Diapause induction and clock mechanism in the cabbage beetle, Colaphellus bowringi (Coleoptera: Chrysomelidae)

Wang, Xiao‐Ping; Ge, Feng; Xue, Fang‐Sen; Lan-shao, You

doi:10.1016/j.jinsphys.2004.01.002

Cited by 41 publications

(40 citation statements)

References 25 publications

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“…Almost all of the experiments that have been performed with non-24 h light–dark cycles in insects have shown that the dark period (scotophase) is the decisive phase in the determination of diapause, that is, the photoperiodic clock was only shown to measure the duration of scotophase [18]–[23]. Day length measurement was more important than night length measurement in photoperiodic response for diapause induction only in the linden bug, Pyrrhocoris apterus and the zygaenid moth, Thyrassia penangae [24], [25].…”

Section: Discussionmentioning

confidence: 99%

“…However, the time at which different species are most sensitive to light pulses varies considerably [26]. In some insects, the time at which they are most highly photosensitive occurs in the early scotophase [23], [27]–[29], the middle of scotophase [22], [30], and the late scotophase [20], [25], [31], [32]. In the cabbage butterfly, Pieris melete (an intermediate-day species,), night interruption with a 1-h light pulse at LD 11∶13 (a winter diapause-inducing photoperiod) inhibited the incidence of diapause most effectively in late scotophase, whereas night interruption with a 1-h light pulse placed in early scotophase at LD 12.5∶11.5 (a diapause-inhibiting photoperiod) resulted in the highest intensity of diapause [21].…”

Section: Discussionmentioning

confidence: 99%

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Diapause Induction and Termination in Hyphantria cunea (Drury) (Lepidoptera: Arctiinae)

et al. 2014

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The fall webworm, Hyphantria cunea (Drury), enters facultative diapause as a pupa in response to short-day conditions during autumn. Photoperiodic response curves showed that the critical day length for diapause induction was 14 h 30 min, 14 h 25 min and 13 h 30 min at 22, 25 and 28°C, respectively. The photoperiodic responses under non-24 h light–dark cycles demonstrated that night length played an essential role in the determination of diapause. Experiments using a short day length interrupted by a 1-h light pulse exhibited two troughs of diapause inhibition and the effect of diapause inhibition was greater in the early scotophase than in the late scotophase. The diapause-inducing short day lengths of 8, 10 and 12 h evoked greater intensities of diapause than did 13 and 14 h. Diapause can be terminated without exposure to chilling, but chilling at 5°C for 90 and 120 d significantly accelerated diapause development, reduced mortality, and synchronized adult emergence. Additionally, the potential for H. cunea from the temperate region (Qingdao) to emerge and overwinter under field conditions in subtropical regions (Nanchang) of China was evaluated. Pupae that were transferred to Nanchang in early July showed a 60% survival rate and extremely dispersed pupal period (from 12 to 82 days), suggesting that some pupae may undergo summer diapause. Diapausing temperate region pupae that were moved out-of-doors in Nanchang during October showed approximately 20% overwintering survival; moreover, those pupae that overwintered successfully emerged the next spring during a period when their host plants would be available. The results indicate that this moth has the potential to expand its range into subtropical regions of China.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Diapause Induction and Termination in Hyphantria cunea (Drury) (Lepidoptera: Arctiinae)

et al. 2014

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“…More than 1000 cabbage beetles, Colaphellus bowringi , were collected as adults from a population in Xiushui County (29°1′N, 114°4′E), Jiangxi Province, China, and were transferred to the laboratory in late November 200844. The offspring from post-diapause beetles were used in experiments and were reared as previously published work44.…”

Section: Methodsmentioning

confidence: 99%

“…The offspring from post-diapause beetles were used in experiments and were reared as previously published work44. Diapause-destined female adults were obtained by rearing larvae at 25 °C under a light:dark (LD) 16:8 h photoperiod.…”

