First Report of <i>Fusarium oxysporum</i> Causing Fusarium Wilt on Blueberry (<i>Vaccinium corymbosum</i>) in Chile

Moya-Elizondo, Ernesto A.; Doussoulin, H.; Martin, J.; Ruiz, B.; Valle, Pedro del

doi:10.1094/pdis-02-19-0275-pdn

Cited by 11 publications

(5 citation statements)

References 3 publications

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“…En este estudio se identificaron hongos reportados como patógenos (F. oxysporum, B. cinerea y A. alternata) que provocan pérdidas considerables a los agricultores (Moya-Elizondo et al, 2019;Ramos-Bell et al, 2022;Wang et al, 2021). Phialemonium obovatum es un hongo saprótrofo oportunista (Gams y McGinnis, 1983) y P. fortinii es un hongo endófito septado oscuro con capacidad de mejorar la absorción de nutrientes como el calcio, fierro, aluminio y fósforo (Surono y Narisawa, 2021); siendo este último un potencial promotor de desarrollo vegetal, lo cual es corroborado con este estudio al aumentar la expresión de genes de respuesta a auxinas y citocininas mediante compuestos difusibles y volátiles en A. thaliana.…”

Section: Discussionunclassified

HONGOS RIZOSFÉRICOS AISLADOS DE ARÁNDANO Y SU EFECTO EN EL DESARROLLO DE Arabidopsis thaliana L.

García-Rueda,

Beltrán-Nambo,

Villegas-Moreno

et al. 2023

RevFitotecMex

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Los microorganismos presentes en su entorno influyen en el crecimiento de las plantas y pueden ser mutualistas, como los hongos formadores de micorrizas, o no mutualistas, como los hongos endófitos. En este estudio se aislaron especies fúngicas de la raíz y suelo rizosférico de arándano (Vaccinium corymbosum L.) cultivado en el estado de Michoacán, México con la finalidad de analizar su potencial como promotores de desarrollo vegetal. Seis cepas fúngicas fueron identificadas molecularmente mediante las regiones del espaciador transcrito interno (ITS) del ADN ribosomal. Se evaluó su capacidad de modificar el desarrollo de plántulas de Arabidopsis thaliana (Col 0) mediante dos configuraciones experimentales (cajas Petri compartimentadas y no compartimentadas), para investigar la influencia de compuestos difusibles y volátiles sobre el fenotipo de la planta. Phialocephala fortinii y Mortierella alpina promovieron el crecimiento de Arabidopsis thaliana, sobre todo en cajas compartimentadas, donde se observó un incremento de la longitud de raíz principal (≥ 2 cm) y en el número de raíces laterales (≥ 34), sugiriendo que los compuestos volátiles son los responsables de estos incrementos. Las especies promotoras de desarrollo vegetal seleccionadas se evaluaron mediante líneas reporteras ARR5::GUS y DR5::GUS para estimar la respuesta de genes a la acumulación de citocininas y auxinas en los tejidos vegetales. Los resultados indican que Phialocephala fortinii y Mortierella alpina actúan diferencialmente sobre el crecimiento de las plantas y representan un recurso biológico con gran potencial para su uso como bioestimulantes en la agricultura actual.

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Section: Discussionunclassified

HONGOS RIZOSFÉRICOS AISLADOS DE ARÁNDANO Y SU EFECTO EN EL DESARROLLO DE Arabidopsis thaliana L.

García-Rueda,

Beltrán-Nambo,

Villegas-Moreno

et al. 2023

RevFitotecMex

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“…The internal transcribed spacer (ITS) sequences of nuclear ribosomal DNA (rDNA) have been successfully used in resolving phylogenetic relationships of the fungi in the genera Fusarium (Lin et al, 2014) and Colletotrichum (Weir, Johnston & Damm, 2012). Combining with morphological characteristics, these fungi can be identified well to species level (Kvas et al, 2009;Lin et al, 2014;Rabha et al, 2016;Moya-Elizondo et al, 2019). In this work, the identification of F. fujikuroi and F. oxysporum along with a natural pathogen of I. cairica, C. gloeosporioides was performed with a combined method of molecular and morphological analyses.…”

Section: Fungal Identificationmentioning

confidence: 99%

Epiphytic fungi induced pathogen resistance of invasive plant Ipomoea cairica against Colletotrichum gloeosporioides

