Abstract
Boron (B) amelioration of aluminum (Al) toxicity was studied for growth of mungbean (Phaseolus aureus Roxb.) seedlings and cuttings (without roots) in a growth chamber. Mungbean seedlings and cuttings were grown in the solution with combinations of three concentrations of B (0,5, and 50 μM) and three concentrations of Al (0, 2, and 5 mM) in randomized complete block design experiments for 16 days. Results showed that B significantly promoted elongation of epicotyls and hypocotyls, and increased height of seedlings grown under Al stress. Boron also increased fresh weight of seedlings in high Al solution. Treatment of plants grown with high B and Al stress had no apparent effect on fresh and dry weights of seedling roots. Seedling dry weight increased significantly by adding high B to solutions with 2 mM or 5 mM Al. No significant differences were observed between the high B treatment and the control (normal B, 5 μM) in lengths of epicotyls and fresh and dry weights of mungbean cuttings grown under Al stress. High concentrations of B decreased soluble protein and increased chlorophyll in seedlings treated with 2 mM Al. Boron had no amelioration effect on cuttings grown with Al, although Al increased soluble protein. Our results suggested that B alleviation of Al toxicity was related to root function and Al toxicity may possibly be due, in part, to B deficiency.
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Claims 11
Claim · model-written summary
Boron significantly promoted epicotyl and hypocotyl elongation and seedling height under aluminum stress.
- Treatment
- Be0
- Outcome
- elongation of epicotyls and hypocotyls, and increased height of seedlingse0
- Direction
- promotede0
Not reportedTaxonComparator
Verbatim
e0“B significantly promoted elongation of epicotyls and hypocotyls, and increased height of seedlings grown under Al stress”
Claim · model-written summary
Boron increased fresh seedling weight under high aluminum.
Not reportedTaxonComparator
Verbatim
e0“Boron also increased fresh weight of seedlings in high Al solution”
Claim · model-written summary
High boron with aluminum stress had no apparent effect on root fresh and dry weights.
- Treatment
- high B and Al stresse0
- Outcome
- fresh and dry weights of seedling rootse0
- Direction
- no_changeinferrede0
Not reportedTaxonComparator
Verbatim
e0“Treatment of plants grown with high B and Al stress had no apparent effect on fresh and dry weights of seedling roots”
Claim · model-written summary
High boron increased seedling dry weight with 2 or 5 mM aluminum.
Not reportedTaxonComparator
Verbatim
e0“Seedling dry weight increased significantly by adding high B to solutions with 2 mM or 5 mM Al”
Claim · model-written summary
High boron and normal boron did not differ significantly in epicotyl lengths and cutting fresh and dry weights under aluminum stress.
- Taxon
- mungbean
.jpg?width=60)
Vigna radiatae0 - Treatment
- high B treatmente0
- Outcome
- lengths of epicotyls and fresh and dry weights of mungbean cuttingse0
- Direction
- no_changeinferrede0
- Comparator
- control (normal B, 5 μM)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“No significant differences were observed between the high B treatment and the control (normal B, 5 μM) in lengths of epicotyls and fresh and dry weights of mungbean cuttings grown under Al stress”
Claim · model-written summary
High boron decreased soluble protein in seedlings treated with 2 mM aluminum.
Not reportedTaxonComparator
Verbatim
e0“High concentrations of B decreased soluble protein and increased chlorophyll in seedlings treated with 2 mM Al”
Claim · model-written summary
High boron increased chlorophyll in seedlings treated with 2 mM aluminum.
Not reportedTaxonComparator
Verbatim
e0“High concentrations of B decreased soluble protein and increased chlorophyll in seedlings treated with 2 mM Al”
Claim · model-written summary
Boron did not alleviate aluminum stress in cuttings.
Not reportedTaxonComparator
Verbatim
e0“Boron had no amelioration effect on cuttings grown with Al”
Claim · model-written summary
Aluminum increased soluble protein in cuttings.
Not reportedTaxonComparator
Verbatim
e0“Al increased soluble protein”
Claim · model-written summary
The authors suggest boron alleviation depends on root function.
Not reportedTaxon
Verbatim
e0“B alleviation of Al toxicity was related to root function”
Claim · model-written summary
The authors suggest aluminum toxicity may partly reflect boron deficiency.
Not reportedTaxon
Verbatim
e0“Al toxicity may possibly be due, in part, to B deficiency”
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