Bacillus spp. en el crecimiento y rendimiento de Capsicum chinense Jacq.

Mejía-Bautista, Miguel Ángel; Cristóbal‐Alejo, Jairo; Pacheco-Aguilar, Juan Ramiro; Reyes-Ramírez, Arturo

doi:10.29312/remexca.v13i1.2664

Cited by 4 publications

(2 citation statements)

References 24 publications

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“…According to numerous reports of researchers, along with the dominant species F. oxysporum var. carcisi and F. solani, F. verticillioides, F. pallidoroseum [ 13 , 29 ], F. equiseti [ 9 , 32 ], F. proliferatum, and F. anthophilum [ 33 ] also participate in the development of Fusarium wilt.…”

Section: Introductionmentioning

confidence: 99%

Fusarium Species Causing Pepper Wilt in Russia: Molecular Identification and Pathogenicity

Engalycheva,

Kozar,

Frolova

et al. 2024

Microorganisms

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Fusarium wilt pathogens represent an ongoing threat to pepper production worldwide. This is the first report providing data on the molecular identification of Fusarium fungi that cause wilt in pepper in the southern regions of Russia. Monitoring of the Fusarium infection on pepper was carried out in 2019–2022 in two economically important regions of this culture production: the Krasnodar Krai and Crimea. Based on a phylogenetic analysis of the translation elongation factor (EF1a) and the internal transcribed spacer (ITS), as well as the macro- and micromorphological characteristics of the fungi, the causative agents of Fusarium wilt have been identified. The causative agents identified as representatives of the Fusarium species composition included: F. clavus, F. solani, F. oxysporum, F. verticillioides, F. commune, F. torulosum, and F. sporotrichioides. Depending on the region, the specifics of biodiversity and the ratio of these species in pathocomplexes were noted. In Crimea, wilting could be attributed to all of the identified species; in the Krasnodar Krai, F. verticillioides and F. clavus were found to contribute to wilting. The pathogenicity test showed that the pathogens of pepper wilting in Russia, in addition to the already known F. oxysporum and F. solani, are the species F. clavus and F. verticillioides. This is the first report on the ability of these species to cause Fusarium wilt in pepper cultures. The obtained data will be of practical value for the development of biological control measures for fungi of the genus Fusarium, which cause pepper wilt in areas of industrial production and seed production. In addition, data on species composition and aggressive isolates will be used in a pepper breeding program for resistance to Fusarium wilt.

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Section: Introductionmentioning

confidence: 99%

Fusarium Species Causing Pepper Wilt in Russia: Molecular Identification and Pathogenicity

Engalycheva,

Kozar,

Frolova

et al. 2024

Microorganisms

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“…plants through the inoculation of Bacillus sp. CKD061 and B. subtilis CBMT2, respectively43,44 . Likewise, the total fresh weight of C. annuum cv.…”

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confidence: 99%

Drought stress tolerance and growth promotion in chiltepin pepper (Capsicum annuum var. glabriusculum) by native Bacillus spp

Mendoza-Alatorre,

Infante-Ramírez,

González-Rangel

et al. 2023

Preprint

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Chiltepin is a semi-cultivated plant of high commercial value and represents a valuable genetic resource. However, several factors, such as drought, limit its production. Treatment with plant growth-promoting bacteria (PGPBs) is an alternative to mitigate drought stress. The present study aimed to evaluate the capacity of Bacillus spp, isolated from soils, to promote growth and induce tolerance to drought stress in chiltepin. A completely random design was established, and the Scott-Knott test was used (α = 0.05). The treated seeds improved germination parameters with increases of 46.42% in Germination Rate (GR), 22.56% in Mean Speed of Germination (MSG), 22.19% in Germination Speed Index (GSI), 65.16% in Vigor Index (VI), and 100.14% in Germination Index (GI). Furthermore, they reduced MGT (Mean Germination Time) by 5.63%. All isolates could solubilize phosphorus and zinc and produce ammonium, siderophores, and exopolysaccharides. Moreover, Bacillus spp. isolates showed resistance to drought at -1.75 MPa. Likewise, the treatments improved in vitro survival of stressed seedlings by 68%. Under greenhouse conditions, treated seedlings exhibited increases in root length (9.6%), stem diameter (13.68%), leaf fresh weight (69.87%), and chlorophyll a (38.15%). They also alleviated severe water stress symptoms and increased Relative Water Content (RWC) by 51%. Isolate Bc25-7 showed the highest potential for promoting growth, enduring water stress, and lessening the drought effect on chiltepin seedlings.

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Efecto de bioestimulantes microbianos en plántulas y frutos de chile jalapeño (Capsicum anuum L.) producidos en macrotúnel

Adame García,

Murillo Cuevas,

Fernández Viveros

et al. 2024

rbio

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El uso intensivo de fertilizantes químicos ha provocado problemas de contaminación ambiental y de salud pública. Una estrategia que garantiza la eficiencia del uso de nutrientes con tasas reducidas de fertilizantes sintéticos es el uso de bioestimulantes microbianos. El objetivo del trabajo fue evaluar el efecto de tres bioestimulantes microbianos sobre plántulas y frutos de chile jalapeño en condiciones protegidas de macrotúnel. Los tratamientos evaluados fueron: 1) Genifix®, 2) Trichoderma, 3) Bio-Terra® y 4) testigo. Para la evaluación en plántulas se pusieron a germinar 40 semillas por tratamiento. La variable de respuesta se tomó a los 29 días después de la siembra, la cual fue el peso seco de plántula y raíz. En la evaluación de frutos se utilizó un diseño en bloques completos al azar con cuatro repeticiones (bloques), en cada bloque se consideraron seis plantas de chile. Las variables de respuesta fueron peso, diámetro ecuatorial y polar de 20 frutos tomados al azar. También se consideró la producción del macrotúnel en peso del total de frutos por corte y por bloque. El producto Genifix® originó plántulas con mayor peso seco, con un incremento promedio del 39.9% en plántula y del 40.8% en raíz. Genifix® y Trichoderma tuvieron un efecto significativo en el peso y diámetro ecuatorial de los frutos. En producción, los bioestimulantes Genifix® y Trichoderma fueron los que presentaron los mejores resultados. El uso de los bioestimulantes evaluados es una opción para incrementar la calidad y producción del chile jalapeño con una fertilización mínima del cultivo.

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Bacillus spp. en el crecimiento y rendimiento de Capsicum chinense Jacq.

Cited by 4 publications

References 24 publications

Fusarium Species Causing Pepper Wilt in Russia: Molecular Identification and Pathogenicity

Fusarium Species Causing Pepper Wilt in Russia: Molecular Identification and Pathogenicity

Drought stress tolerance and growth promotion in chiltepin pepper (Capsicum annuum var. glabriusculum) by native Bacillus spp

Efecto de bioestimulantes microbianos en plántulas y frutos de chile jalapeño (Capsicum anuum L.) producidos en macrotúnel

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