GERMINATION AND SEEDLINGS DEVELOPMENT OF THE THREATENED SPECIES Quillaja brasiliensis

Velazco, Santiago José Elías; Blum, Christopher Thomas; Hoffmann, Pablo Melo

doi:10.1590/01047760201824022530

Cited by 3 publications

(2 citation statements)

References 12 publications

(15 reference statements)

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“…Unlike QS, QB leaves contain more saponins than bark (0.085 % vs 0.022 % of dry weight) (Magedans et al, 2019). The renewable use of bioactive saponins from QB leaves has gained more importance in recent years (Yendo et al, 2014;Costa et al, 2013Costa et al, , 2014Velazco et al, 2018;Cibulski et al, 2017Cibulski et al, -2018Fleck et al, 2009Fleck et al, , 2019Wallace et al, 2017Wallace et al, , 2019. According to the Brazilian National Center for Flora Conservation (CNCF, 2012), QB is an endangered species due to overgrazing and inadequate management, despite its economic importance.…”

Section: Introductionmentioning

confidence: 99%

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Saponin production from Quillaja genus species. An insight into its applications and biology

Guerra

Sepúlveda

2021

Sci. agric. (Piracicaba, Braz.)

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Quillaja genus (Quillajaceae family) is endemic to South America, where is represented by two species, Quillaja saponaria and Quillaja brasiliensis. One outstanding characteristic of these forest tree species is their production of saponins, a family of amphipathic glycosides, involved in the defensive response of plants against biotic and abiotic factors. Saponins are metabolites of economic importance due to their chemical and physical properties. Basic and applied research efforts performed during the last decades, mainly on Q. saponaria, have placed these compounds as an important raw material in industrial areas, such as food and beverage, cosmetics, vaccine production, biopesticides, among others. In this review, we summarize information on saponins from Quillaja species during the last years, analyzing current developments by application areas, as well as their chemical composition and properties. We also describe the general advances in revealing saponin biosynthesis pathways, related genes and Quillaja genomes, as well as the conservation status, domestication processes, and perspectives in the context of implementing genetic improvement programs.

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Section: Introductionmentioning

confidence: 99%

“…Advances in the generation of protocols for propagating QB have been produced considering seeds and tissue culture. It has been determined that QB seeds could maintain a germination rate of 80 % after 18 months (Velazco et al, 2018). According to Fleck et al (2009), which could be further increased when aseptic culture media are used.…”

Section: Introductionmentioning

confidence: 99%

Saponin production from Quillaja genus species. An insight into its applications and biology

Guerra

Sepúlveda

2021

Sci. agric. (Piracicaba, Braz.)

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Quillaja brasiliensis (A. St.-Hil. & Tul.) Mart.

Chiesa

Wallace

Bennadji

et al. 2021

Medicinal and Aromatic Plants of the World

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Leaf litter hides post-dispersed seeds from invasive alien removers in a sclerophyll forest in central Chile

2021

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Aim of the study: Seed removal may be a determining filter for regeneration. Factors such as leaf litter, tree cover and seed density affect seed removal. This aims to assess three aspects involving on post dispersal seed removal of four woody species (Lithraea caustica, Maytenus boaria, Quillaja saponaria and Retanilla ephedra) of a sclerophyll forest.Study area: Andean Mediterranean sclerophyll forest of Quillaja saponaria and Lithraea caustica located in the Río de Los Cipreses National Reserve, Chile.Materials and methods: Seven experimental plots were set up, in which seeds were offered in an experiment with variations in leaf litter, tree cover and seed density. Generalized Linear Mixed Models (GLMM) were used for the statistical analysis. Camera traps were installed to identify the seed removers.Main results: Q. saponaria seeds were more removed than the seeds of the other species (0.84, observed mean). Whereas that M. boaria and R. ephedra did not show significant differences on the removal of their seeds (0.77 and 0.67 respectively), both were more removed than L. caustica (0.59). The removal of M. boaria, Q. saponaria and R. ephedra seeds was lower in the presence of leaf litter. No factor influenced the removal of L. caustica seeds. Seed removers were identified as invasive alien species such as Rattus sp. and Oryctolagus cuniculus and native species such as Lycalopex culpaeus.Research highlights: Three woody species of this forest suffer severe seed removal by invasive alien fauna with major implications for the resilience of these forests. The coverage of leaf litter is key to hide away the seeds, increasing survival and could promote germination.Keywords: invasive alien fauna; Mediterranean forest; sclerophyll forest; seed removal factors.

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GERMINATION AND SEEDLINGS DEVELOPMENT OF THE THREATENED SPECIES Quillaja brasiliensis

Cited by 3 publications

References 12 publications

Saponin production from Quillaja genus species. An insight into its applications and biology

Saponin production from Quillaja genus species. An insight into its applications and biology

Quillaja brasiliensis (A. St.-Hil. & Tul.) Mart.

Leaf litter hides post-dispersed seeds from invasive alien removers in a sclerophyll forest in central Chile

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