Anatomical and Micromorphological Traits in Leaf Blade of Halophytes from a Brazilian Sandy Coastal Plain

Silva, Bianca Ortiz da; Victório, Cristiane Pimentel; Arruda, Rosani do Carmo de Oliveira

doi:10.1007/978-3-030-17854-3_30-1

Cited by 2 publications

(1 citation statement)

References 31 publications

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“…Isolateral leaves are found in plants living in sites where incident light is received from upper and lower orientations, possibly improving the photosynthetic process in an otherwise growth-limiting environment. As part of the mesophyll, the spongy parenchyma, similar to an aquiferous tissue, is a common, but no less remarkable, tissue in halophytes and has a fundamental role in the dilution of salts that are absorbed together with water and that can accumulate in levels toxic to the plant (Silva et al 2020;Larcher 1996).…”

Section: Discussionmentioning

confidence: 99%

Laguncularia Racemosa Leaves from a Mangrove of the Southeast Atlantic Coast, Brazil: Epicuticular Wax, Morphoanatomical Traits and Minerals

Victório

Santos

Dias

et al. 2021

Preprint

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Leaves of Laguncularia racemosa (L.) Gaertn. f. were collected from the following mangroves along Brazil’s southeastern Atlantic coast: Coroa Grande (CG), Pedra de Guaratiba (PG) and Marambaia (M). This work aimed to evaluate the presence of minerals by Energy Dispersive X-Ray Spectroscopy (EDS) and Inductively coupled plasma - optical emission spectrometry (ICP-OES); the chemical composition of epicuticular waxes by gas chromatography–mass spectrometry (GC-MS) and the leaf morphoanatomical features. Results revealed variation in metal contents among mangroves in the following ranges: Al (0.307–0.73), Cd (0.004–0.016) and Pb (0.095–0.325) mg/mL by ICP-OES. Leaf epicuticular wax contained more than 50% of triterpenes, in particular the pentacyclic triterpenes lupeol (41.61–55.63%) and β-amyrin (8.81–16.35%), as well as n-alkanes, such as hentriacontane and tetratetracontane. In particular, we observed differences in the micromorphology of the epicuticular wax in the leaves of plants from each of the three evaluated sites, especially around stomatal entrances. Histochemical reaction indicated the presence of zinc in fiber cell walls and druse crystals of leaves.

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Section: Discussionmentioning

confidence: 99%

Laguncularia Racemosa Leaves from a Mangrove of the Southeast Atlantic Coast, Brazil: Epicuticular Wax, Morphoanatomical Traits and Minerals

Victório

Santos

Dias

et al. 2021

Preprint

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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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Anatomical and Micromorphological Traits in Leaf Blade of Halophytes from a Brazilian Sandy Coastal Plain

Cited by 2 publications

References 31 publications

Laguncularia Racemosa Leaves from a Mangrove of the Southeast Atlantic Coast, Brazil: Epicuticular Wax, Morphoanatomical Traits and Minerals

Laguncularia Racemosa Leaves from a Mangrove of the Southeast Atlantic Coast, Brazil: Epicuticular Wax, Morphoanatomical Traits and Minerals

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

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