Seasonal induction of alternative principal pathway for rose flower scent.
Seasonal induction of alternative principal pathway for rose flower scent.
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DOI：
10.1038/srep20234
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发表时间：
2016-02-01
影响因子：
4.6
通讯作者：
Watanabe N
中科院分区：
文献类型：
--
作者：
Hirata H;Ohnishi T;Tomida K;Ishida H;Kanda M;Sakai M;Yoshimura J;Suzuki H;Ishikawa T;Dohra H;Watanabe N
对季节变化的生态适应经常在植物和动物的表型性状中观察到，这些适应通常通过不同生化终产物的产生来表达。在这项研究中，在不改变最终产品的情况下，在生化途径中观察到生态适应。我们提出了玫瑰中特征花香化合物 2-苯基乙醇 (2PE) 的替代主要途径。新途径在夏季季节性诱导，作为一种热适应，使用玫瑰苯丙酮酸脱羧酶（RyPPDC）作为一种新型酶。 RyPPDC 转录水平和由此产生的 2PE 产量在高温下随时间增加。新的夏季途径产生的 2PE 水平比之前已知的途径高出几个数量级。我们的结果表明，这里确定的替代主要途径是季节性适应，以管理夏季玫瑰波动性减弱的情况。
Ecological adaptations to seasonal changes are often observed in the phenotypic traits of plants and animals, and these adaptations are usually expressed through the production of different biochemical end products. In this study, ecological adaptations are observed in a biochemical pathway without alteration of the end products. We present an alternative principal pathway to the characteristic floral scent compound 2-phenylethanol (2PE) in roses. The new pathway is seasonally induced in summer as a heat adaptation that uses rose phenylpyruvate decarboxylase (RyPPDC) as a novel enzyme. RyPPDC transcript levels and the resulting production of 2PE are increased time-dependently under high temperatures. The novel summer pathway produces levels of 2PE that are several orders of magnitude higher than those produced by the previously known pathway. Our results indicate that the alternative principal pathway identified here is a seasonal adaptation for managing the weakened volatility of summer roses.