Stomatal frequency and gas exchange differs in two Blechnum species (Pteridophyta, Blechnaceae) with contrasting ecological breadth

In Chilean temperate forest, the fern Blechnum chilense has a wide ecological breath, but occur mainly in full sun habitats, while Blechnum mochaenum is restricted only to shady sites. We evaluated if the species with different ecological breath behave similarly in their anatomical and physiological...

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Autores principales:	Atala,Cristian, Saldaña,Alfredo, Navarrete,Eduardo
Lenguaje:	English
Publicado:	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción 2012
Materias:	Blechnum stomatal density stomatal index stomatal size gas exchange evergreen temperate forest
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432012000100016
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spelling	oai:scielo:S0717-664320120001000162014-03-10Stomatal frequency and gas exchange differs in two Blechnum species (Pteridophyta, Blechnaceae) with contrasting ecological breadthAtala,CristianSaldaña,AlfredoNavarrete,Eduardo Blechnum stomatal density stomatal index stomatal size gas exchange evergreen temperate forest In Chilean temperate forest, the fern Blechnum chilense has a wide ecological breath, but occur mainly in full sun habitats, while Blechnum mochaenum is restricted only to shady sites. We evaluated if the species with different ecological breath behave similarly in their anatomical and physiological traits. Maximal photosynthetic rate (Amax), Stomatal conductance (g s), evapotranspiration (E), and SLA (specific leaf area) were measured in situ in 20 individuals of each fern species. Additionally, we estimated the stomatal density (SD), stomatal index (SI), and stomatal size in leaves of each sampled individual. B. mochaenum, the shade-tolerant species, had lower SD, SI, A, and E, and higher stomatal size and SLA than B. chilense. Higher stomatal frequency could result in greater gas exchange in open sites for B. chilense. The leaf physiology of these fern species seems to depend partially on their stomatal traits.info:eu-repo/semantics/openAccessFacultad de Ciencias Naturales y Oceanográficas, Universidad de ConcepciónGayana. Botánica v.69 n.1 20122012-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432012000100016en10.4067/S0717-66432012000100016
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Blechnum stomatal density stomatal index stomatal size gas exchange evergreen temperate forest
spellingShingle	Blechnum stomatal density stomatal index stomatal size gas exchange evergreen temperate forest Atala,Cristian Saldaña,Alfredo Navarrete,Eduardo Stomatal frequency and gas exchange differs in two Blechnum species (Pteridophyta, Blechnaceae) with contrasting ecological breadth
description	In Chilean temperate forest, the fern Blechnum chilense has a wide ecological breath, but occur mainly in full sun habitats, while Blechnum mochaenum is restricted only to shady sites. We evaluated if the species with different ecological breath behave similarly in their anatomical and physiological traits. Maximal photosynthetic rate (Amax), Stomatal conductance (g s), evapotranspiration (E), and SLA (specific leaf area) were measured in situ in 20 individuals of each fern species. Additionally, we estimated the stomatal density (SD), stomatal index (SI), and stomatal size in leaves of each sampled individual. B. mochaenum, the shade-tolerant species, had lower SD, SI, A, and E, and higher stomatal size and SLA than B. chilense. Higher stomatal frequency could result in greater gas exchange in open sites for B. chilense. The leaf physiology of these fern species seems to depend partially on their stomatal traits.
author	Atala,Cristian Saldaña,Alfredo Navarrete,Eduardo
author_facet	Atala,Cristian Saldaña,Alfredo Navarrete,Eduardo
author_sort	Atala,Cristian
title	Stomatal frequency and gas exchange differs in two Blechnum species (Pteridophyta, Blechnaceae) with contrasting ecological breadth
title_short	Stomatal frequency and gas exchange differs in two Blechnum species (Pteridophyta, Blechnaceae) with contrasting ecological breadth
title_full	Stomatal frequency and gas exchange differs in two Blechnum species (Pteridophyta, Blechnaceae) with contrasting ecological breadth
title_fullStr	Stomatal frequency and gas exchange differs in two Blechnum species (Pteridophyta, Blechnaceae) with contrasting ecological breadth
title_full_unstemmed	Stomatal frequency and gas exchange differs in two Blechnum species (Pteridophyta, Blechnaceae) with contrasting ecological breadth
title_sort	stomatal frequency and gas exchange differs in two blechnum species (pteridophyta, blechnaceae) with contrasting ecological breadth
publisher	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432012000100016
work_keys_str_mv	AT atalacristian stomatalfrequencyandgasexchangediffersintwoblechnumspeciespteridophytablechnaceaewithcontrastingecologicalbreadth AT saldanaalfredo stomatalfrequencyandgasexchangediffersintwoblechnumspeciespteridophytablechnaceaewithcontrastingecologicalbreadth AT navarreteeduardo stomatalfrequencyandgasexchangediffersintwoblechnumspeciespteridophytablechnaceaewithcontrastingecologicalbreadth
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Stomatal frequency and gas exchange differs in two Blechnum species (Pteridophyta, Blechnaceae) with contrasting ecological breadth

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