Exogenous Proline Mitigates the Inhibition of Growth of Nicotiana tabacum Cultured Cells under Saline Conditions
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説明
Abstract The addition of exogenous proline (10 mm) to Na100-saline culture medium, modified LS medium (Linsmaier and Skoog 1965: Physiol. Plant., 18, 100–127) with 100 mm NaCl promoted the growth of tobacco (Nicotiana tabacum L., cv. Bright Yellow-2) suspension cells unadapted to salt stress without maintaining a high ratio of K+ to Na+ ions under salinity conditions. The addition of exogenous glutamic acid or alanine were not comparable to that of exogenous proline. The proline contents of the NaCl-unadapted cells became much higher when the cells were grown in Na100-saline culture medium with 10 mm proline than when the cells were cultured without proline. The accumulation of K+, Na+, counter ions was sufficient to compensate for the increase of the water potential of the cells caused by salinity. These results suggest that exogenous proline does not act as a nitrogen store and that proline may act as a protectant for enzymes and membranes against salt inactivation rather than as a compatible solute in ...
収録刊行物
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- Soil science & plant nutrition
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Soil science & plant nutrition 46 (1), 257-263, 2000-03
Tokyo : Japanese Society of Soil Science and Plant Nutrition
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詳細情報 詳細情報について
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- CRID
- 1522825129742413952
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- NII論文ID
- 110001717855
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- NII書誌ID
- AA00844314
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- ISSN
- 00380768
- 17470765
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- NDL書誌ID
- 5300092
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- 本文言語コード
- en
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- NDL 雑誌分類
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- ZR7(科学技術--農林水産--農産)
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