Impacts of soil abiotic attributes on Fusarium wilt, focusing on bananas

Orr, Ryan; Nelson, Paul N.

doi:10.1016/j.apsoil.2018.06.019

Cited by 93 publications

(72 citation statements)

References 166 publications

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“…). N supply and form generally affect lettuce plant defence and FOL pathogenicity (Orr and Nelson ). Nevertheless, little information are available regarding the impact of BCAs and compost may have on ammonia‐oxidizing bacteria or on the Archaea that harbour the amoA gene (AOB and AOA) (Musyoki et al .…”

Section: Introductionmentioning

confidence: 99%

“…A critical component of the microbially driven N cycle is the nitrification process, encoded by amoA as key genes that control the availability of soil nitrates (Nicol et al 2008;Zhang et al 2013). N supply and form generally affect lettuce plant defence and FOL pathogenicity (Orr and Nelson 2018). Nevertheless, little information are available regarding the impact of BCAs and compost may have on ammonia-oxidizing bacteria or on the Archaea that harbour the amoA gene (AOB and AOA) (Musyoki et al 2015;Zimmermann et al 2016), and in consequence on the soil N form which may further control FOL repression.…”

Section: Introductionmentioning

confidence: 99%

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Influence of different biological control agents and compost on total and nitrification-driven microbial communities at rhizosphere and soil level in a lettuce -Fusarium oxysporumf. sp.lactucaepathosystem

et al. 2019

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Aims The response of rhizosphere and bulk soil indigenous microbial communities focusing on nitrifiers was evaluated after the application of different biological control agents (BCAs; Bacillus, Trichoderma, Pseudomonas) and compost in controlling lettuce Fusarium wilt. Methods and Results Experiments were conducted ‘in situ’ over two lettuce cropping seasons. Total fungal, bacterial and archaeal populations and the nitrifiers were analysed using quantitative polymerase chain reaction method. The pathogen, Fusarium oxysporum forma specialis lactucae (FOL), Bacillus, Trichoderma and Pseudomonas and three antifungal genes (chiA, 2,4‐diacetylphloroglucinol ‐ phlD and HCN synthase ‐ hcnAB genes) were also assessed. Quantitative data were corroborated with disease severity (DS), potential nitrification activity and soil chemical parameters. The application of BCAs and compost resulted in the disease reduction by as much as 69%, confirmed by significant negative correlations between Bacillus subtilis, Trichoderma and Pseudomonas sp. abundances and DS. The FOL presence in the untreated control resulted in the nitrifiers niche differentiation. Conclusions The used treatments were efficient against Fusarium wilt and did not influence negatively the nontarget microbial communities. Significance and Impact of the Study The use of BCAs and compost appears as an effective and safe strategy to implement sustainable agricultural practices.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of different biological control agents and compost on total and nitrification-driven microbial communities at rhizosphere and soil level in a lettuce -Fusarium oxysporumf. sp.lactucaepathosystem

et al. 2019

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“…Plant disease severity is related to soil biotic and abiotic elements, which influence the host and pathogen. Therefore, soil temperature, redox potential, pH and nutrient contents might positively or negatively contribute to suppress Fusarium wilt and also reduce the availability of some micronutrients (Orr and Nelson 2018). Our current study showed that T. asperellum B1902 is an effective method to control F. oxysporum f. sp.…”

Section: Discussionmentioning

confidence: 69%

Biocontrol efficacy of Trichoderma asperellum ‐enriched coconut fibre against Fusarium wilts of cherry tomato

