Biocontrol agent Fusarium oxysporum f.sp. strigae has no adverse effect on indigenous total fungal communities and specific AMF taxa in contrasting maize rhizospheres

This study aimed to disentangle the structure, composition, and co-occurrence relationships of the banana (cv. Dwarf Cavendish) root endophytome comparing two phenological plant stages: mother plants and suckers. Moreover, a collection of culturable root endophytes (>1000) was also generated from Canary Islands. In vitro antagonism assays against Fusarium oxysporum f.sp. cubense (Foc) races STR4 and TR4 enabled the identification and characterization of potential biocontrol agents (BCA). Eventually, three of them were selected and evaluated against Fusarium wilt of banana (FWB) together with the well-known BCA Pseudomonas simiae PICF7 under controlled conditions. Culturable and non-culturable (high-throughput sequencing) approaches provided concordant information and showed low microbial diversity within the banana root endosphere. Pseudomonas appeared as the dominant genus and seemed to play an important role in the banana root endophytic microbiome according to co-occurrence networks. Fungal communities were dominated by the genera Ophioceras, Cyphellophora, Plecosphaerella, and Fusarium. Overall, significant differences were found between mother plants and suckers, suggesting that the phenological stage determines the recruitment and organization of the endophytic microbiome. While selected native banana endophytes showed clear antagonism against Foc strains, their biocontrol performance against FWB did not improve the outcome observed for a non-indigenous reference BCA (strain PICF7).

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Characterization of Maize Genotypes (Zea mays L.) for Resistance to Striga asiatica and S. hermonthica and Compatibility with Fusarium oxysporum f. sp. strigae (FOS) in Tanzania

Agronomy ◽

10.3390/agronomy11051004 ◽

2021 ◽

Vol 11 (5) ◽

pp. 1004

Author(s):

John Lobulu ◽

Hussein Shimelis ◽

Mark D. Laing ◽

Arnold Angelo Mushongi ◽

Admire Isaac Tichafa Shayanowako

Keyword(s):

Grain Yield ◽

Fusarium Oxysporum ◽

Biocontrol Agent ◽

Zea Mays L ◽

Control Treatment ◽

Yield Reduction ◽

Maize Genotypes ◽

Significant Yield ◽

The Mean

Striga species cause significant yield loss in maize varying from 20 to 100%. The aim of the present study was to screen and identify maize genotypes with partial resistance to S. hermonthica (Sh) and S. asiatica (Sa) and compatible with Fusarium oxysporum f. sp. strigae (FOS), a biocontrol agent. Fifty-six maize genotypes were evaluated for resistance to Sh and Sa, and FOS compatibility. Results showed that FOS treatment significantly (p < 0.001) enhanced Striga management compared to the untreated control under both Sh and Sa infestations. The mean grain yield was reduced by 19.13% in FOS-untreated genotypes compared with a loss of 13.94% in the same genotypes treated with FOS under Sh infestation. Likewise, under Sa infestation, FOS-treated genotypes had a mean grain yield reduction of 18% while untreated genotypes had a mean loss of 21.4% compared to the control treatment. Overall, based on Striga emergence count, Striga host damage rating, grain yield and FOS compatibility, under Sh and Sa infestations, 23 maize genotypes carrying farmer preferred traits were identified. The genotypes are useful genetic materials in the development of Striga-resistant cultivars in Tanzania and related agro-ecologies.

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Effects of chloropicrin fumigation combined with biochar on soil bacterial and fungal communities and Fusarium oxysporum

Ecotoxicology and Environmental Safety ◽

10.1016/j.ecoenv.2021.112414 ◽

2021 ◽

Vol 220 ◽

pp. 112414

Author(s):

Jiahong Zhu ◽

Aocheng Cao ◽

Jiajia Wu ◽

Wensheng Fang ◽

Bin Huang ◽

...

