Ecophysiological responses of homoiochlorophyllous and poikilochlorophyllous desiccation tolerant plants: A comparison and an ecological perspective

Z. Tuba, Michael C F Protor, Z. Csintalan

Research output: Contribution to journalArticle

106 Citations (Scopus)

Abstract

There is an apparently stark contrast in ecophysiological adaptation between the poikilochlorophyllous desiccation-tolerant (PDT) angiosperm Xerophyta scabrida and homoichlorophyllous desiccation-tolerant (HDT) lichens and bryophytes. We summarise measurements on Xerophyta and on the temperate dry-grassland lichen Cladonia convoluta and the moss Tortula ruralis through a cycle of desiccation and rehydration. Considered in a broad ecological and evolutionary context, desiccation tolerance in general can be seen as evading some of the usual problems of drought stress, and these plants as particular instances drawn from an essentially continuous spectrum of adaptive possibilities - related on the one hand to the physical scale of the plants, and on the other to the time-scale of wetting and drying episodes.

Original languageEnglish
Pages (from-to)211-217
Number of pages7
JournalPlant Growth Regulation
Volume24
Issue number3
DOIs
Publication statusPublished - 1998

Fingerprint

Desiccation
desiccation (plant physiology)
Bryophyta
Lichens
lichens
Angiosperms
Cladonia
Fluid Therapy
Droughts
rehydration
mosses and liverworts
Angiospermae
water stress
grasslands
drying

Keywords

  • Chlorophyll a+b
  • CO assimilation
  • Desiccation-tolerance mechanism
  • Ecological adaptation
  • Homoiochlorophyllous
  • Poikilochlorophyllous
  • Rehydration
  • Respiration
  • Resynthesis

ASJC Scopus subject areas

  • Plant Science

Cite this

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title = "Ecophysiological responses of homoiochlorophyllous and poikilochlorophyllous desiccation tolerant plants: A comparison and an ecological perspective",
abstract = "There is an apparently stark contrast in ecophysiological adaptation between the poikilochlorophyllous desiccation-tolerant (PDT) angiosperm Xerophyta scabrida and homoichlorophyllous desiccation-tolerant (HDT) lichens and bryophytes. We summarise measurements on Xerophyta and on the temperate dry-grassland lichen Cladonia convoluta and the moss Tortula ruralis through a cycle of desiccation and rehydration. Considered in a broad ecological and evolutionary context, desiccation tolerance in general can be seen as evading some of the usual problems of drought stress, and these plants as particular instances drawn from an essentially continuous spectrum of adaptive possibilities - related on the one hand to the physical scale of the plants, and on the other to the time-scale of wetting and drying episodes.",
keywords = "Chlorophyll a+b, CO assimilation, Desiccation-tolerance mechanism, Ecological adaptation, Homoiochlorophyllous, Poikilochlorophyllous, Rehydration, Respiration, Resynthesis",
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AU - Protor, Michael C F

AU - Csintalan, Z.

PY - 1998

Y1 - 1998

N2 - There is an apparently stark contrast in ecophysiological adaptation between the poikilochlorophyllous desiccation-tolerant (PDT) angiosperm Xerophyta scabrida and homoichlorophyllous desiccation-tolerant (HDT) lichens and bryophytes. We summarise measurements on Xerophyta and on the temperate dry-grassland lichen Cladonia convoluta and the moss Tortula ruralis through a cycle of desiccation and rehydration. Considered in a broad ecological and evolutionary context, desiccation tolerance in general can be seen as evading some of the usual problems of drought stress, and these plants as particular instances drawn from an essentially continuous spectrum of adaptive possibilities - related on the one hand to the physical scale of the plants, and on the other to the time-scale of wetting and drying episodes.

AB - There is an apparently stark contrast in ecophysiological adaptation between the poikilochlorophyllous desiccation-tolerant (PDT) angiosperm Xerophyta scabrida and homoichlorophyllous desiccation-tolerant (HDT) lichens and bryophytes. We summarise measurements on Xerophyta and on the temperate dry-grassland lichen Cladonia convoluta and the moss Tortula ruralis through a cycle of desiccation and rehydration. Considered in a broad ecological and evolutionary context, desiccation tolerance in general can be seen as evading some of the usual problems of drought stress, and these plants as particular instances drawn from an essentially continuous spectrum of adaptive possibilities - related on the one hand to the physical scale of the plants, and on the other to the time-scale of wetting and drying episodes.

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KW - CO assimilation

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KW - Ecological adaptation

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KW - Poikilochlorophyllous

KW - Rehydration

KW - Respiration

KW - Resynthesis

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