Hasan

Zainudin

Aris

et al. 2020

J. Appl. Microbiol.

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Aims Agro‐based wastes were evaluated as a medium for mass micropropagule production and optimal efficacy of Trichoderma asperellum B1092 in controlling Fusarium oxysporum f. sp. lycopersici and promoting tomato growth. This study focused on biological control because pathogen persistence in the soil makes the disease difficult to control. Methods and Results Rice bran, biochar, empty fruit bunches, coconut fibres, compost, top soil and mixed soil were evaluated as media for mass multiplication of T. asperellum, which is effective in controlling plant pathogens. Yielding the most colony forming units (CFU) among the media, coconut fibre was deemed most suitable for promoting sporulation. After 120 days on the medium, T. asperellum B1902 produced 9·053 × 105 CFU per gram coconut fibre; oil palm empty fruit bunches was second highest (7·406 × 105 CFU per gram). In field tests of T. asperellum B1092 against F. oxysporum f. sp lycopersici (causing Fusarium wilt of cherry tomato), B1092 significantly promoted plant growth compared to the control. The efficacy of this formulation resulted in increased growth of roots and shoots tomato plants and total lycopene, sugar, K, N, Ca, P and Mg content after 120 days. Conclusions Trichoderma asperellum B1092 showed great field potential for improving productivity and quality of tomatoes and in controlling Fusarium wilt of cherry tomato. Significance and Impact of the Study This innovative approach using a cheap agro‐waste to control the persistent soil‐borne Fusarium pathogen of cherry tomato should increase soil survival rate of Trichoderma and has potential for upscaling in the field for other crops.

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“…In the greenhouse, attempting to water a variety of soil types evenly while maintaining adequate conditions for germination and seedling growth in all pots could have resulted in higher than optimal water content in poorer‐draining soils. Both organic matter and Mn have been shown to promote disease by either contributing to excessively moist conditions (Libohova et al, 2018; You et al, 2018) or by increasing virulence of pathogens under moist conditions (Falcon et al, 1984; Hasannejad et al, 2006; Orr and Nelson, 2018) and could have caused seed rot or failure of seedlings to emerge from the soil after germination. However, both organic matter and Mn are likely to be beneficial to plant growth in the native, drier environment of E. crosbyae (Marschner, 2011; Barker and Pilbeam, 2015).…”

Section: Discussionmentioning

confidence: 99%

How specialized is a soil specialist? Early life history responses of a rare Eriogonum to site‐level variation in volcanic soils

McClinton

Torrence

Verburg

et al. 2020

American J of Botany

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PREMISE Understanding edaphic specialization is crucial for conserving rare plants that may need relocation due to habitat loss. Focusing on Eriogonum crosbyae, a rare soil specialist in the Great Basin of the United States, we asked how site‐level variation among volcanic soil outcrops affected plant growth and population distribution. METHODS We measured emergence, survival, size, and biomass allocation of E. crosbyae seedlings planted in soils collected from 42 outcrops of actual and potential habitat. We also measured phenotypic variation in the wild, documented abiotic and biotic components of E. crosbyae habitat, re‐surveyed Nevada populations, and evaluated occupancy changes over time. RESULTS Plants responded plastically to edaphic variation, growing larger and allocating relatively more to aboveground tissues in soils with greater nutrient availability and growing smaller in soils higher in copper in the field and the greenhouse. However, the chemical and physical soil properties we measured did not predict site occupancy, nor was plant phenotype in the greenhouse different when plants were grown in soils from sites with different occupation status. We observed occupation status reversals at five locations. CONCLUSIONS Eriogonum crosbyae performed well in soils formed on hydrothermally altered rocks that are inhospitable to many other plants. Extirpation/colonization events observed were consistent with metapopulation dynamics, which may partially explain the patchy distribution of E. crosbyae among outcrops of potential habitat. While soil properties did not predict site occupancy, early life stages showed sensitivity to soil variation, indicating that seedling dynamics may be important to consider for the conservation of this soil specialist.

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Impacts of soil abiotic attributes on Fusarium wilt, focusing on bananas

Cited by 93 publications

References 166 publications

Influence of different biological control agents and compost on total and nitrification-driven microbial communities at rhizosphere and soil level in a lettuce -Fusarium oxysporumf. sp.lactucaepathosystem

Influence of different biological control agents and compost on total and nitrification-driven microbial communities at rhizosphere and soil level in a lettuce -Fusarium oxysporumf. sp.lactucaepathosystem

Biocontrol efficacy of Trichoderma asperellum ‐enriched coconut fibre against Fusarium wilts of cherry tomato

How specialized is a soil specialist? Early life history responses of a rare Eriogonum to site‐level variation in volcanic soils

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