Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/39896
Título: Growth of Typha domingensis as related to leaf physiological and anatomical modifications under drought conditions
Palavras-chave: Typha domingensis
Applied botany
Water availability
Stomatal density
Water potential
Botânica aplicada
Disponibilidade de água
Densidade estomática
Potencial hídrico
Data do documento: 2019
Editor: Springer Nature
Citação: CRUZ, Y. da C.; SCARPA, A. L. M.; PEREIRA, M. P.; CASTRO, E. M. de; PEREIRA, F. J. Growth of Typha domingensis as related to leaf physiological and anatomical modifications under drought conditions. Acta Physiologiae Plantarum, [S. l.], v. 41, p. 1-9, 2019. DOI: https://doi.org/10.1007/s11738-019-2858-1.
Resumo: Global climate change may lead to reduced water supply to terrestrial environments owing to diminished rainfall. Wetlands are no exception, and macrophytes growing in these ecosystems may experience severe droughts. However, some macrophytes, such as Typha domingensis, can be found on partially dry sites. This study aimed to examine the mechanisms by which T. domingensis survives in dry sites. We examined whether water deficiency reduced the growth capacity of individual T. domingensis plants and the T. domingensis population. We hypothesized that T. domingensis can overcome some level of water deficiency by adjusting physiological parameters related to leaf anatomy, such as transpiration, photosynthesis, and water use efficiency. We evaluated the effects of drought on growth, leaf anatomy, gas exchange, and water potential of T. domingensis under controlled greenhouse conditions at different water availability levels. Waterlogged and field capacity treatments had similar effects on growth, water potential, and net photosynthesis. Population growth was inhibited at 50% and 25% of field capacity water availability. Drought resulted in reductions in photosynthesis, leaf area, water potential, stomatal density, and thickness of the palisade parenchyma. Therefore, although T. domingensis can cope with mild drought stress, the decrease in functional leaf area eventually limits plant growth under severe drought conditions.
URI: https://link.springer.com/article/10.1007/s11738-019-2858-1
http://repositorio.ufla.br/jspui/handle/1/39896
Aparece nas coleções:DBI - Artigos publicados em periódicos

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