Aluminum-induced growth stimulation in relation to calcium, magnesium, and silicate nutrition in<i>Melastoma malabathricum</i>L.

Watanabe, Toshihiro; Osaki, Mitsuru; Tadano, Toshiaki

doi:10.1080/00380768.1997.10414649

Cited by 57 publications

(36 citation statements)

References 28 publications

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“…Interactions of Al at the plasma membranes can modify the structure of these membranes as well as the ionic environment near the surface of the cells (Kochian et al 2005). These results For tropical tree species, see reports by Osaki et al (1997), Watanabe et al (1997), Nguyen et al (2003), Kojima (2004), and Tahara et al 1995). Under this view, the molar ratio of Ca/Al of the roots of forest trees has been proposed as a tree indicator of Al stress (Meiwes et al 1986;Cronan and Grigal 1995;Bakker 1999).…”

Section: Root Nutrientsmentioning

confidence: 57%

“…In tropical tree species such as Melastoma malabathricum, the enhancement in the Al stimulation in the root biomass was confi rmed by a comparison with the inhibition of barley (Hordeum vulgare) seedlings as control plants Watanabe et al , 2005. Detailed information on the root response of tropical Asian tree species to acidic soils, including the Al tolerance, is provided in the reviews of Osaki et al (1997), Watanabe et al (1997), and Kojima (2004).…”

Section: Root Biomassmentioning

confidence: 95%

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Root parameters of forest trees as sensitive indicators of acidifying pollutants: a review of research of Japanese forest trees

Hirano

Mizoguchi

Brunner

2007

Journal of Forest Research

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The root parameters of forest trees can be indicators of a changing environment. We summarize the results of root studies with regard to the effects of acidifying pollutants, especially soil acidifi cation and aluminum toxicity, on various root parameters of Japanese forest trees under experimentally controlled conditions. All root parameters such as biomass, morphology, nutritional status, and physiology can be regarded as indicators, because, under laboratory conditions, root responses occur prior to the responses in the aboveground parts. However, considering the conditions of forest sites, the nutritional status and physiological changes are better indicators of soil acidifi cation and Al stress than the biomass and morphological response. The currently available data suggest that the most important indicator is the Ca/Al molar ratio in roots of Japanese tree species. In order to predict and detect the initial effects of soil acidifi cation, we postulate that the specifi c root response to the Ca/Al molar ratio of tree roots should be considered as a parameter for use in long-term forest monitoring sites.

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Section: Root Nutrientsmentioning

confidence: 57%

Section: Root Biomassmentioning

confidence: 95%

Root parameters of forest trees as sensitive indicators of acidifying pollutants: a review of research of Japanese forest trees

Hirano

Mizoguchi

Brunner

2007

Journal of Forest Research

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“…The growth of the tropical woody plants used in the current experiment was stimulated by Ai application as previously reported Watanabe et al 1997) and also by NH4 application as an N-source compared with N0 3 application (Fig. 1).…”

Section: Discussionmentioning

confidence: 99%

Effects of nitrogen source and aluminum on growth of tropical tree seedlings adapted to low pH soils

Watanabe

Osaki

Tadano

1998

Soil Science and Plant Nutrition

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“…Alternatively, competition may have been for another below-ground resource not measured in this study (e.g. Mg; Burslem et al 1996), Melastoma is known to accumulate Al in leaf tissues (Watanabe 1997, Watanabe & Osaki 2001. Melastoma may have dominated the competitive stands by modifying soil resource conditions through an allelopathic effect.…”

Section: Discussionmentioning

confidence: 99%

Competitive dominance in a secondary successional rain-forest community in Borneo

Davies

Semui

2005

J. Trop. Ecol.

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Abstract:Competitive interactions among pioneer species may have a significant impact on the course of secondary succession in tropical rain forests. We predicted that the outcome of competitive interactions in early succession would vary with soil nutrient availability. To test this hypothesis we grew seven pioneer tree species alone and in dense competitive mixtures, with four nutrient treatments: no nutrient addition, and N, P, and N plus P addition. Performance of plants grown alone and in mixtures was strongly nutrient limited. However, contrary to expectation, the competitive hierarchy among the seven species was almost identical among the four nutrient treatments. The dominant species, Melastoma malabathricum, accounted for > 70% of total stand biomass in all nutrient treatments. Seedlings of this species had higher rates of gas exchange and initial growth, and lower root allocation than the other species. Profiles of light availability within the competitive stands indicated that light levels at ground level were well above levels at which pioneer species can successfully survive and grow, yet seedlings of species other than Melastoma remained stunted. Leaf N concentrations in all stands were 25-55% reduced by competitive interactions, and N addition increased relative competitive performance in only Melastoma suggesting that Melastoma was particularly effective at N acquisition, limiting nutrient uptake by the other species. Toward the end of the experiment individuals of Melastoma began to reproduce, suggesting that the competitive hierarchy would have changed in a longer-duration experiment.

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Aluminum-induced growth stimulation in relation to calcium, magnesium, and silicate nutrition inMelastoma malabathricumL.

Cited by 57 publications

References 28 publications

Root parameters of forest trees as sensitive indicators of acidifying pollutants: a review of research of Japanese forest trees

Root parameters of forest trees as sensitive indicators of acidifying pollutants: a review of research of Japanese forest trees

Effects of nitrogen source and aluminum on growth of tropical tree seedlings adapted to low pH soils

Competitive dominance in a secondary successional rain-forest community in Borneo

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