Role of Plant Growth Regulators in the Insect Pest Control: A Quick Outlook

Ghoneim, Karem

doi:10.31031/cojrr.2018.01.000520

Cited by 2 publications

(1 citation statement)

References 12 publications

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“…However, there is evidence showing that GA can be cytotoxic against the melon fruit fly ( Bactrocera cucurbitae ) (Coquillett) [ 68 ], different types of Lepidopteran larvae, and migratory locust ( Locusta migratoria migratoria ) [ 69 , 70 , 71 , 72 ]. Gibberellic acid also negatively affects fall armyworm ( S. frugiperda ) food consumption and female oviposition [ 73 , 74 ]. The data also agree with previous studies showing that pea aphids benefit from feeding on plants that are highly colonized by AM fungi compared to non-mycorrhizal control plants [ 20 , 32 , 57 ].…”

Section: Discussionmentioning

confidence: 99%

Phytohormone Profile of Medicago in Response to Mycorrhizal Fungi, Aphids, and Gibberellic Acid

Olson

Berry

Riggs

et al. 2022

Plants

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Although gibberellic acid (GA) is widely used in agriculture, it is unclear whether exogenous GA makes aphid-infested, mycorrhizal plants more susceptible to herbivory. This study investigates the role of GA in modulating defenses in barrel medic plants (Medicago truncatula) that are infested with pea aphids (Acyrthosiphon pisum) and colonized by the beneficial symbiont Rhizophagus intraradices. Mock- and R. intraradices-inoculated potted plants were grown in a topsoil: sand mix for 42 days and were treated with GA or solvent. Subsequently, plants were exposed to herbivory or no aphid herbivory for 36 h and 7 days. Afterwards, plant growth parameters, aphid fitness, and foliar phytohormone concentrations were measured. The results revealed that GA regulates plant defenses during arbuscular mycorrhizal (AM) fungus–plant–aphid interactions as aphids that fed for 7 days on mycorrhizal, GA-untreated plants weighed more than those that fed on mycorrhizal, GA-treated plants. No major differences were detected in phytohormone levels at 36 h. Overall, mycorrhizal plants showed more shoot biomass compared to non-mycorrhizal controls. The arbuscule density and fungal biomass of R. intraradices were not altered by exogenous GA and aphid herbivory based on molecular markers. This study indicates that exogenous GA may help reduce aphid fitness when feeding on mycorrhizal plants.

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Section: Discussionmentioning

confidence: 99%

Phytohormone Profile of Medicago in Response to Mycorrhizal Fungi, Aphids, and Gibberellic Acid

Olson

Berry

Riggs

et al. 2022

Plants

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Indole-3 asetik asit’in Pimpla turionellae L., 1758 (Hymenoptera: Ichneumonidae) ve Galleria mellonella L., 1758 (Lepidoptera: Pyralidae)’nın konukçu-parazitoit sisteminde fenoloksidaz ve hemolitik aktivitelerine beslenme yoluyla etkileri

AKSAN

Uçkan

2022

TED

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Gıda ihtiyacının sürekliliği, modern tarımın büyük ölçüde kimyasal girdilere bağımlı hale gelmesine neden olmuştur. Bitki büyüme düzenleyicileri, kemosterilant aktiviteye sahip doğal olarak oluşan veya sentetik bitki kaynaklı kimyasallardır ve zararlı böcekleri baskılama potansiyeline sahiptir. Zararlılarla birlikte, agroekolojik sistemlerdeki parazitoitler gibi hedef olmayan organizmaların, konukçuları aracılığıyla dolaylı temastan veya konukçu ve bitkilerle tritrofik etkileşim yoluyla doğrudan temastan etkilenmesi muhtemeldir. Bu çalışma bitki büyüme düzenleyicisi indol-3-asetik asidin (IAA) depolanmış ürün zararlısı Galleria mellonella L., 1758 (Lepidoptera: Pyralidae) ve parazitoit Pimpla turionellae L., 1758 (Hymenoptera: Ichneumonidae)’nın hemolitik aktivitesi ve fenoloksidaz aktivitesi üzerindeki besinsel etkilerini göstermektedir. Galleria mellonella ve P. turionellae hemolenfinin hemolitik aktivitelerinde istatistiksel olarak önemli artışlar 500, 5000 ve 10000 ppm IAA dozları tatbik edilen gruplarda gözlenmiştir. Galleria mellonella hemolenfinin fenoloksidaz aktivitesi, kontrole kıyasla tüm IAA uygulanan dozlarda önemli ölçüde azalırken, P. turionellae hemolenf fenoloksidaz aktivitesindeki azalmalar 500 ve 10000 ppm arasında anlamlı bulundu. IAA, hem konukçu hem de parazitoit bağışıklığı ile etkileşime girdiğinden, konukçu-parazitoit popülasyonu yüksek olan tarım alanlarında dikkatle kullanılmalıdır.

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Role of Plant Growth Regulators in the Insect Pest Control: A Quick Outlook

Cited by 2 publications

References 12 publications

Phytohormone Profile of Medicago in Response to Mycorrhizal Fungi, Aphids, and Gibberellic Acid

Phytohormone Profile of Medicago in Response to Mycorrhizal Fungi, Aphids, and Gibberellic Acid

Indole-3 asetik asit’in Pimpla turionellae L., 1758 (Hymenoptera: Ichneumonidae) ve Galleria mellonella L., 1758 (Lepidoptera: Pyralidae)’nın konukçu-parazitoit sisteminde fenoloksidaz ve hemolitik aktivitelerine beslenme yoluyla etkileri

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