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Registro Completo |
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Biblioteca(s): |
Embrapa Agroindústria Tropical. |
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Data corrente: |
03/04/2025 |
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Data da última atualização: |
15/04/2025 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ARAÚJO, K. C.; SOUZA, B. C.; CARVALHO, E. C. D.; FREIRE, R. S.; TEIXEIRA, A. S.; MUNIZ, C. R.; MARTINS, F. R.; OLIVEIRA, R. S.; ELLER, C. B.; SOARES, A. A. |
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Afiliação: |
KARINA CRISÓSTOMO ARAÚJO, FEDERAL UNIVERSITY OF CEARÁ; BRUNO CRUZ SOUZA, FEDERAL UNIVERSITY OF CEARÁ; ELLEN CRISTINA DANTAS CARVALHO, FEDERAL UNIVERSITY OF CEARÁ; ROSEMEYRE SOUZA FREIRE, FEDERAL UNIVERSITY OF CEARÁ; ADUNIAS SANTOS TEIXEIRA, FEDERAL UNIVERSITY OF CEARÁ; CELLI RODRIGUES MUNIZ, CNPAT; FERNANDO ROBERTO MARTINS, UNIVERSITY OF CAMPINAS; RAFAEL SILVA OLIVEIRA, UNIVERSITY OF CAMPINAS; CLEITON BREDER ELLER, FEDERAL UNIVERSITY OF CEARÁ; ARLETE APARECIDA SOARES, FEDERAL UNIVERSITY OF CEARÁ. |
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Título: |
The multiple roles of trichomes in two Croton species. |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
Plant Cell and Environment, v. 47, n. 5, p. 1685 - 1700, 2024 . |
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DOI: |
10.1111/pce.14829 |
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Idioma: |
Inglês |
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Conteúdo: |
Trichomes are common in plants from dry environments, and despite their recognized role in protection and defense, little is known about their role as absorptive structures and in other aspects of leaf ecophysiology. We combine anatomical and ecophysiological data to evaluate how trichomes affect leaf gas exchange and water balance during drought. We studied two congeneric species with pubescent leaves which co‐occur in Brazilian Caatinga: Croton blanchetianus (dense trichomes) and Croton adenocalyx (sparse trichomes). We found a novel foliar water uptake (FWU) pathway in C. blanchetianus composed of stellate trichomes and underlying epidermal cells and sclereids that interconnect the trichomes from both leaf surfaces. The water absorbed by these trichomes is redistributed laterally by pectin protuberances on mesophyll cell walls. This mechanism enables C. blanchetianus leaves to absorb water more efficiently than C. adenocalyx. Consequently, the exposure of C. blanchetianus to dew during drought improved its leaf gas exchange and water status more than C. adenocalyx. C. blanchetianus trichomes also increase their leaf capacity to reflect light and maintain lower temperatures during drought. Our results emphasize the multiple roles that trichomes might have on plant functioning and the importance of FWU for the ecophysiology of Caatinga plants during drought. |
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Palavras-Chave: |
Absorção de água foliar; Mesophyll Cells; Plant Leaves; Troca gasosa foliar. |
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Thesagro: |
Caatinga; Cróton; Orvalho; Seca. |
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Thesaurus Nal: |
Dew; Drainage water; Drought; Solanum crotonoides; Trichomes. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02435naa a2200397 a 4500
001 2174423
005 2025-04-15
008 2024 bl uuuu u00u1 u #d
024 7 $a10.1111/pce.14829$2DOI
100 1 $aARAÚJO, K. C.
245 $aThe multiple roles of trichomes in two Croton species.$h[electronic resource]
260 $c2024
520 $aTrichomes are common in plants from dry environments, and despite their recognized role in protection and defense, little is known about their role as absorptive structures and in other aspects of leaf ecophysiology. We combine anatomical and ecophysiological data to evaluate how trichomes affect leaf gas exchange and water balance during drought. We studied two congeneric species with pubescent leaves which co‐occur in Brazilian Caatinga: Croton blanchetianus (dense trichomes) and Croton adenocalyx (sparse trichomes). We found a novel foliar water uptake (FWU) pathway in C. blanchetianus composed of stellate trichomes and underlying epidermal cells and sclereids that interconnect the trichomes from both leaf surfaces. The water absorbed by these trichomes is redistributed laterally by pectin protuberances on mesophyll cell walls. This mechanism enables C. blanchetianus leaves to absorb water more efficiently than C. adenocalyx. Consequently, the exposure of C. blanchetianus to dew during drought improved its leaf gas exchange and water status more than C. adenocalyx. C. blanchetianus trichomes also increase their leaf capacity to reflect light and maintain lower temperatures during drought. Our results emphasize the multiple roles that trichomes might have on plant functioning and the importance of FWU for the ecophysiology of Caatinga plants during drought.
650 $aDew
650 $aDrainage water
650 $aDrought
650 $aSolanum crotonoides
650 $aTrichomes
650 $aCaatinga
650 $aCróton
650 $aOrvalho
650 $aSeca
653 $aAbsorção de água foliar
653 $aMesophyll Cells
653 $aPlant Leaves
653 $aTroca gasosa foliar
700 1 $aSOUZA, B. C.
700 1 $aCARVALHO, E. C. D.
700 1 $aFREIRE, R. S.
700 1 $aTEIXEIRA, A. S.
700 1 $aMUNIZ, C. R.
700 1 $aMARTINS, F. R.
700 1 $aOLIVEIRA, R. S.
700 1 $aELLER, C. B.
700 1 $aSOARES, A. A.
773 $tPlant Cell and Environment$gv. 47, n. 5, p. 1685 - 1700, 2024 .
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Registro original: |
Embrapa Agroindústria Tropical (CNPAT) |
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