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Titolo:
AKR-deficiency disturbs the balance of some signal transduction pathways in Arabidopsis thaliana
Autore:
Wang, J; Yan, JQ; Zhang, H;
Indirizzi:
Texas Tech Univ, Dept Biol Sci, Lubbock, TX 79409 USA Texas Tech Univ Lubbock TX USA 79409 Dept Biol Sci, Lubbock, TX 79409 USA Zhejiang Univ, Dept Agron, Hangzhou 310027, Peoples R China Zhejiang UnivHangzhou Peoples R China 310027 ou 310027, Peoples R China
Titolo Testata:
PLANT PHYSIOLOGY AND BIOCHEMISTRY
fascicolo: 6, volume: 37, anno: 1999,
pagine: 465 - 471
SICI:
0981-9428(199906)37:6<465:ADTBOS>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
LOW-TEMPERATURE; EXPRESSION; LIGHT; GENE; ANTHOCYANIN; SEEDLINGS; PROTEIN; ENHANCEMENT; STRESS; PLANTS;
Keywords:
anthocyanin; Arabidopsis thaliana; chlorosis; high-intensity light; signal transduction;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Zhang, H Texas Tech Univ, Dept Biol Sci, Lubbock, TX 79409 USA Texas Tech Univ Lubbock TX USA 79409 Sci, Lubbock, TX 79409 USA
Citazione:
J. Wang et al., "AKR-deficiency disturbs the balance of some signal transduction pathways in Arabidopsis thaliana", PL PHYS BIO, 37(6), 1999, pp. 465-471

Abstract

High-intensity light induces anthocyanin production in wild-type Arabidopsis leaves, but this induction is largely abolished in the chlorotic leaf tissues of AKR (ankyrin repeat-containing protein)-deficient plants. The steady-state mRNA levels of three anthocyanin biosynthetic genes, CHI, CHS and DFR, did not increase in response to high-intensity light treatment in chlorotic leaf tissues, whereas they increased several fold in green leaf tissues. There is a good correlation between anthocyanin production and transcript levels of anthocyanin biosynthetic genes, especially DFR, in green leaf tissues. In contrast, the transcripts of TCH2 and TCH3 that encode for calmodulin-related proteins and GPA that encodes for the a subunit of the trimeric G protein were much higher in chlorotic leaf tissues than those in green leaf tissues. These data suggest that the AKR-deficiency could increase gene expression in one signal transduction pathway and at the same time repress gene expression in another signal transduction pathway, which alludes to a possible mechanism for AKR involvement in chloroplast development. (C) Elsevier, Paris.

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Documento generato il 27/10/20 alle ore 05:27:28