Effects of low pH and Al on absorption and translocation of some essential nutrients in excised barley roots

Malkanthi, Dugganna Ralalage^Ramya; Moritsugu, Masumi; Yokoyama, Keiichi

doi:10.1080/00380768.1995.10419582

Cited by 21 publications

(9 citation statements)

References 22 publications

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“…Although it is generally recognized that Al is a major factor limiting plant root growth, some reports did show beneficial effect of Al on plant growth (Mullette 1975;Konishi et al 1985;Haridasan 1988;Huang and Bachelard 1993;Malkanthi et al 1995;Osaki et al 1997;Watanabe et al 2005). This beneficial effect often occurs at low or moderate Al concentrations.…”

Section: Discussionmentioning

confidence: 91%

Effects of aluminum on superoxide dismutase and peroxidase activities, and lipid peroxidation in the roots and calluses of soybeans differing in aluminum tolerance

Nian

Zhang

et al. 2010

Acta Physiol Plant

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The seedlings of two soybean genotypes, Altolerant PI 416937 (PI) and Al-sensitive Young, were cultured in the solution containing 0, 25 or 50 lM Al (AlCl 3 Á6H 2 O) for 24, 36 or 48 h in the hydroponics, and the calluses induced from two genotypes were cultured in medium containing 0, 10, 50 or 100 lM Al for 5, 10 or 15 days, respectively. The effects of Al on growth of seedling roots and calluses, antioxidant enzyme activities of superoxide dismutase (SOD) and peroxidase (POD) and lipid peroxidation were investigated. Under Al stress, PI was more tolerant to Al toxicity than Young at both intact plant and tissue levels and lower concentrations of Al significantly stimulated the root and callus growth of PI. Al application enhanced the activities of SOD and POD and lipid peroxidation in both roots and calluses of two genotypes. Although the differences of SOD activities between two genotypes in response to Al toxicity depended on Al concentration and durations of treatment, SOD activities in the roots of PI were higher than those in the roots of corresponding Young in the presence of Al for 36 or 48 h. Meanwhile, the POD activities in PI roots increased as the Al levels and durations of treatment increased, significantly higher than those in the corresponding Young roots. Moreover, Al-treated PI had significantly lower lipid peroxidation than Young at both root and callus levels. These results suggest that the enhanced antioxidant-related enzyme activities and reduced lipid peroxidation in PI might be one of Al-tolerant mechanisms.

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Section: Discussionmentioning

confidence: 91%

Effects of aluminum on superoxide dismutase and peroxidase activities, and lipid peroxidation in the roots and calluses of soybeans differing in aluminum tolerance

Nian

Zhang

et al. 2010

Acta Physiol Plant

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“…Kinraide26 explained the rhizostimulatory effects of Al as an alleviation of H + toxicity. This will enable plants to maintain or achieve higher nutrient uptake under unfavourable conditions created by the presence of Al and H + 24…”

Section: Discussionmentioning

confidence: 99%

Growth and nutrient uptake of tea under different aluminium concentrations

et al. 2008

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BACKGROUND: The uptake of essential nutrients such as P, Fe, K, Ca and Mg is depressed by Al in most plants. This study aimed to investigate the concentrations at which Al could be toxic to C. sinensis. The suppression of nutrient uptake was investigated by comparing growth and nutrient uptake at different Al doses. The quantification of Al in apoplasm, symplasm and cell wall of C. sinensis was also studied.

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“…However, in their experiments the roots were nurtured for 2 days of Al treatments. Recently, Malkanthi et al [6] reported stimulating effects of Al on K absorption in both apex and proximal zone of barley roots. However, it is a general observation that K nutrition is unaffected by Al in most plants [3].…”

Section: Resultsmentioning

confidence: 98%

Early effects of aluminium on nutrient (K, Ca, and Mg) status of different root zones of two rice cultivars

Jan

Matsumoto

1999

Toxicological & Environmental Chemistry

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Effects of aluminium on nutrient (K, Ca, and Mg) status of different root zones were evaluated in two rice cultivars with high (IR45) and low (BG35) Al sensitivity. Roots of the two cultivars were exposed to 140 µM AlCl 3 at pH 4.1 for 24 h. The Al accumulation in IR45 was higher than in BG35 in all the root zones. The uptake of Al in apex and middle-root zone was higher than in the basal zone of both cultivars. The enhanced Al uptake in root apical and middle zones of IR45 induced drastical changes in Ca and Mg concentrations. As these changes occurred without any Al-growth inhibition, it is suggested that disturbances of these nutrients are the primary lesion of Al in IR45. The results further indicated that competitive interactions between Al and Mg in the Al-sensitive cultivar have an important role for Al tolerance in rice plants.

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Effects of low pH and Al on absorption and translocation of some essential nutrients in excised barley roots

Cited by 21 publications

References 22 publications

Effects of aluminum on superoxide dismutase and peroxidase activities, and lipid peroxidation in the roots and calluses of soybeans differing in aluminum tolerance

Effects of aluminum on superoxide dismutase and peroxidase activities, and lipid peroxidation in the roots and calluses of soybeans differing in aluminum tolerance

Growth and nutrient uptake of tea under different aluminium concentrations

Early effects of aluminium on nutrient (K, Ca, and Mg) status of different root zones of two rice cultivars

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