Germination, Emergence, and Survival of Buddleja cordata in an Urban Forest

Mendoza-Hernández, P; Orozco‐Segovia, Alma; Pisanty, Irene

doi:10.3368/er.28.3.263

Cited by 7 publications

(4 citation statements)

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“…Furthermore, it should be noted that P. campanulatus flowers between June and October (Castillo‐Argüero et al, 2007). Our observations suggest that its plants may retain their fruits and seeds for several months; therefore, it is probable that the differences in the germination percentage observed in this study were due to the environmental maternal effects experienced by the seeds in the fruits during the year of seed development and collection, as occurred in Buddleja cordata in the PECM (Fenner, 1991; Mendoza‐Hernández et al, 2010). These differences across years in germination response suggest phenotypic plasticity in this trait.…”

Section: Discussionmentioning

confidence: 70%

“…It is worth mentioning here that the climate at the seed population site was temperate in nature, and seeds of other species of the Crassulaceae and Plantaginaceae families growing in temperate climate are reported to possess physiological dormancy (Baskin & Baskin, 2014); however, no information is available on the seed dormancy pattern of our studied species. Due to the temperate climate and family of the studied species, we might infer that they have physiological dormancy that might be broken after storage in a laboratory or during burial, as reported in other species from lava fields (Belmont, Sánchez-Coronado, Osuna-Fernández, Orozco-Segovia, & Pisanty, 2018;Martínez-Villegas, Castillo-Argüero, Márquez-Guzmán, & Orozco-Segovia, 2018;Mendoza-Hernández, Orozco-Segovia, & Pisanty, 2010). Because the two populations of both studied species are established in sites with contrasting levels of elevation, mean temperature and precipitation, we hypothesized that the germination percentage, cardinal temperatures and thermal time would differ between populations due to: (a) the effect of the environmental conditions during seed development, (b) the effect of after-ripening during storage in the laboratory, and (c) the effect of the soil environment during burial.…”

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confidence: 96%

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The plasticity of the germinative response in the populations of two xeric species inhabiting two contrasting environments of central Mexico

Martínez‐Villegas

Castillo-Argüero

Márquez‐Guzmán

et al. 2021

Plant Species Biology

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The species' germination response evolves based on its population environment; therefore, the responses of each local population evolve independently. We investigated two xeric species from central Mexico, Echeveria gibbiflora and Penstemon campanulatus, the populations of which inhabit two localities (Reserva Ecológica del Pedregal de San Ángel [REPSA] and Parque Ecológico de la Ciudad de México [PECM]) that differ in environmental conditions. For both species and populations, final germination, cardinal temperatures, thermal time and range of temperature for germination (RTG) were determined in seeds that were (a) collected recently, (b) stored in a laboratory for 2 months and (c) reciprocally buried in field conditions for 2 months. The results indicated that for both species, seed population, laboratory storage and temperature were significant for final germination. These responses indicated differences in germination based primarily on the site in P. campanulatus (PECM seeds germinated at higher percentages than REPSA seeds) and the burial site in the REPSA seeds of E. gibbiflora. Cluster and discriminant analyses were conducted for both species, identifying the following significant variables for group treatments: base temperature between the stored and buried seeds of E. gibbiflora and the ceiling temperature between the recently collected, stored and buried seeds of P. campanulatus. The results suggest that instead of seed population, burial (in both species) and laboratory storage (in P. campanulatus) narrowed the RTG. These responses could indicate plasticity in both germination and dormancy in response to environmental conditions experienced in the different habitats, which are crucial for understanding species' adaptive capacity.

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Section: Discussionmentioning

confidence: 70%

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confidence: 96%

The plasticity of the germinative response in the populations of two xeric species inhabiting two contrasting environments of central Mexico

Martínez‐Villegas

Castillo-Argüero

Márquez‐Guzmán

et al. 2021

Plant Species Biology

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“…Particularly in the burned site, a 13 to 16% increase in anemochorous diaspores was associated with this species. This phanerophyte also has been reported to be dominant in the seed bank in the REPSA (Martínez-Orea et al, 2010), due to its huge production of tiny seeds easily dispersed by wind, showing successful germination but poor establishment (Mendoza-Hernández et al, 2010). Regardless, this species is favored by disturbances, as it is well represented in the secondary vegetation (Rzedowski and Rzedowski, 2001).…”

Section: Discussionmentioning

confidence: 99%

Seed rain after a fire in a xerophytic shrubland

et al. 2012

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Fire causes a reduction of plant cover due to the death of several structures, especially of those that are not isolated from high temperatures; such as seeds and fruits. After a disturbance the availability of diaspores is crucial for the recovery of the community. This work studied the composition and abundance of the seed rain in the xerophytic shrubland of the Pedregal de San Ángel Ecological Reserve, located at the Universidad Nacional Autónoma de México campus in Mexico City, which was affected by a surface fire. In order to understand the role of diaspores in the natural regeneration of a burned site, seed traps were placed on 2 sites, one affected by the fire and the other in an unburned location. During 1 year the dispersed seeds and fruits were collected and identified. Results showed that species richness, life forms, and dispersal syndromes were different between sites. The highest abundance and richness values were observed in the burned site. This work offers basic data on the availability of species as diaspores, information which is useful for potential restoration strategies especially in those areas under constant anthropogenic disturbances.

