Rice tillering dwarf mutant dwarf3 has increased leaf longevity during darkness-induced senescence or hydrogen peroxide-induced cell death
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- Yan Haifang
- Graduate School of Agricultural and Life Sciences, The University of Tokyo
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- Saika Hiroaki
- Graduate School of Agricultural and Life Sciences, The University of Tokyo
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- Maekawa Masahiko
- Research Institute for Bioresources, Okayama University
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- Takamure Itsuro
- Graduate School of Agriculture, Hokkaido University
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- Tsutsumi Nobuhiro
- Graduate School of Agricultural and Life Sciences, The University of Tokyo
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- Kyozuka Junko
- Graduate School of Agricultural and Life Sciences, The University of Tokyo
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- Nakazono Mikio
- Graduate School of Agricultural and Life Sciences, The University of Tokyo
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抄録
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 H2O2-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.<br>
収録刊行物
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- Genes & Genetic Systems
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Genes & Genetic Systems 82 (4), 361-366, 2007
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詳細情報 詳細情報について
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- CRID
- 1390282680451342080
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- NII論文ID
- 10024394884
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- NII書誌ID
- AA11077421
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- ISSN
- 18805779
- 13417568
- http://id.crossref.org/issn/13417568
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- NDL書誌ID
- 9304449
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可