scholarly journals Phenolic Acid-Degrading Consortia Increase Fusarium Wilt Disease Resistance of Chrysanthemum

Agronomy ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 385
Author(s):  
Cheng Zhou ◽  
Zhongyou Ma ◽  
Xiaoming Lu ◽  
Lin Zhu ◽  
Jianfei Wang
Keyword(s):  
Microbial Community ◽  
Fusarium Wilt ◽  
Wilt Disease ◽  
Disease Suppression ◽  
Suppressive Soil ◽  
Soil Borne Pathogens ◽  
Fusarium Wilt Disease ◽  
Pseudomonas Species ◽  
Conducive Soil

Soil microbial community changes imposed by the cumulative effects of root-secreted phenolic acids (PAs) promote soil-borne pathogen establishment and invasion under monoculture systems, but the disease-suppressive soil often exhibits less soil-borne pathogens compared with the conducive soil. So far, it remains poorly understood whether soil disease suppressiveness is associated with the alleviated negative effects of PAs, involving microbial degradation. Here, the long-term monoculture particularly shaped the rhizosphere microbial community, for example by the enrichment of beneficial Pseudomonas species in the suppressive soil and thus enhanced disease-suppressive capacity, however this was not observed for the conducive soil. In vitro PA-degradation assays revealed that the antagonistic Pseudomonas species, together with the Xanthomonas and Rhizobium species, significantly increased the efficiency of PA degradation compared to single species, at least partially explaining how the suppressive soil accumulated lower PA levels than the conducive soil. Pot experiments further showed that this consortium harboring the antagonistic Pseudomonas species can not only lower PA accumulation in the 15-year conducive soils, but also confer stronger Fusarium wilt disease suppression compared with a single inoculum with the antagonistic bacteria. Our findings demonstrated that understanding microbial community functions, beyond the single direct antagonism, facilitated the construction of active consortia for preventing soil-borne pathogens under intensive monoculture.

Microflora that harbor the NRPS gene are responsible for Fusarium wilt disease-suppressive soil

2018 ◽  
Vol 132 ◽  
pp. 83-90 ◽  
Author(s):  
Mengli Zhao ◽  
Jun Yuan ◽  
Ruifu Zhang ◽  
Menghui Dong ◽  
Xuhui Deng ◽  
...  
Keyword(s):  
Fusarium Wilt ◽  
Wilt Disease ◽  
Nrps Gene ◽  
Suppressive Soil ◽  
Fusarium Wilt Disease ◽  
Disease Suppressive Soil

THE EFFECT OF SILICA AND MANURE ADDITION INTO SUPPRESSIVE AND CONDUCIVE SOIL ON THE INCIDENCE OF FUSARIUM WILT DISEASE OF BANANA

2014 ◽  
pp. 55-60
Author(s):  
A. Wibowo ◽  
S.N.H. Utami ◽  
S. Subandiyah ◽  
M.U.A. Somala ◽  
A. Pattison ◽  
...  
Keyword(s):  
Fusarium Wilt ◽  
Wilt Disease ◽  
Fusarium Wilt Disease ◽  
Conducive Soil

scholarly journals Inducing Banana Fusarium Wilt Disease Suppression through Soil Microbiome Reshaping by Pineapple-Banana Rotation Combined with Biofertilizer Application

2021 ◽  
Author(s):  
Beibei Wang ◽  
Jinming Yang ◽  
Zongzhuan Shen ◽  
Yannan Ou ◽  
Lin Fu ◽  
...  
Keyword(s):  
Fusarium Wilt ◽  
Fungal Community ◽  
Organic Fertilizer ◽  
Fertilizer Application ◽  
Wilt Disease ◽  
Disease Suppression ◽  
Fungal Communities ◽  
Soil Microbiome ◽  
Fungal Community Composition ◽  
Fusarium Wilt Disease

Abstract. Crop rotation and bio-organic fertilizer application have historically been employed as efficient management strategies for soil-borne disease suppression through soil microbiome manipulation. However, details of how this occurs, and to what extent the combination of methods affects soil microbiota reconstruction from diseased soils lacks investigation. In this study, pineapple-banana rotation combined with biofertilizer application was used to suppress banana Fusarium wilt disease, and effects on both bacterial and fungal communities were investigated using the Miseq Illumine sequencing platform. Our results show that pineapple-banana rotation significantly reduces Fusarium wilt disease incidence, and that the application of bio-organic fertilizer causes additional suppression. Bacterial and fungal communities thrive using rotation in combination with bio-organic fertilizer application: taxonomic and phylogenetic α-diversity in both bacteria and fungi increase along with disease suppression. Between the two strategies, bio-organic fertilizer application affects both bacterial and fungal community composition most predominantly, followed by rotation. Large-scale changes in the fungal community composition and special Burkholderia-related network functions contribute to the observed soil borne-disease suppression. Our results indicate that pineapple-banana rotation combined with bio-organic fertilizer application has strong potential for the sustainable management of banana Fusarium wilt disease.

