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  Evolution of herbivore-induced early defense signaling was shaped by genome-wide duplications in Nicotiana

Zhou, W., Brockmöller, T., Ling, Z., Omdahl, A., Baldwin, I. T., & Xu, S. (2016). Evolution of herbivore-induced early defense signaling was shaped by genome-wide duplications in Nicotiana. eLife, 5: e19531. doi:10.7554/eLife.19531.

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 Creators:
Zhou, Wenwu1, Author              
Brockmöller, Thomas1, 2, Author              
Ling, Zhihao1, 2, Author              
Omdahl, Ashton1, Author              
Baldwin, Ian Thomas1, Author              
Xu, Shuqing1, Author              
Affiliations:
1Department of Molecular Ecology, Prof. I. T. Baldwin, MPI for Chemical Ecology, Max Planck Society, ou_24029              
2IMPRS on Ecological Interactions, MPI for Chemical Ecology, Max Planck Society, Jena, DE, ou_421900              

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 Abstract: Herbivore-induced defenses are widespread, rapidly evolving and relevant for plant fitness. Such induced defenses are often mediated by early defense signaling (EDS) rapidly activated by the perception of herbivore associated elicitors (HAE) that includes transient accumulations of jasmonic acid (JA). Analyzing 60 HAE-induced leaf transcriptomes from closely-related Nicotiana species revealed a key gene co-expression network (M4 module) which is co-activated with the HAE-induced JA accumulations but is elicited independently of JA, as revealed in plants silenced in JA signaling. Functional annotations of the M4 module were consistent with roles in EDS and a newly identified hub gene of the M4 module (NaLRRK1) mediates a negative feedback loop with JA signaling. Phylogenomic analysis revealed preferential gene retention after genome-wide duplications shaped the evolution of HAE-induced EDS in Nicotiana. These results highlight the importance of genome-wide duplications in the evolution of adaptive traits in plants.

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 Dates: 2016-11-042016-11-04
 Publication Status: Published online
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 Identifiers: Other: ITB528
DOI: 10.7554/eLife.19531
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Title: eLife
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Publ. Info: Cambridge : eLife Sciences Publications
Pages: - Volume / Issue: 5 Sequence Number: e19531 Start / End Page: - Identifier: ISSN: 2050-084X
CoNE: https://pure.mpg.de/cone/journals/resource/2050-084X