Seed development of Araucaria angustifolia: plant hormones and germinability in 2 years of seeds production

Shibata, Marília; Coelho, Cileide Maria Medeiros; Garighan, Julio A. de; Santos, H. P. dos; Araldi, Cristhyane Garcia; Maraschin, Marcelo

doi:10.1007/s11056-020-09821-2

Cited by 4 publications

(1 citation statement)

References 54 publications

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“…In the case of species from tropical environments, different studies have reported that seed maturation and quality would be more affected by precipitation during the growing season than by temperatures. For instance, in Inga vera (Lamarca and Barbedo, 2015), Eugenia pyriformis (Lamarca et al, 2016), and Araucaria angustifolia (Shibata et al, 2021) seeds produced under low precipitation matured in less time, had lower water content at shedding and were more tolerant to desiccation than seeds produced under higher precipitation.…”

Section: Potentials Impacts Of Climatic Change On Recalcitrant Seed S...mentioning

confidence: 99%

The potential impacts of climate change on ex situ conservation options for recalcitrant-seeded species

Fernández

León‐Lobos

Contreras

et al. 2023

Front. For. Glob. Change

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Recalcitrant seeds are characterized by desiccation and freezing sensitivity, and short storage longevity. These physiological attributes obviate their ex situ conservation in conventional seed banks, where seeds are stored dry at sub-zero temperatures (typically, 15% relative humidity and –20°C) for extended periods of time. Propagation of plants for field collections (e.g., botanical gardens, nurseries, and arboretums) is a valuable ex situ conservation option. However, these collections are relatively costly, require high maintenance, preserve limited genetic diversity and/or are directly exposed to biotic (e.g., pests) and abiotic (e.g., climatic) threats. Therefore, recalcitrant-seeded (RS) species are dependent on cryopreservation for their safe and long-term ex situ conservation. Different explant sources such as whole seeds, zygotic embryos, dormant buds, shoot tips, and pollen, can be used for plant propagation of RS species in field collections as well as for their cryopreservation. The success of the propagation or the cryopreservation of these explants often depends on their developmental status, vigor, and/or tolerance to desiccation and chilling/freezing. These attributes are modulated by the environment where the donor plant grows and we hypothesize that climate change, by affecting these biological attributes, would impact the success of explant propagation and cryopreservation. To support this hypothesis, we have reviewed how temperature changes and drought, the two main climate change scenarios, affect the main biological attributes that are directly involved in the success of ex situ conservation of tropical and temperate RS species. In general, increases in temperature and drought will negatively affect plant development in field collections and the quality of the explants used in cryopreservation. Consequently, field collections of RS species may need to be moved to more suitable places (e.g., higher latitudes/altitudes). Additionally, we may find a reduction in the success of cryopreservation of RS species germplasm directly harvested from field collections. However, we cannot always generalize these effects for all species since they often depend on the origin of the species (e.g., tropical and temperate species tend to respond to climate change differently), the genotype, the adaptive genetic potential of each population, and the severity of the environmental change. On the other hand, the increase in temperatures and water stress in donor plants at high-latitude areas and also some tropical environments may favor the production of seeds and seedlings better adapted to drying, and hence, increase the success of plant propagation and zygotic embryo cryopreservation.

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Section: Potentials Impacts Of Climatic Change On Recalcitrant Seed S...mentioning

confidence: 99%

The potential impacts of climate change on ex situ conservation options for recalcitrant-seeded species

Fernández

León‐Lobos

Contreras

et al. 2023

Front. For. Glob. Change

View full text Add to dashboard Cite

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Ultrasensitive detection of plant hormone abscisic acid-based surface-enhanced Raman spectroscopy aptamer sensor

Zhang

et al. 2022

Anal Bioanal Chem

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Polysaccharides from pinhão seeds of Araucaria angustifolia: Extraction, isolation and structural characterization

Barbieri

Lima

Baum

et al. 2023

Journal of Food Composition and Analysis

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Seed development of Araucaria angustifolia: plant hormones and germinability in 2 years of seeds production

Cited by 4 publications

References 54 publications

The potential impacts of climate change on ex situ conservation options for recalcitrant-seeded species

The potential impacts of climate change on ex situ conservation options for recalcitrant-seeded species

Ultrasensitive detection of plant hormone abscisic acid-based surface-enhanced Raman spectroscopy aptamer sensor

Polysaccharides from pinhão seeds of Araucaria angustifolia: Extraction, isolation and structural characterization

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