Jasmonate action in plant defense against insects

Wang, Jiaojiao; Wu, Dewei; Wang, Youping; Xie, Daoxin

doi:10.1093/jxb/erz174

Cited by 145 publications

(99 citation statements)

References 132 publications

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“…Both active MPKs and TFs regulate the signaling networks by activating or suppressing one or more components in different signaling pathways mediated by (among others) JA, SA, ET and reactive oxygen species (ROS) (Bakshi & Oelmuller, 2014;Hu et al, 2015;Li, Liu, et al, 2019). JA signaling is considered to be the core signaling pathway for triggering plant resistance to herbivores (Ruan et al, 2019;Wang, Wu, Wang, & Xie, 2019), whereas the ETand SA-mediated signaling pathways are multi-faceted players in plant-herbivore interactions (Li, Han, Feng, Yuan, & Huang, 2019;Lu et al, 2014;Ma, Yang, Shi, & Miao, 2020;Zust & Agrawal, 2016). ROS is implicated in plant defense against piercing-sucking herbivores (Hu, Meng Ye, Peng Kuai, and Lingfei Hu contributed equally to this work.…”

Section: Introductionmentioning

confidence: 99%

Suppression of a leucine‐rich repeat receptor‐like kinase enhances host plant resistance to a specialist herbivore

Kuai

et al. 2020

Plant Cell & Environment

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The mechanisms by which herbivores induce plant defenses are well studied. However, how specialized herbivores suppress plant resistance is still poorly understood. Here, we discovered a rice (Oryza sativa) leucine‐rich repeat receptor‐like kinase, OsLRR‐RLK2, which is induced upon attack by gravid females of a specialist piercing‐sucking herbivore, the brown planthopper (BPH, Nilaparvata lugens). Silencing OsLRR‐RLK2 decreases the constitutive activity of mitogen‐activated protein kinase (OsMPK6) and alters BPH‐induced transcript levels of several defense‐related WRKY transcription factors. Moreover, silencing OsLRR‐RLK2 reduces BPH‐induction of jasmonic acid and ethylene but promotes the biosynthesis of both elicited salicylic acid and H2O2; silencing also enhances the production of volatiles emitted from rice plants infested with gravid BPH females. These changes decrease BPH preference and performance in the glasshouse and the field. These findings suggest that OsLRR‐RLK2, by regulating the plant's defense‐related signaling profile, increases the susceptibility of rice to BPH, and that BPH infestation influences the expression of OsLRR‐RLK2, suppressing the resistance of rice to BPH.

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Section: Introductionmentioning

confidence: 99%

Suppression of a leucine‐rich repeat receptor‐like kinase enhances host plant resistance to a specialist herbivore

Kuai

et al. 2020

Plant Cell & Environment

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“…In this study, ClAOS was up-regulated under RR treatment compared with RKN treatment in both leaves and roots (Figure 9), suggesting its important role in RL-induced systemic resistance against RKN infection. AOS is a key enzyme for the biosynthesis of jasmonate, which plays vital roles in responses to various biotic stresses [48][49][50]. In addition, ClAOS possessed many hormone-related cis-elements ( Figure 6) and exhibited more dramatically up-regulated expression in response to JA, SA, and ET than other detected ClHPL genes (Figure 8).…”

Section: Discussionmentioning

confidence: 99%

The CYP74 Gene Family in Watermelon: Genome-Wide Identification and Expression Profiling Under Hormonal Stress and Root-Knot Nematode Infection

