Adaptações anatômicas em folhas de marmeleiro e velame da caatinga brasileira Anatomical adaptations in leaves of the quince and velame of the Brazilian caatinga

A disponibilidade de água é o principal fator limitante para as espécies vegetais em ambientes áridos e semiáridos. Nessas plantas, uma combinação de características contribui para a economia hídrica, entre elas as anatômicas. Assim, estudos em folhas de marmeleiro (Croton blanchetianus) e velame (Croton heliotropiifolius), duas espécies comuns na caatinga e de importância apícola, foram realizados para verificar as características anatômicas adaptativas relacionadas à maior eficiência na utilização de água. As folhas de ambas as espécies possuem indumento denso, parede das células basais dos tricomas impregnadas com lipídios e compostos fenólicos nas células epidérmicas e parenquimáticas. Em plantas de ambientes áridos, os tricomas podem ajudar a reduzir o aquecimento e a transpiração foliar e também impedir o fluxo apoplástico da água devido à presença de lipídios nas paredes das células basais. Estas características anatômicas podem atuar na economia hídrica e ser, desta maneira, consideradas adaptações às condições de semiaridez da caatinga.<br<Water availability is the main limiting factor for plants in arid and semi-arid environments. In these plants, a combination of characteristics contributes to water economy, among them being anatomical features. Thus, studies in leaves of the quince (Croton blanchetianus) and the velame (Croton heliotropiifolius), two common species in the caatinga and of importance in beekeeping, were performed to verify adaptive anatomical characteristics which are related to a greater efficiency in water usage. The leaves of both species have a dense indumentum, the basal-cell walls of the trichomes are impregnated with lipids, and phenolic compounds are found in the epidermal and parenchymal cells. In plants from arid environments, the trichomes can help reduce heating and leaf transpiration and also prevent the apoplastic flow of water due to the presence of lipids in the walls of the basal cells. These anatomical features may act on the water economy, and can thus be considered as adaptations to the semi-arid conditions of the caatinga. Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Ileane Oliveira Barros [verfasserIn] Arlete Aparecida Soares [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch ; Spanisch ; Portugiesisch

Erschienen:	2013

Schlagwörter:	Marmeleiro Croton Plantas e água Plantas da caatinga Quince Plants and water Plants caatinga

Übergeordnetes Werk:	In: Revista Ciência Agronômica - Universidade Federal do Ceará, 2012, 44(2013), 1, Seite 192-198
Übergeordnetes Werk:	volume:44 ; year:2013 ; number:1 ; pages:192-198

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc Journal toc

DOI / URN:	10.1590/S1806-66902013000100024

Katalog-ID:	DOAJ02284418X

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spelling	10.1590/S1806-66902013000100024 doi (DE-627)DOAJ02284418X (DE-599)DOAJa2e4cfe5c3644b0a99d6f7a1d66582b2 DE-627 ger DE-627 rakwb eng spa por S1-972 Ileane Oliveira Barros verfasserin aut Adaptações anatômicas em folhas de marmeleiro e velame da caatinga brasileira Anatomical adaptations in leaves of the quince and velame of the Brazilian caatinga 2013 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A disponibilidade de água é o principal fator limitante para as espécies vegetais em ambientes áridos e semiáridos. Nessas plantas, uma combinação de características contribui para a economia hídrica, entre elas as anatômicas. Assim, estudos em folhas de marmeleiro (Croton blanchetianus) e velame (Croton heliotropiifolius), duas espécies comuns na caatinga e de importância apícola, foram realizados para verificar as características anatômicas adaptativas relacionadas à maior eficiência na utilização de água. As folhas de ambas as espécies possuem indumento denso, parede das células basais dos tricomas impregnadas com lipídios e compostos fenólicos nas células epidérmicas e parenquimáticas. Em plantas de ambientes áridos, os tricomas podem ajudar a reduzir o aquecimento e a transpiração foliar e também impedir o fluxo apoplástico da água devido à presença de lipídios nas paredes das células basais. Estas características anatômicas podem atuar na economia hídrica e ser, desta maneira, consideradas adaptações às condições de semiaridez da caatinga.