Rice tillering dwarf mutant dwarf3 has increased leaf longevity during darkness-induced senescence or hydrogen peroxide-induced cell death

Haifang Yan, Hiroaki Saika, Masahiko Maekawa, Itsuro Takamure, Nobuhiro Tsutsumi, Junko Kyozuka, Mikio Nakazono

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

Senescence or cell death in plant leaves is known to be inducible by darkness or H2O2. When the Arabidopsis gene MAX2/ORE9 is disrupted, leaf senescence or cell death in response to the above stimuli is delayed. Because the rice (Oryza sativa L.) gene DWARF3 (D3) is orthologous to MAX2/ORE9, we wished to know whether disruption of D3 also results in increased longevity in leaves. We found that darkness-induced senescence or H 2O2-induced cell death in the third leaf [as measured by chlorophyll degradation, membrane ion leakage and expression of senescence-associated genes (SAGs)] in a d3 rice mutant was delayed by 1-3 d compared to that in its reference line Shiokari. Moreover, the mRNA levels of D3, HTD1 and D10, which are orthologs of Arabidopsis MAX2/ORE9, MAX3 and MAX4, respectively, increased during cell death. These results suggest that D3 protein in rice, like MAX2/ORE9 in Arabidopsis, is involved in leaf senescence or cell death.

Original languageEnglish
Pages (from-to)361-366
Number of pages6
JournalGenes and Genetic Systems
Volume82
Issue number4
DOIs
Publication statusPublished - 2007

Fingerprint

Darkness
Cell death
tillering
Hydrogen Peroxide
hydrogen peroxide
cell death
Cell Death
rice
mutants
Arabidopsis
Genes
leaves
rice protein
Plant Leaves
genes
Chlorophyll
Oryza sativa
Oryza
Ions
ions

Keywords

  • d3
  • MAX2/ORE9
  • Oryza sativa
  • Oxidative stress
  • Senescence

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Biochemistry
  • Genetics
  • Genetics(clinical)

Cite this

Rice tillering dwarf mutant dwarf3 has increased leaf longevity during darkness-induced senescence or hydrogen peroxide-induced cell death. / Yan, Haifang; Saika, Hiroaki; Maekawa, Masahiko; Takamure, Itsuro; Tsutsumi, Nobuhiro; Kyozuka, Junko; Nakazono, Mikio.

In: Genes and Genetic Systems, Vol. 82, No. 4, 2007, p. 361-366.

Research output: Contribution to journalArticle

Yan, Haifang ; Saika, Hiroaki ; Maekawa, Masahiko ; Takamure, Itsuro ; Tsutsumi, Nobuhiro ; Kyozuka, Junko ; Nakazono, Mikio. / Rice tillering dwarf mutant dwarf3 has increased leaf longevity during darkness-induced senescence or hydrogen peroxide-induced cell death. In: Genes and Genetic Systems. 2007 ; Vol. 82, No. 4. pp. 361-366.
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