Open Access Repository

A major QTL controlling the tolerance to manganese toxicity in barley (Hordeum vulgare L.)

Huang, X, Fan, Y, Shabala, L ORCID: 0000-0002-5360-8496, Rengel, Z, Shabala, S ORCID: 0000-0003-2345-8981 and Zhou, MX ORCID: 0000-0003-3009-7854 2018 , 'A major QTL controlling the tolerance to manganese toxicity in barley (Hordeum vulgare L.)' , Molecular Breeding, vol. 38, no. 2 , pp. 1-9 , doi: 10.1007/s11032-017-0767-9.

Full text not available from this repository.


Waterlogging stress disturbs plant metabolism through increased ion (manganese and iron) toxicity resulting from the changes in the soil redox potential under hypoxic conditions. Our previous study found a significant correlation between the tolerance to Mn2+ toxicity and waterlogging stress tolerance in barley, suggesting that waterlogging tolerance could be increased by improving the tolerance to Mn2+ toxicity. In this study, a doubled-haploid (DH) population from the cross between barley varieties Yerong and Franklin (waterlogging-tolerant and -sensitive, respectively) was used to identify QTL controlling tolerance to Mn2+ toxicity based on chlorophyll content and plant survival as selection criteria. Four significant QTL for plant survival under Mn2+ stress (QSur.yf.1H, QSur.yf.3H, QSur.yf.4H, and QSur.yf.6H) were identified in this population at the seedling stage. Two significant QTL (QLC.yf.3H and QLC.yf.6H) controlling leaf chlorosis under Mn2+ stress were identified on chromosomes 3H and 6H close to QSur.yf.3H and QSur.yf.6H. The major QTL QSur.yf.3H, located near the marker Bmag0013, explained 21% of the phenotypic variation. The major QTL for plant survival on 3H was validated in a different DH population (TX9425/Naso Nijo). This major QTL could potentially be used in breeding programmes to enhance tolerance to both manganese toxicity and waterlogging.

Item Type: Article
Authors/Creators:Huang, X and Fan, Y and Shabala, L and Rengel, Z and Shabala, S and Zhou, MX
Keywords: barley (Hordeum vulgare L.), Mn2+ toxicity, waterlogging tolerance, QTL mapping
Journal or Publication Title: Molecular Breeding
Publisher: Kluwer Academic Publ
ISSN: 1380-3743
DOI / ID Number: 10.1007/s11032-017-0767-9
Copyright Information:

Copyright 2018 Springer Science+Business Media B.V., part of Springer Nature

Related URLs:
Item Statistics: View statistics for this item

Actions (login required)

Item Control Page Item Control Page