<br<Water availability is the main limiting factor for plants in arid and semi-arid environments. In these plants, a combination of characteristics contributes to water economy, among them being anatomical features. Thus, studies in leaves of the quince (Croton blanchetianus) and the velame (Croton heliotropiifolius), two common species in the caatinga and of importance in beekeeping, were performed to verify adaptive anatomical characteristics which are related to a greater efficiency in water usage. The leaves of both species have a dense indumentum, the basal-cell walls of the trichomes are impregnated with lipids, and phenolic compounds are found in the epidermal and parenchymal cells. In plants from arid environments, the trichomes can help reduce heating and leaf transpiration and also prevent the apoplastic flow of water due to the presence of lipids in the walls of the basal cells. These anatomical features may act on the water economy, and can thus be considered as adaptations to the semi-arid conditions of the caatinga. Marmeleiro Croton Plantas e água Plantas da caatinga Quince Plants and water Plants caatinga Agriculture (General) Arlete Aparecida Soares verfasserin aut In Revista Ciência Agronômica Universidade Federal do Ceará, 2012 44(2013), 1, Seite 192-198 (DE-627)634762370 (DE-600)2572193-8 18066690 nnns volume:44 year:2013 number:1 pages:192-198 https://doi.org/10.1590/S1806-66902013000100024 kostenfrei https://doaj.org/article/a2e4cfe5c3644b0a99d6f7a1d66582b2 kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902013000100024 kostenfrei https://doaj.org/toc/0045-6888 Journal toc kostenfrei https://doaj.org/toc/1806-6690 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4367 GBV_ILN_4700 AR 44 2013 1 192-198
allfields_unstemmed	10.1590/S1806-66902013000100024 doi (DE-627)DOAJ02284418X (DE-599)DOAJa2e4cfe5c3644b0a99d6f7a1d66582b2 DE-627 ger DE-627 rakwb eng spa por S1-972 Ileane Oliveira Barros verfasserin aut Adaptações anatômicas em folhas de marmeleiro e velame da caatinga brasileira Anatomical adaptations in leaves of the quince and velame of the Brazilian caatinga 2013 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A disponibilidade de água é o principal fator limitante para as espécies vegetais em ambientes áridos e semiáridos. Nessas plantas, uma combinação de características contribui para a economia hídrica, entre elas as anatômicas. Assim, estudos em folhas de marmeleiro (Croton blanchetianus) e velame (Croton heliotropiifolius), duas espécies comuns na caatinga e de importância apícola, foram realizados para verificar as características anatômicas adaptativas relacionadas à maior eficiência na utilização de água. As folhas de ambas as espécies possuem indumento denso, parede das células basais dos tricomas impregnadas com lipídios e compostos fenólicos nas células epidérmicas e parenquimáticas. Em plantas de ambientes áridos, os tricomas podem ajudar a reduzir o aquecimento e a transpiração foliar e também impedir o fluxo apoplástico da água devido à presença de lipídios nas paredes das células basais. Estas características anatômicas podem atuar na economia hídrica e ser, desta maneira, consideradas adaptações às condições de semiaridez da caatinga.