis to deep understand the molecular pathogenicity mechanism of V.dahliae and promote to effectively control Verticillium wilt.Furtherly,these pathogenicity-related genes may be considered as targets for effective control of Verticillium wilt in cotton.
基金Key projects of the Natural Science Foundation of Jiangxi Provincial Department of Education(GJJ190168)Advantages of Technological Innovation Teambuilding Program of Nanchang City,Innovation and Entrepreneurship Training Program of Jiangxi Agricultural University in 2020(No.147)。
文摘[Objectives]Lotus(Nelumbo nucifera Gaertn)is an economically important aquatic plant in China.Fungal disease is a serious problem in lotus cultivation.In this study,the pathogenic fungi on lotus in Nanchang City were investigated to lay the foundation for the disease control.[Methods]Lotus leaves and stems in ponds of Nanchang City were collected,the fungi on leave/stem spots were isolated and purified.Colonies morphological characters and ITS sequences were used to identify the strains.[Results]49 strains were isolated and identified to 20 species,belonging to 12 genera.[Discussion]15 species may firstly be reported on lotus in this study,i.e.,Alternaria angustiovoidea,Alternaria compacta,Alternaria ricini,Alternaria tenuissima,Arthrinium arundinis,Botryosphaeria dothidea,Curvularia spicifera,Diaporthe australiana,Diaporthe eres,Diaporthe tectonae,Epicoccum nigrum,Fusarium fujikuroi,Neofusicoccum parvum,Nigrospora sphaerica,and Phomopsis eucommii.
基金Projects(51174090,51168026)supported by the National Natural Science Foundation of China
文摘The disinfected bacteria will be a photoreactivation under the irradiation of the sunlight,and the light intensity plays an important role in the bacteria resurrection.The effect of light intensity on photoreactivation of Escherichia coli(E.coli) and Enterococcus faecalis(E.faecalis) in secondary effluents which were disinfected respectively by pure UV and UV-TiO_2 was investigated.The results show that the disinfection efficiency of UV-TiO_2 is much higher than that of the pure UV disinfection.The photoreactivation rate of E.coli is much higher in pure UV disinfection than in UV-TiO_2 photocatalytic disinfection.Under high light intensity in UV-TiO_2 disinfection,high resurrection rate can be induced.However,a higher resurrection rate can be introduced even under low light intensity in pure UV disinfection alone.Meanwhile,UV-TiO_2 disinfection has a strong inhibition effect on E.faecalis photoreactivation.When the light intensity is lower than 21 μW/cm^2,nearly no resurrection of E.faecalis occurs after 72 h resurrection irradiation,and a little resurrection rate is observed only under a strong photoreactivating light intensity.
