Riboflavin induces resistance against Botrytis cinerea in bean, but not in tomato, by priming for a hydrogen peroxide-fueled resistance response
Riboflavin induces resistance against Botrytis cinerea in bean, but not in tomato, by priming for a hydrogen peroxide-fueled resistance response
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DOI：
10.1016/j.pmpp.2010.08.001
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发表时间：
2010-12-01
影响因子：
2.7
通讯作者：
Hofte, Monica
中科院分区：
文献类型：
--
作者：
Azami-Sardooei, Zabihollah;Franca, Soraya C.;Hofte, Monica
核黄素（维生素B2）可以作为植物抵抗生物胁迫的激活剂。在这里，我们展示了外源核黄素对菜豆和番茄抗灰葡萄孢的效果。在豆类中，核黄素的浓度为10至1000亩M减少了约25%的传播病变的数量相比，控制植物。然而，在番茄中，核黄素在任何测试浓度下都不能控制病原体。过氧化氢积累检测核黄素处理的植物早在4小时接种后（HPI），而在番茄叶盘，没有过氧化氢积累检测到之前48 HPI核黄素治疗。核黄素处理的番茄植株中未观察到对脂氧合酶活性的刺激，而茉莉酸酯可以触发脂氧合酶活性和对B的抗性。菜豆和番茄中的灰霉病。核黄素可以引发豆类植物过氧化氢的早期积累，并在受到B的挑战时促进脂氧合酶途径的激活。灰叶(C)2010爱思唯尔有限公司版权所有。
Riboflavin (vitamin B2) can act as an activator of plant resistance against biotic stress. Here, we demonstrate the effect of exogenous application of riboflavin on bean and tomato resistance against Botrytis cinerea. In bean, riboflavin applied at a concentration of 10 up to 1000 mu M reduced the number of spreading lesions by approximately 25% compared to control plants. In tomato, however, riboflavin was not able to control the pathogen at any concentration tested. Hydrogen peroxide accumulation was detected in bean leaf discs of riboflavin-treated plants as early as 4 h post inoculation (hpi) while in tomato leaf discs, no hydrogen peroxide accumulation was detected prior to 48 hpi irrespective of riboflavin treatment. Stimulation of lipoxygenase activity was observed in bean, but not in tomato plants treated with riboflavin, while jasmonate could trigger lipoxygenase activity and resistance to B. cinerea in both bean and tomato. Riboflavin may prime bean plants for earlier accumulation of hydrogen peroxide and prompt activation of the lipoxygenase pathway when challenged with B. cinerea. (C) 2010 Elsevier Ltd. All rights reserved.