<br<Water availability is the main limiting factor for plants in arid and semi-arid environments. In these plants, a combination of characteristics contributes to water economy, among them being anatomical features. Thus, studies in leaves of the quince (Croton blanchetianus) and the velame (Croton heliotropiifolius), two common species in the caatinga and of importance in beekeeping, were performed to verify adaptive anatomical characteristics which are related to a greater efficiency in water usage. The leaves of both species have a dense indumentum, the basal-cell walls of the trichomes are impregnated with lipids, and phenolic compounds are found in the epidermal and parenchymal cells. In plants from arid environments, the trichomes can help reduce heating and leaf transpiration and also prevent the apoplastic flow of water due to the presence of lipids in the walls of the basal cells. These anatomical features may act on the water economy, and can thus be considered as adaptations to the semi-arid conditions of the caatinga. Marmeleiro Croton Plantas e água Plantas da caatinga Quince Plants and water Plants caatinga Agriculture (General) Arlete Aparecida Soares verfasserin aut In Revista Ciência Agronômica Universidade Federal do Ceará, 2012 44(2013), 1, Seite 192-198 (DE-627)634762370 (DE-600)2572193-8 18066690 nnns volume:44 year:2013 number:1 pages:192-198 https://doi.org/10.1590/S1806-66902013000100024 kostenfrei https://doaj.org/article/a2e4cfe5c3644b0a99d6f7a1d66582b2 kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902013000100024 kostenfrei https://doaj.org/toc/0045-6888 Journal toc kostenfrei https://doaj.org/toc/1806-6690 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4367 GBV_ILN_4700 AR 44 2013 1 192-198
allfieldsGer	10.1590/S1806-66902013000100024 doi (DE-627)DOAJ02284418X (DE-599)DOAJa2e4cfe5c3644b0a99d6f7a1d66582b2 DE-627 ger DE-627 rakwb eng spa por S1-972 Ileane Oliveira Barros verfasserin aut Adaptações anatômicas em folhas de marmeleiro e velame da caatinga brasileira Anatomical adaptations in leaves of the quince and velame of the Brazilian caatinga 2013 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A disponibilidade de água é o principal fator limitante para as espécies vegetais em ambientes áridos e semiáridos. Nessas plantas, uma combinação de características contribui para a economia hídrica, entre elas as anatômicas. Assim, estudos em folhas de marmeleiro (Croton blanchetianus) e velame (Croton heliotropiifolius), duas espécies comuns na caatinga e de importância apícola, foram realizados para verificar as características anatômicas adaptativas relacionadas à maior eficiência na utilização de água. As folhas de ambas as espécies possuem indumento denso, parede das células basais dos tricomas impregnadas com lipídios e compostos fenólicos nas células epidérmicas e parenquimáticas. Em plantas de ambientes áridos, os tricomas podem ajudar a reduzir o aquecimento e a transpiração foliar e também impedir o fluxo apoplástico da água devido à presença de lipídios nas paredes das células basais. Estas características anatômicas podem atuar na economia hídrica e ser, desta maneira, consideradas adaptações às condições de semiaridez da caatinga.<br<Water availability is the main limiting factor for plants in arid and semi-arid environments. In these plants, a combination of characteristics contributes to water economy, among them being anatomical features. Thus, studies in leaves of the quince (Croton blanchetianus) and the velame (Croton heliotropiifolius), two common species in the caatinga and of importance in beekeeping, were performed to verify adaptive anatomical characteristics which are related to a greater efficiency in water usage. The leaves of both species have a dense indumentum, the basal-cell walls of the trichomes are impregnated with lipids, and phenolic compounds are found in the epidermal and parenchymal cells. In plants from arid environments, the trichomes can help reduce heating and leaf transpiration and also prevent the apoplastic flow of water due to the presence of lipids in the walls of the basal cells. These anatomical features may act on the water economy, and can thus be considered as adaptations to the semi-arid conditions of the caatinga. Marmeleiro Croton Plantas e água Plantas da caatinga Quince Plants and water Plants caatinga Agriculture (General) Arlete Aparecida Soares verfasserin aut In Revista Ciência Agronômica Universidade Federal do Ceará, 2012 44(2013), 1, Seite 192-198 (DE-627)634762370 (DE-600)2572193-8 18066690 nnns volume:44 year:2013 number:1 pages:192-198 https://doi.org/10.1590/S1806-66902013000100024 kostenfrei https://doaj.org/article/a2e4cfe5c3644b0a99d6f7a1d66582b2 kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902013000100024 kostenfrei https://doaj.org/toc/0045-6888 Journal toc kostenfrei https://doaj.org/toc/1806-6690 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4367 GBV_ILN_4700 AR 44 2013 1 192-198
