NDLI: Anti-microbial peptide (AMP): nucleotide variation, gene expression, and host resistance in the white pine blister rust (WPBR) pathosystem

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Anti-microbial peptide (AMP): nucleotide variation, gene expression, and host resistance in the white pine blister rust (WPBR) pathosystem

Content Provider	Springer Nature Link
Author	Liu, Jun Jun Zamany, Arezoo Sniezko, Richard A.
Copyright Year	2012
Abstract	Pinus monticola antimicrobial peptide (PmAMP1) inhibits growth of Cronartium ribicola and other fungal pathogens. C. ribicola causes white pine blister rust and has resulted in a dramatic reduction of native white pines across North America. Quantitative disease resistance (QDR) is a highly desirable trait screened in breeding programs for durable resistance against C. ribicola. Along with phenotyping on a collection of germplasms, we analyzed PmAMP1 transcript and protein expression and re-sequenced the full-length gene including its promoter region. A mixed linear model was used to identify the association of single nucleotide polymorphisms (SNPs) with accumulated protein and stem QDR levels. Among 16 PmAMP1 SNPs identified in the present study, we found an association of protein levels with 6 SNPs (P < 0.05), including 2 in the 5′-untranslated region (UTR), 3 in the open reading frame (ORF) region with 2 nonsynonymous SNPs, and 1 SNP in the 3′-UTR. Another set of six SNPs was associated with stem QDR levels (P < 0.05), with one localized in the promoter region and the other five in the ORF region with four nonsynonymous changes, suggesting that multiple isoforms may have antifungal activity to differing degrees. Of three common PmAMP1 haplotypes, the trees with haplotype 2 showed high QDR levels with moderate protein abundance while those trees with haplotype 3 exhibited low QDR levels in the susceptible range and the lowest level of protein accumulation. Thus, an association of gene variations with protein abundance and resistance-related traits may facilitate elucidation of physiological contribution of PmAMP1 to host resistance.
Starting Page	43
Ending Page	54
Page Count	12
File Format	PDF
ISSN	00320935
Journal	Planta
Volume Number	237
Issue Number	1
e-ISSN	14322048
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-09-12
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Association analysis Protein expression Quantitative disease resistance Transcript regulation White pine blister rust Plant Sciences Agriculture Ecology Forestry
Content Type	Text
Resource Type	Article
Subject	Genetics Plant Science

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