The synergistic effects of rosehip oil and matrine against <i>Icerya aegyptiaca</i> (Douglas) (Hemiptera: Coccoidea) and the underlying mechanisms

Yi, Zhigang; Wu, Jian; Lin, Sukun; He, Junlang; Deng, Yangyang; He, Junna; Cheng, Dongmei

doi:10.1002/ps.6983

Cited by 16 publications

(13 citation statements)

References 40 publications

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“…In our study, we could find the potential connections that the OGs related to epithelial cell differentiation and development were positively selected or negatively selected with strengthened pressure at I. aegyptiaca , while some genes related to fatty acid biosynthesis and elongation were unique and highly expressed in the I. aegyptiaca transcriptomes and not found in other scale insects. These fatty acid-related genes are likely to be emergent genes in the lineage of I. aegyptiaca , which is a powerful genetic explanation for the abundance wax in I. aegyptiaca and partly accounting for its widely invasion due to the protective function [ 32 ].…”

Section: Discussionmentioning

confidence: 99%

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The transcriptome of Icerya aegyptiaca (Hemiptera: Monophlebidae) and comparison with neococcoids reveal genetic clues of evolution in the scale insects

et al. 2023

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Background Scale insects are worldwide sap-sucking parasites, which can be distinguished into neococcoids and non-neococcoids. Neococcoids are monophyletic with a peculiar reproductive system, paternal genome elimination (PGE). Different with neococcoids, Iceryini, a tribe in non-neococcoids including several damaging pests, has abdominal spiracles, compound eyes in males, relatively abundant wax, unique hermaphrodite system, and specific symbionts. However, the current studies on the gene resources and genomic mechanism of scale insects are mainly limited in the neococcoids, and lacked of comparison in an evolution frame. Result We sequenced and de novo assembled a transcriptome of Icerya aegyptiaca (Douglas), a worldwide pest of Iceryini, and used it as representative of non-neococcoids to compare with the genomes or transcriptomes of other six species from different families of neococcoids. We found that the genes under positive selection or negative selection intensification (simplified as “selected genes” below) in I. aegyptiaca included those related to neurogenesis and development, especially eye development. Some genes related to fatty acid biosynthesis were unique in its transcriptome with relatively high expression and not detected in neococcoids. These results may indicate a potential link to the unique structures and abundant wax of I. aegyptiaca compared with neococcoids. Meanwhile, genes related to DNA repair, mitosis, spindle, cytokinesis and oogenesis, were included in the selected genes in I. aegyptiaca, which is possibly associated with cell division and germ cell formation of the hermaphrodite system. Chromatin-related process were enriched from selected genes in neococcoids, along with some mitosis-related genes also detected, which may be related to their unique PGE system. Moreover, in neococcoid species, male-biased genes tend to undergo negative selection relaxation under the PGE system. We also found that the candidate horizontally transferred genes (HTGs) in the scale insects mainly derived from bacteria and fungi. bioD and bioB, the two biotin-synthesizing HTGs were exclusively found in the scale insects and neococcoids, respectively, which possibly show potential demand changes in the symbiotic relationships. Conclusion Our study reports the first I. aegyptiaca transcriptome and provides preliminary insights for the genetic change of structures, reproductive systems and symbiont relationships at an evolutionary aspect. This will provide a basis for further research and control of scale insects.

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Section: Discussionmentioning

confidence: 99%

“…1 ). They protect themselves with the formation of a hydrophobicity wax shell, which is impenetrable even by chemical insecticides [ 32 ]. But the mechanisms of forming these characters are far from known.…”

Section: Introductionmentioning

confidence: 99%

The transcriptome of Icerya aegyptiaca (Hemiptera: Monophlebidae) and comparison with neococcoids reveal genetic clues of evolution in the scale insects

et al. 2023

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“…The effectiveness of insecticide applications against I. aegyptiaca may be reduced by the protective wax cover. The efficacy of mineral oils, insect growth regulators and organophosphorus insecticides was tested on ornamental plants (Mangoud and Abd El-Gawad, 2003;Abdel-Fattah et al, 2016;Zhou et al, 2022).…”

Section: Chemical Treatments On Crops Including Reproductive Materialsmentioning

confidence: 99%

“…The efficacy of mineral oils, insect growth regulators and organophosphorus insecticides was tested on ornamental plants (Mangoud and Abd El-Gawad, 2003;Abdel-Fattah et al, 2016;Zhou et al, 2022).…”

