First Report of<i>Fusarium solani</i>Causing Fusarium Wilt in Pima Cotton (<i>Gossypium barbadense</i>) in New Mexico, U.S.A.

Abdelraheem, A.; Sanogo, Soum; Wedegaertner, Tom; Nichols, Robert L.; Zhang, J. F.

doi:10.1094/pdis-05-19-1081-pdn

Cited by 7 publications

(4 citation statements)

References 3 publications

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“…The two pairs of FOV4‐specific primers (R4f/R4r and FovT‐F/FovA‐R) each amplified a single band with 208 and 500 bp, as expected, respectively, for each of the 17 isolates, whereas the non‐FOV4 isolate FW‐JF‐9B (FFCS) was negative (Zhu et al., 2019), with no band amplified (Figures 3 and 4). The results indicate that all the 17 isolates from the Fabens area of Texas were FOV4.…”

Section: Resultssupporting

confidence: 61%

Interactions between cotton genotypes and Fusarium wilt race 4 isolates from Texas and resistance evaluation in cotton

Abdelraheem

Wheeler²,

Dever³

et al. 2021

Crop Science

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Fusarium wilt, caused by the soil‐borne fungus Fusarium oxysporum f. sp. vasinfectum (FOV) race 4 (FOV4), is one of the most destructive diseases in cotton (Gossypium spp.) in the southwestern and western Cotton Belt. However, the virulence of FOV4 is currently unknown. In this study, 17 FOV isolates collected in the Fabens, TX, area were determined to be FOV4 based on FOV4‐specific polymerase chain reaction (PCR) and sequence analysis of three genes encoding for translation elongation factor, β‐tubulin, and phosphate permease. A further multiplex PCR analysis determined that they all belonged to the Tfo1/MULE MT genotype. Based on disease severity ratings (DSR) on two upland and two pima cotton lines in the greenhouse, virulence of the 17 FOV4 isolates differed but was overall congruent on the four lines, and differences among cotton genotypes accounted for 82% of the total variance. Variance in virulence due to FOV4 isolates and FOV4 isolate × cotton genotype interaction each accounted for only 8–11% of the total variance. A virulent MT FOV4 isolate was used to inoculate 104 entries representing 92 cultivars and elite lines in two tests at 21–23 °C. The combined ANOVA detected a significant genotypic variation in DSR with moderate broad‐sense heritability estimates (.62–.69). About 90–91% of the genotypes were susceptible to FOV4, including 100% mortality in 59–91% of the genotypes. Pima PHY 805 RF and three upland cultivars including FM 2334GLT, Acala 1517‐08, and Acala Daytona RF had similar resistance responses to the resistant check pima PHY 841 RF. This study demonstrated that cotton genotypes played a predominant role in determining FOV4 virulence, reinforcing the validity of using a representative isolate to screen cotton for FOV4 resistance.

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Section: Resultssupporting

confidence: 61%

Interactions between cotton genotypes and Fusarium wilt race 4 isolates from Texas and resistance evaluation in cotton

Abdelraheem

Wheeler²,

Dever³

et al. 2021

Crop Science

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“…The Fusarium wilt-nematode disease complex of cotton is a multifaceted pathogenicity system made up of many races/ genotypes of the FOV pathogen and numerous plant pathogenic nematodes. The apparent diversity of FOV is increasing with new genotypes of the pathogen being discovered and new species of Fusarium appearing to cause symptoms similar to Fusarium wilt (Guo et al, 2015;Zhu et al, 2019a;Zhu et al, 2019b). In China, a new genotype of FOV has been found to cause Fusarium wilt of cotton.…”

Section: Discussionmentioning

confidence: 99%

“…Additional Fusarium species (e.g. F. proliferatum and F. solani) have been also identified to engender wilt of cotton in New Mexico, producing symptoms of leaf yellowing and wilting as well as discolored vascular tissue (Zhu et al, 2019a;Zhu et al, 2019b). With the genetic variation that exists within this disease complex, more in-depth studies are needed to understand the relationships between these races/genotypes and how the disease may be managed.…”

Section: Discussionmentioning

confidence: 99%

Diversity and temporal distribution of Fusarium oxysporum f. sp. vasinfectum races and genotypes as influenced by Gossypium cultivar

Dyer

Newman²,

Lawrence³

2022

Front. Fungal Biol.