Zhou

Guang

et al. 2019

Agronomy

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Allene oxide synthase (AOS) and hydroperoxide lyase (HPL), members of the CYP74 gene family, are branches of the oxylipin pathway and play vital roles in plant responses to a number of stresses. In this study, four HPL genes and one AOS gene were identified in the watermelon genome, which were clustered into three subfamilies (CYP74A, CYP74B and CYP74C). Sequence analysis revealed that most HPL and AOS proteins from various plants contain representative domains, including Helix-I region, Helix-K region (ExxR) and Heme-binding domain. A number of development-, stress-, and hormone-related cis-elements were found in the promoter regions of the ClAOS and ClHPL genes, and the detected ClAOS and ClHPL genes were differentially expressed in different tissues and fruit development stages, as well as in response to various hormones. In addition, red light could enhance the expression of ClAOS in root-knot nematode-infected leaves and roots of watermelon, implying that ClAOS might play a primary role in red light-induced resistance against root-knot nematodes. These findings lay a foundation for understanding the specific function of CYP74 genes in watermelon.Agronomy 2019, 9, 872 2 of 17 isomerization or dehydration of fatty acid hydroperoxides and require neither molecular oxygen nor NAD(P)H-dependent cytochrome P450-reductase [1,2,6].CYP74 enzymes are broadly classified into four subfamilies (CYP74A, CYP74B, CYP74C, and CYP74D) based on their evolutionary heritage and relationship with the diversity of oxylipin structure [6]. AOS and DES members constitute the CYP74A and CYP74D subfamily, respectively, while CYP74B and CYP74C subfamilies contain enzymes with HPL activity [5,7]. In addition, AOS enzymes can be classified into three different types: The first two types can use either 13-hydroperoxide derivatives or 9-hydroperoxide derivatives as the substrate (13-AOS and 9-AOS, respectively), while the third type can use both of them (9/13-AOS) as the substrate [4,8]. Similarly, three types of HPL enzymes named as 13-HPL, 9-HPL, and 9/13-HPL were also reported in a number of plant species [9]. To date, AOS and HPL genes have been cloned and functionally characterized from a number of plant species, such as tomato (Solanum lycopersicum L. (Solanaceae)) [10,11], tobacco (Nicotiana attenuate Torr. ex S.Watson) [12], rice (Oryza sativa L.) [13,14], and barrel medic (Medicago truncatula Gaertn.) [15], whereas DES genes have been isolated in very few plants [16][17][18][19][20]. These findings reveal that plant CYP74 family genes are indispensable for oxylipin biosynthesis, and play important roles in plant growth and development, as well as in plant defense to various abiotic and biotic stresses.Watermelon (Citrullus lanatus (Thunb.) Matsum. & Nakai) is an agricultural crop with high nutritional and economic values, but it is rather susceptible to various biotic and abiotic stresses during growth and development [21]. The root-knot nematodes (RKNs, Meloidogyne incognita) mainly infect the roots of host plants and increase sus...

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“…Both cis-methyl epijasmonate (1R,2S) and trans-methyl jasmonate (1R,2R) are natural key hormones that play essential roles in plant developmental and defense pathways (Wasternack and Hause, 2013). Indeed a recent review stated the crucial roles of jasmonate, that shares common biosynthetic pathway with methyl-jasmonate, in plant defense against insects (Wang J. et al, 2019). Although trans-methyl jasmonate is more stable, the ratio cis/trans-methyl jasmonate varies greatly in plants, 20/80 in undamaged and 60/40 in damaged plant materials, suggesting non-redundant roles of both diastereoisomers (Tamogami et al, 2011).…”

Section: Syntheses Of the Chrysanthemic Moietymentioning

confidence: 99%

Reflexion on Bio-Sourced Mosquito Repellents: Nature, Activity, and Preparation

et al. 2020

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Over the last decades, the geographical distribution of certain mosquito species carrying vector-borne diseases has considerably expanded. They represent a major health concern as they transmit pathogens causing alarming epidemics. In the absence of vaccines for most of the mosquito-borne diseases, the use of topical mosquito repellents is one of the main measures to prevent human-mosquito contacts. Synthetic repellents are the most used mosquito repellents. However, several concerns about their safety for consumers have led to a growing demand of natural alternatives. Here we present an overview of the most commonly used natural-based mosquito repellents: repellent activity, biological action, composition, stereochemical structure (when appropriate) and syntheses, paradoxically far from being eco-friendly. We discuss on future prospective that would combine sustainable chemical processes and synergistic effects promising for the development of natural, safe and efficient topical repellents.

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Jasmonate action in plant defense against insects

Cited by 145 publications

References 132 publications

Suppression of a leucine‐rich repeat receptor‐like kinase enhances host plant resistance to a specialist herbivore

Suppression of a leucine‐rich repeat receptor‐like kinase enhances host plant resistance to a specialist herbivore

The CYP74 Gene Family in Watermelon: Genome-Wide Identification and Expression Profiling Under Hormonal Stress and Root-Knot Nematode Infection

Reflexion on Bio-Sourced Mosquito Repellents: Nature, Activity, and Preparation

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