In vitro and field screening of okra cultivars against Fusarium wilt disease

2020 ◽  
Vol 26 (1) ◽  
pp. 129
Author(s):  
B. Hanumanthe Gowda ◽  
P. R. Ramesh ◽  
M. Saifulla
Keyword(s):  
Fusarium Wilt ◽  
Wilt Disease ◽  
Field Screening ◽  
Fusarium Wilt Disease

scholarly journals Assessing the Influence of Fumigation and Bacillus Subtilis-Based Biofungicide on the Microbiome of Chrysanthemum Rhizosphere

Agriculture ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 255
Author(s):  
Huijie Chen ◽  
Jiamiao Zhao ◽  
Jing Jiang ◽  
Sumei Chen ◽  
Zhiyong Guan ◽  
...  
Keyword(s):  
Bacillus Subtilis ◽  
Fusarium Wilt ◽  
Fungal Diversity ◽  
Severe Disease ◽  
Wilt Disease ◽  
Disease Suppression ◽  
Soil Microbiome ◽  
Trichoderma Spp ◽  
Treated Soil ◽  
Fusarium Wilt Disease

Chrysanthemum is an important ornamental species in China. However, sustained monoculture often leads to a decline in soil quality, in particular to the build-up of pathogens. Fusarium wilt, a severe disease in chrysanthemum monoculture systems, was effectively controlled by fumigation and/or the application of a biofungicide in our previous study. However, the mechanisms underlying disease suppression remain elusive. Here, a series of greenhouse experiments were conducted to characterize the effect on the chrysanthemum rhizosphere microbiome of the fumigant dazomet (DZ) and of a biofungicide based on Bacillus subtilis NCD-2 (BF). The results indicated that the BF treatment increased bacterial diversity by 4.2%, while decreasing fungal diversity by 21.3%. After two seasons of BF treatment, the abundance of microbes associated with disease suppression such as Bacillus spp. and Trichoderma spp. increased 15.1-fold and 4.25-fold more than that of the control, while the pathogenic Fusarium oxysporum was decreased by 79.20% when compared to the control. Besides, the DZ treatment reduced both bacterial and fungal diversity 7.97% and 2.73% respectively, when compared with the control. The DZ treatment controlled Fusarium wilt disease and decreased the abundance of F. oxysporum in the first year, but the abundance of the F. oxysporum was 43.8% higher after two years in treated soil than in non-treated soil. Therefore, the application of BF has a great potential for the control of Fusarium wilt disease in chrysanthemum by changing soil microbiome structure and function.

Effect of genotype and root colonization in biological control of fusarium wilts in pigeonpea and chickpea byPseudomonas aeruginosaPNA1

2003 ◽  
Vol 49 (2) ◽  
pp. 85-91 ◽  
Author(s):  
Vanamala Anjaiah ◽  
Pierre Cornelis ◽  
Nico Koedam
Keyword(s):  
Fusarium Wilt ◽  
Root Colonization ◽  
Wilt Disease ◽  
Disease Suppression ◽  
Tn5 Mutants ◽  
Phenazine Production ◽  
Phenazine Antibiotics ◽  
Fusarium Wilts

Pseudomonas aeruginosa PNA1, an isolate from chickpea rhizosphere in India, protected pigeonpea and chickpea plants from fusarium wilt disease, which is caused by Fusarium oxysporum f.sp. ciceris and Fusarium udum. Inoculation with strain PNA1 significantly reduced the incidence of fusarium wilt in pigeonpea and chickpea on both susceptible and moderately tolerant genotypes. However, strain PNA1 protected the plants from fusarium wilt until maturity only in moderately tolerant genotypes of pigeonpea and chickpea. Root colonization of pigeonpea and chickpea, which was measured using a lacZ-marked strain of PNA1, showed tenfold lower root colonization of susceptible genotypes than that of moderately tolerant genotypes, indicating that this plant–bacteria interaction could be important for disease suppression in this plant. Strain PNA1 produced two phenazine antibiotics, phenazine-1-carboxylic acid and oxychlororaphin, in vitro. Its Tn5 mutants (FM29 and FM13), which were deficient in phenazine production, caused a reduction or loss of wilt disease suppression in vivo. Hence, phenazine production by PNA1 also contributed to the biocontrol of fusarium wilt diseases in pigeonpea and chickpea.Key words: biocontrol, fusarium wilts, phenazines, Pseudomonas.

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