Effect of aluminium on bananas (<i>Musa</i>spp.) cultivated in acid solutions. II. Water and nutrient uptake

Rufyikiri, Gervais; Dufey, Joseph; Nootens, Didier; Delvaux, Bruno

doi:10.1051/fruits:2001107

Cited by 37 publications

(40 citation statements)

References 35 publications

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“…While the inhibition of cell elongation by Al could be explained by several mechanisms, it has already been attributed, at least in part, to the acute (Abdel-Basset et al 2010;Z.B. Yang et al 2012) or chronic (Rufyikiri et al 2001) inhibition of water uptake. Soluble sugars, amino acids and organic and inorganic ions strongly affect osmotic properties of the cells, hence maintaining the steady-state level of water uptake (Sharp et al 1990).…”

Section: Introductionmentioning

confidence: 99%

Sucrose transporter NtSUT1 confers aluminum tolerance on cultured cells of tobacco (Nicotiana tabacumL.)

Sameeullah

Sasaki

Yamamoto

2013

Soil Science and Plant Nutrition

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The role of plasma membrane-localized sucrose transporter (NtSUT1) was investigated using cultured tobacco cell (Nicotiana tabacum L.) line BY-2. The wild type (WT) cells were first transformed with the NtSUT1 gene or its fragments cloned from tobacco cell line SL to form the over-expression (OX) and suppression (RNAi) cell lines, respectively. Using OX and RNAi transgenics, the role of NtSUT1 in growth capacity of actively growing cells and in aluminum (Al)-treated cells was examined. During the logarithmic phase of growth in nutrient medium containing 2,4-dichlorophenoxyacetic acid (2,4-D), both the rate of sucrose uptake measured with radio-tracer and the content of soluble sugars were higher in OX and lower in RNAi cell lines compared to WT. Overall, the content of soluble sugars negatively correlated with the time necessary for doubling mass (fresh weight). When cells were treated without (control) or with Al in a simple medium containing calcium, sucrose and 2-(N-morpholino)ethanesulfonic acid (MES; pH 5.0) for up to 18 h, the expression of NtSUT1 under its native promoter, or under the control of strong constitutive cauliflower mosaic virus (CaMV) 35S promoter, was strongly dependent on the presence of 2,4-D. Thereafter, the cells were preferentially treated in the presence of 2,4-D. During 6 h after a start of the control treatment, sucrose uptake rates were, compared to WT, slightly higher and lower in OX and RNAi lines respectively. The addition of Al reduced the sucrose uptake rates of OX and WT to the level of RNAi line, indicating that Al inhibits sucrose uptake via NtSUT1. During the post-Al culture of control and Al-treated cells in a nutrient medium, sucrose uptake rates were much higher in OX compared to WT and RNAi lines, which closely and positively correlated with the growth capacity of the cells. Judging from the growth capacity of Al-treated cells relative to that of control cells, OX cells were more tolerant to Al than WT and RNAi. In summary, we conclude that over-expression of NtSUT1 confers higher growth capacity in actively growing cells as well as in Al-treated cells.

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Section: Introductionmentioning

confidence: 99%

Sucrose transporter NtSUT1 confers aluminum tolerance on cultured cells of tobacco (Nicotiana tabacumL.)

Sameeullah

Sasaki

Yamamoto

2013

Soil Science and Plant Nutrition

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Section: Bananamentioning

confidence: 99%

“…Despite the fact that acid soils are common in the www.intechopen.com Free Al is directly toxic to plant roots and, in most cases, is little absorbed or translocated to the aerial plant parts (Bernal & Clark, 1997;Rufyikiri et al, 2000b). Rufyikiri et al (2000b) performed a hydroponic experiment using a continuous nutrient flow device (device 2) to study the effect of Al on young banana plants. For most parameters (appearance of new leaves, total biomass, pseudostem height, leaf surface area, growth of lateral roots, number and diameter of root axes), the two plantains Agbagba and Obino l'Ewaï appeared more Al-resistant and Kayinja more Al-sensitive than both Grande Naine and Igitsiri (Rufyikiri et al 2000b).…”

Section: Bananamentioning

confidence: 99%

“…Rufyikiri et al (2000b) performed a hydroponic experiment using a continuous nutrient flow device (device 2) to study the effect of Al on young banana plants. For most parameters (appearance of new leaves, total biomass, pseudostem height, leaf surface area, growth of lateral roots, number and diameter of root axes), the two plantains Agbagba and Obino l'Ewaï appeared more Al-resistant and Kayinja more Al-sensitive than both Grande Naine and Igitsiri (Rufyikiri et al 2000b). In all plants parts for all cultivars, Al reduced Ca and Mg contents, increased K and P contents, and did not change significantly N content.…”

Section: Bananamentioning

confidence: 99%

“…In table 1, we describe hydroponic solutions as close as possible to the actual concentrations of the soil solution for banana, rice and coniferous tree seedlings. For banana, the nutrient solution composition is determined from (i) the nutrient requirements and the mineral equilibria as established for young bananas, and (ii) the realistic ion concentrations in solutions of tropical acid soils (Rufyikiri et al, 2000b). The composition of the nutrient solution for rice mimicks soil conditions, i.e.…”

Section: Introductionmentioning

confidence: 99%

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Effect of aluminium on bananas (Musaspp.) cultivated in acid solutions. II. Water and nutrient uptake

Cited by 37 publications

References 35 publications

Sucrose transporter NtSUT1 confers aluminum tolerance on cultured cells of tobacco (Nicotiana tabacumL.)

Sucrose transporter NtSUT1 confers aluminum tolerance on cultured cells of tobacco (Nicotiana tabacumL.)

Understanding Root Uptake of Nutrients, Toxic and Polluting Elements in Hydroponic Culture

The Rhizosphere

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