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Park, Chan Young
Calcium Dynamics Lab
Research Interests
  • Calcium Signaling, calcium Channels, immune, neuroscience, drug Development

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Constitutive expression of mammalian nitric oxide synthase in tobacco plants triggers disease resistance to pathogens

Cited 13 times inthomson ciCited 18 times inthomson ci
Title
Constitutive expression of mammalian nitric oxide synthase in tobacco plants triggers disease resistance to pathogens
Author
Park, Chan YoungChun, Hyun JinPark, Hyeong CheolKoo, Sung CheolLee, Ju HuckChoi, Man SooKang, Chang HoBaek, DongwonCheong, Yong HwaYun, Dae-JinChung, Woo SikCho, Moo JeKim, Min Chul
Issue Date
2012-11
Publisher
KOREAN SOC MOLECULAR & CELLULAR BIOLOGY
Citation
MOLECULES AND CELLS, v.34, no.5, pp.463 - 471
Abstract
Nitric oxide (NO) is known for its role in the activation of plant defense responses. To examine the involvement and mode of action of NO in plant defense responses, we introduced calmodulin-dependent mammalian neuronal nitric oxide synthase (nNOS), which controls the CaMV35S promoter, into wild-type and NahG tobacco plants. Constitutive expression of nNOS led to NO production and triggered spontaneous induction of leaf lesions. Transgenic plants accumulated high amounts of H2O2, with catalase activity lower than that in the wild type. nNOS transgenic plants contained high levels of salicylic acid (SA), and they induced an array of SA-, jasmonic acid (JA)-, and/or ethylene (ET)-related genes. Consequently, NahG co-expression blocked the induction of systemic acquired resistance (SAR)-associated genes in transgenic plants, implying SA is involved in NO-mediated induction of SAR genes. The transgenic plants exhibited enhanced resistance to a spectrum of pathogens, including bacteria, fungi, and viruses. Our results suggest a highly ranked regulatory role for NO in SA-, JA-, and/or ET-dependent pathways that lead to disease resistance.
URI
https://scholarworks.unist.ac.kr/handle/201301/9999
URL
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84870380415
DOI
10.1007/s10059-012-0213-0
ISSN
1016-8478
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BME_Journal Papers
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