POPULATION VARIATION AND TAXONOMY IN <i>ARMERIA MARITIMA</i> WITH SPECIAL REFERENCE TO HEAVY‐METAL‐TOLERANT POPULATIONS

Lefebvre, Christian

doi:10.1111/j.1469-8137.1974.tb04620.x

Cited by 31 publications

(23 citation statements)

References 9 publications

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“…Similarly, A. maritima ssp. intermedia populations, which are morphologically intermediate between the salt-marsh and the sandysoil ecotypes, can be found in moderately saline microhabitats on the coastline of the Baltic Sea (Lefebvre, 1974). The capacity of inland populations to grow on slightly saline parts of the salt marsh might have been critical for the evolution of salttolerant populations within this species: it would have provided a source of seeds from which a selection of more salt-resistant mutants could have taken place in the salt marsh.…”

Section: Characterization Of Salt Resistancementioning

confidence: 99%

The effect of NaCl on growth, dry matter allocation and ion uptake in salt marsh and inland populations of Armeria maritima

Köhl

1997

New Phytologist

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SUMMARYSalt resistance was compared in populations oi Armeria maritima (Mill.) Willd. from salt marshes and from inland sites to investigate which salt-resistance-related traits are present in all populations and which are derived traits of the salt-marsh ecotype. Plants were raised from seeds from six different populations and grown on a mixture of sand and ion-exchange resin at difTerent salinity levels. Inland populations grew better at 40 mM NaCl than with salt-free treatment and survived several months at 200 mM NaCl, and were thus as salt-resistant as many species from brackish habitats. Salt-marsh populations were as salt-resistant as euhalophytes. Growth enhancement by NaCl was related to an increase in shoot:root d. wt ratio, which was shown not to be the result of damage to the roots. Carbon allocation to roots seemed to be reduced as a consequence of a better nutrient supply at elevated NaCl concentrations. In plants from all populations, tissue tolerance of sodium and chloride (500-1000 mmol kg"^ d. wt) was higher than that in glycophytes. Na substituted for K and to some extent Ca and Mg without growth reduction. Betaines were accumulated as cytoplasmic compatible solutes by all populations, whereas proline accumulation was not involved in adjustment to long-term salt stress. The halophytic capacity to load the xylem with Na was found in all populations of A. maritima. However, the allocation of Na to the shoot started at higher salinities in inland populations than in salt-marsh populations. This was presumably due to the Na storage capacity of roots of inland populations being higher than that of coastal populations. Nevertheless, the inland populations of ^. maritima were significantly salt-tolerant as a consequence of their capacity to accumulate betaines and allocate Na to the shoot; this might have facilitated the colonization of salt marshes by the species.

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Section: Characterization Of Salt Resistancementioning

confidence: 99%

The effect of NaCl on growth, dry matter allocation and ion uptake in salt marsh and inland populations of Armeria maritima

Köhl

1997

New Phytologist

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“…This feedback system seems essential for the survival of the evergreen and perennial A. maritima in salt marshes during the winter and was presumably selected during the evolution of the salt-marsh eeotype of this speeies. The character might have been transferred to some of the heavy-metal populations, which are believed to have originated from a hybrid group between salt-marsh and sandy-soil populations (Lefebvre 1974;Kohl 1997). Indeed, the heavy-metal population Hs that morphologically most closely resembles the salt-marsh ecotype showed a lower Na aecumulation than the other inland populations.…”

Section: Osmotic Adjustment and Compatible Solutesmentioning

confidence: 99%

“…As closely related but geographically isolated populations of A. marititna are found on non-saline inland sites in Central Europe, for example on sandy soils (ssp. eiotigata, Tutin et al 1972) and on soils rich in heavy metals (Lefebvre 1974), the species offers the opportunity to study the evolution of this combined stress resistance.…”

Section: Introductionmentioning

confidence: 99%

NaCl homoeostasis as a factor for the survival of the evergreen halophyte Armeria maritima (Mill.) Willd. under salt stress in winter

Köhl

1997

Plant Cell & Environment

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The combination of NaCl and low temperature stress makes winter a critical time for evergreen halophytes at temperate latitudes. As part of a study of ecotypic differentiation of the evergreen Armeria maritima (Mill.) Willd., inland and salt‐marsh populations were compared with respect to their growth and survival, osmotic adjustment and NaCl concentrations (based on dry weight) under salt stress in pot experiments in winter. Increased leaf necrosis in all populations under salt stress indicated a higher NaCl sensitivity in winter than in summer. Plants from inland populations were more sensitive than salt‐marsh populations. Inland and salt‐marsh populations showed similar capacities for seasonal osmotic adjustment, high seasonal increase of praline concentration and long‐term betaine accumulation. Inland and salt‐marsh populations allocated Na and Cl preferentially to the shoot. In inland populations, Na and Cl accumulated to high concentrations in leaves, whereas the much lower NaCl concentration in salt‐marsh populations suggested that in these plants, Na uptake was regulated to match the growth‐dependent ion demand of the shoot. The prevention of NaCl accumulation in times of slow growth by a NaCl homoeostasis system seemed to be an important adaptation with respect to the survival of evergreen plants in salt marshes.

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“…Since the population samples already tested have shown no departure from the theoretical 50:50 ratio (Lefebvre, 1973) it can be inferred that they are completely outbred. These data were obtained from plants growing in high density on the mine, which is the commonest situation.…”

Section: Potential Self-fertility and The Functioning Of The Breedingmentioning

confidence: 99%

“…Metallicolous populations of Armeria maritima are polymorphic for some morphological characteristics (Lefebvre, 1974) amongst which hairiness of flower stalk is the most striking. Individuals in the same population may have hairy or glabrous stalks.…”

Section: Population Structurementioning

confidence: 99%

BREEDING SYSTEM AND POPULATION STRUCTURE OF ARMERIA MARITIMA (MILL.) WILLD. ON A ZINC‐LEAD MINE

Lefebvre¹

1976

New Phytologist

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SUMMARYUsing marker genes the breeding system (mating type gene) and the structure (hairy stalk gene) of a zinc-lead mine population of Armeria marititna, an insect-pollinated plant, was studied i?t situ. Strict allogamy oeeurs in the population in nature although this population shows selffertility in experimental garden plots. The population is divided into sulj-populations differing in the frequency of hairy stalked individuals. Gene flow between these sub-populations is very low (if any) so that the differences, which are likely to have originated by ehance, remain eonstant through generations.

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POPULATION VARIATION AND TAXONOMY IN ARMERIA MARITIMA WITH SPECIAL REFERENCE TO HEAVY‐METAL‐TOLERANT POPULATIONS

Cited by 31 publications

References 9 publications

The effect of NaCl on growth, dry matter allocation and ion uptake in salt marsh and inland populations of Armeria maritima

The effect of NaCl on growth, dry matter allocation and ion uptake in salt marsh and inland populations of Armeria maritima

NaCl homoeostasis as a factor for the survival of the evergreen halophyte Armeria maritima (Mill.) Willd. under salt stress in winter

BREEDING SYSTEM AND POPULATION STRUCTURE OF ARMERIA MARITIMA (MILL.) WILLD. ON A ZINC‐LEAD MINE

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