Hua

Zhu

et al. 2020

PeerJ

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Background Ipomoea cairica (L.) Sweet is a destructive invasive weed in South China but rarely infected with pathogens in nature. Its pathogen resistance mechanism is largely unknown at present. Some non-pathogenic isolates of Fusarium oxysporum and Fusarium fujikuroi are prevalent on many plant species and function as pathogen resistance inducers of host plants. The objective of the present research is to investigate whether the symbiosis between the both fungi and I. cairica is present, and thereby induces pathogen resistance of I. cairica. Methods Through field investigation, we explored the occurrence rates of F. oxysporum and F. fujikuroi on leaf surfaces of I. cairica plants in natural habitats and compared their abundance between healthy leaves and leaves infected with Colletotrichum gloeosporioides, a natural pathogen. With artificial inoculation, we assessed their pathogenicity to I. cairica and studied their contribution of pathogen resistance to I. cairica against C. gloeosporioides. Results We found that F. oxysporum and F. fujikuroi were widely epiphytic on healthy leaf surfaces of I. cairica in sunny non-saline, shady non-saline and sunny saline habitats. Their occurrence rates reached up to 100%. Moreover, we found that the abundance of F. oxysporum and F. fujikuroi on leaves infected with C. gloeosporioides were significantly lower than that of healthy leaves. With artificial inoculation, we empirically confirmed that F. oxysporum and F. fujikuroi were non-pathogenic to I. cairica. It was interesting that colonization by F. fujikuroi, F. oxysporum alone and a mixture of both fungi resulted in a reduction of C. gloeosporioides infection to I. cairica accompanied by lower lesion area to leaf surface area ratio, increased hydrogen peroxide (H2O2) concentration and salicylic acid (SA) level relative to the control. However, NPR1 expression, chitinase and β-1,3-glucanase activities as well as stem length and biomass of I. cairica plant only could be significantly improved by F. oxysporum and a mixture of both fungi but not by F. fujikuroi. In addition, as compared to colonization by F. oxysporum and a mixture of both fungi, F. fujikuroi induced significantly higher jasmonic acid (JA) level but significantly lower β-1,3-glucanase activity in leaves of I. cairica plants. Thus, our findings indicated the symbiosis of epiphytic fungiF. fujikuroi and F. oxysporum induced systemic resistance of I. cairica against C. gloeosporioides. F. oxysporum played a dominant role in inducing pathogen resistance of I. cairica. Its presence alleviated the antagonism of the JA signaling on SA-dependent β-1,3-glucanase activity and enabled I. cairica plants to maintain relatively higher level of resistance against C. gloeosporioides.

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“…(Lei et al, 2019), Stemphylium sp. (Flores and Medina, 2012) and Fusarium oxysporum (Moya-Elizondo et al, 2019) with the exception of the Aspergillus, Ulocladium and Trichoderma genera that do not cause disease in blueberry plants. On the contrary, these genera have antifungal activity against phytopathogens (XiaoXue et al, 2018).…”

Section: Alternariamentioning

confidence: 99%

Endophytic mycobiota associated to plants of Vaccinium corymbosum L. in Cañete valley- Perú

Ttacca¹,

Astete²,

Calderón

et al. 2022

RevFacAgron(LUZ)

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Endophytic fungi (EF) are microorganisms that live asymptomatically within plant tissues. They can confer benefits to the plant as inducers of resistance to pests and diseases, tolerance to abiotic factors, plant growth promoters and mycoparasites of pathogens. This study aimed to isolate, identify, and determine occurrence frequency of endophytic fungi in stems and leaves of blueberry plants collected from ten farms in Lima and Ica Region, Peru. Productive branches of 39 healthy plants were sampled. For the isolation of EF, 702 tissue sections were disinfected and transferred to Petri dishes with potato dextrose agar (PDA) medium, and reproductive structures were induced for identification. A total of 134 EF strains were isolated successfully. Nine genera were identified (Trichoderma, Aspergillus, Alternaria, Ulocladium, Cladosporium, Fusarium, Nigrospora, Lasiodiplodia and Stemphylium). EF occurrence frequency varied greatly between organs, being in leaves more frequent than the stems; likewise, the genera Alternaria and Cladosporium were the most frequent and with most colonized in plant tissues, while Aspergillus, Ulocladium and Lasiodiplodia were the least frequent. These strains could be useful to control plant diseases and, therefore, of great interest in sustainable agriculture.

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First Report of Fusarium oxysporum Causing Fusarium Wilt on Blueberry (Vaccinium corymbosum) in Chile

Cited by 11 publications

References 3 publications

HONGOS RIZOSFÉRICOS AISLADOS DE ARÁNDANO Y SU EFECTO EN EL DESARROLLO DE Arabidopsis thaliana L.

HONGOS RIZOSFÉRICOS AISLADOS DE ARÁNDANO Y SU EFECTO EN EL DESARROLLO DE Arabidopsis thaliana L.

Epiphytic fungi induced pathogen resistance of invasive plant Ipomoea cairica against Colletotrichum gloeosporioides

Endophytic mycobiota associated to plants of Vaccinium corymbosum L. in Cañete valley- Perú

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