Salicylic acid biosynthesis is enhanced and contributes to increased biotrophic pathogen resistance in Arabidopsis hybrids.

dc.contributor.author

Yang, Li

dc.contributor.author

Li, Bosheng

dc.contributor.author

Zheng, Xiao-yu

dc.contributor.author

Li, Jigang

dc.contributor.author

Yang, Mei

dc.contributor.author

Dong, Xinnian

dc.contributor.author

He, Guangming

dc.contributor.author

An, Chengcai

dc.contributor.author

Deng, Xing Wang

dc.coverage.spatial

England

dc.date.accessioned

2015-08-07T14:48:09Z

dc.date.issued

2015-06-12

dc.description.abstract

Heterosis, the phenotypic superiority of a hybrid over its parents, has been demonstrated for many traits in Arabidopsis thaliana, but its effect on defence remains largely unexplored. Here, we show that hybrids between some A. thaliana accessions show increased resistance to the biotrophic bacterial pathogen Pseudomonas syringae pv. tomato (Pst) DC3000. Comparisons of transcriptomes between these hybrids and their parents after inoculation reveal that several key salicylic acid (SA) biosynthesis genes are significantly upregulated in hybrids. Moreover, SA levels are higher in hybrids than in either parent. Increased resistance to Pst DC3000 is significantly compromised in hybrids of pad4 mutants in which the SA biosynthesis pathway is blocked. Finally, increased histone H3 acetylation of key SA biosynthesis genes correlates with their upregulation in infected hybrids. Our data demonstrate that enhanced activation of SA biosynthesis in A. thaliana hybrids may contribute to their increased resistance to a biotrophic bacterial pathogen.

dc.identifier

http://www.ncbi.nlm.nih.gov/pubmed/26065719

dc.identifier

ncomms8309

dc.identifier.eissn

2041-1723

dc.identifier.uri

https://hdl.handle.net/10161/10360

dc.language

eng

dc.publisher

Springer Science and Business Media LLC

dc.relation.ispartof

Nat Commun

dc.relation.isversionof

10.1038/ncomms8309

dc.subject

Arabidopsis

dc.subject

Pseudomonas syringae

dc.subject

Salicylic Acid

dc.title

Salicylic acid biosynthesis is enhanced and contributes to increased biotrophic pathogen resistance in Arabidopsis hybrids.

dc.type

Journal article

duke.contributor.orcid

Dong, Xinnian|0000-0002-1120-0951

pubs.author-url

http://www.ncbi.nlm.nih.gov/pubmed/26065719

pubs.begin-page

7309

pubs.organisational-group

Biology

pubs.organisational-group

Duke

pubs.organisational-group

Trinity College of Arts & Sciences

pubs.publication-status

Published online

pubs.volume

6

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