LED Blue Light-induced changes in phenolics and ethylene in citrus fruit: Implication in elicited resistance against Penicillium digitatum infection
LED Blue Light-induced changes in phenolics and ethylene in citrus fruit: Implication in elicited resistance against Penicillium digitatum infection
复制标题
DOI：
10.1016/j.foodchem.2016.09.089
复制
发表时间：
2017-03-01
期刊：
影响因子：
8.8
通讯作者：
Lafuente, Maria T.
中科院分区：
文献类型：
--
作者：
Ballester, Ana-Rosa;Lafuente, Maria T.
目的是调查是否LED蓝光（LBL）诱导甜橙酚类物质和乙烯产生的变化，以及它们是否参与LBL引起的柑橘果实对最重要的采后病原菌（指状青霉）的抗性。还测定了诱导抗性过程中苯丙烷类和乙烯生物合成途径相关基因的表达。在60-630 μ mol m（-2）s（-1）范围内使用不同的LBL（波长450 nm）量子通量。HPLC分析表明，苯丙素类化合物的最相关增加发生在滨蒿内酯中，在将果实暴露于非常高的量子通量（630 μ mol m（-2）s（-1））18小时后3天，滨蒿内酯显著增加。然而，苯丙素类，包括滨蒿内酯，LBL诱导的抗性的关键因素。参与乙烯生物合成的基因受到LBL的差异调节。乙烯是不参与引发的电阻，虽然高LBL水平增加乙烯生产仅在1小时。(C)2016作者爱思唯尔有限公司出版
The objective was to investigate whether LED Blue Light (LBL) induces changes in phenolics and ethylene production of sweet oranges, and whether they participate in LBL-elicited resistance against the most important postharvest pathogen (Penicillium digitatum) of citrus fruit. The expression of relevant genes of the phenylpropanoid and ethylene biosynthetic pathways during elicitation of resistance was also determined. Different LBL (wavelength 450 nm) quantum fluxes were used within the 60-630 mu mol m(-2) s(-1) range. The HPLC analysis showed that the most relevant increase in phenylpropanoids occurred in scoparone, which markedly increased 3 days after exposing fruits to a very high quantum flux (630 mu mol m(-2) s(-1)) for 18 h. However, phenylpropanoids, including scoparone, were not critical factors in LBL-induced resistance. The genes involved in ethylene biosynthesis were differentially regulated by LBL. Ethylene is not involved in elicited resistance, although high LBL levels increased ethylene production in only 1 h. (C) 2016 The Authors. Published by Elsevier Ltd.