First Report of Fusarium Root Rot of Tobacco Caused by <i>Fusarium solani</i> in Lincang, China

Yang, Min; Cao, Jingdong; Zheng, Yanhui; Wang, Jiming; Hou-fa, Zhou; He, Mingdong; Duan, Jie; Tong, Wenjie; Deng, Xiaopeng; Chen, Xiaolong; Ding, Yan; Cai, Xin-Zhong; Zhong, Yu; Huang, Feiyan; He, Yuansheng; Yu, Lei

doi:10.1094/pdis-08-19-1711-pdn

Cited by 12 publications

(5 citation statements)

References 6 publications

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“… Wang et al (2023) also found differences in community composition and multifunctionality between healthy and Alternaria solani -infected potato rhizosphere soils. The rootstock diseases of tobacco are mostly caused by fungi ( Modjo and Hendrix, 1986 ; Gonzalez et al, 2011 ; Yang et al, 2020 ), and the pathogens may affect the soil microbial community by changing the rhizosphere secretions of crops in addition to directly attaching to the root surface and contacting the soil ( Liu et al, 2022 ). Of course, such findings do not negate the conclusion that regional differences have a significantly greater impact than rootstock diseases in the analysis of microbial diversity, core taxa, and co-occurrence networks.…”

Section: Discussionmentioning

confidence: 99%

Comparison of the response of microbial communities to region and rootstock disease differences in tobacco soils of southwestern China

Yi,

Li,

Shang

et al. 2023

Front. Microbiol.

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IntroductionSoil microorganisms are essential for crop growth and production as part of soil health. However, our current knowledge of microbial communities in tobacco soils and their impact factors is limited.MethodsIn this study, we compared the characterization of bacterial and fungal communities in tobacco soils and their response to regional and rootstock disease differences.Results and discussionThe results showed that the diversity and composition of bacterial and fungal communities responded more strongly to regional differences than to rootstock diseases, while bacterial niche breadth was more sensitive than fungi to regional differences. Similarly, the core bacterial and fungal taxa shared by the three regions accounted for 21.73% and 20.62% of all OTUs, respectively, which was much lower than that shared by RD and NRD in each region, ranging from 44.87% to 62.14%. Meanwhile, the differences in topological characteristics, connectivity, and stability of microbial networks in different regions also verified the high responsiveness of microbial communities to regions. However, rootstock diseases had a more direct effect on fungal communities than regional differences.ConclusionThis provided insight into the interactions between microbial communities, regional differences, and rootstock diseases, with important implications for maintaining soil health and improving tobacco yield and quality.

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Section: Discussionmentioning

confidence: 99%

Comparison of the response of microbial communities to region and rootstock disease differences in tobacco soils of southwestern China

Yi,

Li,

Shang

et al. 2023

Front. Microbiol.

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“…Penicillium species have shown to suppress the root rot disease caused by Fusarium species and promote plant growth ( Wang et al, 2022a ). Fusarium species like F. oxysporum and F. solani are the major cause of tobacco root rot disease ( Yang et al, 2020a ; Gai et al, 2021 ). Fusarium oxysporum is one of the most prevalent plant disease, ranking fifth among the top ten plant fungal infections ( Dean et al, 2012 ).…”

Section: Discussionmentioning

confidence: 99%

“…Chlorosis and wilt are disease indicators that spread from the bottom to the top leaves. Members of FOSC and FSSC have been associated with tobacco wilt and root rot in China ( Yang et al, 2020a ; Gai et al, 2021 ) and other tobacco-growing regions worldwide ( Berruezo et al, 2018 ; Abd-El-Khair et al, 2019 ). FSSC and FOSC pathogens are responsible for crop losses of up to 15–20% of global tobacco production.…”

Section: Introductionmentioning

confidence: 99%

Differentially enriched fungal communities in root rot resistant and susceptible varieties of tobacco (Nicotiana tabacum L.) under continuous monoculture cropping

Wang²,

Yang³

et al. 2022

Front. Microbiol.

