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Water stress, ammonium, and leaf senescence in detached rice leaves

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Abstract

Ammonium accumulation in relation to water stress-promoted senescence of detached rice leaves was investigated. The effect of water stress on the senescence of detached rice leaves is associated with the accumulation of ammonium. The accumulation of ammonium in detached rice leaves by water stress is attributed to a decrease in glutamine synthetase activity. Ammonium accumulation in detached rice leaves, induced by water stress, was accompanied by an increase in tissue sensitivity to ethylene which, in turn, accelerated leaf senescence.

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Authors and Affiliations

  1. Department of Agronomy, National Taiwan University, Taipei, Taiwan, Republic of China

    Jaw-Neng Lin & Ching Huei Kao

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  1. Jaw-Neng Lin
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  2. Ching Huei Kao
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Lin, JN., Kao, C.H. Water stress, ammonium, and leaf senescence in detached rice leaves. Plant Growth Regulation 25, 165–169 (1998). https://doi.org/10.1023/A:1006014618721

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  • DOI: https://doi.org/10.1023/A:1006014618721

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