Blattbau und Salzhaushalt vonLaguncularia racemosa (L)Gaertn. f. und anderer Mangroveb�ume auf Puerto Rico

Biebl, Richard; Kinzel, Helmut

doi:10.1007/bf01372978

Cited by 52 publications

(18 citation statements)

References 26 publications

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“…Chloride content per leaf area was highly correlated with water content per leaf area (Fig. 6) as has been described previously for herbaceous halophytes (Albert 1982) and mangroves (Biebl and Kinzel 1965;Poppet al 1993).…”

Section: Resultsmentioning

confidence: 69%

Solutes and succulence in southern African mistletoes

Popp

Mensen

Richter

et al. 1995

Trees

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Abstract.The inorganic ion and organic solute composition of Tapinanthus oleifolius (Loranthaceae) and Viscum rotundifolium (Viscaceae) growing on various host trees in Namibia were investigated. Organic osmolytes accounted for 22.8-45.1% of the total solutes determined in leaves of the mistletoes parasitizing Acacia nebrownii, Catophractes alexandri, Grewia flava and Ziziphus mucronata. On other hosts (Acacia karroo, Euphorbia virosa, Salvadora persica and Tamarix usneoides) 72. oleifolius showed distinct succulence with increasing leaf age, with leaves more than 3 mm thick on E. virosa. In the more succulent leaves ( > 1.1 kg H20 m-2 leaf area) organic solutes were only of minor importance. Water content per leaf area was significantly correlated with chloride content per leaf area, suggesting that succulence served as a means to keep ion concentration at a physiological tolerable level. At whole plant levels 93.7% of the total sodium of the mistletoe bush was located in leaves thicker than 1 mm for T. oleifolius parasitizing Tamarix usneoides. This pronounced sequestration of sodium in older leaves as well as the high variability of the K/Na ratio in various parts of the parasite-host system point to highly selective ion distribution processes in this association.

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Section: Resultsmentioning

confidence: 69%

Solutes and succulence in southern African mistletoes

Popp

Mensen

Richter

et al. 1995

Trees

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“…Like many other halophytes (Collander 1941;Takeda 1954;Black 1960;Scholander et al 1962Scholander et al , 1966Binet 1963;Greenway and Rogers 1963;Biebl and Kinzel 1965;Rickard 1965;Elzam 1966), shoot tissue of A. marina does not exclude salt but absorbs it in substantial amounts. On a dry basis, leaf tissue of seedlings used in this work contained 1· 0% potassium, 4·1 % sodium, and 7·5% chloride.…”

Section: (D) Adaptive Significancementioning

confidence: 96%

“…The picture was taken on Bathurst Head, N. Qld. Extensive associations of mangroves occur along the north-eastern shores of Australia (Macnae 1966) and elsewhere in the tropics fr \pman 1960; Scholander et al 1962Scholander et al , 1966Biebl and Kinzel 1965). Evidently, mangroves and other extremely halophytic plants possess a physiological competence most crop plants lack -the competence of coping with high levels of salt in their nutrient substrate.…”

Section: Introductionmentioning

confidence: 99%

Preferential Absorption of Potassium by Leaf Tissue of the Mangrove, Avicennia Marina: An Aspect of Halophytic Competence in Coping with Salt

Rains¹,

Epstein²

1967

Aust. Jnl. Of Bio. Sci.

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SummaryOne aspect of the salt tolerance of the mangrove, Avicennia marina, was investigated: the preferential absorption of potassium by leaf tissue in the presence of high concentrations of salt (sodium chloride). The rate of absorption of potassium, over the concentration range 0·02 to 1·5 mM, follows the Michaelis-Menten relation, approaching the theoretical maximum, V max, at 1· 5 mM. The apparent Michaelis constant is 0·20 mM. At higher concentrations, up to 50 mM potassium, the rate of potassium absorption reaches values several times higher than the theoretical maximum calculated on the basis of the relation applying over the low range of concentrations, indicating the operation of a second mechanism of absorption. At both low (1 mM) and high (10 mM) concentrations of potassium, its absorption was little affected by sodium chloride concentrations up to 200 mM. At 10 mM potassium, sodium chloride at concentrations up to and including 500 mM (more than its concentration in sea.water) failed to interfere with the absorption of potassium.~,,~,

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“…However, the salt secretory ability of these structures has not been precisely demonstrated. Biebl and Kinzel (1965) describe three morphologically different structures in the leaves of L. racemosa, the smallest of which sit in deep, irregular epidermal depressions and extrude chains of salt crystals. However, Kemis (1984) raised specimens of Conocarpus and observed them to secrete clear, sweettasting nectar.…”

Section: Morphological and Anatomical Featuresmentioning

confidence: 99%

Salt tolerance mechanisms in mangroves: a review

Parida

Jha

2010

Trees

330

230

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Mangroves are woody plants which form the dominant vegetation in tidal, saline wetlands along tropical and subtropical coasts. The current knowledge concerning the most striking feature of mangroves i.e., their unique ability to tolerate high salinity is summarized in the present review. In this review, we shall discuss recent studies that have focused on morphological, anatomical, physiological, biochemical, molecular and genetic attributes associated with the response to salinity, some of which presumably function to mediate salt tolerance in the mangroves. Here we shall also review the major advances recently made at both the genetic and the genomic levels in mangroves. Salinity tolerance in mangroves depends on a range of adaptations, including ion compartmentation, osmoregulation, selective transport and uptake of ions, maintenance of a balance between the supply of ions to the shoot, and capacity to accommodate the salt influx. The tolerance of mangroves to a high saline environment is also tightly linked to the regulation of gene expression. By integrating the information from mangroves and performing comparisons among species of mangroves and non-mangroves, we could give a general picture of salt tolerance mechanisms of mangroves, thus providing a new avenue for development of salt tolerance in crop plants through effective breeding strategies and genetic engineering techniques.

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Blattbau und Salzhaushalt vonLaguncularia racemosa (L)Gaertn. f. und anderer Mangroveb�ume auf Puerto Rico

Cited by 52 publications

References 26 publications

Solutes and succulence in southern African mistletoes

Solutes and succulence in southern African mistletoes

Preferential Absorption of Potassium by Leaf Tissue of the Mangrove, Avicennia Marina: An Aspect of Halophytic Competence in Coping with Salt

Salt tolerance mechanisms in mangroves: a review

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