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This study assess the population diversity and temporal variability of caused by Fusarium oxysporum f. sp. vasinfectum (FOV) races/genotypes infecting cotton cultivars with either FOV or Meloidogyne incognita resistance. All plants sampled demonstrated typical symptoms of FOV including wilting, chlorosis and necrosis of the leaves, and discoloration of the vascular tissue in the stem. A diverse population of FOV was characterized. Eight races/genotypes of FOV were collected throughout the three site years. FOV race 1 was the most predominant in all tests (AUDPC=101.1); statistically higher numbers of isolates from LA-108 (AUDPC=59.9), race 8 (AUDPC=47.5), and race 2 (AUDPC=38.6) were also found compared to other races and genotypes collected. FOV race 1, race 2, race 8, and 108 were the most virulent races identified. The genotypes MDS-12, LA-110, and LA-127/140 were found in all tests but at a low incidence, and LA-112 was only found in trace amounts. MDS-12, LA-110, LA-112, and LA-127/140 produced less disease pressure. FOV race 4 which is highly virulent and present in California and Texas was not found in Alabama. A positive correlation was observed between the accumulation of growing degree days and FOV race 1, race 2, race 8, LA-108, and LA-110. Later symptom expression influenced by seasonal heat partially mitigates damage allowing cotton to produce bolls though they may be reduced in number and lint quality. Plant resistance to the FOV as expressed in these cultivars appears to provide better protection than M. incognita resistance. PhytoGen 72, which is resistant to FOV races/genotypes had low levels of FOV infection even though it sustained a high level of M. incognita root population density. The M. incognita resistant cultivars Deltapine 1558NR B2RF and PhytoGen 480 W3FE supported a lower nematode population density, however, FOV disease incidence was not reduced. FOV races/genotypes did not vary significantly between the nematode resistant and nematode susceptible cultivars.

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“…in the Bohai Bay, and the most abundant species was Fusarium solani [7,8]. Fusarium tend to exhibit high index of disease in many crops, such as cotton [9], soybeans [10], apple [7] and citrus [11]. Fusarium spp.…”

Section: Introductionmentioning

confidence: 99%

Involvement of MdWRKY40 in the Defense of Mycorrhizal Apple Against Fusarium Solani

Wang

Tang

et al. 2021

Preprint

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Background: Apple (Malus domestica Borkh.) is an important economic crop. The pathological effects of Fusarium spp., a group of soilborne pathogens, on the root systems of apple plants was unknown. It was unclear how mycorrhizal apple seedlings resist infection by F. solani. The transcriptional profiles of mycorrhizal and non-mycorrhizal plants infected by F. solani were compared using RNA-Seq.Results: Infection with F. solani significantly reduced the dry weight of apple roots, and the roots of mycorrhizal apple plants were less damaged when the plants were infected with F. solani. They also had enhanced activity of antioxidant enzymes and a reduction in the oxidation of membrane lipids. A total of 1,839 differentially expressed genes (DEGs) were obtained after mycorrhizal and non-mycorrhizal apple plants were infected with F. solani. A gene ontogeny (GO) analysis showed that most DEGs were involved in the binding of ADP and calcium ions. In addition, the enrichment observed from an analysis with the Kyoto Encyclopedia of Genes and Genomes (KEGG) primarily involved plant-pathogen interaction and Glycolysis/Gluconeogenesis, the mitogen-activated protein kinase (MAPK) signaling pathway, and plant hormone signal transduction. Based on a MapMan analysis, an enormous number of DEGs were involved in the response of mycorrhizal plants to stress. Among them, the overexpressed transcription factor MdWRKY40 significantly improved the resistance of ‘Orin’ to F. solani and the expression of the resistance gene MdGLU by binding the promoter of MdGLU.Conclusion: This paper outlines how the inoculation of apple seedlings by arbuscular mycorrhizal fungi reduces the response to stress at the transcription level of the root system following infection with F. solani, and MdWRKY40 played an important role in the resistance of mycorrhizal apple seedlings to infection with F. solani.

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First Report ofFusarium solaniCausing Fusarium Wilt in Pima Cotton (Gossypium barbadense) in New Mexico, U.S.A.

Cited by 7 publications

References 3 publications

Interactions between cotton genotypes and Fusarium wilt race 4 isolates from Texas and resistance evaluation in cotton

Interactions between cotton genotypes and Fusarium wilt race 4 isolates from Texas and resistance evaluation in cotton

Diversity and temporal distribution of Fusarium oxysporum f. sp. vasinfectum races and genotypes as influenced by Gossypium cultivar

Involvement of MdWRKY40 in the Defense of Mycorrhizal Apple Against Fusarium Solani

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