Influence of the Number of Pathogen Causing Banana Fusarium Wilt and Soil Factors on the Infection Degree of Banana Plants

Deng, Xiao; Li, Qin Fen; Wu, Chaoqun; Liu, Jing Kun

doi:10.4028/www.scientific.net/amr.781-784.1989

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…ECa may have the ability to control cucumber Fusarium wilt. Generally, the rhizosphere soils of susceptible plants contain lower levels of AK, AN, and AP [ 41 , 42 , 43 , 44 , 45 ]. Interestingly, in this study, the AK, AN, and AP contents of the rhizosphere soil of severely diseased plants were higher than those of the other two soils.…”

Section: Discussionmentioning

confidence: 99%

Effects of Rhizosphere Microbial Communities on Cucumber Fusarium wilt Disease Suppression

et al. 2023

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Cucumber Fusarium wilt is a worldwide soil-borne disease that seriously restricts the yield and quality of cucumber. The rhizosphere soil microbiome, as the first line of defense against pathogens invading plant roots, plays a key role in rhizosphere immune formation and function. The purpose of this study was to reveal the key microecological factors and dominant microbial flora affecting cucumber resistance and susceptibility to Fusarium wilt by analyzing the physical and chemical properties and microbial flora of rhizosphere soil with different degrees of susceptibility and resistance to cucumber Fusarium wilt, thereby laying a foundation to establish cucumber resistance to the Fusarium wilt rhizosphere core microbiome. Firstly, Illumina Miseq sequencing technology was used to evaluate the physical and chemical properties and microbial groups of cucumber rhizosphere soil at different health levels, and the key environmental factors and microbial factors related to cucumber Fusarium wilt were screened out. Subsequently, PICRUSt2 and FUNGuild were used to predict the functions of rhizosphere bacteria and fungi. Combined with functional analysis, the possible interactions among soil physical and chemical properties, cucumber rhizosphere microorganisms, and Fusarium wilt were summarized. The results showed that the available potassium content in the rhizosphere soil of healthy cucumber decreased by 10.37% and 0.56%, respectively, compared with the rhizosphere soil of severely susceptible cucumber and mildly susceptible cucumber. Exchangeable calcium content increased by 25.55% and 5.39%; the α diversity Chao1 index of bacteria and fungi in the rhizosphere soil of healthy cucumber was significantly lower than that in the rhizosphere soil of seriously infected cucumber, and the MBC content of its physical and chemical properties was also significantly lower than that in the rhizosphere soil of seriously infected cucumber. There was no significant difference in the Shannon and Simpson diversity indexes between healthy cucumber rhizosphere soil and seriously infected cucumber rhizosphere soil. The results of the β diversity analysis showed that the bacterial and fungal community structure of healthy cucumber rhizosphere soil was significantly different from that of severely and mildly infected cucumber rhizosphere soil. At the genus level, through statistical analysis, LEfSe analysis, and RDA analysis, the key bacterial and fungal genera with potential biomarker values were screened out as SHA_26, Subgroup_22, MND1, Aeromicrobium, TM7a, Pseudorhodoplanes, Kocuria, Chaetomium, Fusarium, Olpidium, and Scopulariopsis, respectively. The bacteria SHA_26, Subgroup_22, and MND1 related to cucumber Fusarium wilt inhibition belong to Chloroflexi, Acidobacteriota, and Proteobacteria, respectively. Chaetomiacea belongs to Sordariomycates. The results of functional prediction showed that changes to the KEGG (Kyoto Encyclopedia of Genes and Genomes) pathway in the bacterial microbiota were concentrated in tetracycline biosynthesis, selenocompound metabolism, lipopolysaccharide biosynthesis, etc., which were mainly involved in the metabolism of terpenoids and polyketides, energy metabolism, metabolism of other amino acids, glycan biosynthesis and metabolism, lipid metabolism, cell growth and death, transcription, metabolism of cofactors and vitamins, and biosynthesis of other secondary metabolites. The difference in fungi was mainly dung saprotroph–ectomycorrhizal–soil saprotroph–wood saprotroph. Through the correlation analysis and functional predictions of the key environmental factors, microbial flora, and cucumber health index in cucumber rhizosphere soil, we determined that the inhibition of cucumber Fusarium wilt was a synergistic effect of environmental factors and microbial flora, and a model diagram was drawn to briefly explain its mechanism. This work will provide a basis for the biological control of cucumber Fusarium wilt in the future.

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Section: Discussionmentioning

confidence: 99%

Effects of Rhizosphere Microbial Communities on Cucumber Fusarium wilt Disease Suppression

et al. 2023

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“…Cubense race 4 and usually leads to vascular necrosis in plant stems (Wibowo et al ., ; Shen et al ., ,b; Thangavelu & Gopi, ). Banana Fusarium wilt causes a 20–40% decrease in production, and as much as 90% in farms with seriously conducive soils (Pegg et al ., ; Moore et al ., ; Deng et al ., ). Unfortunately, knowledge of how to track changes in soils infected by Fusarium wilt promptly is still lacking.…”

Section: Introductionmentioning

confidence: 97%

Contrasting physical and biochemical properties of orchard soils suppressive and conducive to Fusarium wilt of banana

ZhaoLiang

Chen

et al. 2017

Soil Use and Management

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Fusarium wilt disease is one of the most serious soil-borne diseases in banana orchards worldwide. Some soils are suppressive to Fusarium wilt, although the mechanisms are still unclear. In this study, two typical banana-growing soils (ultisol and inceptisol), which were either suppressive or conducive to Fusarium wilt, were collected from Hainan, China. Particle size distribution, pH values, electrical conductivity (EC), enzyme activities and microbial polymerase chain reaction amplification of the soil samples were analysed. The suppressive soils had significantly more >2 and <0.053 mm aggregates than the conducive soils. In addition, the suppressive soils had a comparatively even size distribution within the range of 0-0.25 mm. Total carbon, total nitrogen and soil enzyme activities in the aggregates of suppressive soils were also significantly higher than those in the conducive soils. For example, soil invertase activities in the >2 mm aggregates were 7.9-11.9 and 3.2-3.3 mg/g for the suppressive and conducive soils, respectively. Furthermore, in situ EC can be applied as an indicator of the integrated contrast between the suppressive and conducive soils, and could be a new tool for monitoring soil-borne disease.

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Deciphering the suppressiveness of banana Fusarium wilt with organic residues

Heck

Ghini²,

Bettiol³

2019

Applied Soil Ecology

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Influence of the Number of Pathogen Causing Banana Fusarium Wilt and Soil Factors on the Infection Degree of Banana Plants

Cited by 3 publications

References 5 publications

Effects of Rhizosphere Microbial Communities on Cucumber Fusarium wilt Disease Suppression

Effects of Rhizosphere Microbial Communities on Cucumber Fusarium wilt Disease Suppression

Contrasting physical and biochemical properties of orchard soils suppressive and conducive to Fusarium wilt of banana

Deciphering the suppressiveness of banana Fusarium wilt with organic residues

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