Gesneriads, a Source of Resurrection and Double-Tolerant Species: Proposal of New Desiccation- and Freezing-Tolerant Plants and Their Physiological Adaptations

Gesneriaceae is a pantropical family of plants that, thanks to their lithophytic and epiphytic growth forms, have developed different strategies for overcoming water scarcity. Desiccation tolerance or “resurrection” ability is one of them: a rare phenomenon among angiosperms that involves surviving...

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Main Authors: Ane Legardón, José Ignacio García-Plazaola
Format: Article
Language:English
Published: MDPI AG 2023-01-01
Series:Biology
Subjects:
Online Access:https://www.mdpi.com/2079-7737/12/1/107
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author Ane Legardón
José Ignacio García-Plazaola
author_facet Ane Legardón
José Ignacio García-Plazaola
author_sort Ane Legardón
collection DOAJ
description Gesneriaceae is a pantropical family of plants that, thanks to their lithophytic and epiphytic growth forms, have developed different strategies for overcoming water scarcity. Desiccation tolerance or “resurrection” ability is one of them: a rare phenomenon among angiosperms that involves surviving with very little relative water content in their tissues until water is again available. Physiological responses of desiccation tolerance are also activated during freezing temperatures, a stress that many of the resurrection gesneriads suffer due to their mountainous habitat. Therefore, research on desiccation- and freezing-tolerant gesneriads is a great opportunity for crop improvement, and some of them have become reference resurrection angiosperms (<i>Dorcoceras hygrometrica, Haberlea rhodopensis</i> and <i>Ramonda myconi</i>). However, their difficult indoor cultivation and outdoor accessibility are major obstacles for their study. Therefore, this review aims to identify phylogenetic, geoclimatic, habitat, and morphological features in order to propose new tentative resurrection gesneriads as a way of making them more reachable to the scientific community. Additionally, shared and species-specific physiological responses to desiccation and freezing stress have been gathered as a stress response metabolic basis of the family.
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spelling doaj.art-4d1c24588fb341a7afd8cfafcb2e0a0e2023-11-30T21:17:29ZengMDPI AGBiology2079-77372023-01-0112110710.3390/biology12010107Gesneriads, a Source of Resurrection and Double-Tolerant Species: Proposal of New Desiccation- and Freezing-Tolerant Plants and Their Physiological AdaptationsAne Legardón0José Ignacio García-Plazaola1Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, 48940 Leioa, SpainDepartment of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, 48940 Leioa, SpainGesneriaceae is a pantropical family of plants that, thanks to their lithophytic and epiphytic growth forms, have developed different strategies for overcoming water scarcity. Desiccation tolerance or “resurrection” ability is one of them: a rare phenomenon among angiosperms that involves surviving with very little relative water content in their tissues until water is again available. Physiological responses of desiccation tolerance are also activated during freezing temperatures, a stress that many of the resurrection gesneriads suffer due to their mountainous habitat. Therefore, research on desiccation- and freezing-tolerant gesneriads is a great opportunity for crop improvement, and some of them have become reference resurrection angiosperms (<i>Dorcoceras hygrometrica, Haberlea rhodopensis</i> and <i>Ramonda myconi</i>). However, their difficult indoor cultivation and outdoor accessibility are major obstacles for their study. Therefore, this review aims to identify phylogenetic, geoclimatic, habitat, and morphological features in order to propose new tentative resurrection gesneriads as a way of making them more reachable to the scientific community. Additionally, shared and species-specific physiological responses to desiccation and freezing stress have been gathered as a stress response metabolic basis of the family.https://www.mdpi.com/2079-7737/12/1/107resurrection speciesdesiccation tolerancefreezing stressGesneriaceaeoxidative stressstructural damage
spellingShingle Ane Legardón
José Ignacio García-Plazaola
Gesneriads, a Source of Resurrection and Double-Tolerant Species: Proposal of New Desiccation- and Freezing-Tolerant Plants and Their Physiological Adaptations
Biology
resurrection species
desiccation tolerance
freezing stress
Gesneriaceae
oxidative stress
structural damage
title Gesneriads, a Source of Resurrection and Double-Tolerant Species: Proposal of New Desiccation- and Freezing-Tolerant Plants and Their Physiological Adaptations
title_full Gesneriads, a Source of Resurrection and Double-Tolerant Species: Proposal of New Desiccation- and Freezing-Tolerant Plants and Their Physiological Adaptations
title_fullStr Gesneriads, a Source of Resurrection and Double-Tolerant Species: Proposal of New Desiccation- and Freezing-Tolerant Plants and Their Physiological Adaptations
title_full_unstemmed Gesneriads, a Source of Resurrection and Double-Tolerant Species: Proposal of New Desiccation- and Freezing-Tolerant Plants and Their Physiological Adaptations
title_short Gesneriads, a Source of Resurrection and Double-Tolerant Species: Proposal of New Desiccation- and Freezing-Tolerant Plants and Their Physiological Adaptations
title_sort gesneriads a source of resurrection and double tolerant species proposal of new desiccation and freezing tolerant plants and their physiological adaptations
topic resurrection species
desiccation tolerance
freezing stress
Gesneriaceae
oxidative stress
structural damage
url https://www.mdpi.com/2079-7737/12/1/107
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