allfieldsSound	10.1590/S1806-66902013000100024 doi (DE-627)DOAJ02284418X (DE-599)DOAJa2e4cfe5c3644b0a99d6f7a1d66582b2 DE-627 ger DE-627 rakwb eng spa por S1-972 Ileane Oliveira Barros verfasserin aut Adaptações anatômicas em folhas de marmeleiro e velame da caatinga brasileira Anatomical adaptations in leaves of the quince and velame of the Brazilian caatinga 2013 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A disponibilidade de água é o principal fator limitante para as espécies vegetais em ambientes áridos e semiáridos. Nessas plantas, uma combinação de características contribui para a economia hídrica, entre elas as anatômicas. Assim, estudos em folhas de marmeleiro (Croton blanchetianus) e velame (Croton heliotropiifolius), duas espécies comuns na caatinga e de importância apícola, foram realizados para verificar as características anatômicas adaptativas relacionadas à maior eficiência na utilização de água. As folhas de ambas as espécies possuem indumento denso, parede das células basais dos tricomas impregnadas com lipídios e compostos fenólicos nas células epidérmicas e parenquimáticas. Em plantas de ambientes áridos, os tricomas podem ajudar a reduzir o aquecimento e a transpiração foliar e também impedir o fluxo apoplástico da água devido à presença de lipídios nas paredes das células basais. Estas características anatômicas podem atuar na economia hídrica e ser, desta maneira, consideradas adaptações às condições de semiaridez da caatinga.<br<Water availability is the main limiting factor for plants in arid and semi-arid environments. In these plants, a combination of characteristics contributes to water economy, among them being anatomical features. Thus, studies in leaves of the quince (Croton blanchetianus) and the velame (Croton heliotropiifolius), two common species in the caatinga and of importance in beekeeping, were performed to verify adaptive anatomical characteristics which are related to a greater efficiency in water usage. The leaves of both species have a dense indumentum, the basal-cell walls of the trichomes are impregnated with lipids, and phenolic compounds are found in the epidermal and parenchymal cells. In plants from arid environments, the trichomes can help reduce heating and leaf transpiration and also prevent the apoplastic flow of water due to the presence of lipids in the walls of the basal cells. These anatomical features may act on the water economy, and can thus be considered as adaptations to the semi-arid conditions of the caatinga. Marmeleiro Croton Plantas e água Plantas da caatinga Quince Plants and water Plants caatinga Agriculture (General) Arlete Aparecida Soares verfasserin aut In Revista Ciência Agronômica Universidade Federal do Ceará, 2012 44(2013), 1, Seite 192-198 (DE-627)634762370 (DE-600)2572193-8 18066690 nnns volume:44 year:2013 number:1 pages:192-198 https://doi.org/10.1590/S1806-66902013000100024 kostenfrei https://doaj.org/article/a2e4cfe5c3644b0a99d6f7a1d66582b2 kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902013000100024 kostenfrei https://doaj.org/toc/0045-6888 Journal toc kostenfrei https://doaj.org/toc/1806-6690 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4367 GBV_ILN_4700 AR 44 2013 1 192-198
language	English Spanish Portuguese
source	In Revista Ciência Agronômica 44(2013), 1, Seite 192-198 volume:44 year:2013 number:1 pages:192-198
sourceStr	In Revista Ciência Agronômica 44(2013), 1, Seite 192-198 volume:44 year:2013 number:1 pages:192-198
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topic_facet	Marmeleiro Croton Plantas e água Plantas da caatinga Quince Plants and water Plants caatinga Agriculture (General)
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container_title	Revista Ciência Agronômica
