Identification of dominant mutations that confer increased aluminium tolerance through mutagenesis of the Al-sensitive Arabidopsis mutant, als3-1

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Identification of dominant mutations that confer increased aluminium tolerance through mutagenesis of the Al-sensitive Arabidopsis mutant, als3-1.

Aluminium (Al) toxicity is a global agricultural problem that occurs in acid soil environments and severely limits root growth and crop productivity. The isolation and characterization of a gene, ALS3, which is absolutely required by Arabidopsis seedlings for growth in an Al-toxic environment was reported previously. Since the als3-1 loss-of-function mutant has extreme root growth inhibition ev...

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Identification of Chimeric Repressors that Confer Salt and Osmotic Stress Tolerance in Arabidopsis

We produced transgenic Arabidopsis plants that express chimeric genes for transcription factors converted to dominant repressors, using Chimeric REpressor gene-Silencing Technology (CRES-T), and evaluated the salt tolerance of each line. The seeds of the CRES-T lines for ADA2b, Msantd, DDF1, DREB26, AtGeBP, and ATHB23 exhibited higher germination rates than Wild type (WT) and developed rosette ...

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An Arabidopsis mutant that requires increased calcium for potassium nutrition and salt tolerance.

Potassium (K+) nutrition and salt tolerance are key factors controlling plant productivity. However, the mechanisms by which plants regulate K+ nutrition and salt tolerance are poorly understood. We report here the identification of an Arabidopsis thaliana mutant, sos3 (salt-overly-sensitive 3), which is hypersensitive to Na+ and Li+ stresses. The mutation is recessive and is in a nuclear gene ...

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Identification and Functional Characterization of Arabidopsis icl Mutant Under Trehalose Feeding in Light and Dark Conditions

Trehalose is a non-reducing sugar that plays an important role in plant growth and development. To study the role of trehalose on lipid metabolism and gluconeogenesis, Arabidopsis thaliana wild type (WT) and TreF (a line expressing trehalase) were grown on ½ MS medium with or without 100 mM sucrose and or trehalose in light or continuous darkness. In dark, trehalose leads skotomorphoge...

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ژورنال

عنوان ژورنال: Journal of Experimental Botany

سال: 2006

ISSN: 1460-2431,0022-0957

DOI: 10.1093/jxb/erj080