Flora do Rio de Janeiro: Rhizophoraceae

Costa, Isabelle Gomes Cardoso Machado da; Moreira, Andréia Donza Rezende; Bove, Claudia Petean

doi:10.1590/2175-7860201768119

Cited by 2 publications

(3 citation statements)

References 4 publications

(1 reference statement)

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“…Rhizophoraceae is a pantropical family with six species and three hybrids (Mantiquilla et al 2021). Rhizophora mangle L., known as red mangrove, is a tree with an aerial structure system formed by unique branches with positive geotropism and rhizophores that rmly establish the tree in permanently swampy soils, forming a large number of roots (Pitot 1958;Menezes 2006;Costa et al 2017). Rhizophores are also interpreted as stilt roots or aerial roots and are considered an adaptation in ooded areas (Tomlinson 1986;Raven et al 1992;Evans et al 2005).…”

Section: Introductionmentioning

confidence: 99%

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Rapid detection of metals in red mangrove Rhizophora mangle leaves in a polluted environment in Brazil

Victório,

dos Santos,

Alves

et al. 2023

Int. J. Environ. Sci. Technol.

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Rhizophora mangle L. (Rhizophoraceae) is a halophyte from two mangroves in the municipality of Rio de Janeiro in Rio de Janeiro state, Brazil. This work aimed to determine the presence of environmental contaminants in the leaf of R. mangle through morphological and chemical analyses. We collected samples in Coroa Grande mangrove (CG), near an industrial park, and Pedra de Guaratiba mangrove (PG), which is currently under threat of anthropization by domestic occupation. Energy Dispersive X-Ray Spectroscopy (EDS) coupled to Scanning Electron Microscopy (SEM) revealed the presence of chemicals and their relative quantities in leaves. Light microscopy and Scanning Electron Microscopy (SEM) were used to examine leaf tissue. Na, Ca and Cl were found in both CG and PG. Speci c leaf area was signi cantly lower in PG. Leaves from CG also presented the three heavy metals Mn, Zn and Cu. R. mangle presents succulent, hypostomatic leaves with dorsiventral structure. Abundant mucilage and crystals in idioblasts were observed. Slight differences in anatomical qualitative traits between leaves from both sites were detected. Leaves from CG were slightly thicker than those examined from PG, especially on main vein vascular system, and a high quantity of stomata was observed in abaxial surface of leaves from PG. Collectively, these ndings indicate that R. mangle is resilient and tolerant to the environmental pollutants and presents functional traits related with saline environments; therefore, the morphoanatomical variations are probably related to abiotic factors. Highlights-The main minerals detected by EDS were Na, Ca and Cl.-Zn and Cu were the only heavy metals detected in R. mangle leaves in samples from CG.-A large number of stomata in leaves were observed in plants from PG.-Differences in spongy parenchyma and stomata were noted between leaves of PG and CG.-No anatomical changes related to pollution were noted.

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Section: Introductionmentioning

confidence: 99%

“…Three species are found in Brazil: R. mangle, R. racemosa and R. harrisonii (Menezes et al 2008). R. mangle is a multipurpose tree, the only species that occurs in Rio de Janeiro (Costa et al 2017). It can be used as a food in times of emergency.…”

Section: Introductionmentioning

confidence: 99%

Rapid detection of metals in red mangrove Rhizophora mangle leaves in a polluted environment in Brazil

Victório,

dos Santos,

Alves

et al. 2023

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Leaf traits and mineral contents of Rhizophora mangle L. subject to environmental pollution

Victório

Santos

Alves

et al. 2022

Preprint

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Rhizophora mangle L. (Rhizophoraceae) is a halophyte from two mangroves in the municipality of Rio de Janeiro in Rio de Janeiro state, Brazil. This work aimed to determine the presence of environmental contaminants in the leaf of R. mangle through morphological and chemical analyses. We collected samples in Coroa Grande mangrove (CG), near an industrial park, and Pedra de Guaratiba mangrove (PG), which is currently under threat of anthropization by domestic occupation. Energy Dispersive X-Ray Spectroscopy (EDS) coupled to Scanning Electron Microscopy (SEM) revealed the presence of chemicals and their relative quantities in leaves. Light microscopy and Scanning Electron Microscopy (SEM) were used to examine leaf tissue. Na, Ca and Cl were found in both CG and PG. Specific leaf area was significantly lower in PG. Leaves from CG also presented the three heavy metals Mn, Zn and Cu. R. mangle presents succulent, hypostomatic leaves with dorsiventral structure. Abundant mucilage and crystals in idioblasts were observed. Slight differences in anatomical qualitative traits between leaves from both sites were detected. Leaves from CG were slightly thicker than those examined from PG, especially on main vein vascular system, and a high quantity of stomata was observed in abaxial surface of leaves from PG. Collectively, these findings indicate that R. mangle is resilient and tolerant to the environmental pollutants and presents functional traits related with saline environments; therefore, the morphoanatomical variations are probably related to abiotic factors.

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Flora do Rio de Janeiro: Rhizophoraceae

Cited by 2 publications

References 4 publications

Rapid detection of metals in red mangrove Rhizophora mangle leaves in a polluted environment in Brazil

Rapid detection of metals in red mangrove Rhizophora mangle leaves in a polluted environment in Brazil

Leaf traits and mineral contents of Rhizophora mangle L. subject to environmental pollution

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