Lepidopteran pests of tea: Biology, geographical distribution, and management

Das, Tamal; Rahman, Azizur

doi:10.1007/s12600-023-01062-1

Cited by 4 publications

(3 citation statements)

References 32 publications

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“…A key component of these management efforts is the avoidance of mosquito bites. While chemical control represents the most efficacious approach, it carries significant environmental and human health risks (Aouinty et al, 2006), including the development of pesticide resistance (Das & Rahman, 2023). Consequently, an optimal solution involves the substitution of pesticides with biological alternatives, especially those derived from natural products such as aromatic plants and essential oils (EOs) (Abdelhakim et al, 2013;De Melo et al, 2023;El-Akhal et al, 2015).…”

Section: Historical Instances Include Its Implication In Disease Tran...mentioning

confidence: 99%

Larvicidal activity of six Moroccan Artemisia essential oils and a correlation study of their major components against Culex pipiens

Alami,

Lalami,

Annemer

et al. 2024

J Applied Entomology

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The present study was carried out for the first time in Morocco to valorise plant species of the Artemisia genus. Its aim was to evaluate the larvicidal activity of essential oils from six Artemisia plants (A. herba alba, A. absinthium, A. campestris L., A. negrei, A. pontica, and A. arborescens) against Culex pipiens mosquitoes, which are recognised as potential vectors of West Nile virus. Bioinsecticides derived from EOs have shown promise as effective mosquito control agents. The EOs were analysed using GC–MS and GC‐FID and were obtained by hydrodistillation from the aerial parts of the plants. Besides, the experiment was carried out according to the standard WHO protocol. Thujone and camphor were identified as the predominant compounds in all six Artemisia plants. A. herba alba demonstrated the highest larvicidal activity with LC50 and LC90 values of 4.85 and 15.39 μg/mL, respectively. Principal Component Analysis (PCA) and Hierarchical Cluster Analysis (HCA) were employed to explore the correlation between major EO compounds and larvicidal efficacy. The results suggest that these findings could pave the way for the development of tailored biocides that specifically target important disease vectors.

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Section: Historical Instances Include Its Implication In Disease Tran...mentioning

confidence: 99%

Larvicidal activity of six Moroccan Artemisia essential oils and a correlation study of their major components against Culex pipiens

Alami,

Lalami,

Annemer

et al. 2024

J Applied Entomology

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“…Excessive use of insecticides can lead to increased aphid resistance ( Ma et al., 2019 ; Zhang H. et al., 2020 ), higher pesticide residues in soil ( Hua et al., 2023 ), and harm to natural enemies of insects. The decline of natural enemies can cause a surge in pest populations and disrupt the ecological balance of farmland ( Das and Rahman, 2023 ; Dunn et al., 2023 ; McClure et al., 2023 ; Seni, 2023 ). Hence, it is imperative to prioritize sustainable and environmentally friendly alternatives to chemical control in order to efficiently manage cotton aphids.…”

Section: Introductionmentioning

confidence: 99%

Volatiles from cotton aphid (Aphis gossypii) infested plants attract the natural enemy Hippodamia variegata

Yi,

Teng,

Xie

et al. 2023

Front. Plant Sci.

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The Aphis gossypii is a major threat of cotton worldwide due to its short life cycle and rapid reproduction. Chemical control is the primary method used to manage the cotton aphid, which has significant environmental impacts. Therefore, prioritizing eco-friendly alternatives is essential for managing the cotton aphid. The ladybird, Hippodamia variegata, is a predominant predator of the cotton aphid. Its performance in cotton plantation is directly linked to chemical communication, where volatile compounds emitted from aphid-infested plants play important roles in successful predation. Here, we comprehensively studied the chemical interaction between the pest, natural enemy and host plants by analyzing the volatile profiles of aphid-infested cotton plants using gas chromatography-mass spectrometry (GC-MS). We then utilized the identified volatile compounds in electrophysiological recording (EAG) and behavioral assays. Through behavioral tests, we initially demonstrated the clear preference of both larvae and adults of H. variegata for aphid-infested plants. Subsequently, 13 compounds, namely α-pinene, cis-3-hexenyl acetate, 4-ethyl-1-octyn-3-ol, β-ocimene, dodecane, E-β-farnesene, decanal, methyl salicylate, β-caryophyllene, α-humulene, farnesol, DMNT, and TMTT were identified from aphid-infested plants. All these compounds were electrophysiologically active and induced detectable EAG responses in larvae and adults. Y-tube olfactometer assays indicated that, with few exceptions for larvae, all identified chemicals were attractive to H. variegata, particularly at the highest tested concentration (100 mg/ml). The outcomes of this study establish a practical foundation for developing attractants for H. variegata and open avenues for potential advancements in aphid management strategies by understanding the details of chemical communication at a tritrophic level.

