Differential response of salt-marsh species to variation of iron and manganese

Rozema, J.; Luppes, E.; Broekman, Rob

doi:10.1007/978-94-009-5524-0_33

Cited by 21 publications

(11 citation statements)

References 13 publications

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“…The subsequent oxidation creates clearly visible iron oxide and hydroxide precipitations on the roots (Groenewege 1922;Molisch 1926;van Raalte 1944;Armstrong 1967). A high and efficient ROL is said to slow down iron uptake, and to help prevent iron toxicity in the shoot (Tanaka et al 1966;Martin 1968;Armstrong 1978Armstrong , 1979; van Breemen & Moormann 1978;Yoshida & Tadano 1978;Ottow et al 1982;Rozema et al 1985;Iremonger & Kelly 1988). It has also been suggested, however, that iron plaque formation and iron oxide precipitations in the rhizosphere might hinder the uptake of essential nutrients (Howeler 1973;Benckiser et al 1984;Wheeler et al 1985;Otte et al 1989),and in this respect ROL could be a disadvantage for the nutrient supply ofthe plant.…”

Section: Introductionmentioning

confidence: 91%

The relative roles of internal aeration, radial oxygen losses, iron exclusion and nutrient balances in flood-tolerance ofRumexspecies

Laan

Smolders

Blom

et al. 1989

Acta Botanica Neerlandica

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Radial oxygen losses (ROL) from the roots of three Rumex species, that occur in the river ecosystem in The Netherlands and show a differential response towards flooding, were compared. Oxygen loss from whole root systems was demonstrated and the ROL of single roots was quantified. Radial oxygen losses were higher in the floodtolerant R. maritimus and R. crispus than in the intolerant R. thyrsiflorus. In all species oxygen loss occurred over the whole root surface between the base and the apex, but the rates differed as well as root wall permeabilities to oxygen. High oxygen losses in R. maritimus and R. crispus were correlated with high internal oxygen pressures near the root apex, consistent with prolonged root growth under anaerobic conditions in these species. On a flooded clay soil, the more tolerant species showed soil penetration and iron oxidation to greater depths, but all species developed an iron plaque on the roots. Shoot iron content was highest in the flood-tolerant R. maritimus. Upon flooding of the flood-intolerant R. thyrsiflorus, however, there was a substantial decrease in shoot dry weight and tissue nutrient levels. This was attributed to restricted root development rather than to iron toxicity. toxicity.

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Section: Introductionmentioning

confidence: 91%

The relative roles of internal aeration, radial oxygen losses, iron exclusion and nutrient balances in flood-tolerance ofRumexspecies

Laan

Smolders

Blom

et al. 1989

Acta Botanica Neerlandica

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“…We may emphasize that Ca and Mg concentrations in photosynthetic tissues were also lower in SD than in AM; moreover, Mn concentrations in belowground biomass of AM were higher than in that of SD, suggesting different root Mn exclusion and capacity to oxidize the rizosphere sediments (Rozema et al 1985). These trends suggest that SD differs from AM regarding the use of available nutrients, with implications for its competitive ability.…”

Section: Nutrient Concentrationsmentioning

confidence: 92%

Comparison of Biomass and Nutrient Dynamics Between an Invasive and a Native Species in a Mediterranean Saltmarsh

et al. 2010

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Two saltmarsh species, the native Arthrocnemum macrostachyum (AM) and the invasive Spartina densiflora (SD), were compared in terms of monthly variation of above and belowground biomass, and nutrient (N, P, K, Ca, Mg, Mn) concentrations, over 1 year, in Castro Marim saltmarsh, Portugal. Net aboveground primary productivity was also estimated by two different methods. Above and belowground biomass were higher in SD than in AM and there were distinct monthly variations in the two species. Maximum relative growth rate was observed in the October/January period for SD (4.92±0.36 mg g-1 day-1) and in April/July for AM (3.37±1.26 mg g-1 day-1). Whatever the method used, net aboveground primary productivity was higher in SD (2,603 and 2,923 g m-2 yr-1, respectively by the Smalley and the Wiegert and Evans method) than in AM (692 and 1,012 g m-2 yr-1, respectively). The turnover rate for aboveground live biomass of AM was half the value of SD (0.8 yr-1 and 1.7 yr-1, respectively). The N/P ratio in photosynthetic active components and belowground biomass of AM (11 and 13) was higher than in those of SD (7 and 10). Concentrations of K, Ca and Mg in photosynthetic tissues of SD were lower than in AM. Differences observed between study species suggest that S. densiflora has better ability to use resources and to compete with native species.

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“…Salt marsh habitats, however, are also characterized by a surplus of other inorganic compounds, as emphasized in this symposium (Havill et al, 1985;Rozema et al, 1985;Singer & HaviU, 1985). It is better to produce a specific metabolite such as /3-dimethylsulphoniopropionate (Dickson et al, 1980) as detoxifying agent for a surplus of sulphur in coastal habitats?…”

Section: Ecophysiologymentioning

confidence: 99%

“…Does this result mean that a variation of manganese efficiency (De Neeling, 1982;Ernst, 1983b;van Baalen et aL, 1983) is widespread in natural populations? Is genotypic variability within each population sufficiently considered in the discussion of manganese surplus in this symposium (Singer & Havill, 1985;Rozema et al, 1985)?…”

Section: Omentioning

confidence: 99%

“…At the moment there is a great difference in approach; one group stresses common strategies (Grime, 1979;partly Ellenberg, 1974), an other emphasizes niche differentiation (Levins, 1968;G rubb, 1977). Next to some basic adaptations such as those to salt in halophytes, a possibly common strategy although not in the sense of Grime (1982), niche differentiation is necessary and present in vegetation of coastal areas (Ernst, 1983a, c;Rozema et al, 1985). A comparison of many species within one community demonstrates that common strategies and special adaptations are necessary for survival in a real plant community.…”

Section: Vegetationmentioning

confidence: 99%

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Some considerations of and perspectives in coastal ecology

Ernst

1985

Vegetatio

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Ecophysiological studies of plant species in wet saline habitats have been one-sided in the past, emphasizing sodium chloride only. More emphasis should be given to anaerobiosis, to mechanical factors, to the effects of a surplus of other nutrients in seawater and coastal ecosystems and their metabolic impact as well as to aspects of nutrient (re)allocation. Research should incorporate theoretical models on plant strategies (maximizing yield, minimizing risk). At the population level, a new operational parameter for ecological optima and ecological stress is presented considering normal and skewed distributions of plant parameters in relation to growth and the concentration of mineral nutrients.Some considerations on the ecological effects of phenotypic plasticity and genetic variability are given by emphasizing the aspects of diaspores.Future investigations of coastal vegetation should consider the interaction of populations within plant communities, including the regulating effects of animals.

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Differential response of salt-marsh species to variation of iron and manganese

Cited by 21 publications

References 13 publications

The relative roles of internal aeration, radial oxygen losses, iron exclusion and nutrient balances in flood-tolerance ofRumexspecies

The relative roles of internal aeration, radial oxygen losses, iron exclusion and nutrient balances in flood-tolerance ofRumexspecies

Comparison of Biomass and Nutrient Dynamics Between an Invasive and a Native Species in a Mediterranean Saltmarsh

Some considerations of and perspectives in coastal ecology

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