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“…Buddleja cordata Kunth (Scrophulariaceae) is a wild tree distributed in Mexico and Guatemala, commonly found in disturbed areas, along forest edges and water courses, at elevations of 1,500-3,000 m. Buddleja cordata is a pioneer species that can thrive in poor soils (Norman 2000, Mendoza-Hernández et al 2010). Several studies have described the B. cordata seed germination response to different priming treatments, showing that primed seeds germinate faster and more synchronously than untreated seeds.…”

Section: Author Contributionsmentioning

confidence: 99%

Mobilization and synthesis of seed storage and LEA proteins during natural priming of Buddleja cordata and Opuntia tomentosa

et al. 2018

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Background: In crop plants, the induction of seed storage protein mobilization and synthesis of LEA family proteins has been extensively described.Question: Natural priming promotes mobilization and synthesis of seed storage and LEA proteins in wild plants?Species studied: Buddleja cordata and Opuntia tomentosa. Study site: Reserva Ecológica del Pedregal de San Angel (REPSA). Methods: Natural priming treatments were applied to B. cordata and O. tomentosa seeds during one and six months respectively. Phosphorylated proteins fractions were obtained by affinity chromatography from control and treated seeds. Differences in protein pattern between control and treated seeds were determined by electrophoresis and the treated seed proteins were identified by LS/LS/MALDITOF. Results:The phosphorylated fraction of B. cordata treated seeds presented two proteins that were absent in the control protein fraction. These two proteins were identified as two different 11S globulins. The phosphorylated fraction of O. tomentosa treated seeds also presented two proteins that were absent in the control protein fraction. These two proteins were identified as a 12S globulin and a LEA protein. Conclusion:Seeds are subjected to changes in soil water content during their permanence in soil; this natural priming process promotes mobilization and synthesis of storage and LEA proteins that are involved in stress resistance.Key words: Buddleja cordata, natural priming, Opuntia tomentosa, seed proteins. ResumenAntecedentes: La inducción de la movilización y síntesis de proteínas de reserva y de proteínas de la familia LEA en respuesta al acondicionamiento es un proceso ampliamente descrito en plantas cultivadas.Preguntas: ¿El acondicionamiento natural promueve la movilización y síntesis de las proteínas de reserva y LEA en plantas silvestres?Especies: Buddleja cordata y Opuntia tomentosa. Métodos: Se aplicó el tratamiento de acondicionamiento natural a las semillas de B. cordata y O. tomentosa durante 1 y 6 meses respectivamente. La fracción de proteínas fosforiladas se obtuvo por medio de una cromatografía de afinidad de las semillas control y tratadas. Las diferencias en el patrón proteico entre semillas control y tratadas se determinaron por medio de una electroforesis y las proteínas de las semillas tratadas fueron identificadas por LS/LS/MALDITOF. Resultados:En las semillas tratadas de B. cordata se detectaron dos proteínas identificadas como 11S globulinas y en las semillas tratadas de O. tomentosa se detectaron dos proteínas correspondientes a una 12S globulina y una proteína LEA. Conclusiones:Durante su estancia en el suelo, las semillas están sujetas a cambios en el contenido de agua del suelo y este proceso de acondicionamiento natural promueve la movilización y síntesis de proteínas de reserva y LEA en las semillas, involucradas en la resistencia a estrés.Palabras clave: Acondicionamiento natural, Buddleja cordata, Opuntia tomentosa, proteínas de la semilla. Botanical Sciences (1): 76-83, 2018This is an open access article ...

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Germination, Emergence, and Survival of Buddleja cordata in an Urban Forest

Cited by 7 publications

References 2 publications

The plasticity of the germinative response in the populations of two xeric species inhabiting two contrasting environments of central Mexico

The plasticity of the germinative response in the populations of two xeric species inhabiting two contrasting environments of central Mexico

Seed rain after a fire in a xerophytic shrubland

Mobilization and synthesis of seed storage and LEA proteins during natural priming of Buddleja cordata and Opuntia tomentosa

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