Structural features and contribution of belowground buds to conservation of Fabaceae species in a seasonally dry Neotropical environment

Silva, Jane Rodrigues da; Yule, Tamires Soares; Scremin-Dias, Edna

doi:10.1016/j.flora.2020.151570

Cited by 3 publications

(2 citation statements)

References 34 publications

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“…Hence, even in the absence of fire, regeneration of the C. parviflora population via seed germination is low or already limited (see below). Considering the areaʼs high recurrence of fire, vegetative resprouting can be the dominant reproduction strategy of the species, as would be expected from species occupying stressful and adverse environments (Keeley & Zedler, 1978; Pate, Meney, & Dixon, 1991; Schutte et al, 1995; Silva, Yule, & Scremin‐Dias, 2020). In some species of Calliandra, the fecundity depends on the quality of pollination (Cruden et al, 1976); therefore, it was not affected by fire, which occurred in the pre‐dispersion phase of seeds during fruiting.…”

Section: Discussionmentioning

confidence: 99%

“…This specieshas underground body, which explains its survival after fire and hoeing (Pott & Pott, 1994). Resprouting from belowground buds is an important mechanism to increase aboveground branching in Fabaceae species from seasonally dry Neotropic environments (Silva et al, 2020). Hence, the resistance of vegetative organs to fire allows resprouting and may favor the persistence of C. parviflora in environments subject to recurrent fires.…”

Section: Discussionmentioning

confidence: 99%

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Fire damage on seeds of Calliandra parviflora Benth. (Fabaceae), a facultative seeder in a Brazilian flooding savanna

Ferreira

Guerra

Oliveira

et al. 2021

Plant Species Biology

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Optimal sexual reproduction in relation to fire effects varies in Fabaceae species. Calliandra species have a large investment in reproduction. We investigated the consequences of fire during the fruiting period of Calliandra parviflora Benth., by checking fruit exposure to fire, pre‐dispersal seed predator infestation, and the effect of fruit burning on germination. We conducted this study in a floodable savanna in central Brazil, where we collected burnt and unburnt fruits. We measured the fruit and seed mass, and counted the number of damaged and undamaged seeds and live larvae per fruit. We analyzed the seed germination percentage from burnt and unburnt fruits. The burnt fruits presented greater mass than the unburnt fruits, despite their seed mass being similar. The number of damaged seeds per fruit was only slightly higher in burnt compared to unburnt fruits (p = 0.047). The number of larvae on pre‐dispersal seeds per fruit varied from 0 to 4 and did not differ between burnt and unburnt fruits. The germination percentage of unburnt fruit seeds (mean = 22 ± 17%), was significantly higher than that of burnt fruit (mean = 3.0 ± 2.0%, p < 0.001). Fire during fruiting or pre‐dispersion decreases seed germination from 22 to 3%, but it does not hurt vegetative regeneration or resprout capacity of C. parviflora, which is a facultative seeder. Hence, we suggest that C. parviflora has potential for post‐fire restoration in floodable open grassy savannas, in the ecotone between Cerrado and Pantanal, because this species may sprout quickly after first post‐fire rains.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Fire damage on seeds of Calliandra parviflora Benth. (Fabaceae), a facultative seeder in a Brazilian flooding savanna

Ferreira

Guerra

Oliveira

et al. 2021

Plant Species Biology

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Bayesian Inference of Soil Traits from Green Manure Fields in a Tropical Sandy Soil

dos Santos Nascimento,

Souza,

da Silva

et al. 2024

Int. J. Plant Prod.

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Do root secondary xylem functional traits differ between growth forms in Fabaceae species in a seasonally dry Neotropical environment?

da Silva,

Yule,

Ribas

et al. 2023

Annals of Botany

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Background and Aims Whole-plant performance in water-stressed and disturbance-prone environments depends on a suitable supply of water from the roots to the leaves, storage of reserves during periods of shortage, and a morphological arrangement that guarantees the maintenance of the plants anchored to the soil. All these functions are performed by the secondary xylem of roots. Here, we investigate whether different growth forms of Fabaceae species from the seasonally dry Neotropical environment have distinct strategies for water transport, mechanical support and non-structural carbon and water storage in the root secondary xylem. Methods We evaluated cross-sections of root secondary xylem from species of trees, shrubs and subshrubs. We applied linear models to verify the variability in secondary xylem anatomical traits among growth forms. Key Results Secondary xylem with larger vessels and lower vessel density was observed in tree species. Vessel wall thickness, vessel grouping index, potential hydraulic conductivity and cell fractions (vessels, fibres, rays and axial parenchyma) were not statistically different between growth forms, owing to the high interspecific variation within the groups studied. Conclusion Our results showed that the variability in anatomical traits of the secondary xylem of the root is species specific. In summary, the cellular complexity of the secondary xylem ensures multiple functional strategies in species with distinct growth forms, a key trait for resource use in an environment with strong water seasonality.

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Structural features and contribution of belowground buds to conservation of Fabaceae species in a seasonally dry Neotropical environment

Cited by 3 publications

References 34 publications

Fire damage on seeds of Calliandra parviflora Benth. (Fabaceae), a facultative seeder in a Brazilian flooding savanna

Fire damage on seeds of Calliandra parviflora Benth. (Fabaceae), a facultative seeder in a Brazilian flooding savanna

Bayesian Inference of Soil Traits from Green Manure Fields in a Tropical Sandy Soil

Do root secondary xylem functional traits differ between growth forms in Fabaceae species in a seasonally dry Neotropical environment?

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