Section: Chemical Treatments On Crops Including Reproductive Materialsmentioning

confidence: 99%

Pest categorisation of Icerya aegyptiaca

Bragard¹,

Baptista²,

Chatzivassiliou³

et al. 2023

EFS2

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The EFSA Panel on Plant Health performed a pest categorisation of Icerya aegyptiaca (Hemiptera: Sternorrhyncha: Monophlebidae), the Egyptian fluted scale, for the EU. This insect is established in several countries in tropical and subtropical regions of the world. Within the EU, the pest has not been reported. It is not listed in Annex II of Commission Implementing Regulation (EU) 2019/2072. It is highly polyphagous, feeding on plants in 128 genera and 66 families, with some preference for avocado ( Persea americana ), banana ( Musa sp.), citrus ( Citrus spp.), coconut ( Coccos nucifera ), common pear ( Pyrus communis ), fig ( Ficus spp.), guava ( Psidium guajava ), maize ( Zea mays ), mango ( Mangifera indica ), white mulberry ( Morus alba ), and grapevine ( Vitis vinifera ). It has also been recorded feeding on tomato ( Solanum lycopersicum ), as well as on ornamental plants. Plants for planting and fruits, vegetables and cut flowers are the main potential pathways for entry of I. aegyptiaca into the EU. Climatic conditions and availability of host plants in parts of the EU where there are very few days of frost each year would likely allow this species to successfully establish and spread. Economic impact in cultivated hosts including citrus, grapes, maize, peppers, sunflowers, tomatoes and ornamental crops is anticipated if establishment occurs. Phytosanitary measures are available to reduce the likelihood of entry and spread. I. aegyptiaca meets the criteria that are within the remit of EFSA to assess for this species to be regarded as a potential Union quarantine pest.

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“…Matrine, a quinolizidine alkaloid extracted from the root of Sophora flavescens , is the most registered botanical pesticide in China 11 . It has excellent insecticidal activity, especially against aphids, 12,13 showing contact poisoning, stomach poisoning and antifeeding activities 14–17 . At present, the common formulations of matrine are mainly soluble concentrates and aqueous solutions, which are only utilized by spray.…”

Section: Introductionmentioning

confidence: 99%

Matrine can be absorbed and transmitted bidirectionally to defend against aphids (Hemiptera: Aphididae) on wheat and pepper

Sun

Zhang

et al. 2023

Pest Management Science

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Background: Although matrine is widely used, its absorption and transport mechanisms in crops remain unexplored. In this study, three methods including foliar application, hydroponics and seed immersion were used to investigate whether matrine molecules could enter into plants through different channels, and to further resolve its transport characteristics. The systemic activity of matrine also was evaluated.Result: Matrine was quickly absorbed and transported downwards after the leaves of wheat or peppers were treated, and also accumulated and transmitted upwards by roots. It was not only absorbed by seeds, but also appeared continuously in young roots and leaves in both plants for nearly 20 days. There were some differences in the uptake and conduction of matrine between pepper and wheat: matrine concentrated in pepper upper leaves with less delivered downwards to roots than in wheat, and also transduction of matrine in pepper lower leaves upwards to upper leaves was less than in wheat. Matrine had systemic activity, with LC 50 of 361.99 and 904.24 ∼g•mL −1 against Rhopalosiphum padib on wheat and Myzus persicae (Sulzer) on pepper plants at 48 h, separately.Conclusion: Matrine can be absorbed by the roots, seeds and leaves of plants, and transmitted bidirectionally to any organs, presenting satisfactory systemic poisoning activity against aphids. It is of great significance to develop new formulation products of matrine and promote its commercialized value.

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The synergistic effects of rosehip oil and matrine against Icerya aegyptiaca (Douglas) (Hemiptera: Coccoidea) and the underlying mechanisms

Cited by 16 publications

References 40 publications

The transcriptome of Icerya aegyptiaca (Hemiptera: Monophlebidae) and comparison with neococcoids reveal genetic clues of evolution in the scale insects

The transcriptome of Icerya aegyptiaca (Hemiptera: Monophlebidae) and comparison with neococcoids reveal genetic clues of evolution in the scale insects

Pest categorisation of Icerya aegyptiaca

Matrine can be absorbed and transmitted bidirectionally to defend against aphids (Hemiptera: Aphididae) on wheat and pepper

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