書誌事項
- タイトル別名
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- Salinity Stress Affects Assimilate Metabolism at the Gene-expression Level during Fruit Development and Improves Fruit Quality in Tomato (Solanum lycopersicum L.)
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抄録
Irrigation with moderate salinity stress in a hydroponic system improves the inner and outer fruit quality of tomato (Solanum lycopersicon Mill. ‘House Momotaro’). We investigated the effects of 50 mM NaCl in a hydroponic solution on the levels of various metabolites, including soluble sugars, amino acids, and organic acids, and on the expression levels of salinity-responsive genes during fruit development. Under salinity, Brix (%), surface color density, and flesh firmness of the fruit were significantly enhanced, whereas fruit enlargement was suppressed. Salinity stress strongly promoted the accumulation of sucrose, citrate, malate, and glutamate, and slightly promoted glucose and γ-amino butyric acid in red fruit. At the transcriptional level, up-regulation of ethylene-synthetic 1-aminocyclopropane-1-carboxylate oxidase and down-regulation of photosynthetic chlorophyll a/b binding protein Cab-1B occurred earlier in stressed fruit than in control fruit. Additionally, the carotenoid-biosynthesis regulatory gene, Phytoene synthase 1, and phosphoenolpyruvate carboxykinase (PEPCK) were up-regulated under moderate salinity in the red stage. The expression profiles of these genes in stress-treated fruit were consistent with the changes in fruit quality, including earlier ripening and a deeper red color. Furthermore, the up-regulation of PEPCK suggested that gluconeogenesis is involved in the accumulation of sugars in salinity-stressed fruit.<br>
収録刊行物
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- Journal of the Japanese Society for Horticultural Science
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Journal of the Japanese Society for Horticultural Science 77 (1), 61-68, 2008
一般社団法人 園芸学会
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詳細情報 詳細情報について
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- CRID
- 1390282680265992704
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- NII論文ID
- 110006547035
- 130004951541
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- NII書誌ID
- AA12177046
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- ISSN
- 1882336X
- 18823351
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- NDL書誌ID
- 9332081
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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
- NDL-Digital
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可