Section: Methodsmentioning

confidence: 99%

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Fatty acid synthase 2 contributes to diapause preparation in a beetle by regulating lipid accumulation and stress tolerance genes expression

Tan

Liu

Zhu

et al. 2017

Sci Rep

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Diapause, also known as dormancy, is a state of arrested development that allows insects to survive unfavorable environmental conditions. Diapause-destined insects store large amounts of fat when preparing for diapause. However, the extent to which these accumulated fat reserves influence diapause remains unclear. To address this question, we investigated the function of fatty acid synthase (FAS), which plays a central role in lipid synthesis, in stress tolerance, the duration of diapause preparation, and whether insects enter diapause or not. In diapause-destined adult female cabbage beetles, Colaphellus bowringi, FAS2 was more highly expressed than FAS1 at the peak stage of diapause preparation. FAS2 knockdown suppressed lipid accumulation and subsequently affected stress tolerance genes expression and water content. However, silencing FAS2 had no significant effects on the duration of diapause preparation or the incidence of diapause. FAS2 transcription was suppressed by juvenile hormone (JH) and the JH receptor methoprene-tolerant (Met). These results suggest that the absence of JH-Met induces FAS2 expression, thereby promoting lipid storage in diapause-destined female beetles. These results demonstrate that fat reserves regulate stress tolerance genes expression and water content, but have no significant effect on the duration of diapause preparation or the incidence of diapause.

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Targeting coat protein II complex genes via RNA interference inhibits female adult feeding and reproductive development in the cabbage beetle Colaphellus bowringi

Tian

Guo

Zhu

et al. 2022

Pest Management Science

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BACKGROUND The cabbage beetle Colaphellus bowringi is a highly destructive cruciferous vegetable pest in Asia. This beetle is predominantly controlled by synthetic chemical pesticides, which leave pesticide residues on food and constitute a major hidden danger to human health. Based on preliminary research, we hypothesized that the coat protein II (COPII) complex, a primary coated vesicle that exports cargo molecules from the endoplasmic reticulum, is a promising novel target for the control of Colaphellus bowringi. RESULTS This study investigated whether disrupting COPII using RNA interference (RNAi) affects the growth and development of Colaphellus bowringi adults. The results showed that five COPII assembly genes, Sar1, Sec23, Sec24, Sec13, and Sec31, were uniformly expressed in multiple tissues of adult female Colaphellus bowringi. Injecting double‐stranded RNA (dsRNA) against each gene induced a high RNAi efficiency by approximately 55–99%, and considerably inhibited yolk deposition and ovarian growth. Moreover, knockdown of Sar1, Sec23 and Sec24 suppressed feeding and increased mortality to 26.67%, 46.67%, and 42.22%, respectively. This was partially due to the down‐regulation of insulin/mTOR‐associated nutritional pathways. The results indicate that silencing any of the five genes responsible for COPII complex assembly represses Juvenile hormone and ecdysone signaling pathways, suggesting that vesicle transport plays a vital role in the endocrine regulation of Colaphellus bowringi females. CONCLUSION This study suggests that the COPII complex could be a promising RNAi target for the management of Colaphellus bowringi, which would reduce our dependence on chemical pesticides for pest control. © 2022 Society of Chemical Industry.

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Diapause induction and clock mechanism in the cabbage beetle, Colaphellus bowringi (Coleoptera: Chrysomelidae)

Cited by 41 publications

References 25 publications

Diapause Induction and Termination in Hyphantria cunea (Drury) (Lepidoptera: Arctiinae)

Diapause Induction and Termination in Hyphantria cunea (Drury) (Lepidoptera: Arctiinae)

Fatty acid synthase 2 contributes to diapause preparation in a beetle by regulating lipid accumulation and stress tolerance genes expression

Targeting coat protein II complex genes via RNA interference inhibits female adult feeding and reproductive development in the cabbage beetle Colaphellus bowringi

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