scholarly journals Comparative Microbiome Analysis of a Fusarium Wilt Suppressive Soil and a Fusarium Wilt Conducive Soil From the Châteaurenard Region

2018 ◽  
Vol 9 ◽  
Author(s):  
Katarzyna Siegel-Hertz ◽  
Véronique Edel-Hermann ◽  
Emilie Chapelle ◽  
Sébastien Terrat ◽  
Jos M. Raaijmakers ◽  
...  
Keyword(s):  
Fusarium Wilt ◽  
Suppressive Soil ◽  
Microbiome Analysis ◽  
Conducive Soil

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

scholarly journals Microbial Communities Associated with Potato Common Scab-Suppressive Soil Determined by Pyrosequencing Analyses

Plant Disease ◽  
2012 ◽  
Vol 96 (5) ◽  
pp. 718-725 ◽  
Author(s):  
Noah Rosenzweig ◽  
James M. Tiedje ◽  
John F. Quensen ◽  
Qingxiao Meng ◽  
Jianjun J. Hao
Keyword(s):  
Microbial Communities ◽  
Common Scab ◽  
Disease Suppression ◽  
Rrna Gene ◽  
Suppressive Soil ◽  
Streptomyces Spp ◽  
Potato Common Scab ◽  
Order Of Magnitude ◽  
Disease Suppressive Soil ◽  
Conducive Soil

Potato common scab, caused by Streptomyces spp., is an annual production problem for potato growers, and not effectively controlled by current methods. A field with naturally occurring common scab suppression has been identified in Michigan, and confirmed to have a biological basis for this disease suppression. This field and an adjacent scab nursery conducive to disease were studied using pyrosequencing to compare the two microbial communities. Total DNA was extracted from both the disease-conducive and -suppressive soils. A phylogenetically taxon-informative region of the 16S rRNA gene was used to establish operational taxonomic units (OTUs) to characterize bacterial community richness and diversity. In total, 1,124 OTUs were detected and 565 OTUs (10% dissimilarity) were identified in disease-conducive soil and 859 in disease-suppressive soil, including 300 shared both between sites. Common phyla based on relative sequence abundance were Acidobacteria, Proteobacteria, and Firmicutes. Sequences of Lysobacter were found in significantly higher numbers in the disease-suppressive soil, as were sequences of group 4 and group 6 Acidobacteria. The relative abundance of sequences identified as the genus Bacillus was significantly higher by an order of magnitude in the disease-conducive 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

A Forest Soil Suppressive to Phytophthora cinnamomi and Conducive to Phytophthora cryptogea. I. Survival, Germination and Infectivity of Mycelium and Chlamydospores.

1982 ◽  
Vol 30 (1) ◽  
pp. 11 ◽  
Author(s):  
DM Halsall
Keyword(s):  
Forest Soil ◽  
Recovery Rate ◽  
Phytophthora Cinnamomi ◽  
Field Trials ◽  
Chemical Characteristics ◽  
Subsequent Recovery ◽  
Suppressive Soil ◽  
Phytophthora Cryptogea ◽  
Physical And Chemical ◽  
Conducive Soil

The physical and chemical characteristics of a forest soil suppressive to P. cinnamomi are compared with those of other, previously described, suppressive soils. Recovery of P. cinnamomi chlamydospores from the suppressive soil was reduced to 51% of recovery from condilcive soil when the chlamydospores were mixed through the soil immediately prior to sampling. The subsequent recovery rate decreased more rapidly in the suppressive soil than in the conducive soil. Germination of chlamydospores by the formation of a terminal sporangium and zoospores was inhibited in the suppressive soil. Degeneration of mycelium was more rapid in the suppressive than in the conducive soil. Glasshouse tests showed infection of seedlings growing in the suppressive soil could occur when a zoospore inoculum was used. Infection was greatly reduced when a chlamydospore inoculum was used. Field trials in Tallaganda State Forest, N.S.W., indicated that P. cinnamomi introduced into this habitat rarely caused infection and was unlikely to spread.

scholarly journals Microbial and biochemical basis of a Fusarium wilt-suppressive soil

2015 ◽  
Vol 10 (1) ◽  
pp. 119-129 ◽  
Author(s):  
Jae-Yul Cha ◽  
Sangjo Han ◽  
Hee-Jeon Hong ◽  
Hyunji Cho ◽  
Daran Kim ◽  
...  
Keyword(s):  
Fusarium Wilt ◽  
Biochemical Basis ◽  
Suppressive Soil

scholarly journals Chemical characters of disease suppressive and conducive soil of Moler on shallot in Brebes Central Java

2021 ◽  
Vol 905 (1) ◽  
pp. 012057
Author(s):  
S H Poromarto ◽  
Supyani ◽  
Supriyadi ◽  
Hadiwiyono
Keyword(s):  
Cation Exchange Capacity ◽  
Exchange Capacity ◽  
Organic P ◽  
Suppressive Soil ◽  
Central Java ◽  
Organic Mineral ◽  
Chemical Soil ◽  
Chemical Character ◽  
Chemical Characters ◽  
Conducive Soil

Abstract In the latest years, a disease epidemy of Moler caused by Fusarium oxysporum f.sp. cepae have just occurred in Brebes Central Java. The disease intensity, however, varies between the shallot production lands. Some lands show suppressive with disease intensity lower than 5%, and others are conducive to disease intensity over 50%. It is interesting that in Brebes occur suppressive and conducive soil to moler disease. The suppressiveness may be determined by environmental conditions, including chemical soil characters. This paper reports the chemical character of suppressive and conducive soil to moler disease in Brebes. The evidence shows that the suppressive soil is more fertile than that conducive one. The suppressive soil is chemically characterized by significantly higher organic mineral, C-organic, P-available, K-exchangeable, and Cation Exchange Capacity than that conducive one.

Interactions among Gaeumannomyces graminis var. tritici, Trichoderma koningii, and soil bacteria

1988 ◽  
Vol 34 (7) ◽  
pp. 871-876 ◽  
Author(s):  
A. Simon ◽  
K. Sivasithamparam
Keyword(s):  
Pure Culture ◽  
Soil Bacteria ◽  
Gaeumannomyces Graminis ◽  
Suppressive Soil ◽  
Trichoderma Koningii ◽  
Gaeumannomyces Graminis Var Tritici ◽  
Conducive Soil

Interactions among Gaeumannomyces graminis var. tritici, Trichoderma koningii, and soil bacteria were studied in vitro and in soils suppressive and conducive of the saprophytic growth of G. graminis var. tritici. Fifty-four percent of bacteria isolated from the suppressive soil and 10% from the conducive soil were antagonistic to G. graminis var. tritici in vitro. The reduction in the growth of T. koningii in vitro by metabolite(s) produced in pure culture by soil bacteria was 14 and 28% for the bacteria isolated from the suppressive and conducive soil, respectively. Metabolite(s) produced by T. koningii in pure culture inhibited the growth in vitro of 8 and 65% of the bacteria isolated from the suppressive and conducive soils, respectively. All isolates of Trichoderma tested produced metabolite(s) that inhibited growth of G. graminis var. tritici in pure culture. The metabolite(s) produced by one isolate of T. koningii inhibited growth of all isolates of Trichoderma in vitro. Trichoderma koningii suppressed saprophytic growth of G. graminis var. tritici in irradiated conducive soil in the absence but not in the presence of bacteria isolated from the same soil. The results suggest that the suppressive soil may be more suppressive of the saprophytic growth of G. graminis var. tritici and less suppressive of the growth of T. koningii than the conducive soil.

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