A new slow‐release formulation of methyl salicylate optimizes the alternative control of <scp><i>Sitobion avenae</i></scp> (Fabricius) (Hemiptera: Aphididae) in wheat fields

Wang, Kang; Liu, Jiahui; Zhan, Yidi; Liu, Yong

doi:10.1002/ps.5164

Cited by 24 publications

(25 citation statements)

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“…However, volatiles terpenoids played an important role in direct and indirect plant defense responses against herbivores, especially in the transgenic gramineous crops such as rice and corn [15,24,37,38]. In addition, the currently reported plant volatiles for wheat aphid control were primarily methyl salicylate [39,40] and green leaf volatiles [41]. It means that wheat had ability to protect against aphids attack by combining with the volatiles, providing a basis for the study of subsequent volatile terpenes.…”

Section: Introductionmentioning

confidence: 99%

WITHDRAWN: De novo assembly and comparative transcriptome analysis revealed the genes that were potentially involved in defensive terpenoids emission in the wheat against the wheat aphid Sitobion avenae (Fabricius)

Zhao

Liu

Zhan

et al. 2019

Preprint

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Background Terpenoid volatiles play an important role directly or indirectly in the plant defense mechanisms against herbivores, including the gramineous crops such as transgenic rice and corn. The conventional varieties of wheat are important gramineous cereal crops that lack aphid-resistant genes. Therefore, it is necessary to seek the aphid-resistant genes by screening for potential terpenoid synthase genes in the wheat germplasm resources. Results The result showed that aphid-damaged Octoploid Tirtitrigia emitted a higher amount of S-linalool, ent-kaurene, (+)-delta-cadinene, (3S,6E)-nerolidol as compared to the intact plant. In addition, (E)-β-caryophyllene, β‐Myrcene, (E)-4,8-dimethyl-1,3,7-nonatriene (DMNT) were new volatile terpenoids emitted by the damaged plant. Further olfactory responses tests showed that S-linalool significantly repelled Sitobion avenae (Fabricius). After de novo assembly and quantitative assessment, a total of 182348 (74.8%) unigenes were annotated by alignment with the public protein databases. Of these unigenes, 2389 differentially expressed genes were identified between the intact and damaged ears of Octoploid Trititrigia. The expression profile of 10 randomly selected TPSs was confirmed with RT-qPCR. Candidate genes involved in terpenes biosynthesis were identified by showing the significant transcript changes between the intact and damaged plant ears of Octoploid Trititrigia. The transcript abundances of terpenes biosynthetic pathway-related genes were also positively correlated with the production of volatile terpenoids in the ears. The unigenes of S-linalool synthase gene was mapped to the cloned cDNA WT008_M07 (AK333728) and WT013_P07 (AK335856) of the Chinese spring wheat cultivar. The predicted protein complete ORF sequence (TaLIS1/2) when compared with the S-linalool synthase gene of other species, contained an aspartate-rich region DDxxD motif. Its function was characterized as coordinating the divalent metal ions involved in substrate binding. Furthermore, the phylogenetic tree results indicated that the TaLIS1 and TuNES1 are highly homologous. Conclusions This assembled transcriptome of S. avenae-damaged Octoploid Trititrigia and the intact ears could provide more molecular resources for the future functional characterization analysis of genomics in volatile terpenoids involved in direct or indirect defenses. Our study describes the metabolic regulation mechanism of the volatile terpenoids in the gramineous crops, which provides support for both breeding and genetic modification of the wheat varieties resistant to wheat aphid.

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Section: Introductionmentioning

confidence: 99%

WITHDRAWN: De novo assembly and comparative transcriptome analysis revealed the genes that were potentially involved in defensive terpenoids emission in the wheat against the wheat aphid Sitobion avenae (Fabricius)

Zhao

Liu

Zhan

et al. 2019

Preprint

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“…Plant should be treated with these compounds at the proper time under optimum conditions to avoid neutral or negative effects on plant growth and defence. Micro‐ and nano‐encapsulation of infochemicals in natural and synthetic polymers for slow‐ or controlled‐release improves their effects on plant health and volatile emission (Oliveira, Varanda, & Félix, 2016; Wang, Liu, Zhan, & Liu, 2019). Plant virus particles can be used to deliver infochemicals into the rhizosphere (Chariou et al, 2019).…”

