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Publication Type J
Authors Caperta, A. D., A. S. Rois, G. Teixeira, P. Garcia-Caparros and T. J. Flowers
Title Secretory structures in plants: lessons from the Plumbaginaceae on their origin, evolution and roles in stress tolerance
Source Plant Cell and Environment
Author Keywords anatomy halophytes phylogenetic analysis physiology salt glands salt-glands limonium plumbaginaceae ultrastructural features molecular phylogenetics electron-microscopy tamarix-africana ion-transport leaf anatomy maritima caryophyllales
Abstract The Plumbaginaceae (non-core Caryophyllales) is a family well known for species adapted to a wide range of arid and saline habitats. Of its salt-tolerant species, at least 45 are in the genusLimonium; two in each ofAegialitis,LimoniastrumandMyriolimon, and one each inPsylliostachys,Armeria,Ceratostigma,GoniolimonandPlumbago. All the halophytic members of the family have salt glands, which are also common in the closely related Tamaricaceae and Frankeniaceae. The halophytic species of the three families can secrete a range of ions (Na+, K+, Ca2+, Mg2+, Cl-, HCO3-, SO42-) and other elements (As, Cd, Cr, Cu, Fe, Mn, Ni, Pb and Zn). Salt glands are, however, absent in salt-tolerant members of the sister family Polygonaceae. We describe the structure of the salt glands in the three families and consider whether glands might have arisen as a means to avoid the toxicity of Na(+)and/or Cl(-)or to regulate Ca(2+)concentrations within the leaves. We conclude that the establishment of lineages with salt glands took place after the split between the Polygonaceae and its sister group the Plumbaginaceae.
Author Address [Caperta, Ana D.; Rois, Ana S.] Univ Lisbon, Inst Super Agron ISA, Linking Landscape Environm Agr & Food LEAF, Lisbon, Portugal. [Rois, Ana S.] Univ Lusofona Humanidades & Tecnol ULHT, Sch Psychol & Life Sci, Lisbon, Portugal. [Teixeira, Generosa] Univ Lisbon, Fac Ciencias, Ctr Ecol Evolut & Environm Changes CE3C, Lisbon, Portugal. [Teixeira, Generosa] Univ Lisbon, Fac Farm, Lisbon, Portugal. [Garcia-Caparros, Pedro] Univ Almeria, Super Sch Engn, CIAIMBITAL, Agron Dept,Agrifood Campus Int Excellence CeiA3, Almeria, Spain. [Flowers, Timothy J.] Univ Sussex, Sch Life Sci, Brighton BN1 9QG, E Sussex, England. Flowers, TJ (corresponding author), Univ Sussex, Sch Life Sci, Brighton BN1 9QG, E Sussex, England. t.j.flowers@sussex.ac.uk
ISSN 0140-7791
ISBN 0140-7791
29-Character Source Abbreviation Plant Cell Environ.
Digital Object Identifier (DOI) 10.1111/pce.13825
Unique Article Identifier WOS:000559482500001

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