Induction of systemic resistance in tomato against Botrytis cinerea by N-decanoyl-homoserine lactone via jasmonic acid signaling
Induction of systemic resistance in tomato against Botrytis cinerea by N-decanoyl-homoserine lactone via jasmonic acid signaling
复制标题
N-癸酰基-高丝氨酸内酯通过茉莉酸信号传导诱导番茄对灰葡萄孢的全身抗性。
DOI：
10.1007/s00425-018-2860-7
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发表时间：
2018-05-01
期刊：
影响因子：
4.3
通讯作者：
Shi, Kai
中科院分区：
文献类型：
--
作者：
Hu, Zhangjian;Shao, Shujun;Shi, Kai
N-癸酰高丝氨酸内酯可激活番茄植物对灰霉病菌的系统抗性，这在很大程度上依赖于茉莉酸生物合成和信号转导途径。根际细菌分泌 N-酰化高丝氨酸内酯 (AHL)，这是一种专门的群体感应信号分子，在与细菌通讯时协调其种群密度。 真核宿主。 AHL 作为低分子量配体，可以被植物感知并促进宿主对叶部病原体的抵抗力。在这项研究中，我们报道了 N-癸酰高丝氨酸内酯 (DHL)，它是 AHL 的一种，可诱导番茄植物的系统免疫并保护宿主生物体免受坏死性真菌灰葡萄孢 (Botrytis cinerea) 的侵害。经过 DHL 处理后，番茄内源茉莉酸 (JA) 生物合成（而不是水杨酸生物合成）和信号转导显着激活。引人注目的是，DHL 诱导的针对灰霉病菌的系统抗性在番茄 JA 生物合成突变体 spr2 和 JA 信号基因沉默植物中被阻断。我们的研究结果强调了 DHL 在对经济上重要的坏死性营养病原体的系统抵抗中的作用，并表明 DHL 诱导的针对灰霉病菌的免疫在很大程度上依赖于 JA 信号通路。操纵 DHL 诱导的抗病性是一种有吸引力的疾病管理策略，可用于增强不同植物物种的抗病性。
N-decanoyl-homoserine lactone activates plant systemic resistance against Botrytis cinerea in tomato plants, which is largely dependent on jasmonic acid biosynthesis and signal transduction pathways.Rhizosphere bacteria secrete N-acylated-homoserine lactones (AHLs), a type of specialized quorum-sensing signal molecule, to coordinate their population density during communication with their eukaryotic hosts. AHLs behave as low molecular weight ligands that are sensed by plants and promote the host's resistance against foliar pathogens. In this study, we report on N-decanoyl-homoserine lactone (DHL), which is a type of AHL that induces systemic immunity in tomato plants and protects the host organism against the necrotrophic fungus Botrytis cinerea. Upon DHL treatment, tomato endogenous jasmonic acid (JA) biosynthesis (rather than salicylic acid biosynthesis) and signal transduction were significantly activated. Strikingly, the DHL-induced systemic resistance against B. cinerea was blocked in the tomato JA biosynthesis mutant spr2 and JA signaling gene-silenced plants. Our findings highlight the role of DHL in systemic resistance against economically important necrotrophic pathogens and suggest that DHL-induced immunity against B. cinerea is largely dependent on the JA signaling pathway. Manipulation of DHL-induced resistance is an attractive disease management strategy that could potentially be used to enhance disease resistance in diverse plant species.