Effects of gibberellic acid on ovarian biochemical composition and ecdysteroid amounts in the migratory locust<i>Locusta migratoria</i>(Orthoptera, Acrididae)

Abdellaoui, Khemais; Halima-Kamel, Monia Ben; Acheuk, Fatma; Soltani, Noureddine; Aribi, Nadia; Hamouda, Mohamed Habib Ben

doi:10.1080/09670874.2014.995746

Cited by 17 publications

(15 citation statements)

References 19 publications

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“…Similarly, Abdellaoui et al . (2015) correlated the very small amounts of ecdysteroids of L. migratoria with young ovaries. The ecdysteroid level increases clearly by the end of terminal oocyte maturation in adult females.…”

Section: Discussionmentioning

confidence: 95%

Effects of Pergularia tomentosa active fraction on the oogenesis of the desert locust, Schistocerca gregaria: ovarian biochemical composition, and effects on the ecdysteroid pathway

et al. 2020

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Fractionation of the methanolic extract of Pergularia tomentosa, using column chromatography, resulted in the separation of 10 fractions and only the active one (that gave mortality >70%) was kept and denoted the active fraction (AFPt). Adult female Schistocerca gregaria were treated with two concentrations of AFPt, 0.24% and 0.96%, to investigate the effect on the female reproductive potential. Both concentrations of AFPt significantly increased the duration between adult emergence and first oviposition, as well as affected fecundity and fertility. Furthermore, the effects of AFPt on vitellogenesis and ecdysteroid titres were examined. Biochemical analyses revealed a significant decrease in protein, lipid and carbohydrate contents in ovaries. This study also showed that AFPt induced a significant decrease in the ovarian ecdysteroids levels, as well as the haemolymph ecdysteroid titres. The transcript levels of the ecdysteroid synthesis enzymes Spook and Shadow were significantly decreased when treated with the highest concentration of AFPt, while transcript levels of the ecdysteroid synthesis enzymes Phantom and Disembodied increased significantly in animals treated with AFPt. Treatment with AFPt also resulted in a significantly higher transcript level of both the ecdysone receptor (EcR) and its partner ultraspiracle/retinoid‐X‐receptor (USP/RXR).

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Section: Discussionmentioning

confidence: 95%

Effects of Pergularia tomentosa active fraction on the oogenesis of the desert locust, Schistocerca gregaria: ovarian biochemical composition, and effects on the ecdysteroid pathway

et al. 2020

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“…GA3 is a growth hormone that is beneficial to plants (Gelmesa et al ., ; Hasanuzzaman Akand et al ., ); however, few studies focus on the possible adverse effects of this hormone on insect pests (Henneberry et al ., ; Greany & Shapiro, ; Altuntaş et al ., ; Abdellaoui et al ., ). The results of the present study clearly reveal its adverse effects on the nutritional physiology of H. armigera .…”

Section: Discussionmentioning

confidence: 99%

Antifeedant and cytotoxic activity of gibberellic acid against Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)

et al. 2019

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The present study investigates the effect of gibberellic acid (GA3), a terpenoid and phytohormone, on the digestive physiology and intermediary metabolism of the cotton bollworm Helicoverpa armigera Hübner (Lepidoptera, Noctuidae). Incorporation of GA3 (800 μg g−1 diet) in an artificial diet results in significant reductions in the rates of diet consumption and the efficiency of conversion of food consumption by by H. armigera larvae. The relative growth rate decreases as the concentration increases. The relative α‐amylase activity in sixth‐instar larvae of H. armigera decreases significantly after ingestion of four concentrations of GA3. Histological studies of the midgut in GA3‐treated larvae (800 μg g−1 diet) show degeneration of the epithelial cells. The alanine and aspartate aminotransferase activity decreases at the highest concentration. However, acid phosphatase, alkaline phosphatase, γ‐glutamyl transferase and lactate dehydrogenase activity increase significantly compared with the control. The results clearly demonstrate the adverse effects of GA3 on H. armigera via interruption of nutritional physiology and metabolism.

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“…In the same way, Abdellaoui et al . () report that gibberellic acid (GA 3 ), a plant growth regulator, is responsible for the extension of the pre‐ovipositional phase and the egg laying rhythm, the delay in the development of ovaries, and the reduced length of terminal oocyte in L. migratoria . Additionally, biochemical analyses show that GA 3 causes disturbances in the incorporation of the haemolymph metabolites in the oocyte, resulting in a significant reduction in their concentrations in the ovaries and a significant reduction of ecdysteroid titres both in the ovaries and freshly laid eggs.…”

Section: Discussionmentioning

confidence: 99%

Physiological and biochemical effects of Olea europaea leaf extracts from four phenological growth stages on the oogenesis of female locust Locusta migratoria

et al. 2018

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The effects of olive leaf extract (OLE) are studied on several reproductive variables and the ovarian biochemical composition of Locusta migratoria (Orthoptera: Acrididae) adult females. The methanolic extracts are prepared from the leaves sampled during four phenological growth stages of olive tree: cluster formation (Cf), swelling inflorescence buds (Sib), full flowering (Ff) and endocarp hardening (Eh). When applied to adult females during the pre-ovipositional phase, the treatment elicites a significant adverse effect on their reproductive potential. Indeed, OLE significantly reduces both fecundity and fertility and affects oocyte growth during the first gonadotrophic cycle, as indicated by measurements of ovarian weight, length of terminal oocytes and ovarian index. Furthermore, OLE is examined with respect to ovarian biochemical components. Biochemical analyses reveal a significant reduction of ovarian contents of proteins, lipids and carbohydrates, suggesting a disruption in the incorporation of the haemolymph metabolites in the oocytes and an interference of OLE with the vitellogenesis process. The antigonadotrophic effect is confirmed by a histological study of the ovaries, which clearly shows a delay in ovarian development and in yolk accumulation in the basal oocytes of treated females. The most effect is noted with the extract prepared from the leaves collected at the swelling inflorescence buds for all measured parameters, which appears to be related to its high content of polyphenols. Acrididae) comprise the two major species. These species exhibit phenotypic plasticity, known as density-dependent phase polyphenism, where individuals can exist anywhere between two extreme forms (solitarious versus gregarious) that differ in their morphology, physiology, behaviour, ecology and propensity to cause agricultural damage (Lazar et al., 2016;Cullen et al., 2017). Locusts at the solitarious form cause little damage to agricultural crops but, in the gregarious phase, they are responsible for substantial damage to crops and grazing, as

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Effects of gibberellic acid on ovarian biochemical composition and ecdysteroid amounts in the migratory locustLocusta migratoria(Orthoptera, Acrididae)

Cited by 17 publications

References 19 publications

Effects of Pergularia tomentosa active fraction on the oogenesis of the desert locust, Schistocerca gregaria: ovarian biochemical composition, and effects on the ecdysteroid pathway

Effects of Pergularia tomentosa active fraction on the oogenesis of the desert locust, Schistocerca gregaria: ovarian biochemical composition, and effects on the ecdysteroid pathway

Antifeedant and cytotoxic activity of gibberellic acid against Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)

Physiological and biochemical effects of Olea europaea leaf extracts from four phenological growth stages on the oogenesis of female locust Locusta migratoria

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