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首页> 外文期刊>Journal of Agricultural and Food Chemistry >Comparative Analyses of Cuticular Waxes on Various Organs of Potato (Solanum tuberosum L.)
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Comparative Analyses of Cuticular Waxes on Various Organs of Potato (Solanum tuberosum L.)

机译：马铃薯各种器官蜡的比较分析（Solanum Tuberosum L.）

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摘要

Complex mixtures of cuticular waxes coat plant surfaces to seal them against environmental stresses, with compositions greatly varying between species and possibly organs. This paper reports comprehensive analyses of the waxes on both above-and below-ground organs of potato, where total wax coverages varied between petals (2.6 mu g/cm(2)), leaves, stems, and tubers (1.8-1.9 mu g/cm(2)), and rhizomes (1.1 mu g/cm(2)). The wax mixtures on above-ground organs were dominated by alkanes, occurring in homologous series of isomeric C-25-C-35 n-alkanes, C-25-C-35 2-methylalkanes, and C-26-C-34 3-methylalkanes. In contrast, below-ground organs had waxes rich in monoacylglycerols (C-22-C-28 aryls) and C-18-C-30 alkyl ferulates, together with fatty acids (rhizomes) or primary alcohols (tubers). The organ-specific wax coverages, compound class distribution, and chain length profiles suggest highly regulated activities of wax biosynthesis enzymes, likely related to organ-specific ecophysiological functions.
机译：复杂的蜡涂层涂层植物表面的混合物密封它们抗环境应力，在物种和可能的器官之间具有大量不同的组合物。本文报告了马铃薯的上下器官和地下机器官上蜡的综合分析，其中瓣（2.6μg/ cm（2）），叶，茎和块茎之间变化的总蜡覆盖物（1.8-1.9μg / cm（2））和根茎（1.1μg/ cm（2））。地上器官上的蜡混合物由烷烃支配，在同源系列异构C-25-C-35 N-烷烃，C-25-C-35 2-甲基烷烃和C-26-C-34 3中发生 - 甲基烷烃。相反，地下器官含有富含单酰基甘油（C-22-C-28芳基）和C-18-C-30烷基的蜡，以及脂肪酸（根茎）或伯醇（块茎）。器官特异性蜡覆盖范围，复合类分布和链长型材表明了蜡生物合成酶的高度监管活动，可能与器官特异性生态学功能有关。

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