Post-harvest contamination of maize by Fusarium verticillioides and fumonisins linked to traditional harvest and post-harvest practices: A case study of small-holder farms in Vietnam

Tran, Trang Minh; Ameye, Maarten; Phan, Lien Thi-Kim; Devlieghere, Frank; Saeger, Sarah De; Eeckhout, Mia; Audenaert, Kris

doi:10.1016/j.ijfoodmicro.2020.109022

Cited by 19 publications

(12 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Hybrid lines of CP888 and Bt/GT NK7328 are predominant in the Vietnamese smallholder maize farms. Our previous reports have shown that the higher contamination of both maize fields and post-harvest maize by fumonisins was observed in hybrid line CP888 when comparing to line Bt/GT NK7328 [ 4 , 13 ]. This spurred the question whether line CP888 was more susceptible to F. verticillioides .…”

Section: Discussionmentioning

confidence: 99%

“…In Vietnam, F. verticillioides has been frequently discovered in the central highlands’ maize fields between 2017 and 2019 [ 4 ]. In particular, contamination of maize with fumonisins from the field to the postharvest chain was documented in this agro-ecological zone [ 4 , 13 ]. An evaluation of virulence variability of the local F. verticillioides population is needed as a first step in developing locally adapted resistant cultivars.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Molecular Insights into Defense Responses of Vietnamese Maize Varieties to Fusarium verticillioides Isolates

Tran

Ameye

Landschoot

et al. 2021

JoF

Self Cite

View full text Add to dashboard Cite

Fusarium ear rot (FER) caused by Fusarium verticillioides is one of the main fungal diseases in maize worldwide. To develop a pathogen-tailored FER resistant maize line for local implementation, insights into the virulence variability of a residing F. verticillioides population are crucial for developing customized maize varieties, but remain unexplored. Moreover, little information is currently available on the involvement of the archetypal defense pathways in the F. verticillioides–maize interaction using local isolates and germplasm, respectively. Therefore, this study aims to fill these knowledge gaps. We used a collection of 12 F. verticillioides isolates randomly gathered from diseased maize fields in the Vietnamese central highlands. To assess the plant’s defense responses against the pathogens, two of the most important maize hybrid genotypes grown in this agro-ecological zone, lines CP888 and Bt/GT NK7328, were used. Based on two assays, a germination and an in-planta assay, we found that line CP888 was more susceptible to the F. verticillioides isolates when compared to line Bt/GT NK7328. Using the most aggressive isolate, we monitored disease severity and gene expression profiles related to biosynthesis pathways of salicylic acid (SA), jasmonic acid (JA), abscisic acid (ABA), benzoxazinoids (BXs), and pathogenesis-related proteins (PRs). As a result, a stronger induction of SA, JA, ABA, BXs, and PRs synthesizing genes might be linked to the higher resistance of line Bt/GT NK7328 compared to the susceptible line CP888. All these findings could supply valuable knowledge in the selection of suitable FER resistant lines against the local F. verticllioides population and in the development of new FER resistant germplasms.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Molecular Insights into Defense Responses of Vietnamese Maize Varieties to Fusarium verticillioides Isolates

Tran

Ameye

Landschoot

et al. 2021

JoF

Self Cite

View full text Add to dashboard Cite

show abstract

“…The interview focused on the pre-harvest activities as a choice of variety, the approach to prepare soils, the fertilizer used, and the approach to managing crop residues. Post-harvest practices included means to transport paddy from field to factory, delayed drying time (calculated from harvesting to drying), and drying conditions (temperature and time drying), which were reported to be related to the occurrence of fungi on agricultural products [ 13 , 14 , 16 ]. Additionally, to obtain additional objective evidence, registration forms and documents related to rice production were checked by the investigators during the interview.…”

Section: Methodsmentioning

confidence: 99%

“…In addition to conducive environmental conditions, a relationship between agricultural practices and fungi contamination in rice with regard to the reduction of fungi in the rice chain has been reported by Goncalves et al (2019) [ 10 ]. Vietnamese traditional pre-and post-harvest practices have been demonstrated to be associated with the increased contamination of maize with mycotoxins and Fusarium verticillioides in Vietnam [ 13 , 14 ] (e.g., crop residue management, selection of cereal variety, transport, etc.). However, as far as we know, no studies addressed the relationship between seasons, regions, and agricultural practices and contamination of A. flavus and F. proliferatum in the Mekong Delta rice chain in Vietnam.…”

