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2011 | 33 | 3 |

Tytuł artykułu

A role for Ethylene-Insensitive 2 gene in the regulation of the ultraviolet-B response in Arabidopsis

Warianty tytułu

Języki publikacji

EN

Abstrakty

EN
The Arabidopsis Ethylene-Insensitive 2 (EIN2) gene was shown to be involved in the regulation of abiotic and biotic stresses, such as ozone stress, high salt, oxidative stress, lead and disease resistances. However, it is unclear whether EIN2 plays a role in mediating the ultraviolet (UV)-B response in Arabidopsis. Here, we show that EIN2 is involved in the regulation of the UV-B response. The EIN2 expression was repressed by UV-B exposure, and ein2-1 mutant plants were more tolerant to UV-B than wild-type plants, as indicated by analysis of survival rates. Significant higher increases in flavonoids and anthocyanins were detected in ein2-1 plants than in wild-type plants treated with or without UV-B treatment, which was associated, at least in part, with constitutively increased transcript levels of two key genes CHALCONE SYNTHASE (CHS) and CINNAMATE 4-HYDROXYLASE (C4H) involved in the biosynthesis pathway of flavonoid and anthocyanins. These results suggest that EIN2 mediates the UV-B response, at least in part, via the modulation of expression of CHS and C4H genes.

Słowa kluczowe

Wydawca

-

Rocznik

Tom

33

Numer

3

Opis fizyczny

p.1025-1030,fig.,ref.

Twórcy

autor
  • School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009, Anhui, People's Republic of China
autor
  • School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009, Anhui, People's Republic of China
autor
  • School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009, Anhui, People's Republic of China
autor
  • Anhui Agriculture Academy Horticulture Institute. Hefei 230031, Anhui, People's Republic of China
autor
  • Anhui Agriculture Academy Horticulture Institute. Hefei 230031, Anhui, People's Republic of China
autor
  • School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009, Anhui, People's Republic of China
autor
  • School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009, Anhui, People's Republic of China
autor
  • School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009, Anhui, People's Republic of China

Bibliografia

  • Alonso JM, Hirayama T, Roman G, Nourizadeh S, Ecker JR (1999) EIN2, a bifunctional transducer of ethylene and stress responses in Arabidopsis. Science 284:2148–2152
  • Bharti AK, Khurana JP (1997) Mutants of Arabidopsis as tools to understand the regulation of phenylpropanoid pathway and UVB protection mechanisms. Photochem Photobiol 65:765–776
  • Bieza K, Lois R (2001) An Arabidopsis mutant tolerant to lethal ultraviolet-B levels shows constitutively elevated accumulation of flavonoids and other phenolics. Plant Physiol 126:1105–1115
  • Cakırlar H, Ciçek N, Fedina I, Georgieva K, Doğru A, Velitchkova M (2008) NaCl induced cross-acclimation to UV-B radiation in four Barley (Hordeum vulgare L.) cultivars. Acta Physiol Plant 30:561–567
  • Cao SQ, Jiang ST, Zhang RX (2006) Evidence for a role of EIN2 gene in the regulation of the oxidative stress response in Arabidopsis. Acta Physiol Plant 28:417–425
  • Cao SQ, Chen ZY, Liu GQ, Jiang L, Yuan HB, Ren G, Bian XH, Jian HY, Ma XL (2009) The Arabidopsis Ethylene-Insensitive 2 gene is required for lead resistance. Plant Physiol Biochem 47:308–312
  • Chappell J, Hahlbrock K (1984) Transcription of plant defense genes in response to UV light or fungal elicitor. Nature 311:76–78
  • Frohnmeyer H, Staiger D (2003) Ultraviolet-B radiation-mediated responses in plants. Balancing damage and protection. Plant Physiol 133:1420–1428
  • Guzmán P, Ecker JR (1990) Exploiting the triple response of Arabidopsis to identify ethylene-related mutants. Plant Cell 2:513–523
  • Hahlbrock K, Scheel D (1989) Physiology and molecular biology of phenylpropanoid metabolism. Annu Rev Plant Physiol Plant Mol Biol 40:347–369
  • Jansen MAK, Gaba V, Greenberg BM (1998) Higher plants and UVB radiation: balancing damage, repair and acclimation. Trends Plant Sci 3:131–135
  • Jin H, Cominelli E, Bailey P, Parr A, Mehrtens F, Jones J, Tonelli C, Weisshaar B, Martin C (2000) Transcriptional repression by AtMYB4 controls production of UV-protecting sunscreens in Arabidopsis. EMBO J 19:6150–6161
  • Kliebenstein DJ, Lim JE, Landry LG, Last RL (2002) Arabidopsis UVR8 regulates ultraviolet-B signal transduction and tolerance and contains sequence similarity to human regulator of chromatin condensation 1. Plant Physiol 130:234–243
  • Landry LG, Chapple CCS, Last RL (1995) Arabidopsis mutants lacking phenolic sunscreens exhibit enhanced ultraviolet-B injury and oxidative damage. Plant Physiol 109:1159–1166
  • Li J, Ou-Lee TM, Raba R, Amundson RG, Last RL (1993) Arabidopsis flavonoid mutants are hypersensitive to UV-B irradiation. Plant Cell 5:171–179
  • Lois R, Buchanan BB (1994) Severe sensitivity to ultraviolet radiation in an Arabidopsis mutant deficient in flavonoid accumulation. Planta 4:504–509
  • Ormrod DP, Landry LG, Conklin PL (1995) Shortterm UV-B radiation and ozone exposure effects on aromatic secondary metabolite accumulation and shoot growth of flavonoid dericient Arabidopsis mutants. Physiol Plant 93:602–610
  • Thomma BP, Eggermont K, Tierens KF, Broekaert WF (1999) Requirement of functional ethylene-insensitive 2 gene for efficient resistance of Arabidopsis to infection by Botrytis cinerea. Plant Physiol 121:1093–1102
  • Wang YN, Liu C, Li KX, Sun FF, Hu HZ, Li X, Zhao YK, Han CY, Zhang WS, Duan YF, Liu MY, Li X (2007) Arabidopsis EIN2 modulates stress response through abscisic acid response pathway. Plant Mol Bio 64:633–644
  • Yuan JS, Reed A, Chen F, Stewart CN (2006) Statistical analysis of real-time PCR data. BMC Bioinformatics 7:85
  • Zhao JF, Zhang WH, Zhao Y, Gong XM, Guo L, Zhu GL, Wang XC, Gong ZZ, Schumaker KS, Guo Y (2007) SAD2, an importin β-Like protein, is required for UV-B response in Arabidopsis by mediating MYB4 nuclear trafficking. Plant Cell 19:3805–3818

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Bibliografia

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