TIZÓN SUIZO (Phaeocryptopus gaeumannii (Rhode) Petrak) EN Pseudotsuga menziessi var. glauca (Beissn.) Mayr

Tovar, David Cibrián; Pérez-Vera, Omar Alejandro; Díaz, Silvia Edith García; Llanderal, Víctor David Cibrián; Juárez, Juan Cruz; Acevedo, Gabriela Hernández

doi:10.29298/rmcf.v5i22.353

Cited by 2 publications

(1 citation statement)

References 13 publications

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“…La superficie de estos bosques en el centro del país se obtuvo de Villagómez y Bello (2018) para el estado de Guanajuato; Domínguez et al (2004) en Querétaro; y Ventura-Ríos et al (2010) para Hidalgo, Puebla y Tlaxcala. Así mismo se incorporaron las coordenadas geográficas reportadas en diversos estudios de investigación realizados (Villanueva et al, 2020b;Vargas-Hernández et al, 2003;Reyes et al, 2005;Cano et al, 2007;Cruz et al, 2014;Domínguez-Calleros et al, 2014;Cibrián et al, 2018;González, 2019).…”

Section: Materiales Y Métodos Distribución Y Superficieunclassified

Distribución de los bosques de Pseudotsuga menziesii (Mirb.) Franco en México

Molina-Marchan,

Narváez-Flores,

Mojica-Guerrero

2024

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Pseudotsuga menziesii is a boreal species that is naturally distributed in North America. In Mexico it is listedin NOM-059-SEMARNAT-2010 in the category "subject to special protection", its populations are small anddiscontinuous, and its areas are considered of High Conservation Value. To determine its distribution andsurface area, we processed the Land Use and Vegetation Charts Series VI scale 1:250000 (nationalcontinuum), and that of the state of Chihuahua scale 1:50000 and considered maps and geographiccoordinates reported in various research works. In addition, information was obtained on the environmentalconditions where Pseudotsuga menziesii thrives; the results show that this species is distributed in 14 Stateswith approximately 57,000 ha and 98.5% of its populations are concentrated in the northern states ofChihuahua, Coahuila, Durango and Nuevo León; its communities develop in the high parts of the SierraMadre Oriental, Sierra Madre Occidental and Eje Neovolcanico in cold and humid climates with altitudesthat fluctuate from 2,200 to 3,400 m; it coexists mainly with species of the genus Pinus, Quercus, Abies,Populus, Picea, Arbutus and Cupressus; and its populations are being affected by natural and anthropogenicfactors. This study will allow a better management of these forests.

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Section: Materiales Y Métodos Distribución Y Superficieunclassified

Distribución de los bosques de Pseudotsuga menziesii (Mirb.) Franco en México

Molina-Marchan,

Narváez-Flores,

Mojica-Guerrero

2024

e-cucba

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Analysis of Swiss needle cast disease onPseudotsuga menziesiivar.glaucawithin a Christmas tree plantation in Mexico

et al. 2020

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Nothophaeocryptopus gaeumannii causes Swiss needle cast disease in Douglas‐fir forest trees and ornamental plantations. This study analysed disease and pathogen behaviour from summer 2011 to spring 2012. An untreated plot within a Pseudotsuga menziesii var. glauca plantation in Valle de Bravo, Mexico was divided into 12 sub‐plots. At each sampling date, needles were collected from four trees per sub‐plot. The analysis included seven needle age cohorts from branches from two canopy sections, as well as fallen needles from five random trees inside the entire plot. Airborne ascospores were collected weekly in slide traps. Sequencing identified the pathogen from DNA extracted from 18 mycelial colonies (isolates) and ascospores DNA from four selective slide traps. Disease and pathogen characteristics were mostly similar to other reports, except for ascospores inside pseudothecia on the youngest age class of foliage. Defoliation affected lower canopies frequently, while in the middle canopy it ranged from 6% to 98% depending on the needle age. In fallen needles, mature pseudothecia contained ascospores and isolated colonies developed in an agar‐based medium. Ascospore fluctuation peaked in two periods, but the most relevant occurred from 11 February to 17 March 2012, coinciding with bud break. These results contribute further understanding of SNC disease useful in improving the health of Christmas trees and the less‐studied P. menziesii var. glauca.

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TIZÓN SUIZO (Phaeocryptopus gaeumannii (Rhode) Petrak) EN Pseudotsuga menziessi var. glauca (Beissn.) Mayr

Cited by 2 publications

References 13 publications

Distribución de los bosques de Pseudotsuga menziesii (Mirb.) Franco en México

Distribución de los bosques de Pseudotsuga menziesii (Mirb.) Franco en México

Analysis of Swiss needle cast disease onPseudotsuga menziesiivar.glaucawithin a Christmas tree plantation in Mexico

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