Section: Wireless Communication: Signal Input‐transfer‐output Modelmentioning

confidence: 99%

Social networking in crop plants: Wired and wireless cross‐plant communications

Sharifi

Ryu

2020

Plant Cell & Environment

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The plant‐associated microbial community (microbiome) has an important role in plant–plant communications. Plants decipher their complex habitat situations by sensing the environmental stimuli and molecular patterns and associated with microbes, herbivores and dangers. Perception of these cues generates inter/intracellular signals that induce modifications of plant metabolism and physiology. Signals can also be transferred between plants via different mechanisms, which we classify as wired‐ and wireless communications. Wired communications involve direct signal transfers between plants mediated by mycorrhizal hyphae and parasitic plant stems. Wireless communications involve plant volatile emissions and root exudates elicited by microbes/insects, which enable inter‐plant signalling without physical contact. These producer‐plant signals induce microbiome adaptation in receiver plants via facilitative or competitive mechanisms. Receiver plants eavesdrop to anticipate responses to improve fitness against stresses. An emerging body of information in plant–plant communication can be leveraged to improve integrated crop management under field conditions.

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“…[14][15][16] Herbivoreinduced plant volatiles (HIPVs) have a key role in the tritrophic interactions among plants, herbivores and their natural enemies. 17 Methyl salicylate (MeSA), an important HIPV induced by aphids, is a key signal in the plant immune response 18 that can repel wheat aphids 19,20 and attract aphid predators such as Syrphus corollae Fabricius (Diptera: Syrphidae), 21 Coccinella septempunctata L. (Coleoptera: Coccinellidae), 22,23 Chrysopa nigricornis Burmeister (Neuroptera: Chrysopidae) 24 and aphid parasitoids (Hymenoptera: Braconidae). 25,26 Herbivore-induced semiochemicals have long been considered as potential alternative pest control elements that are nontoxic and harmless to beneficials and could be applied in an efficient and sustainable way to control insect pests in the field.…”

Section: Introductionmentioning

confidence: 99%

“…This could optimize wheat aphid control in the field by manipulating syrphid fly abundance. 21 Therefore, we hypothesize that this bead carrier system, with a mixture of the aphid alarm pheromone E⊎F and the HIPV MeSA might enhance aphid control efficacy in agro-ecosystems. Our experiments were in four parts.…”

Section: Introductionmentioning

confidence: 99%

New slow release mixture of (E)‐β‐farnesene with methyl salicylate to enhance aphid biocontrol efficacy in wheat ecosystem

Liu

Zhao

Zhan

et al. 2021

Pest Management Science

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Semiochemical use is a promising way to reduce damage from pests by improving natural control in agro-ecosystems. The aphid alarm pheromone (E)-⊎-farnesene (E⊎F) and herbivore-induced methyl salicylate (MeSA) are two volatile cues to induce changes in aphid behavior with functional significance. Because of limitations related to the volatility and oxidization of E⊎F and MeSA under natural conditions, slow-release and antioxidant techniques should be developed and optimized before application. Here, a slow-release alginate bead of E⊎F mixed with MeSA was first designed and manufactured. We hypothesized that a mixture of these two semiochemicals could be effective in controlling Sitobion miscanthi in wheat crops. Both MeSA and E⊎F in alginate beads were released stably and continuously for at least 15 days in the laboratory, whereas E⊎F in paraffin oil and pure MeSA were released for only 2 and 7 days, respectively. In 2018 field experiments, E⊎F and MeSA alone or in association significantly decreased the abundance of alate and apterous aphids. An increased abundance of mummified aphids enhanced by higher parasitism rates was observed when using E⊎F and MeSA in association, with a significant reduction of apterous abundance, more so than E⊎F or MeSA alone. In 2019, plots treated with a mixture of E⊎F and MeSA showed significantly decreased abundance of alate and apterous aphids with higher parasitism rates compared with the control. The new slow-release alginate bead containing a mixture of E⊎F with MeSA could be the most efficient formulation to control S. miscanthi population by attracting parasitoids in the wheat agro-ecosystem.

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A new slow‐release formulation of methyl salicylate optimizes the alternative control of Sitobion avenae (Fabricius) (Hemiptera: Aphididae) in wheat fields

Abstract: The MeSA alginate bead we manufactured could be an efficient slow-release formulation. The MeSA 10 bead had a significantly greater effect on S. avenae population suppression, partly by attracting M. corollae in fields. © 2018 Society of Chemical Industry.

Cited by 24 publications

References 24 publications

WITHDRAWN: De novo assembly and comparative transcriptome analysis revealed the genes that were potentially involved in defensive terpenoids emission in the wheat against the wheat aphid Sitobion avenae (Fabricius)

WITHDRAWN: De novo assembly and comparative transcriptome analysis revealed the genes that were potentially involved in defensive terpenoids emission in the wheat against the wheat aphid Sitobion avenae (Fabricius)

Social networking in crop plants: Wired and wireless cross‐plant communications

New slow release mixture of (E)‐β‐farnesene with methyl salicylate to enhance aphid biocontrol efficacy in wheat ecosystem

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