A role for a menthone reductase in resistance against microbial pathogens in plants

Woo Choi Hyong, Gil Lee Byung, Hyun Kim Nak, Yong Park, Woo Lim Chae, Hyun Kyu Song, Kook Hwang Byung

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

Plants elaborate a vast array of enzymes that synthesize defensive secondary metabolites in response to pathogen attack. Here, we isolated the pathogen-responsive CaMNR1 [menthone: (+)-(3S)-neomenthol reductase] gene, a member of the short-chain dehydrogenase/reductase (SDR) superfamily, from pepper (Capsicum annuum) plants. Gas chromatography-mass spectrometry analysis revealed that purified CaMNR1 and its ortholog AtSDR1 from Arabidopsis (Arabidopsis thaliana) catalyze a menthone reduction with reduced nicotinamide adenine dinucleotide phosphate as a cofactor to produce neomenthol with antimicrobial activity. CaMNR1 and AtSDR1 also possess a significant catalytic activity for neomenthol oxidation. We examined the cellular function of the CaMNR1 gene by virus-induced gene silencing and ectopic overexpression in pepper and Arabidopsis plants, respectively. CaMNR1-silenced pepper plants were significantly more susceptible to Xanthomonas campestris pv vesicatoria and Colletotrichum coccodes infection and expressed lower levels of salicylic acid-responsive CaBPR1 and CaPR10 and jasmonic acid-responsive CaDEF1. CaMNR1-overexpressing Arabidopsis plants exhibited enhanced resistance to the hemibiotrophic pathogen Pseudomonas syringae pv tomato DC3000 and the biotrophic pathogen Hyaloperonospora parasitica isolate Noco2, accompanied by the induction of AtPR1 and AtPDF1.2. In contrast, mutation in the CaMNR1 ortholog AtSDR1 significantly enhanced susceptibility to both pathogens. Together, these results indicate that the novel menthone reductase gene CaMNR1 and its ortholog AtSDR1 positively regulate plant defenses against a broad spectrum of pathogens.

Original languageEnglish
Pages (from-to)383-401
Number of pages19
JournalPlant Physiology
Volume148
Issue number1
DOIs
Publication statusPublished - 2008 Sep 1

Fingerprint

menthone
plant pathogens
Oxidoreductases
Arabidopsis
pathogens
pepper
Colletotrichum coccodes
Xanthomonas campestris
Peronospora parasitica
Colletotrichum
Genes
Pseudomonas syringae
Capsicum
Salicylic Acid
genes
Gene Silencing
gene silencing
Lycopersicon esculentum
jasmonic acid
Capsicum annuum

ASJC Scopus subject areas

  • Plant Science
  • Genetics
  • Physiology

Cite this

Hyong, W. C., Byung, G. L., Nak, H. K., Park, Y., Chae, W. L., Song, H. K., & Byung, K. H. (2008). A role for a menthone reductase in resistance against microbial pathogens in plants. Plant Physiology, 148(1), 383-401. https://doi.org/10.1104/pp.108.119461

A role for a menthone reductase in resistance against microbial pathogens in plants. / Hyong, Woo Choi; Byung, Gil Lee; Nak, Hyun Kim; Park, Yong; Chae, Woo Lim; Song, Hyun Kyu; Byung, Kook Hwang.

In: Plant Physiology, Vol. 148, No. 1, 01.09.2008, p. 383-401.

Research output: Contribution to journalArticle

Hyong, WC, Byung, GL, Nak, HK, Park, Y, Chae, WL, Song, HK & Byung, KH 2008, 'A role for a menthone reductase in resistance against microbial pathogens in plants', Plant Physiology, vol. 148, no. 1, pp. 383-401. https://doi.org/10.1104/pp.108.119461
Hyong, Woo Choi ; Byung, Gil Lee ; Nak, Hyun Kim ; Park, Yong ; Chae, Woo Lim ; Song, Hyun Kyu ; Byung, Kook Hwang. / A role for a menthone reductase in resistance against microbial pathogens in plants. In: Plant Physiology. 2008 ; Vol. 148, No. 1. pp. 383-401.
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