Keyword(s):

Fusarium Oxysporum ◽

Fungal Communities ◽

Soil Bacterial

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Non-pathogenic Fusarium oxysporum as a biocontrol agent

Indian Phytopathology ◽

10.1007/s42360-020-00226-x ◽

2020 ◽

Vol 73 (2) ◽

pp. 177-183

Author(s):

A. Sajeena ◽

Deepthi S. Nair ◽

K. Sreepavan

Keyword(s):

Fusarium Oxysporum ◽

Biocontrol Agent

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Induction of Defense-Related Enzymes in Banana Plants: Effect of Live and Dead Pathogenic Strain of Fusarium oxysporum f. sp. cubense

ISRN Biotechnology ◽

10.5402/2013/601303 ◽

2013 ◽

Vol 2013 ◽

pp. 1-6 ◽

Cited By ~ 3

Author(s):

Janki N. Thakker ◽

Samiksha Patel ◽

Pinakin C. Dhandhukia

Keyword(s):

Enzyme Activity ◽

Fusarium Oxysporum ◽

Defense Response ◽

Biocontrol Agent ◽

Potential Candidate ◽

Marker Enzyme ◽

Panama Disease ◽

Disease Response ◽

Subsequent Exposure ◽

Plant Vaccine

The aim of the present study was to scrutinize the response of banana (Grand Naine variety) plants when interacting with dead or live pathogen, Fusarium oxysporum f.sp. cubense, a causative agent of Panama disease. Response of plants was evaluated in terms of induction of defense-related marker enzyme activity, namely, peroxidase (POX), polyphenol oxidase (PPO), -1,3 glucanase, chitinase, and phenolics. Plant's interaction with live pathogen resulted in early induction of defense to restrain penetration as well as antimicrobial productions. However, pathogen overcame the defense of plant and caused disease. Interaction with dead pathogen resulted in escalating defense response in plants. Later on plants inoculated with dead pathogen showed resistance to even forced inoculation of live pathogen. Results obtained in the present study suggest that dead pathogen was able to mount defense response in plants and provide resistance to Panama disease upon subsequent exposure. Therefore, preparation from dead pathogen could be a potential candidate as a biocontrol agent or plant vaccine to combat Panama disease.

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Mycoparasitic Trichoderma viride as a biocontrol agent against Fusarium oxysporum f. sp. adzuki and Pythium arrhenomanes and as a growth promoter of soybean

Crop Protection ◽

10.1016/j.cropro.2010.08.004 ◽

2010 ◽

Vol 29 (12) ◽

pp. 1452-1459 ◽

Cited By ~ 64

Author(s):

Rojan P. John ◽

R.D. Tyagi ◽

D. Prévost ◽

Satinder K. Brar ◽

Stéphan Pouleur ◽

...

Keyword(s):

Fusarium Oxysporum ◽

Biocontrol Agent ◽

Trichoderma Viride ◽

Growth Promoter ◽

Pythium Arrhenomanes

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Effect of biocontrol agent Bacillus amyloliquefaciens SN16-1 and plant pathogen Fusarium oxysporum on tomato rhizosphere bacterial community composition

Biological Control ◽

10.1016/j.biocontrol.2017.05.014 ◽

2017 ◽

Vol 112 ◽

pp. 1-9 ◽

Cited By ~ 12

Author(s):

Tingting Wan ◽

Huihui Zhao ◽

Wei Wang

Keyword(s):

Bacterial Community ◽

Fusarium Oxysporum ◽

Community Composition ◽

Plant Pathogen ◽

Bacillus Amyloliquefaciens ◽

Biocontrol Agent ◽

Bacterial Community Composition ◽

Rhizosphere Bacterial Community

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The communities of fungi occurring in the red clover (Trifolium pratense L.) and red clover with cocksfoot grass (Dactylis glomerata L.) cultivations on the lowland

Acta Mycologica ◽

10.5586/am.1979.005 ◽

2014 ◽

Vol 15 (1) ◽

pp. 61-73 ◽

Cited By ~ 1

Author(s):

Wanda Truszkowska ◽

Barbara Kalińska

Keyword(s):

Fusarium Oxysporum ◽

Trifolium Pratense ◽

Dactylis Glomerata ◽

Red Clover ◽

Pathogenic Fungi ◽

Fungal Communities ◽

Trifolium Pratense L ◽

Dactylis Glomerata L

Knowledge of fungal communities within cultures of clover planted into barley and clover with cocksfoot grass may be used to evaluate the antiphytopathogenic potential of the environment. Observation of the lack of common pathogenic fungi and the sensitivity of <i>Fusarium oxysporum</i> populations to agroecological conditions indicates the possibility of influencing the healthiness of the clover by agrotechnical methods.

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