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Evolution of halophytes: multiple origins of salt tolerance in land plants

Evolution of halophytes: multiple origins of salt tolerance in land plants The evolution of salt tolerance is interesting for several reasons. First, since salt-tolerant plants (halophytes) employ several different mechanisms to deal with salt, the evolution of salt tolerance represents a fascinating case study in the evolution of a complex trait. Second, the diversity of mechanisms employed by halophytes, based on processes common to all plants, sheds light on the way that a plant’s physiology can become adapted to deal with extreme conditions. Third, as the amount of salt-affected land increases around the globe, understanding the origins of the diversity of halophytes should provide a basis for the use of novel species in bioremediation and conservation. In this review we pose the question, how many times has salt tolerance evolved since the emergence of the land plants some 450–470 million years ago? We summarise the physiological mechanisms underlying salt-tolerance and provide an overview of the number and diversity of salt-tolerant terrestrial angiosperms (defined as plants that survive to complete their life cycle in at least 200 mM salt). We consider the evolution of halophytes using information from fossils and phylogenies. Finally, we discuss the potential for halophytes to contribute to agriculture and land management and ask why, when there are naturally occurring halophytes, it is proving to be difficult to breed salt-tolerant crops. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Functional Plant Biology CSIRO Publishing

Evolution of halophytes: multiple origins of salt tolerance in land plants

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Publisher
CSIRO Publishing
Copyright
CSIRO
ISSN
1445-4408
eISSN
1445-4416
DOI
10.1071/FP09269
Publisher site
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Abstract

The evolution of salt tolerance is interesting for several reasons. First, since salt-tolerant plants (halophytes) employ several different mechanisms to deal with salt, the evolution of salt tolerance represents a fascinating case study in the evolution of a complex trait. Second, the diversity of mechanisms employed by halophytes, based on processes common to all plants, sheds light on the way that a plant’s physiology can become adapted to deal with extreme conditions. Third, as the amount of salt-affected land increases around the globe, understanding the origins of the diversity of halophytes should provide a basis for the use of novel species in bioremediation and conservation. In this review we pose the question, how many times has salt tolerance evolved since the emergence of the land plants some 450–470 million years ago? We summarise the physiological mechanisms underlying salt-tolerance and provide an overview of the number and diversity of salt-tolerant terrestrial angiosperms (defined as plants that survive to complete their life cycle in at least 200 mM salt). We consider the evolution of halophytes using information from fossils and phylogenies. Finally, we discuss the potential for halophytes to contribute to agriculture and land management and ask why, when there are naturally occurring halophytes, it is proving to be difficult to breed salt-tolerant crops.

Journal

Functional Plant Biology – CSIRO Publishing

Published: Jul 2, 2010

Keywords: phylogeny, saline agriculture, salinity.

