Effect of Polygonum persicaria (Polygonales: Polygonaceae) Extracted Agglutinin on Life Table and Antioxidant Responses in Helicoverpa armigera (Lepidoptera: Noctuidae) Larvae

Rahimi, Vahid; Hajizadeh, Jalil; Zibaee, Arash; Sendi, Jalal Jalali

doi:10.1093/jee/toy006

Cited by 25 publications

(20 citation statements)

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“…Colonies with inserts were screened with blue/white X-gal selection under standard ampicillin conditions. Plasmid DNA was extracted from recombinant bacterial cells using the alkaline lysis method described by Sambrook and Russell [37], and the DNA was sequenced from multiple [5][6][7][8][9][10] different independent bacterial colonies by Bioneer (Daejeon, Korea). Table 1.…”

Section: Hsp Gene Cloningmentioning

confidence: 99%

“…The antioxidant system is well-regulated, controlling ROS levels during normal metabolism, but also capable of increasing enzyme activities and antioxidants during various stresses. Induction of the antioxidant system has been observed in many insects subjected to different stresses, such temperature [2; 4; 5; 6], dietary oxidants [7], pesticide exposures [8; 9], oxygen deprivation [10] and infections or parasitisms [11; 12].…”

Section: Introductionmentioning

confidence: 99%

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Differential expression of heat shock proteins and antioxidant enzymes in response to temperature, starvation, and parasitism in the Carob moth larvae, Ectomyelois ceratoniae (Lepidoptera: Pyralidae)

et al. 2020

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Insects face diverse biotic and abiotic stresses that can affect their survival. Many of these stressors impact cellular metabolism, often resulting in increased accumulation of reactive oxygen species (ROS). Consequently, insects will respond to these stressors by increasing antioxidant activity and increased production of heat shock proteins (HSPs). In this study, the effect of heat, cold, starvation, and parasitism by Habroacon hebetor wasps was examined in the carob moth, Ectomyelois ceratoniae, to determine which responses were common to different stresses. For all stressors, malondialdehyde levels increased, indicative of oxidative stress in the insects. The activity of two antioxidant enzymes, superoxide dismutase (SOD) and catalase (CAT), increased with each stress, suggesting that these enzymes were serving a protective role for the insects. Heat (46˚C for 100 min) and cold (-15˚C for 30 min) treatments caused significant mortalities to all developmental stages, but pretreatments of moderate heat (37˚C for 10 min) or cold (10˚C for 10 min) induced thermotolerance and reduced the mortality rates when insects were subsequently exposed to lethal temperatures. Quantitative RT-PCR confirmed that heat and cold tolerance were associated with up-regulation of two HSPs, HSP70 and HSP90. Interestingly, HSP70 transcripts increased to a greater extent with cold treatment, while HSP90 transcripts increased more in response to high temperatures. RNA interference (RNAi)-mediated knockdown of either HSP70 or HSP90 transcripts was achieved by injecting larvae with dsRNA targeting each gene's transcripts, and resulted in a loss of acquired thermotolerance in insects subjected to the heat or cold pretreatments. These observations provide convincing evidence that both HSP70 and HSP90 are important mediators of the acquired thermotolerance. Starvation and parasitism by wasps caused differential expression of the HSP genes. In response to starvation, HSP90 transcripts increased to a greater extent than HSP70, while in contrast, HSP70 transcripts increased to a greater extent than those of HSP90 during the first 48 h of wasp

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Section: Hsp Gene Cloningmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Differential expression of heat shock proteins and antioxidant enzymes in response to temperature, starvation, and parasitism in the Carob moth larvae, Ectomyelois ceratoniae (Lepidoptera: Pyralidae)

et al. 2020

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“…Helicoverpa armigera (Hübner) is recognized as a polyphagous and cosmopolitan insect pest and has a high damage potential for various economically important crops around the world, including cotton, corn, tomatoes, sorghum, soybeans, and tobacco [ 1 ]. Some biological characteristics, such as polyphagy, mobility, fecundity, and facultative diapauses, can increase the survival and population outbreaks of the pest in agroecosystems [ 2 ]. These pests, which attack more than 150 different host species, are considered as the most economically important insect pests in many countries, such as India, Japan, China, and Southeast Asia [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Insecticidal Activities of Chloramphenicol Derivatives Isolated from a Marine Alga-Derived Endophytic Fungus, Acremonium vitellinum, against the Cotton Bollworm, Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)

