First Report of Seedborne <i>Fusarium fujikuroi</i> and its Potential to Cause Pre- and Post-emergent Damping-off on Soybean (<i>Glycine max</i>) in the United States

Pedrozo, Rodrigo; Fenoglio, J. J.; Little, Christopher R.

doi:10.1094/pdis-03-15-0321-pdn

Cited by 16 publications

(10 citation statements)

References 4 publications

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“…Previous studies showed that only 33% of soybean seeds were infected by Fusarium species in Kansas [ 37 ]. Among nine Fusarium species found in soybean seeds, F. semitectum was the most frequent species in Kansas with the isolation frequency of 56.42% followed by F. proliferatum (19.25%) and F. verticillioides (13.20%), while F. equiseti (2.80%), F. fujikuroi (1.95%) and F. graminearum (0.33%) were isolated in low frequency among naturally infected seeds [ 25 , 40 , 41 ]. In our study, five Fusarium species were identified from intercropped soybean seeds, but they had different isolation frequency.…”

Section: Discussionmentioning

confidence: 99%

“…Seeds infected with pathogenic fungi can decrease seed germination and vigor, resulting in reduced seed quality [ 5 , 41 , 44 ]. In our study, five species of Fusarium genus significantly reduced the germination percentage of artificially-inoculated soybean seeds when compared with control, and F. asiaticum and F. fujikuroi had obvious negative effects on soybean seeds.…”

Section: Discussionmentioning

confidence: 99%

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Diversity of the Seedborne Fungi and Pathogenicity of Fusarium Species Associated with Intercropped Soybean

Chang

Naeem

et al. 2020

Pathogens

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Maize/soybean relay strip intercropping has been widely practiced in Southwest China due to its high productivity and effective application of agricultural resources; however, several seedborne diseases such as seedling blight, pod and seed decay are frequently observed causing severe yield loss and low seed quality. So far, the population and pathogenicity of the seedborne fungi associated with intercropped soybean remain unexplored. In this study, seeds of 12 soybean cultivars screened for intercropping were collected from three growing regions in Sichuan Province of Southwest China, and the seedborne fungi were isolated from the surface-sterilized seeds. Based on sequence analysis of ribosomal DNA internal transcribed spacer (rDNA ITS), 148 isolates were identified into 13 fungal genera, among which Fusarium covered 55.0% as the biggest population followed by Colletotrichum. Furthermore, Fusarium isolates were classified into five distinct species comprising F. fujikuroi, F. proliferatum, F. verticillioides, F. asiaticum and F. incarnatum through sequence analysis of translation elongation factor 1 alpha (EF-1α) and DNA-directed RNA ploymerase II second largest subunit (RPB2). Among them, F. fujikuroi accounted for 51.22% (42/82) and was isolated from 91.7% (11/12) soybean varieties. Pathogenicity assay showed that five Fusarium species were able to infect the seeds of soybean cultivar “Nandou12” and caused water-soaked or rot symptoms, while F. fujikuroi and F. asiaticum had much higher aggressiveness than other species with significant reductions of seed fresh weight and germination percentage. Accordingly, this study indicates that Fusarium species are the dominant seedborne fungi in the intercropped soybean in Sichuan, China, and this provides some useful references for the effective management of seedborne fungal diseases as well as soybean resistance breeding in maize/soybean relay strip intercropping.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Diversity of the Seedborne Fungi and Pathogenicity of Fusarium Species Associated with Intercropped Soybean

Chang

Naeem

et al. 2020

Pathogens

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“…), but Koch's postulates to prove F. fujikuroi pathogenicity of these hosts are still missing (8,11,12,13). F. fujikuroi has recently been reported to cause pre-and post-emergence dumping off on soybean, and it fulfilled Koch's postulates (14).…”

Section: Introductionmentioning

confidence: 99%

The puzzle of bakanae disease through interactions between Fusarium fujikuroi and rice

Spadaro¹

2017

Front Biosci

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Bakanae disease, one of the most noteworthy seedborne rice diseases, is caused by Fusarium fujikuroi, a member of the Gibberella fujikuroi species complex. The decreasing availability of chemical seed-dressing products over the last few years has raised the concerns of rice seed companies regarding bakanae disease. Therefore, new research trends require a deeper investigation into the main aspects of bakanae disease through interactions between rice and F. fujikuroi, in order to find new resistant or tolerant cultivars and alternative bakanae disease control strategies, as well as to develop more sensitive molecular diagnostic techniques. Here, some new aspects of F. fujikuroi epidemiology and pathogenicity, as well as its interactions with rice, are reported, and recent approaches applied to control bakanae disease are summarized.

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“…The present study and other previous studies indicated that F. fujikuroi is not primarily associated with rice as initially believed of which F. fujikuroi has been isolated from vanilla (Pinaria et al ., ), water grass (Carter et al ., ), wheat (Suga et al ., ) and has the potential to cause pre‐ and post‐emergent damping‐off on soybean (Pedrozo et al ., ). The present study also suggested that F. fujikuroi might undergo host shift to H. polyrhizus .…”

Section: Discussionmentioning

confidence: 97%

Fusarium fujikuroi associated with stem rot of red‐fleshed dragon fruit (Hylocereus polyrhizus) in Malaysia

Hawa

Faziha

Izham

et al. 2017

Annals of Applied Biology

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Stem rot was recorded as one of serious diseases of red-fleshed dragon fruit, (Hylocereus polyrhizus), in Malaysia. Fusarium fujikuroi was recovered from stem rot lesion of H. polyrhizus and the species was identified using TEF1sequence and mating study. From maximum likelihood phylogenetic tree using combined TEF1-and -tubulin sequences, the F. fujikuroi isolates from stem rot were grouped according to three geographical locations, namely Peninsular Malaysia, Sabah and Sarawak. Phylogenetic analysis indicated that F. fujikuroi isolates from stem rot of H. polyrhizus were clustered separately from F. fujikuroi isolates from rice because of intraspecific variation. From amplification of MAT allele-specific primers, 20% of the isolates carried MAT-1 allele while 80% carried MAT-2 allele. From isolates that carried MAT-1 allele, 65% crossed-fertile with MP-C (mating population of F. fujikuroi) tester strain while for MAT-2 allele, 56% crossed-fertile with MP-C. None of the isolates were identified as MP-D (mating population of F. proliferatum). Pathogenicity test conducted on 40 representative isolates showed that the stem rot symptoms were similar with the symptoms observed in the field, and can be categorized as low, moderate and high aggressiveness, which indicated variation in pathogenicity and virulence among the isolates. This study provides novel findings regarding Fusarium species associated with stem rot of H. polyrhizus and indicated that F. fujikuroi as a new causal pathogen of the disease.

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First Report of Seedborne Fusarium fujikuroi and its Potential to Cause Pre- and Post-emergent Damping-off on Soybean (Glycine max) in the United States

Cited by 16 publications

References 4 publications

Diversity of the Seedborne Fungi and Pathogenicity of Fusarium Species Associated with Intercropped Soybean

Diversity of the Seedborne Fungi and Pathogenicity of Fusarium Species Associated with Intercropped Soybean

The puzzle of bakanae disease through interactions between Fusarium fujikuroi and rice

Fusarium fujikuroi associated with stem rot of red‐fleshed dragon fruit (Hylocereus polyrhizus) in Malaysia

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