Antixenosis in soybean to Spodoptera cosmioides (Lepidoptera: Noctuidae) mediated by leaf color and trichome density

Queiroz, Erielma Borges de; Silva, Franciele C. da; Borella, Célio; Araújo, Márcio da Silva; Hirose, Edson; Jesus, Flávio Gonçalves de

doi:10.1007/s12600-020-00840-5

Cited by 7 publications

(3 citation statements)

References 35 publications

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“…Pod hardness has been previously reported as negatively influencing some soybean pests (Panizzi & Alves, 1993). Trichome density in IAC‐100 has been reported as a mechanism of resistance to soybean pests (Schlink‐Souza et al, 2018; Eduardo et al, 2020; Queiroz et al, 2020). Thus, pod hardness and trichome density constitute important morphological plant resistance traits to C. virescens in soybean.…”

Section: Discussionmentioning

confidence: 99%

“…The use of resistant cultivars is an important control tactic within a program of soybean integrated pest management, mainly because the adoption of this tactic contributes to reducing the use of insecticides in the crop. There have been several recent studies evaluating soybean cultivars for resistance to lepidopterans (Souza et al, 2014a,b; Boiça Júnior et al, 2015; Favetti et al, 2015; Wang et al, 2015; Chen et al, 2018; Freitas et al, 2018; Coelho et al, 2020; Queiroz et al, 2020), including C. virescens (Almeida et al, 2017a,b). However, studies aiming to develop an adequate, high‐throughput phenotyping protocol to evaluate soybean cultivars for resistance to lepidopterans are scarce in the literature (Eduardo et al, 2020), and to our knowledge, no studies have determined a protocol for antibiosis assays in soybean to lepidopterans.…”

Section: Introductionmentioning

confidence: 99%

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Protocol for assessing soybean antibiosis to Chloridea virescens

Júnior

Eduardo

Souza

et al. 2022

Entomologia Exp Applicata

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There are no standard protocols for assessing antibiosis in soybean, Glycine max (L.) (Fabaceae), cultivars to lepidopterans, including tobacco budworm, Chloridea virescens (Fabricius) (Lepidoptera: Noctuidae), an important species that causes damage to soybean crops in several production regions. This study was conducted to assess methodologies to determine the optimal combination of larval density, confinement container size, and plant structure in soybean antibiosis assays to C. virescens. In addition, primary and secondary metabolites in plant structures were analyzed to elucidate potential chemical resistance mechanisms against this lepidopteran. Antibiosis assays to C. virescens in resistant (IAC‐100) and susceptible (BR‐16) soybean cultivars were performed using three larval densities (one, two, and three larvae), two confinement container sizes (150 and 300 ml), and combinations of soybean plant structures (leaves, uncut pods, leaves + uncut pods, cut pods, and leaves + cut pods). Phenol, tannin, fiber, and lignin contents were quantified in the leaves, uncut pods, and grains of the soybean cultivars and related to biological development of C. virescens. Resistance levels in soybean cultivars in antibiosis assays were best differentiated using one larva per 150‐ml confinement container, fed only on soybean leaves. Higher contents of condensed tannins in the leaves of IAC‐100 cultivar may be one of the main chemical mechanisms of resistance to C. virescens. Our study is the first to determine the optimal combination of larval density, confinement container size, and plant structure for antibiosis assays in soybean cultivars to C. virescens. The developed protocol will benefit high‐throughput phenotyping in genetic breeding programs to obtain cultivars resistant to lepidopterans for use in integrated pest management.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Protocol for assessing soybean antibiosis to Chloridea virescens

Júnior

Eduardo

Souza

et al. 2022

Entomologia Exp Applicata

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“…One of them is the presence of trichomes or hairs on leaves that grow from plant epidermal tissue. The density of trichomes could be an inhibitor (antixenosis) for the herbivorous insect Spodoptera cosmiodes (Lepidoptera: Noctuidae) [20]. However, the presence of trichomes may be a preference for other insects.…”

Section: Behavior and Survival Ability Of Larvae S Pectinicornismentioning

confidence: 99%

Preferences Spodoptera pectinicornis as biocontrol of water lettuce (Pistia stratiotes L.) wetland weeds to various forms of feedstock

Aphrodyanti

Soedijo

Millati

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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The dominance of water lettuce as one of the wetland weeds can cause a decrease in biodiversity in an ecosystem. Spodoptera pectinicornis can be a biological control agent for these weeds but requires a mass multiplication stage, so it is necessary to research feedstock in their augmentation. The research aimed to study the preferences and survival abilities of larvae S. pectinicornis to three forms of feed preparation made from water lettuce leaves. The research method had carried out in 2 stages (1) feedstocks form; an extracted water lettuce, mashed and cut into pieces (2) the addition of nutrients and preservatives to feedstocks. Observations had been made on the preferences and ability of the larvae to survive. The results showed that the larvae of S. pectinicornis had a preference and could survive on cut water lettuce feedstock, while in extracted and mashed died. The addition of nutrients and preservatives to the cut-up feed turned out to cause the larvae to stay away from the feed preparation and eventually die. Based on these, larvae S. pectinicornis only prefer to eat the feedstock in cutting form than enrich it with nutrients and preservatives.

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