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L-Ascorbate biosynthesis in peach: cloning of six L-galactose pathway-related genes and their expression during peach fruit development

Tipo de material: TextoTextoSeries ; Physiologia Plantarum, 136(2), p.139-149, 2009Trabajos contenidos:
  • Imaia, T
  • Ban, Y
  • Terakami, S
  • Yamamoto, T
  • Moriguchi, T
Recursos en línea: Resumen: The L-ascorbate (AsA)content and the expression of six L-galactose pathwayrelated genes were analyzed in peach flesh during fruit development. Fluctuation of AsA during peach fruit development was divided into four phases based on the overall total AsA (T-AsA)content per fruit: AsA I, 0-36 days after full bloom (DAFB); AsA II, 37-65 DAFB; AsA III, 66-92 DAFB and AsA IV, 93-112 DAFB. Phase AsA III was a lag phase for AsA accumulation, but did not coincide with the lag phase for fruit development. The T-AsA concentration was highest at the early stage until 21 DAFB [2-3 ìmol per gram of fresh weight (g.1 FW)], and decreased to 1/4 and 1/15 of this value at 50 and 92 DAFB, respectively. T-AsA then remained at 0.15-0.20 ìmol g.1 FW until harvest at 112 DAFB. More than 90
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The L-ascorbate (AsA)content and the expression of six L-galactose pathwayrelated genes were analyzed in peach flesh during fruit development. Fluctuation of AsA during peach fruit development was divided into four phases based on the overall total AsA (T-AsA)content per fruit: AsA I, 0-36 days after full bloom (DAFB); AsA II, 37-65 DAFB; AsA III, 66-92 DAFB and AsA IV, 93-112 DAFB. Phase AsA III was a lag phase for AsA accumulation, but did not coincide with the lag phase for fruit development. The T-AsA concentration was highest at the early stage until 21 DAFB [2-3 ìmol per gram of fresh weight (g.1 FW)], and decreased to 1/4 and 1/15 of this value at 50 and 92 DAFB, respectively. T-AsA then remained at 0.15-0.20 ìmol g.1 FW until harvest at 112 DAFB. More than 90

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