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Aluminium tolerance in barley (Hordeum vulgare L.): physiological mechanisms, genetics and screening methods


Wang, Junping and Raman, H and Zhang, GP and Mendham, NJ and Zhou, M, Aluminium tolerance in barley (Hordeum vulgare L.): physiological mechanisms, genetics and screening methods, Journal of Zhejiang University Science B, 7, (10) pp. 769-787. ISSN 1673-1581 (2006) [Refereed Article]

DOI: doi:10.1631/jzus.2006.B0769


Aluminium (Al) toxicity is one of the major limiting factors for barley production on acid soils. It inhibits root cell division and elongation, thus reducing water and nutrient uptake, consequently resulting in poor plant growth and yield. Plants tolerate Al either through external resistance mechanisms, by which Al is excluded from plant tissues or internal tolerance mechanisms, conferring the ability of plants to tolerate Al ion in the plant symplasm where Al that has permeated the plasmalemma is sequestered or converted into an innocuous form. Barley is considered to be most sensitive to Al toxicity among cereal species. Al tolerance in barley has been assessed by several methods, such as nutrient solution culture, soil bioassay and field screening. Genetic and molecular mapping research has shown that Al tolerance in barley is controlled by a single locus which is located on chromosome 4H. Molecular markers linked with Al tolerance loci have been identified and validated in a range of diverse populations. This paper reviews the (1) screening methods for evaluating Al tolerance, (2) genetics and (3) mechanisms underlying Al tolerance in barley.

Item Details

Item Type:Refereed Article
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Crop and pasture production
Research Field:Crop and pasture improvement (incl. selection and breeding)
Objective Division:Plant Production and Plant Primary Products
Objective Group:Grains and seeds
Objective Field:Barley
UTAS Author:Wang, Junping (Ms Junping Wang)
UTAS Author:Mendham, NJ (Dr Neville Mendham)
UTAS Author:Zhou, M (Professor Meixue Zhou)
ID Code:39656
Year Published:2006
Deposited By:Agricultural Science
Deposited On:2006-08-01
Last Modified:2007-04-16

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