Towards consensus on the transfer of Fusarium oxysporum V5w2-enhanced tissue culture banana technology to farmers through public-private partnerships in East Africa

Ochieno, Dennis M.W.

doi:10.1016/j.sciaf.2020.e00605

Cited by 5 publications

(40 citation statements)

References 100 publications

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“…Pathogenic interactions are those that involve parasitic microbes that infect and reduce the performance of their hosts (Ochieno, 2020). Rhizobium symbioses exist within a situation of exploitation by various forms of parasites that can either be pathogenic or non-pathogenic (Brader et al, 2017).…”

Section: Pathogenic and Non-pathogenic Parasites Of Rhizobium Symbiosismentioning

confidence: 99%

“…However, non-pathogenic strains of the previously mentioned fungi with plant growth promoting effects have been isolated from leguminous root nodules of faba bean (Vicia faba) (Omar and Abd-Alla, 2000). While currently there is scarcity of published works on pathogenic endophytic fungi infection of leguminous root nodules, establishment of host range, and non-pathogenicity of some endophytic fungi remains a contentious subject (Ochieno, 2010(Ochieno, , 2020Avedi et al, 2014;Zarafi et al, 2015;Oula et al, 2020). Root endoparasitic nematodes are pathogenic microinvertebrates that exploit resources from rhizobium-legume symbioses (Taha, 1993;Weerasinghe et al, 2005).…”

Section: Pathogenic and Non-pathogenic Parasites Of Rhizobium Symbiosismentioning

confidence: 99%

“…Apart from resistance mechanisms, rhizobia may establish dense endophytic and rhizosphere populations that compete with host plants for nutrients, and hence interfering with food supply to aboveground consumers. Such a situation may occur in plants growing under nutrient-deficient conditions (Ochieno, 2010(Ochieno, , 2020, or when light energy for photosynthesis is not sufficient (Ballhorn et al, 2016).…”

Section: Decrease In Abundance Of Aboveground Consumersmentioning

confidence: 99%

“…However, this Green Revolution was characterized by excessive use of agrochemicals that polluted the environment besides being a threat to food security (van Emden and Peakall, 1996;Carson, 2002;Arora et al, 2020). The development of modern biotechnology industries and their marketing strategies (McCullum et al, 2003;Paarlberg, 2009), whose emphasis is perceived to require more focus on the importance of agroecological approaches (Herren et al, 2015;D'Annolfo et al, 2017), have brought up complex dimensions on the concept of Sustainable Food Systems (Zollitsch et al, 2007;Schütte et al, 2017;Ochieno, 2020). For instance, without adequate agroecological conceptualization, it may be a contentious matter to suggest that, destruction of leguminous biodiversity through herbicide-based weed management (Norsworthy et al, 2010;Corbeels et al, 2020), destroys nitrogen fixing and carbonfixing machinery that sustain life on earth (Khan et al, 2006;Druille et al, 2015).…”

Section: Future Prospectsmentioning

confidence: 99%

“…Resources need to be allocated toward research and innovation in microbial genetic resources (Sharma et al, 2018), so as to identify and develop competitive and efficient Rhizobium strains (Irisarri et al, 2019). This should follow guidelines that deliver endophytic plant growth promoting microbes and identifying non-beneficial ones for the bio-inoculant and biofertilizer industry (Avedi et al, 2014;Ochieno, 2020). This should be complemented with research on plant genetic resources to improve Rhizobiumlegume symbiosis with nutrient use efficiency.…”

Section: Future Prospectsmentioning

confidence: 99%

See 4 more Smart Citations

Rhizobium-Linked Nutritional and Phytochemical Changes Under Multitrophic Functional Contexts in Sustainable Food Systems

Ochieno

Karoney

Muge

et al. 2021

Front. Sustain. Food Syst.

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Rhizobia are bacteria that exhibit both endophytic and free-living lifestyles. Endophytic rhizobial strains are widely known to infect leguminous host plants, while some do infect non-legumes. Infection of leguminous roots often results in the formation of root nodules. Associations between rhizobia and host plants may result in beneficial or non-beneficial effects. Such effects are linked to various biochemical changes that have far-reaching implications on relationships between host plants and the dependent multitrophic biodiversity. This paper explores relationships that exist between rhizobia and various plant species. Emphasis is on nutritional and phytochemical changes that occur in rhizobial host plants, and how such changes affect diverse consumers at different trophic levels. The purpose of this paper is to bring into context various aspects of such interactions that could improve knowledge on the application of rhizobia in different fields. The relevance of rhizobia in sustainable food systems is addressed in context.

