Effects of insect-resistant transgenic cotton on ground-dwelling beetle assemblages (Coleoptera)

Zhao, Caiyun; Yu, Xiubo; Liu, Yongbo; Li, Junsheng

doi:10.1016/s2095-3119(15)61141-8

Cited by 6 publications

(2 citation statements)

References 53 publications

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“…It was reported that half of the yield losses were caused by pest feeding directly and pathogenic infection indirectly (McCook and Vandermeer 2015). Transgenic cotton expressing a toxic protein derived from Bacillus thuringiensis (Bt) effectively suppressed several agricultural pests such as Coleoptera, Lepidoptera, and Diptera without harming human health and the environment (Park et al 2009;Zhao et al 2016;Zafar et al 2022). With the worldwide cultivation of transgenic cotton, Helicoverpa armigera (Hübner), Pectinophora gossypiella, and some lepidopteran insects are controlled effectively, but no obvious inhibition on other insects (Helen 2006;Tabashnik 2010).…”

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confidence: 99%

Trichomes on Cotton Leaf Surface Affect the Feeding Behaviors of Cotton Aphids

Yang

Liu

Zhao

et al. 2023

Preprint

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Aphis gossypii Glover is one of the most important pests in cotton seedling. The specialized mouthpart and short generation time allow them seriously restricted the quality and yield of cotton. With the electrical penetration graph (EPG), optical microscope, and scanning electron microscope, the physical characteristics of trichomes on the cotton leaf surface and their effects on the feeding behaviors of cotton aphids were investigated in this study. Two types of leaf trichomes, glandular trichomes, and asteroid non-glandular trichomes were observed on the surface of cotton leaves under optical and scanning electron microscopes. As a whole, EPG results mainly showed differences in a non-probe waveform which meant searching on the leaf surface, and a potential drop waveform which meant intracellular penetration. Whereas pathway waveform, xylem waveform, and phloem waveform showed inconspicuous differences. Detailed indicators were slightly different at different periods. Our results confirmed that the structure of trichomes may directly affect the searching behaviors of herbivorous insect pests and hence regulate the plant-environment interactions.

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Section: )mentioning

confidence: 99%

Trichomes on Cotton Leaf Surface Affect the Feeding Behaviors of Cotton Aphids

Yang

Liu

Zhao

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Trichomes on Cotton Leaf Surface Affect the Feeding Behaviors of Cotton Aphids (Aphis gossypii)

Yang

Liu

Zhao

et al. 2023

Preprint

View full text Add to dashboard Cite

Aphis gossypii Glover is one of the most important pests in cotton seedling. The specialized mouthpart and short generation time made them seriously restricted the cotton yield. With the electrical penetration graph (EPG), optical microscope, and scanning electron microscope, the physical characteristics of trichomes on the cotton leaf surface and their effects on the stylet penetration behaviors of cotton aphids were investigated in this study. Two types of leaf trichomes, glandular trichomes, and asteroid non-glandular trichomes were observed on the surface of cotton leaves under optical and scanning electron microscopes. As a whole, EPG results mainly showed differences in non-probing period which meant searching on the leaf surface, and potential drop waveform which meant intracellular punctures. Whereas pathway waveform, xylem ingestion waveform, and phloem ingestion waveform showed inconspicuous differences. Detailed indicators were slightly different at different periods. Our results suggested that the structure of trichomes may affect the searching behaviors of herbivorous insect pests and hence regulate the plant-environment interactions.

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The comparison of species diversity and abundance of insect natural enemies in the domesticated species of cotton using the yellow pan trap method

Tenguri,

Kranthi,

Naik

et al. 2024

Sci Rep

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India is the world’s largest cotton producer and the only country that grows all four cultivated cotton species. There have been very few studies on the diversity and abundance of natural enemies of cotton insect pests in these cultivated cotton species. Therefore, the current study (2016–2018) was conducted to assess the diversity and abundance of natural enemies that cultivated cotton species harbour. Phule Dhanwantari, Suraj, Suvin, RCH-2, and DCH-32 were the five genotypes used in the study, each with a distinct genetic background. Using the adiv 2.0.1 and vegan R packages, we identified significant differences in natural enemies in terms of species diversity, richness, evenness, and abundance. Analysis of Similarity (ANOSIM) and Non-metric Multidimensional Scaling (NMDS) indicated substantial differences in the natural enemy community structure among the examined genotypes. A total of 17,279 natural enemies were collected and identified across genotypes from seven predatory families and five parasitoid families. The percentage share of these natural enemy families across genotypes and years, in descending order, is Coccinellidae (28.23%) < Tachinidae (19.23%) < Braconidae (12.68%) < Chrysopidae (11.65%) < Chalcididae (9.41%) < Aphelinidae (6.33%) < Pentatomidae (3.29%) < Ichneumonidae (2.37%) < Syrphidae (2.33%) < Vespidae (1.81%) < Asilidae (1.79%) < Geocoridae (0.89%). Coccinellidae, Tachinidae, Braconidae, Chrysopidae, Chalcididae, and Aphelinidae are the six major families that account for more than 85% of all recorded natural enemies. These six families have a higher percentage share in Phule Dhanwantary (90%) compared to the other genotypes. The conservation and better utilization of these natural enemies are crucial for the ecological and safe management of insect pests in the cotton ecosystem.

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Effects of insect-resistant transgenic cotton on ground-dwelling beetle assemblages (Coleoptera)

Cited by 6 publications

References 53 publications

Trichomes on Cotton Leaf Surface Affect the Feeding Behaviors of Cotton Aphids

Trichomes on Cotton Leaf Surface Affect the Feeding Behaviors of Cotton Aphids

Trichomes on Cotton Leaf Surface Affect the Feeding Behaviors of Cotton Aphids (Aphis gossypii)

The comparison of species diversity and abundance of insect natural enemies in the domesticated species of cotton using the yellow pan trap method

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