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2004•Biologia PlantarumOpen access

Heat Shock Induces Programmed Cell Death in Wheat Leaves

Tao Fan, Tim Xing

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Abstract

Programmed cell death (PCD) was triggered in wheat leaves by a heat treatment (42 °C). This treatment caused DNA fragmentation as shown in DNA laddering analysis and in terminal deoxynucleotidyl transferase-mediated deoxyuridine-5'-triphosphate (dUTP) nick end labeling (TUNEL) analysis. Methanol and acetone treatment of leaves significantly blocked PCD. Western analysis indicated that a 65 kDa poly(ADP-ribose) polymerase-like protein was degraded during the treatment. However, high temperature (80 °C) treatment caused necrosis but not PCD.

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Programmed cell death (PCD) was triggered in wheat leaves by a heat treatment (42 °C). This treatment caused DNA fragmentation as shown in DNA laddering analysis and in terminal deoxynucleotidyl transferase-mediated deoxyuridine-5'-triphosphate (dUTP) nick end labeling (TUNEL) analysis. Methanol and acetone treatment of leaves significantly blocked PCD. Western analysis indicated that a 65 kDa poly(ADP-ribose) polymerase-like protein was degraded during the treatment. However, high temperature (80 °C) treatment caused necrosis but not PCD.

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Available abstract

Programmed cell death (PCD) was triggered in wheat leaves by a heat treatment (42 °C). This treatment caused DNA fragmentation as shown in DNA laddering analysis and in terminal deoxynucleotidyl transferase-mediated deoxyuridine-5'-triphosphate (dUTP) nick end labeling (TUNEL) analysis. Methanol and acetone treatment of leaves significantly blocked PCD. Western analysis indicated that a 65 kDa poly(ADP-ribose) polymerase-like protein was degraded during the treatment. However, high temperature (80 °C) treatment caused necrosis but not PCD.

Key concepts: DNA laddering, TUNEL assay, Terminal deoxynucleotidyl transferase, Programmed cell death, DNA fragmentation, Nick translation, Apoptosis, Molecular biology

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