References

  • Occurrence of bryophytes on British salt marshes.
    Adam P
  • Towards the production of salt-tolerant crops.
    Barkla BJ
  • Restoration of saline land through revegetation.
    Barrett-Lennard EG
  • Streptophyte algae and the origin of embryophytes.
    Becker B
  • Molecular cloning and characterization of a sodium-pump ATPase of the moss Physcomitrella patens .
    Benito B
  • Osmotic acclimation and turgor pressure regulation in algae.
    Bisson MA
  • Ussing’s conundrum and the search for transport mechanisms in plants.
    Britto DT
  • Comparison of the role of two Spartina species in terms of phytostabilization and bioaccumulation of metals in the estuarine sediment.
    Cambrolle J
  • Effects of pasture cover on soil erosion and water quality on central Queensland coal mine rehabilitation.
    Carroll C
  • Yellowstone hot spring environments and the paleo-ecophysiology of Rhynie chert plants: towards a synthesis.
    Channing A
  • Flooding tolerance in halophytes.
    Colmer TD
  • Flooding tolerance: suites of plant traits in variable environments.
    Colmer TD
  • Improving salt tolerance of wheat and barley: future prospects.
    Colmer TD
  • Multiple origins of crassulacean acid metabolism and the epiphytic habit in the neotropical family Bromeliaceae.
    Crayn DM
  • Physiology of halophytes.
    Flowers TJ
  • Improving crop salt tolerance.
    Flowers TJ
  • Salinity tolerance in halophytes.
    Flowers TJ
  • Why does salinity pose such a difficult problem for plant breeders?
    Flowers TJ
  • Breeding for salinity resistance in crop plants – where next.
    Flowers TJ
  • The mechanism of salt tolerance in halophytes.
    Flowers TJ
  • Halophytes.
    Flowers TJ
  • Salt sensitivity in chickpea.
    Flowers TJ
  • Community level engineering effects of Triglochin maritima (seaside arrowgrass) in a salt marsh in northern New England, USA.
    Fogel BN
  • Distribution and salinity tolerance of intertidal mosses from Nova Scotian salt marshes.
    Garbary DJ
  • Plant cells express several stress calcium ATPases but apparently no sodium ATPase.
    Garciadeblas B
  • Cloning of two SOS1 transporters from the seagrass Cymodocea nodosa . SOS1 transporters from Cymodocea and Arabidopsis mediate potassium uptake in bacteria.
    Garciadeblás B
  • Salicornia-bigelovii Torr – an oilseed halophyte for seawater irrigation.
    Glenn EP
  • Life on land in the Precambrian.
    Horodyski RJ
  • Comparative mapping of HKT genes in wheat, barley, and rice, key determinants of Na+ transport, and salt tolerance.
    Huang S
  • Salt-regulated mannitol metabolism in algae.
    Iwamoto K
  • Physiological characterization of two genes for Na+ exclusion in durum wheat, Nax1 and Nax2 .
    James RA
  • Genetic variation in tolerance to the osmotic stress component of salinity stress in durum wheat.
    James RA
  • The origin and early evolution of plants on land.
    Kenrick P
  • Salt stimulation and tolerance in an intertidal stem-succulent halophyte.
    Khan MA
  • Nonnutrient anthropogenic chemicals in seagrass ecosystems: fate and effects.
    Lewis MA
  • Green algae and the origin of land plants.
    Lewis LA
  • Exclusion of Na + via sodium
    Lunde C
  • Batis maritima (Saltwort/Beachwort): a nutritious, halophytic, seed bearings, perennial shrub for cultivation and recovery of otherwise unproductive agricultural land affected by salinity.
    Marcone MF
  • Biosaline agriculture for forage and livestock production.
    Masters DG
  • Genes and salt tolerance: bringing them together.
    Munns R
  • Mechanisms of salinity tolerance.
    Munns R
  • Avenues for increasing salt tolerance of crops, and the role of physiologically based selection traits.
    Munns R
  • Approaches to increasing the salt tolerance of wheat and other cereals.
    Munns R
  • Conservation through utilization: a case study of the indigenous forage grasses of the Arabian Peninsula.
    Peacock JM
  • Productivity enhancement of salt-affected environments through crop diversification.
    Qadir M
  • Paleontological and isotope evidence for warm saline deep waters in ordovician oceans.
    Railsback LB
  • Effects of salinity and benzyl adenine on development and function of microhairs of Zea mays L.
    Ramadan T
  • Roots: evolutionary origins and biogeochemical significance.
    Raven JA
  • Salvadora persica , a potential species for industrial oil production in semiarid saline and alkali soils.
    Reddy MP
  • High-affinity potassium and sodium transport systems in plants.
    Rodriguez-Navarro A
  • Crops for a salinized world.
    Rozema J
  • Kosteletzkya virginica , an agroecoengineering halophytic species for alternative agricultural production in China’s east coast: ecological adaptation and benefits, seed yield, oil content, fatty acid and biodiesel properties.
    Ruan CJ
  • The evolution of C 4 photosynthesis.
    Sage RF
  • Molecular data from 27 proteins do not support a Precambrian origin of land plants.
    Sanderson MJ
  • Seagrass-salinity interactions: physiological mechanisms used by submersed marine angiosperms for a life at sea.
    Touchette BW
  • Secreting glandular trichomes – more than just hairs.
    Wagner GJ
  • New approaches for studying and exploiting an old protuberance, the plant trichome.
    Wagner GJ
  • Molecular adaptation and the origin of land plants.
    Waters ER
  • Metal uptake, transport and release by wetland plants: implications for phytoremediation and restoration.
    Weis JS
  • The microfossil record of early land plants.
    Wellman CH
  • Breeding for abiotic stresses for sustainable agriculture.
    Witcombe JR
  • Salinity resistance: physiologies and prices.
    Yeo AR
  • The contribution of an apoplastic pathway to sodium uptake by rice roots in saline conditions.
    Yeo AR
  • Screening of rice ( Oryza sativa L.) genotypes for physiological characters contributing to salinity resistance, and their relationship to overall performance.
    Yeo AR