Phytohormone profiling in relation to osmotic adjustment in NaCl-treated plants of the halophyte tomato wild relative species Solanum chilense comparatively to the cultivated glycophyte Solanum lycopersicum
Phytohormone profiling in relation to osmotic adjustment in NaCl-treated plants of the halophyte tomato wild relative species Solanum chilense comparatively to the cultivated glycophyte Solanum lycopersicum
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DOI：
10.1016/j.plantsci.2017.02.006
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发表时间：
2017-05-01
期刊：
影响因子：
5.2
通讯作者：
Lutts, Stanley
中科院分区：
文献类型：
--
作者：
Gharbi, Emna;Martinez, Juan-Pablo;Lutts, Stanley
采用整体方法研究了盐胁迫下番茄及其近缘盐生植物智利茄（Solanum chilense）的渗透调节激素水平。使植物经受125mM NaCl 7天。与S.番茄，不仅是矿物质营养，而且还关于渗透调节和植物激素谱的模式。渗透调节的程度以S. chilense比S.番茄K+和Na+是S. chilense，分别占渗透势的47%和60%。相比之下，虽然盐诱导的脯氨酸积累在S. lycopersicum比S.智利人。这两个物种也不同的激素状态下的盐度和浓度的大多数激素化合物的浓度较高的S。chilense比S.番茄水杨酸、乙烯和细胞分裂素与渗透势呈显著正相关。而这些激素与S. chilense的渗透调节呈负相关。番茄这些结果表明，利用无机离子作为营养物质的能力可能提高了智利藻的耐盐性，植物激素可能参与了这一过程。(C)2017爱思唯尔B.V.保留所有权利。
A holistic approach was used to investigate the hormonal profile in relation with osmotic adjustment under salinity in Solanum lycopersicum and its halophyte wild relative Solanum chilense. Plants were subjected to 125 mM NaCI for 7 days. Solanum chilense displayed a contrasting behaviour comparatively to S. lycopersicum, not only for mineral nutrition, but also regarding the modalities of osmotic adjustment and phytohormonal profiling. The extent of osmotic adjustment was higher in S. chilense than in S. lycopersicum. Ions K+ and Na+ were the major contributors of osmotic adjustment in S. chilense, accounting respectively for 47 and 60% of osmotic potential. In contrast the contributions of proline and soluble sugars remained marginal for the two species although salt-induced accumulation of proline was higher in S. lycopersicum than in S. chilense. Both species also differed for their hormonal status under salinity and concentrations of most hormonal compounds were higher in S. chilense than in S. lycopersicum. Interestingly, salicylic acid, ethylene and cytokinins were positively correlated with osmotic potential in S. chilense under salinity while these hormones were negatively correlated with osmotic adjustment in S. lycopersicum. Our results suggested that the capacity to use inorganic ions as osmotica may improve salt resistance in S.chilense and that phytohormones could be involved in this process. (C) 2017 Elsevier B.V. All rights reserved.