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“…The tea plant is endemic to southwestern China, but it is now cultivated in more than 60 countries as an important green cash crop, covering approximately five million hectares [ 9 , 10 ]. China, India, Kenya, and Sri Lanka are the major tea-producing countries, accounting for 86% of the total tea production, followed by Vietnam, Turkey, Indonesia, Japan, Iran, and Argentina [ 11 , 12 ]. Among them, China alone contributes 3.18 million metric tons, which covers 44% of the global tea production annually [ 10 , 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Diversity and Abundance of Bacterial and Fungal Communities Inhabiting Camellia sinensis Leaf, Rhizospheric Soil, and Gut of Agriophara rhombata

Qu,

Long,

Wang

et al. 2023

Microorganisms

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Agriophara rhombata is a tea leaf moth that is considered one of the most destructive pests of Camellia sinensis (tea plant). Several recent studies have shown that many insects acquire part of the microbiome from their host and soil, but the pattern and diversity of their microbiome have not been clearly demonstrated. The present study aimed to investigate the bacterial and fungal communities present in the rhizospheric soil and leaf of tea plant compared to the gut of tea moth at different developmental stages (larvae, pupae, adult female and male) using Illumina MiSeq technology. Alpha diversity (Shannon index) showed higher (p < 0.05) bacterial and fungal diversity in soil samples than in leaf and tea moth larvae, pupae, and adult gut samples. However, during different developmental stages of tea moth, bacterial and fungal diversity did not differ (p > 0.05) between larvae, pupae, female, and male guts. Beta diversity also revealed more distinct bacterial and fungal communities in soil and leaf samples compared with tea moth gut samples, which had a more similar microbiome. Furthermore, Proteobacteria, Firmicutes, and Tenericutes were detected as the dominant bacterial phyla, while Ascomycota, Basidiomycota, and Mortierellomycota were the most abundant fungal phyla among all groups, but their relative abundance was comparatively higher (p < 0.05) in soil and leaf samples compared to tea moth gut samples. Similarly, Klebsiella, Streptophyta, and Enterococcus were the top three bacterial genera, while Candida, Aureobasidium, and Strelitziana were the top three fungal genera, and their relative abundance varied significantly (p < 0.05) among all groups. The KEGG analysis also revealed significantly higher (p < 0.5) enrichment of the functional pathways of bacterial communities in soil and leaf samples than in tea moth gut samples. Our study concluded that the bacterial and fungal communities of soil and tea leaves were more diverse and were significantly different from the tea moth gut microbiome at different developmental stages. Our findings contribute to our understanding of the gut microbiota of the tea moth and its potential application in the development of pest management techniques.

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Lepidopteran pests of tea: Biology, geographical distribution, and management

Cited by 4 publications

References 32 publications

Larvicidal activity of six Moroccan Artemisia essential oils and a correlation study of their major components against Culex pipiens

Larvicidal activity of six Moroccan Artemisia essential oils and a correlation study of their major components against Culex pipiens

Volatiles from cotton aphid (Aphis gossypii) infested plants attract the natural enemy Hippodamia variegata

Diversity and Abundance of Bacterial and Fungal Communities Inhabiting Camellia sinensis Leaf, Rhizospheric Soil, and Gut of Agriophara rhombata

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