authorswithroles_txt_mv	Ileane Oliveira Barros @@aut@@ Arlete Aparecida Soares @@aut@@
publishDateDaySort_date	2013-01-01T00:00:00Z
hierarchy_top_id	634762370
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callnumber-first	S - Agriculture
author	Ileane Oliveira Barros
spellingShingle	Ileane Oliveira Barros misc S1-972 misc Marmeleiro misc Croton misc Plantas e água misc Plantas da caatinga misc Quince misc Plants and water misc Plants caatinga misc Agriculture (General) Adaptações anatômicas em folhas de marmeleiro e velame da caatinga brasileira Anatomical adaptations in leaves of the quince and velame of the Brazilian caatinga
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topic_title	S1-972 Adaptações anatômicas em folhas de marmeleiro e velame da caatinga brasileira Anatomical adaptations in leaves of the quince and velame of the Brazilian caatinga Marmeleiro Croton Plantas e água Plantas da caatinga Quince Plants and water Plants caatinga
topic	misc S1-972 misc Marmeleiro misc Croton misc Plantas e água misc Plantas da caatinga misc Quince misc Plants and water misc Plants caatinga misc Agriculture (General)
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title	Adaptações anatômicas em folhas de marmeleiro e velame da caatinga brasileira Anatomical adaptations in leaves of the quince and velame of the Brazilian caatinga
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title_full	Adaptações anatômicas em folhas de marmeleiro e velame da caatinga brasileira Anatomical adaptations in leaves of the quince and velame of the Brazilian caatinga
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title_sort	adaptações anatômicas em folhas de marmeleiro e velame da caatinga brasileira anatomical adaptations in leaves of the quince and velame of the brazilian caatinga
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title_auth	Adaptações anatômicas em folhas de marmeleiro e velame da caatinga brasileira Anatomical adaptations in leaves of the quince and velame of the Brazilian caatinga
abstract	A disponibilidade de água é o principal fator limitante para as espécies vegetais em ambientes áridos e semiáridos. Nessas plantas, uma combinação de características contribui para a economia hídrica, entre elas as anatômicas. Assim, estudos em folhas de marmeleiro (Croton blanchetianus) e velame (Croton heliotropiifolius), duas espécies comuns na caatinga e de importância apícola, foram realizados para verificar as características anatômicas adaptativas relacionadas à maior eficiência na utilização de água. As folhas de ambas as espécies possuem indumento denso, parede das células basais dos tricomas impregnadas com lipídios e compostos fenólicos nas células epidérmicas e parenquimáticas. Em plantas de ambientes áridos, os tricomas podem ajudar a reduzir o aquecimento e a transpiração foliar e também impedir o fluxo apoplástico da água devido à presença de lipídios nas paredes das células basais. Estas características anatômicas podem atuar na economia hídrica e ser, desta maneira, consideradas adaptações às condições de semiaridez da caatinga.<br<Water availability is the main limiting factor for plants in arid and semi-arid environments. In these plants, a combination of characteristics contributes to water economy, among them being anatomical features. Thus, studies in leaves of the quince (Croton blanchetianus) and the velame (Croton heliotropiifolius), two common species in the caatinga and of importance in beekeeping, were performed to verify adaptive anatomical characteristics which are related to a greater efficiency in water usage. The leaves of both species have a dense indumentum, the basal-cell walls of the trichomes are impregnated with lipids, and phenolic compounds are found in the epidermal and parenchymal cells. In plants from arid environments, the trichomes can help reduce heating and leaf transpiration and also prevent the apoplastic flow of water due to the presence of lipids in the walls of the basal cells. These anatomical features may act on the water economy, and can thus be considered as adaptations to the semi-arid conditions of the caatinga.
