<i>Fusarium</i> diversity associated with the <i> Sorghum-Striga</i> interaction in Ethiopia

Lombard, L.; Doorn, Rogier van; Groenewald, J.Z.; Tessema, Taye; Kuramae, E.E.; Etolo, D.W.; Raaijmakers, J.M.; Crous, Pedro W.

doi:10.3114/fuse.2022.10.08

Cited by 10 publications

(6 citation statements)

References 60 publications

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“…15 ), the FSAMSC now includes 41 described species ( Crous et al 2021 , Laraba et al . 2021 , Lombard et al . 2022 ), and almost half of the species in this complex have been reported from cereals ( Table 2 ).…”

Section: Resultsmentioning

confidence: 99%

Fusarium diversity associated with diseased cereals in China, with an updated phylogenomic assessment of the genus

Han

Wang

et al. 2023

Studies in Mycology

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Fusarium species are important cereal pathogens that cause severe production losses to major cereal crops such as maize, rice, and wheat. However, the causal agents of Fusarium diseases on cereals have not been well documented because of the difficulty in species identification and the debates surrounding generic and species concepts. In this study, we used a citizen science initiative to investigate diseased cereal crops (maize, rice, wheat) from 250 locations, covering the major cereal-growing regions in China. A total of 2 020 Fusarium strains were isolated from 315 diseased samples. Employing multi-locus phylogeny and morphological features, the above strains were identified to 43 species, including eight novel species that are described in this paper. A world checklist of cereal-associated Fusarium species is provided, with 39 and 52 new records updated for the world and China, respectively. Notably, 56 % of samples collected in this study were observed to have co-infections of more than one Fusarium species, and the detailed associations are discussed. Following Koch’s postulates, 18 species were first confirmed as pathogens of maize stalk rot in this study. Furthermore, a high-confidence species tree was constructed in this study based on 1 001 homologous loci of 228 assembled genomes (40 genomes were sequenced and provided in this study), which supported the “narrow” generic concept of Fusarium (= Gibberella). This study represents one of the most comprehensive surveys of cereal Fusarium diseases to date. It significantly improves our understanding of the global diversity and distribution of cereal-associated Fusarium species, as well as largely clarifies the phylogenetic relationships within the genus.

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Section: Resultsmentioning

confidence: 99%

Fusarium diversity associated with diseased cereals in China, with an updated phylogenomic assessment of the genus

Han

Wang

et al. 2023

Studies in Mycology

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“…The sequences generated in this research were analyzed with the NCBI's GenBank database through the BLAST-N program to determine the closest species and the species complexes to which they belong and then compared with reference sequences reported in the literature [16][17][18][19]24,39,44,[62][63][64][65][66][67][68][69] and downloaded from GenBank to establish the identity of the explored isolates. All the different regions of the sequences in this study and those downloaded from GenBank were aligned with the MAFFT v. 7 online server (http://mafft.cbrc.jp/alignment/server/index.html, accessed on 4 September 2023) [70] and then manually adjusted in MEGA v. 7 [71].…”

Section: Phylogenetic Analysesmentioning

confidence: 99%

Diversity and Pathogenicity of Fusarium Species Associated with Stalk and Crown Rot in Maize in Northern Italy

Sanna,

Martino,

Guarnaccia

et al. 2023

Plants

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The genus Fusarium includes several agronomically important and toxin-producing species that are distributed worldwide and can cause a wide range of diseases. Crown and stalk rot and grain infections are among the most severe symptoms that Fusarium spp. can cause in maize. Disease development usually occurs during germination, but it may also affect the later phases of plant growth. The purpose of this study was to investigate the diversity and pathogenicity of 41 isolates recovered from symptomatic seedlings collected in Northern Italy and seeds of five different geographical origins in 2019 and 2020. The pathogenicity was tested and confirmed in 23 isolates causing rotting in maize seedlings, with disease indexes from 20% to 90%. A multilocus phylogeny analysis based on four genomic loci (tef1-α, rpb2, calm and tub2) was performed on 23 representative isolates. Representative isolates were identified as species belonging to three species complexes (SC), including Fusarium verticillioides and F. annulatum in the F. fujikuroi SC. Fusarium commune was identified in the F. nisikadoi SC, and three different lineages were found in the Fusarium oxysporum SC. This study reports F. annulatum and two lineages of the Fusarium oxysporum SC as maize pathogens for the first time in Italy.

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“…This group is also associated with insects [96]. Several of these strains have the ability to control agricultural pests with high mortality rates of insect pests, exhibiting rapid action and abundant sporulation, making them ideal for use in microbial control [97]. Several species of the genus Fusarium are endophytes associated with Rosa (Rosaceae), many of which have not yet been identified at the species level [98].…”

Section: Discussionmentioning

confidence: 99%

Endophytic Capacity of Entomopathogenic Fungi in a Pasture Grass and Their Potential to Control the Spittlebug Mahanarva spectabilis (Hemiptera: Cercopidae)

Campagnani,

Auad,

Maurício

et al. 2024

Agronomy

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Pests in pastures have compromised the production of biomass for feeding livestock herds. Many strategies have been applied to sustainably solve this problem. One viable and innovative technique is the delivery of entomopathogenic fungi through endophytes. Therefore, this study aimed to (i) evaluate the endophytic capacity of two entomopathogenic fungi, Fusarium multiceps UFMGCB 11443 and Metarhizium anisopliae UFMGCB 11444, in Urochloa brizantha [(Hochst. ex A. Rich.) Stapf] (Poaceae) cultivar ‘Marundu’) via foliar inoculation or seed treatment, and (ii) measure their efficiency in controlling Mahanarva spectabilis Distant, 1909 (Hemiptera: Cercopidae) in U. brizantha. In the greenhouse, the fungi colonized the tissues of U. brizantha plants when inoculated via foliar spraying or seed treatment. The fungi F. multiceps and M. anisopliae caused 88% and 97.1% epizootic effects via seed inoculation, respectively, and 100% epizootic effects via foliar inoculation. In the field, the lowest fungal dose of 0.5 kg/ha had the same effect as a fourfold greater dose, with a >86% decrease in insect pest infestation observed. In summary, the fungi F. multiceps and M. anisopliae have endophytic effects and can effectively control M. spectabilis in U. brizantha pastures.

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Fusarium diversity associated with the Sorghum-Striga interaction in Ethiopia

Cited by 10 publications

References 60 publications

Fusarium diversity associated with diseased cereals in China, with an updated phylogenomic assessment of the genus

Fusarium diversity associated with diseased cereals in China, with an updated phylogenomic assessment of the genus

Diversity and Pathogenicity of Fusarium Species Associated with Stalk and Crown Rot in Maize in Northern Italy

Endophytic Capacity of Entomopathogenic Fungi in a Pasture Grass and Their Potential to Control the Spittlebug Mahanarva spectabilis (Hemiptera: Cercopidae)

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