Exogenous Gibberellin GA3 Enhances Defense Responses in Rice to the Brown Planthopper Nilaparvata lugens (Stål)

Wang, Wanwan; Jin, Nanguo; Mo, Xiaochang; Wu, Jun; Lü, Jing; Lou, Yonggen

doi:10.1007/s12374-020-09271-5

Cited by 16 publications

(14 citation statements)

References 52 publications

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“…For example, it can be released by pests in Oryza sativa, which has a repellent effect on Nilaparvata lugens. 58 The black bean aphid showed EAG responses to linalool, methyl salicylate, and capric acid. 59 Sitobion avenae damage of wheat releases methyl salicylate, which has a good repellent effect on the alate aphids.…”

Section: Discussionmentioning

confidence: 99%

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Spodoptera litura larvae are attracted by HvAV‐3h‐infected S. litura larvae‐damaged pepper leaves

Liu

Yuan

et al. 2023

Pest Management Science

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Background Herbivore‐induced plant volatiles (HIPVs) are important self‐defense outputs of pepper plants to resist insect pests. Ascoviruses are pathogenic to the larvae of most lepidopteran vegetable pests. However, whether Heliothis virescens ascovirus 3h (HvAV‐3h)‐infected Spodoptera litura larvae can change pepper leaf HIPVs is not well understood. RESULTS Spodoptera litura larvae preferred S. litura‐infested leaves, and this preference was stronger with longer duration of S. litura infestation. In addition, S. litura larvae significantly chose pepper leaves damaged by HvAV‐3h‐infected S. litura over the healthy pepper leaves. Results also showed that S. litura larvae preferred leaves mechanically damaged and treated with oral secretions from HvAV‐3h infected‐S. litura larvae in a simulation test. We captured the volatiles emitted by leaves under six treatments. Results showed that the volatile profile changed with the different treatments. Testing of volatile blends, prepared to the proportion released showed that the blend from simulated HvAV‐3h‐infected S. litura larvae‐damaged plants was the most attractive to S. litura larvae. Further, we also found that some of the compounds significantly attracted S. litura larvae at specific concentrations. CONCLUSION HvAV‐3h‐infected S. litura can alter the release of HIPVs in pepper plants and thus become more attractive to S. litura larvae. We speculate that this may be due to alterations in the concentration of some compounds (such as geranylacetone and prohydrojasmon) affecting the behavior of S. litura larvae. © 2023 Society of Chemical Industry.

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Section: Discussionmentioning

confidence: 99%

“…Methyl salicylate can affect a variety of insects. For example, it can be released by pests in Oryza sativa , which has a repellent effect on Nilaparvata lugens 58 . The black bean aphid showed EAG responses to linalool, methyl salicylate, and capric acid 59 .…”

Section: Discussionmentioning

confidence: 99%

Spodoptera litura larvae are attracted by HvAV‐3h‐infected S. litura larvae‐damaged pepper leaves

Liu

Yuan

et al. 2023

Pest Management Science

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“…In particular, induced host plant resistance to insects can be deployed by using chemical elicitors of secondary metabolites that impart insect resistance. Induced response elicitors can be applied to agricultural plants to strengthen the natural defense mechanism against herbivore injury and can serve as a component of integrated pest management for long-term agricultural production [71].…”

Section: Discussionmentioning

confidence: 99%

Decoyinine Induced Resistance in Rice against Small Brown Planthopper Laodelphax striatellus

Zhang

et al. 2022

Insects

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Induced resistance against SBPH via microbial pesticides is considered as an eco-friendly and promising management approach. In this study, the induced resistance against SBPH in rice seedling by a new potential microbial pesticide, decoyinine (DCY), a secondary metabolite produced by Streptomyces hygroscopicus, was evaluated to investigate the effects of DCY on SBPH’s biological and population parameters along with defense-related physiological and biochemical indices in rice against SBPH feeding. We found that DCY has potential to improve rice resistance and significantly reduced the fecundity of SBPH. Laboratory results revealed that DCY treated rice significantly changed SBPH’s fecundity and population life table parameters. The concentrations of hydrogen peroxide (H2O2), soluble sugars and malondialdehyde (MDA) were significantly lower in DCY treated rice plants against SBPH infestation at 24, 48 and 96 hours post infestation (hpi), respectively. The concentrations of antioxidant enzymes, catalase (CAT) was significantly higher at 72 hpi, while super oxidase dismutase (SOD) and peroxidase (POD) concentrations were recorded higher at 96 hpi. The concentrations of synthases enzymes, phenyl alanine ammonia-lyase (PAL) was higher at 48 hpi, whereas polyphenol oxidase (PPO) concentration was maximum at 72 hpi against SBPH infestation. The results imply that DCY has unique properties to enhance rice resistance against SBPH by stimulating plant defensive responses. Microbial pesticides may be developed as an alternative to chemical pest control.

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“…Exogenously applied gibberellic acid induces the gene expression of H 2 O 2 -scavenging enzymes and reduces NADPH oxidases as well as increasing immunity to CLas [ 92 ]. Exogenous gibberellin, GA3 also enhanced resistance of rice to plant hopper, Nilaparvata lugens (Stål) [ 93 ]. This increased resistance was associated with the decrease in OsMPK6 and OsWRKY13, OsWRKY30, and OsWRKY33, leading to reduced JA levels but increased ethylene levels [ 93 ].…”

Section: Molecular Interplay Of Hormones That Impacts Immunitymentioning

confidence: 99%

“…Exogenous gibberellin, GA3 also enhanced resistance of rice to plant hopper, Nilaparvata lugens (Stål) [ 93 ]. This increased resistance was associated with the decrease in OsMPK6 and OsWRKY13, OsWRKY30, and OsWRKY33, leading to reduced JA levels but increased ethylene levels [ 93 ].…”

Section: Molecular Interplay Of Hormones That Impacts Immunitymentioning

confidence: 99%

Interplay between phytohormone signalling pathways in plant defence – other than salicylic acid and jasmonic acid

Gilroy

Breen

2022

Essays in Biochemistry

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Phytohormones are essential for all aspects of plant growth, development, and immunity; however, it is the interplay between phytohormones, as they dynamically change during these processes, that is key to this regulation. Hormones have traditionally been split into two groups: growth-promoting and stress-related. Here, we will discuss and show that all hormones play a role in plant defence, regardless of current designation. We highlight recent advances in our understanding of the complex phytohormone networks with less focus on archetypal immunity-related pathways and discuss protein and transcription factor signalling hubs that mediate hormone interplay.

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Exogenous Gibberellin GA3 Enhances Defense Responses in Rice to the Brown Planthopper Nilaparvata lugens (Stål)

Cited by 16 publications

References 52 publications

Spodoptera litura larvae are attracted by HvAV‐3h‐infected S. litura larvae‐damaged pepper leaves

Spodoptera litura larvae are attracted by HvAV‐3h‐infected S. litura larvae‐damaged pepper leaves

Decoyinine Induced Resistance in Rice against Small Brown Planthopper Laodelphax striatellus

Interplay between phytohormone signalling pathways in plant defence – other than salicylic acid and jasmonic acid

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