2004
DOI: 10.1007/s00425-004-1253-2
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Characterization of a WRKY transcription factor expressed in late torpedo-stage embryos of Solanum chacoense

Abstract: A novel WRKY-like transcription factor was isolated from a screen for weakly expressed mRNAs in ovules in the self-incompatible wild potato species Solanum chacoense Bitt. This protein, named ScWRKY1, consisted of 525 amino acids and can be classified as a WRKY group-I member, having two WRKY domains. It is expressed at low levels in stems, roots, and petals, and expressed at much higher levels in leaves. Interestingly, although barely detectable in developing seeds, it is strongly and transiently expressed in… Show more

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Cited by 148 publications
(90 citation statements)
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“…The WRKY superfamily of plant transcriptional factors has been implicated in a variety of physiological and developmental processes unique to plants, including leaf senescence (28,29), trichome initiation (30), and embryo morphogenesis (31). The WRKY domain functions through direct interactions with the W-box domain in the promoter region of downstream gene targets (23).…”
Section: Discussion Evolution Of Sbwrky Orthologs In Two Sorghum Specmentioning
confidence: 99%
“…The WRKY superfamily of plant transcriptional factors has been implicated in a variety of physiological and developmental processes unique to plants, including leaf senescence (28,29), trichome initiation (30), and embryo morphogenesis (31). The WRKY domain functions through direct interactions with the W-box domain in the promoter region of downstream gene targets (23).…”
Section: Discussion Evolution Of Sbwrky Orthologs In Two Sorghum Specmentioning
confidence: 99%
“…Analyses of plant databases have revealed the existence of more than 500 WRKY ESTs identified from various tissue sources, including roots, leaves, inflorescences, seeds and vascular tissue (Eulgem et al 2000). There are also reports in various plant species that some members of the WRKY family play key roles in plant development, such as during morphogenesis (Johnson et al 2002), embryo development (Lagace and Matton 2004) and senescence (Gregersen and Holm 2007). The constitutive expression of WRKY45 genes in wheat and rice suggests that these genes might also play an important role, not only under conditions of stress but also during normal plant development.…”
Section: Discussionmentioning
confidence: 99%
“…There are 74 members of this gene family in Arabidopsis and 109 in rice (Eulgem and Somssich 2007;Ross et al 2007). They are believed to be involved in regulation of several physiological processes in plants, such as immunity (Pandey and Somssich 2009), embryogenesis (Lagacé and Matton 2004), hormonal signaling (Zhang et al 2004;Xie et al 2005), trichome and seed coat development (Johnson et al 2002), regulation of biosynthesis pathways (Xu et al 2004), and senescence (Lin and Wu 2004;Buchanan-Wollaston et al 2005). WRKY transcription factors play a role in plant immunity by regulating the expression of defense response genes (Eulgem et al 2000;Heise et al 2002).…”
Section: Discussionmentioning
confidence: 99%