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Root rot is a major disease of tobacco that causes crop losses of up to 15–20% of global tobacco production. The present study aimed to compare the fungal communities, and physicochemical properties of rhizosphere soil of root rot resistant (Yunyan 87; Y) and susceptible (Honghua Dajinyuan; H) tobacco varieties. Four treatments of each variety under continuous monocropping cultures included: control groups (HT0 and YT0); 2 years of continuous cropping (HT2 and YT2); 4 years of continuous cropping (HT4 and YT4); and 8 years of continuous cropping (YT8 and HT8). The soil physicochemical properties including available nitrogen (AN), available phosphorus (AP), available potassium (AK), and organic matter (OM) were increased (p < 0.05) from HT0 to HT8, whereas the resistant variety (Y) showed an inconsistent trend from YT0 to YT8. The pH was decreased (p < 0.05) from HT0 to HT8 and YT0 to YT8. Further, the disease incidence rate and disease index of the H variety also increased (p < 0.05) from HT0 to HT8. Alpha diversity analysis revealed that susceptible variety had higher fungal diversity from HT0 to HT8, while resistant variety exhibited lower diversity from YT0 to YT8. Ascomycota and Mortierellomycota were the dominant phyla in H and Y. Ascomycota abundance was increased (p < 0.05), whereas Mortierellomycota was decreased (p < 0.05) for continuous cropping years in H and Y. Penicillium, Fusarium, and Chrysosporium were the top three abundant genera in both varieties. The relative abundance of Penicillium spp. was increased (p < 0.05) in Y, whereas decreased (p < 0.05) in H variety. Specifically, Chrysosporium spp. was increased (p < 0.05) whereas Fusarium spp. was decreased (p < 0.05) in YT2. Redundancy analysis (RDA) revealed that fungal communities in H and Y rhizospheres were influenced by pH and carbon content, respectively. The top three highly enriched (p < 0.05) pathways in both varieties were fatty acid elongation, fatty acid β-oxidation I, and glyoxylate cycle. Our study concluded that resistant variety exhibited lower fungal diversity and functionally enriched metabolic pathways than susceptible variety that might be the result of molecular breeding practices, however, the relative abundance of Penicillium spp. were increased in resistant variety under long-term monoculture cropping.

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“…The typical symptoms of Fusarium rot root in tobacco include the chlorosis of lower leaves, decaying of root and vascular discoloration. Generally, stem and taproot showed reddish to brown vascular discoloration, and the whole plant died in the end [5]. This pathogen was soil bored and could be detected both inside and exterior of the seed.…”

Section: Introductionmentioning

confidence: 99%

Complete genome sequence of a novel mitovirus from the phytopathogenic fungus Fusarium oxysporum

et al. 2021

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Fusarium oxysporum is a cosmopolitan plant pathogen causing Fusarium wilt and Fusarium root rot in many economically important crops. There is still limited information about mycoviruses that infect F. oxysporum. Here, a novel mitovirus tentatively named Fusarium oxysporum mitovirus 1 (FoMV1) was identi ed from F. oxysporum strain B2-10. The genome of FoMV1 is 2,453 nt in length with a predicted AU content of 71.6%, and contains one large open reading frame (ORF) using the fungal mitochondrial genetic code. The ORF encodes RNA-dependent RNA polymerases (RdRp) of 723 amino acids with a molecular mass of 84.98 kDa. The RdRp domain of FoMV1 shares 29.01-68.43% sequence similarity to the members of the family Mitoviridae. Phylogenetic analysis further suggested that FoMV1 is a new member of a distinct species in the genus Mitovirus.

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First Report of Fusarium Root Rot of Tobacco Caused by Fusarium solani in Lincang, China

Cited by 12 publications

References 6 publications

Comparison of the response of microbial communities to region and rootstock disease differences in tobacco soils of southwestern China

Comparison of the response of microbial communities to region and rootstock disease differences in tobacco soils of southwestern China

Differentially enriched fungal communities in root rot resistant and susceptible varieties of tobacco (Nicotiana tabacum L.) under continuous monoculture cropping

Complete genome sequence of a novel mitovirus from the phytopathogenic fungus Fusarium oxysporum

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