Antimicrobial Terpenes Suppressed the Infection Process of Phytophthora in Fennel-Pepper Intercropping System.
Antimicrobial Terpenes Suppressed the Infection Process of Phytophthora in Fennel-Pepper Intercropping System.
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DOI：
10.3389/fpls.2022.890534
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发表时间：
2022
影响因子：
5.6
通讯作者：
Liu, Yixiang
中科院分区：
文献类型：
--
作者：
Yang, Yuxin;Li, Ying;Mei, Xinyue;Yang, Min;Huang, Huichuan;Du, Fei;Wu, Jiaqing;He, Yiyi;Sun, Junwei;Wang, Haining;He, Xiahong;Zhu, Shusheng;Li, Yingbin;Liu, Yixiang
关键词：
非寄主根系与病原菌之间的相互作用可能是间作系统抑制土传病原菌的关键。在生物多样性栽培中，茴香可以与多种其他植物间作以抑制土传病原体。然而，茴香根分泌物中参与茴香根与病原菌相互作用的关键化合物尚不清楚。在这里，温室试验证实，与茴香间作可抑制辣椒疫霉引起的辣椒疫病。实验结果表明，茴香根和根分泌物可以通过吸引游动孢子、抑制游动孢子的运动和囊孢子的萌发，有效地干扰根际土壤浓度下辣椒辣椒粉的侵染过程。在茴香根际土壤和根分泌物中发现了5种萜类化合物（d -柠檬烯、雌二醇、茴香脑、γ -萜烯和β -月桂烯）对辣椒粉感染有干扰作用。d -柠檬烯与游动孢子具有正向趋化作用，5种萜烯混合物对辣椒辣椒病菌的侵染过程表现出较强的协同作用，尤其是对游动孢子的破裂。此外，这五种萜烯化合物还能诱导活性氧（ROS）在菌丝中的积累，尤其是茴香醚。活性氧积累可能是萜烯类化合物的抗菌机制之一。综上所述，我们认为茴香根分泌的萜类化合物在该间作系统中对疫霉病的抑制起关键作用。
The interactions between non-host roots and pathogens may be key to the inhibition of soilborne pathogens in intercropping systems. Fennel (Foeniculum vulgare) can be intercropped with a wide range of other plants to inhibit soilborne pathogens in biodiversity cultivation. However, the key compounds of fennel root exudates involved in the interactions between fennel roots and pathogens are still unknown. Here, a greenhouse experiment confirmed that intercropping with fennel suppressed pepper (Capsicum annuum) blight disease caused by Phytophthora capsici. Experimentally, the roots and root exudates of fennel can effectively interfere with the infection process of P. capsici at rhizosphere soil concentrations by attracting zoospores and inhibiting the motility of the zoospores and germination of the cystospores. Five terpene compounds (D-limonene, estragole, anethole, gamma-terpenes, and beta-myrcene) that were identified in the fennel rhizosphere soil and root exudates were found to interfere with P. capsica infection. D-limonene was associated with positive chemotaxis with zoospores, and a mixture of the five terpene compounds showed a strong synergistic effect on the infection process of P. capsici, especially for zoospore rupture. Furthermore, the five terpene compounds can induce the accumulation of reactive oxygen species (ROS), especially anethole, in hyphae. ROS accumulation may be one of the antimicrobial mechanisms of terpene compounds. Above all, we proposed that terpene compounds secreted from fennel root play a key role in Phytophthora disease suppression in this intercropping system.
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影响因子：
4.5
作者：
HWANG, BK;KIM, CH
通讯作者：
KIM, CH
影响因子：
4.6
作者：
Guimaraes, Aline Cristina;Meireles, Leandra Martins;Scherer, Rodrigo
通讯作者：
Scherer, Rodrigo
影响因子：
64.8
作者：
Bai, Yang;Mueller, Daniel B.;Schulze-Lefert, Paul
通讯作者：
Schulze-Lefert, Paul
DOI：
10.1083/jcb.201102095
发表时间：
2011-07-11
期刊：
The Journal of cell biology
影响因子：
--
作者：
Finkel T
通讯作者：
Finkel T
DOI：
10.1073/pnas.0704801105
发表时间：
2008-04-22
影响因子：
11.1
作者：
Flombaum, Pedro;Sala, Osvaldo E.
通讯作者：
Sala, Osvaldo E.