Detail Signals from Chloroplasts Converge to Regulate Nuclear Gene Expression   Oleh:  Koussevitzky, Shai ; Nott, Ajit ; Mockler, Todd C. ; Hong, Fangxin ; Sachetto-Martins, Gilberto ; Surpin, Marci ; Lim, Jason ; Mittler, Ron ; Chory, Joanne Jenis: Article from Bulletin/Magazine Dalam koleksi: SCIENCE (keterangan: ada di Proquest) vol. 316 no. 5825 (May 2007), page 715. Topik: Plant Science Ketersediaan Perpustakaan FK Nomor Panggil: S01.K.2007.05 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada     Lihat Detail Induk Isi artikel Plastid-to-nucleus retrograde signaling coordinates nuclear gene expression with chloroplast function and is essential for the photoautotrophic life-style of plants. Three retrograde signals have been described, but little is known of their signaling pathways. We show here that GUN1, a chloroplast-localized pentatricopeptide-repeat protein, and ABI4, an Apetala 2 (AP1Hype transcription factor, are common to all three pathways. ABI4 binds the promoter of a retrograde-regulated gene through a conserved motif found in close proximity to a light-regulatory element. We propose a model in which multiple indicators of aberrant plastid function in Arabidopsis are integrated upstream of GUNl within plastids, which leads to ABI4 mediated repression of nuclear-encoded genes. Opini Anda Klik untuk menuliskan opini Anda tentang koleksi ini! Kembali

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