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Reversible in vivo cellular changes occur during desiccation and recovery: Desiccation tolerance of the resurrection filmy fern Hymenophyllum dentatum Cav. Gayana Botánica
Bravo,Soraya; Parra,María José; Castillo,Rosario; Sepúlveda,Francisco; Turner,Aileen; Bertín,Ariana; Osorio,Germán; Tereszczuk,Joanna; Bruna,Carola; Hasbún,Rodrigo.
ABSTRACT The present work explores in vivo physiological, morphological and chemical features during full hydration, desiccation and rehydration of the filmy fern Hymenophyllum dentatum with two main objectives: 1) to get further insight about the mechanisms underlying its desiccation tolerance, and 2) to understand how this plant manages mechanical stress induced by water loss and recovery. With these purposes, physiological (relative water content and F /F chlorophyll fluorescence parameter), morphological (Confocal Laser Scanning Microscopy and 3D reconstruction) and chemical (FT- IR microspectroscopy) data were obtained and compared between fully hydrated, desiccated and rehydrated tissues of H. dentatum. Remarkable changes in cell architecture and...
Tipo: Journal article Palavras-chave: Hymenophyllum; Desiccation tolerance; Confocal 3D microscopy; FT-IR microspectroscopy; Rapid dehydration/rehydration.
Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432016000200402
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