Do fires affects growth, seed production and germination of the globose cactus Gymnocalycium monvillei?

Lorenzati, Marina A.; Aliscioni, Nayla L.; Barroso, Francisco; Gurvich, Diego E.

doi:10.1016/j.jaridenv.2021.104663

Cited by 2 publications

(2 citation statements)

References 34 publications

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“…terms of distribution, altitude, reproduction genetics, and response to fire (Gurvich et al 2014;Bauk et al 2015Bauk et al , 2017Bauk et al , 2023aBauk et al , 2023bGiorgis et al 2015;Lorenzati et al 2022). Hence, in this study, our aims were to assess whether there is a tradeoff between growth and reproduction, and to analyse if growth and allocation to reproduction depend on the size of the individual.…”

Section: Introductionmentioning

confidence: 98%

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Growing or reproducing? Assessing the existence of a trade‐off in the globose cactus Gymnocalycium monvillei

Lorenzati,

Aliscioni,

Delbón

et al. 2024

Plant Biol J

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Resource allocation in plants is a fundamental aspect of life history theory. In Cactaceae, the specific trade‐off between sexual reproduction and vegetative growth has still not been studied. The aim of this work was to assess if there is a trade‐off between growth and reproduction, and to analyse whether both growth and allocation to reproduction depend on size of the individual. In this study, we used Gymnocalycium monvillei, a globose cactus endemic to the mountains of central Argentina, as a model species. Specifically, we analysed the relationship of growth (percentage increase in diameter) and size of individuals (diameter) to seed production, seed mass, germination, and mean germination time. To relativize the effect of size on seed production, two variables were calculated: the ratio of seed production to plant size (RSPS), and the ratio of total seed mass to plant size (RSMS). We found that both seed production and total seed mass were significantly related to cactus size. However, growth was not related to seed mass or to seed production, even when they were relativized. Germination and mean germination time were not related to plant size or growth. In the studied species, a slow‐growing globose cactus, we did not find a trade‐off between growth and reproduction.

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Section: Introductionmentioning

confidence: 98%

“…2015; Lorenzati et al . 2022). Hence, in this study, our aims were to assess whether there is a trade‐off between growth and reproduction, and to analyse if growth and allocation to reproduction depend on the size of the individual.…”

Section: Introductionmentioning

confidence: 99%

Growing or reproducing? Assessing the existence of a trade‐off in the globose cactus Gymnocalycium monvillei

Lorenzati,

Aliscioni,

Delbón

et al. 2024

Plant Biol J

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The Cerrado through cacti

Köhler,

Romeiro‐Brito,

Telhe

2024

Journal of Biogeography

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Cerrado is a large and heterogeneous ecoregion in the Neotropics marked by the fire‐prone savanna vegetation, to which succulent lineages are usually not associated due to this adverse condition. However, recent studies have highlighted the importance of Cerrado as an ancestral range for the origin, dispersal and in situ diversification of remarkable lineages of South American cacti. In this perspective, we explore the implications of these occurrences in the Cerrado, shedding light on a frequently overlooked aspect of this ecoregion—the role of scattered rocky outcrop habitats acting as micro‐refuges for fire‐sensitive lineages. We show that most cacti occurrences are associated with patches of rock outcrops across the Cerrado. In contrast, when terricolous, a few disparate and not closely related species can develop underground structures or present a specialized habit that facilitates their presence as a putative response to fire—reinforcing the evolutionary lability of fire adaptation in Cerrado lineages. Despite some notable endemisms, several occurrences are from species with core distributions in adjacent ecoregions (e.g. Caatinga and Chaco), demonstrating the permeability of Cerrado, which can act concomitantly as a biogeographical barrier (especially due to its fire‐prone habitats) and as a corridor for biota interchange. Finally, we stress that Cerrado heterogeneity, often leading to different circumscriptions, is a relevant issue when studying and characterizing Neotropical biota, which must be further explored and considered to assess the evolutionary assembly of the biomes involved.

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Do fires affects growth, seed production and germination of the globose cactus Gymnocalycium monvillei?

Cited by 2 publications

References 34 publications

Growing or reproducing? Assessing the existence of a trade‐off in the globose cactus Gymnocalycium monvillei

Growing or reproducing? Assessing the existence of a trade‐off in the globose cactus Gymnocalycium monvillei

The Cerrado through cacti

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