Genetic architecture of limit dextrinase inhibitor (LDI) activity in Tibetan wild barley

Y. Huang; S. Cai; L. Ye; Y. Han; D. Wu; F. Dai; C. Li; G. Zhang

doi:10.1186/1471-2229-14-117

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Genetic architecture of limit dextrinase inhibitor (LDI) activity in Tibetan wild barley

Journal article

Open access

Peer reviewed

Genetic architecture of limit dextrinase inhibitor (LDI) activity in Tibetan wild barley

Y. Huang, S. Cai, L. Ye, Y. Han, D. Wu, F. Dai, C. Li and G. Zhang

BMC Plant Biology, Vol.14(1), Article number: 117

2014

DOI: https://doi.org/10.1186/1471-2229-14-117

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Abstract

BACKGROUND: Limit dextrinase inhibitor (LDI) inhibits starch degradation in barley grains during malting because it binds with limit dextrinase (LD). There is a wide genetic variation in LDI synthesis and inactivation during barley grain development and germination. However, the genetic control of LDI activity remains little understood. RESULTS: In this study, association analysis was performed on 162 Tibetan wild accessions by using LDI activity, 835 Diversity Arrays Technology (DArT) markers and single nucleotide polymorphisms (SNPs) of the gene HvLDI encoding LDI. Two DArT markers, bpb-8347, bpb-0068, and 31 SNPs of HvLDI were significantly associated with LDI activity, explaining 10.0%, 6.6% and 13.4% of phenotypic variation, respectively. Bpb-8347 is located on chromosome 6H, near the locus of HvLDI, and bpb-0068 is located on 3H. CONCLUSIONS: The current results confirmed the locus of the gene controlling LDI activity and identified a new DArT markers associated with LDI activity. The SNPs associated with LDI activity may provide a new insight into the genetic variation of LDI activity in barley grains.

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Title: Genetic architecture of limit dextrinase inhibitor (LDI) activity in Tibetan wild barley
Authors/Creators: Y. Huang (Author/Creator) - Zhejiang University
S. Cai (Author/Creator) - Zhejiang University
L. Ye (Author/Creator) - Zhejiang University
Y. Han (Author/Creator) - Zhejiang University
D. Wu (Author/Creator) - Zhejiang University
F. Dai (Author/Creator) - Zhejiang University
C. Li (Author/Creator) - Department of Agriculture and Food Western Australia
G. Zhang (Author/Creator) - Zhejiang University
Publication Details: BMC Plant Biology, Vol.14(1), Article number: 117
Publisher: BioMed Central
Identifiers: 991005544692607891
Copyright: © 2014 Huang et al.
Murdoch Affiliation: Murdoch University
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Citation topics: 3 Agriculture, Environment & Ecology; 3.85 Food Science & Technology; 3.85.99 Cereal Starch Properties
Web Of Science research areas: Plant Sciences
ESI research areas: Plant & Animal Science