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Section: Pathogenic and Non-pathogenic Parasites Of Rhizobium Symbiosismentioning

confidence: 99%

Section: Pathogenic and Non-pathogenic Parasites Of Rhizobium Symbiosismentioning

confidence: 99%

Section: Decrease In Abundance Of Aboveground Consumersmentioning

confidence: 99%

Section: Future Prospectsmentioning

confidence: 99%

Section: Future Prospectsmentioning

confidence: 99%

See 3 more Smart Citations

Rhizobium-Linked Nutritional and Phytochemical Changes Under Multitrophic Functional Contexts in Sustainable Food Systems

Ochieno

Karoney

Muge

et al. 2021

Front. Sustain. Food Syst.

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Fusarium oxysporum and soil nutrient amendments provide short-term inhibition of Cosmopolites sordidus raising questions on biopesticide and plant nutrition potentials in tissue culture banana

Ochieno

2024

Scientific African

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Insecticides influence colonization and toxin accumulation by Aspergillus and Fusarium in orange and white maize flour varying in susceptibility to mycotoxigenic fungal pathogens

Ochieno

Nekesa

Naluyange

et al. 2023

Preprint

Self Cite

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Mycotoxigenic Aspergillus and Fusarium species that contaminate cereal crops with aflatoxins and fumonisins are a major threat to food security, human and animal health. Cases of mycotoxin contamination have been on the rise globally, with causes of such surges raising research interests. We conducted factorial experiments in the laboratory to test the hypothesis that some recently produced improved maize varieties that are not purposively bred for resistance to storage insect pests and mycotoxigenic fungi, require protection by synthetic insecticides, which in turn serve as nutrient sources to mycotoxigenic fungi, leading to invasive growth and enhanced toxin production by fungi, especially in conditions of high moisture. Flour from the improved white maize variety Western 505 that is not purposively bred for resistance to storage insect pests and mycotoxigenic fungi had the highest level of colonisation by A. flavus (6,633 CFU g-1) and Fusarium sp. (10,870 CFU g-1) with consequent elevated concentrations of aflatoxin (203 ppb) and fumonisin (2.23 ppm); while flour from the local yellow maize variety Spindi exhibited the least colonisation and mycotoxin production by A. flavus (4,133 CFU g-1) and Fusarium sp. (6,145 CFU g-1) with the local white Rachar being intermediate, at high moisture conditions. The synthetic insecticides Super Blue Cross (BC) and Actellic Super (AS) promoted growth and mycotoxin production by A. flavus and Fusarium sp.; while Ash promoted growth of A. flavus and Fusarium sp., but suppressed mycotoxin production by the two mycotoxigenic fungi (Aflatoxin and Fumonisin: control=114 ppb and 1.46 ppm; Ash=114 ppb and 1.46 ppm; AS=270 ppb and 2.31 ppm; BC=320 ppb and 3.55 ppm). It is concluded that flours from the local yellow Spindi and local white Rachar maize varieties are less susceptible to infection and mycotoxin contamination by A. flavus and Fusarium sp. compared to the improved white maize variety WH505, which accumulates higher levels of the mycotoxigenic fungi and their toxins, especially when treated with the synthetic insecticides Super Blue Cross and Actellic® Super that act as fungal nutrient sources under high moisture conditions. The implications of these findings are further discussed in the context of some relevant policies.

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Towards consensus on the transfer of Fusarium oxysporum V5w2-enhanced tissue culture banana technology to farmers through public-private partnerships in East Africa

Cited by 5 publications

References 100 publications

Rhizobium-Linked Nutritional and Phytochemical Changes Under Multitrophic Functional Contexts in Sustainable Food Systems

Rhizobium-Linked Nutritional and Phytochemical Changes Under Multitrophic Functional Contexts in Sustainable Food Systems

Fusarium oxysporum and soil nutrient amendments provide short-term inhibition of Cosmopolites sordidus raising questions on biopesticide and plant nutrition potentials in tissue culture banana

Insecticides influence colonization and toxin accumulation by Aspergillus and Fusarium in orange and white maize flour varying in susceptibility to mycotoxigenic fungal pathogens

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