Section: Introductionmentioning

confidence: 99%

Contamination of Fusarium proliferatum and Aspergillus flavus in the Rice Chain Linked to Crop Seasons, Cultivation Regions, and Traditional Agricultural Practices in Mekong Delta, Vietnam

Phan

Tran

Audenaert

et al. 2021

Foods

Self Cite

View full text Add to dashboard Cite

This study evaluates the influence of crop seasons, cultivation regions, and traditional agricultural practices on the occurrence of F. proliferatum and A. flavus in the rice chain in the Mekong Delta, Vietnam. A survey on pre- and post-harvest practices was performed from 2017 to 2019 in parallel with sampling. Results showed that F. proliferatum (36.3%) and A. flavus (10%) were predominantly present throughout the rice chain. These fungi frequently occurred in winter–spring and autumn–winter crops in Can Tho paddy. Especially, F. proliferatum appeared both on the field and during transportation (50–100%), while A. flavus presented at all stages (10–33%). The occurrence of F. proliferatum reduced 70–27% after drying, depended on the seasons, compared to field and transportation stages and could not be detected anymore at further stages. Applying poor pre-harvest agricultural practices such as the use of certain varieties (Jasmine, DT8 varieties), combination of fertilizers (organic–inorganic), fields with crop debris, unhygienic boats, and delayed drying time of 8–12 h or 12–28 h resulted in an increase in fungal contamination on paddy. This study provides a detailed description of fungi contamination in crop seasons, cultivation regions, and agricultural practices, which may help in understanding the fungal dynamic and allow identification of good agricultural practices to mitigate the fungal contamination and potential mycotoxin production.

show abstract

“…The release of mycotoxins by the producing fungi is caused by several factors, which can be divided into two groups, those that influence the production of mycotoxins in the stage of cultivation and harvest and those related to the postharvest period (Tran et al, 2020). In the stage of cultivation is where fungi are inserted in food, however, their growth depends on specific conditions, and the main fungi that attack grains, cereals, and oilseeds are considered fungi of the field, which act in high water activity, being the species of Fusarium graminearium and Aspergillus flavus representing these groups.…”

Section: Grain Storage Conditions and Association With Mycotoxin Productionmentioning

confidence: 99%

Influence of grains postharvest conditions on mycotoxins occurrence in milk and dairy products

et al. 2022

View full text Add to dashboard Cite

Mycotoxins are secondary metabolites produced by some filamentous fungi, which can cause toxic effects in humans and animals. The purpose of the study was to report the influence of postharvest conditions of grains and animal feed on the occurrence of mycotoxins in milk and dairy products which are widely consumed worldwide and have several health benefits for consumers. Among the most toxic mycotoxins are aflatoxins (AFs), with AFB 1 being the most toxic and present in grains and cereals used in the feeding of dairy cows. After ingestion, AFB 1 is converted to AFM 1 , which is excreted in milk, being a source of direct contamination to consumers of this product and dairy products. Thus, knowledge about this substance and the care that can be taken to reduce the consumption of contaminated food is a matter of great importance concerning public health and food safety. This review reports that the temperature and humidity at which the grains are stored, are the main conditions that can be controlled during storage, aiming to reduce the growth of fungi and the production of mycotoxins. This work reinforces that the continuous control of mycotoxins in milk and dairy products is of vital importance to obtain a safe product. Besides, strategies to mitigate the development of fungal contamination have been carefully revised to prevent the formation of these toxic substances.

show abstract

Post-harvest contamination of maize by Fusarium verticillioides and fumonisins linked to traditional harvest and post-harvest practices: A case study of small-holder farms in Vietnam

Cited by 19 publications

References 21 publications

Molecular Insights into Defense Responses of Vietnamese Maize Varieties to Fusarium verticillioides Isolates

Molecular Insights into Defense Responses of Vietnamese Maize Varieties to Fusarium verticillioides Isolates

Contamination of Fusarium proliferatum and Aspergillus flavus in the Rice Chain Linked to Crop Seasons, Cultivation Regions, and Traditional Agricultural Practices in Mekong Delta, Vietnam

Influence of grains postharvest conditions on mycotoxins occurrence in milk and dairy products

Contact Info

Product

Resources

About