abstractGer	A disponibilidade de água é o principal fator limitante para as espécies vegetais em ambientes áridos e semiáridos. Nessas plantas, uma combinação de características contribui para a economia hídrica, entre elas as anatômicas. Assim, estudos em folhas de marmeleiro (Croton blanchetianus) e velame (Croton heliotropiifolius), duas espécies comuns na caatinga e de importância apícola, foram realizados para verificar as características anatômicas adaptativas relacionadas à maior eficiência na utilização de água. As folhas de ambas as espécies possuem indumento denso, parede das células basais dos tricomas impregnadas com lipídios e compostos fenólicos nas células epidérmicas e parenquimáticas. Em plantas de ambientes áridos, os tricomas podem ajudar a reduzir o aquecimento e a transpiração foliar e também impedir o fluxo apoplástico da água devido à presença de lipídios nas paredes das células basais. Estas características anatômicas podem atuar na economia hídrica e ser, desta maneira, consideradas adaptações às condições de semiaridez da caatinga.<br<Water availability is the main limiting factor for plants in arid and semi-arid environments. In these plants, a combination of characteristics contributes to water economy, among them being anatomical features. Thus, studies in leaves of the quince (Croton blanchetianus) and the velame (Croton heliotropiifolius), two common species in the caatinga and of importance in beekeeping, were performed to verify adaptive anatomical characteristics which are related to a greater efficiency in water usage. The leaves of both species have a dense indumentum, the basal-cell walls of the trichomes are impregnated with lipids, and phenolic compounds are found in the epidermal and parenchymal cells. In plants from arid environments, the trichomes can help reduce heating and leaf transpiration and also prevent the apoplastic flow of water due to the presence of lipids in the walls of the basal cells. These anatomical features may act on the water economy, and can thus be considered as adaptations to the semi-arid conditions of the caatinga.
abstract_unstemmed	A disponibilidade de água é o principal fator limitante para as espécies vegetais em ambientes áridos e semiáridos. Nessas plantas, uma combinação de características contribui para a economia hídrica, entre elas as anatômicas. Assim, estudos em folhas de marmeleiro (Croton blanchetianus) e velame (Croton heliotropiifolius), duas espécies comuns na caatinga e de importância apícola, foram realizados para verificar as características anatômicas adaptativas relacionadas à maior eficiência na utilização de água. As folhas de ambas as espécies possuem indumento denso, parede das células basais dos tricomas impregnadas com lipídios e compostos fenólicos nas células epidérmicas e parenquimáticas. Em plantas de ambientes áridos, os tricomas podem ajudar a reduzir o aquecimento e a transpiração foliar e também impedir o fluxo apoplástico da água devido à presença de lipídios nas paredes das células basais. Estas características anatômicas podem atuar na economia hídrica e ser, desta maneira, consideradas adaptações às condições de semiaridez da caatinga.<br<Water availability is the main limiting factor for plants in arid and semi-arid environments. In these plants, a combination of characteristics contributes to water economy, among them being anatomical features. Thus, studies in leaves of the quince (Croton blanchetianus) and the velame (Croton heliotropiifolius), two common species in the caatinga and of importance in beekeeping, were performed to verify adaptive anatomical characteristics which are related to a greater efficiency in water usage. The leaves of both species have a dense indumentum, the basal-cell walls of the trichomes are impregnated with lipids, and phenolic compounds are found in the epidermal and parenchymal cells. In plants from arid environments, the trichomes can help reduce heating and leaf transpiration and also prevent the apoplastic flow of water due to the presence of lipids in the walls of the basal cells. These anatomical features may act on the water economy, and can thus be considered as adaptations to the semi-arid conditions of the caatinga.
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title_short	Adaptações anatômicas em folhas de marmeleiro e velame da caatinga brasileira Anatomical adaptations in leaves of the quince and velame of the Brazilian caatinga
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Adaptações anatômicas em folhas de marmeleiro e velame da caatinga brasileira Anatomical adaptations in leaves of the quince and velame of the Brazilian caatinga

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