et al. 2018

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A great deal of attention has been focused on the secondary metabolites produced by marine endophytic fungi, which can be better alternatives to chemicals, such as biopesticides, for control of polyphagous pests. On the basis of its novel biocontrol attributes, chemical investigation of a marine alga-derived endophytic fungus, Acremonium vitellinum, resulted in the isolation of three chloramphenicol derivatives (compounds 1–3). Their chemical structures were elucidated by detailed analysis of their nuclear magnetic resonance spectra, high-resolution electrospray ionization mass spectrometry, and by comparison with the data available in the literature. In this paper, compound 2 was firstly reported as the natural origin of these fungal secondary metabolites. The insecticidal activities of compounds 1–3 against the cotton bollworm, Helicoverpa armigera, were evaluated. The natural compound 2 presented considerable activity against H. armigera, with an LC50 value of 0.56 ± 0.03 mg/mL (compared to matrine with an LC50 value of 0.24 ± 0.01 mg/mL). Transcriptome sequencing was used to evaluate the molecular mechanism of the insecticidal activities. The results presented in this study should be useful for developing compound 2 as a novel, ecofriendly and safe biopesticide.

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“…Ramzi, Sahragard, and Zibaee () reported that Citrullus colocynthis agglutinin significantly reduced ecological performance of Ectomyelois ceratoniae Zeller (Lepidoptera: Pyralidae) through discrepancies in intermediary metabolism of larvae. Rahimi, Hajizadeh, Zibaee, and Jalali Sendi (a, b) demonstrated that Polygonum persicaria lectin not only reduced nutritional performance and life table parameters but also induced antioxidative stress in Helicoverpa armigera Hübner (Lepidoptera: Noctuidae).…”

Section: Introductionmentioning

confidence: 99%

“…In our previous studies, entomotoxic effects of Polygonum persicaria agglutinin (PPA) were determined on life table parameters, nutrition and antioxidant responses of H. armigera (Rahimi et al, ; Rahimi, Hajizadeh, Zibaee, & Jalali Sendi, ). Since there is no report on the effects of plant lectins on immune systems of insect, the current study was designed to explore this potentiality in PPA on the numbers of hemocytes, phenoloxidase activity, and expression of some genes involved in immune responses.…”

Section: Introductionmentioning

confidence: 99%

Changes in immune responses of Helicoverpa armigera Hübner followed by feeding on Knotgrass, Polygonum persicaria agglutinin

Rahimi

Hajizadeh

Zibaee

et al. 2019

Arch Insect Biochem Physiol

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There is no study implying the effect of plant lectins on insect immune elements in both challenged and nonchallenged conditions with entomopathogenic agents. Lectins may bind to immune receptors on the surface of insect hemocytes, thus inducing or even disabling common immune functions including hemocyte counts, nodulation/encapsulation, phenoloxidase activity, and synthesis of antimicrobial peptides. In the present study, effect of Polygonum persicaria L. agglutinin (PPA) on immune responses of Helicoverpa armigera Hübner was investigated by feeding artificial diet treated to the larvae. Subsequently hemocyte count and expression of some immune-related genes were considered for analyses. The two groups of larvae including control and PPA-treated (1%) were divided into four subgroups of intact, Tween-80 injected, latex-bead injected and Beauveria bassiana-injected. Except for intact larvae, the highest numbers of total and differential hemocyte counts were recorded 12 hr postinjection, however, the PPA-fed larvae showed a significantly lower hemocyte counts compared to control.The number of nodules in PPA-fed larvae was significantly lower than control, but the injected larvae of both control and PPA showed the highest nodulation 24 hr postinjection.Although the highest activity of phenoloxidase was observed 12 and 24 hr postinjection but its activity significantly decreased in PPA-fed larvae compared to control. Gene expression of antimicrobial peptides including attacin, Arch. Insect Biochem. Physiol. 2019;101:e21543.wileyonlinelibrary.com/journal/arch

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Effect of Polygonum persicaria (Polygonales: Polygonaceae) Extracted Agglutinin on Life Table and Antioxidant Responses in Helicoverpa armigera (Lepidoptera: Noctuidae) Larvae

Cited by 25 publications

References 42 publications

Differential expression of heat shock proteins and antioxidant enzymes in response to temperature, starvation, and parasitism in the Carob moth larvae, Ectomyelois ceratoniae (Lepidoptera: Pyralidae)

Differential expression of heat shock proteins and antioxidant enzymes in response to temperature, starvation, and parasitism in the Carob moth larvae, Ectomyelois ceratoniae (Lepidoptera: Pyralidae)

Insecticidal Activities of Chloramphenicol Derivatives Isolated from a Marine Alga-Derived Endophytic Fungus, Acremonium vitellinum, against the Cotton Bollworm, Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)

Changes in immune responses of Helicoverpa armigera Hübner followed by feeding on Knotgrass, Polygonum persicaria agglutinin

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