Defensive Mechanisms in Cucurbits against Melon Fly (<i>Bactrocera cucurbitae</i>) Infestation through Excessive Production of Defensive Enzymes and Antioxidants

Melon fly (<i>Bactrocera cucurbitae</i>) is the most common pest of cucurbits, and it directly causes damage to cucurbit fruits in the early developmental stage. The infection of fruit tissues induces oxidative damage through increased generation of cellular reactive oxygen species. The...

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Autores principales: Madhusudana Somegowda, S. Raghavendra, Shankarappa Sridhara, Achur. N. Rajeshwara, Siddanakoppalu. N. Pramod, S. Shivashankar, Feng Lin, Tarek K Zin El-Abedin, Shabir Hussain Wani, Hosam O. Elansary
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Publicado: MDPI AG 2021
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Acceso en línea:https://doaj.org/article/e53adee615a74ee39f71cb58b19af56b
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spelling oai:doaj.org-article:e53adee615a74ee39f71cb58b19af56b2021-11-11T18:22:40ZDefensive Mechanisms in Cucurbits against Melon Fly (<i>Bactrocera cucurbitae</i>) Infestation through Excessive Production of Defensive Enzymes and Antioxidants10.3390/molecules262163451420-3049https://doaj.org/article/e53adee615a74ee39f71cb58b19af56b2021-10-01T00:00:00Zhttps://www.mdpi.com/1420-3049/26/21/6345https://doaj.org/toc/1420-3049Melon fly (<i>Bactrocera cucurbitae</i>) is the most common pest of cucurbits, and it directly causes damage to cucurbit fruits in the early developmental stage. The infection of fruit tissues induces oxidative damage through increased generation of cellular reactive oxygen species. The effects of melon fly infestation on the production of defensive enzymes and antioxidant capabilities in five cucurbit species, namely, bottle gourd, chayote, cucumber, snake gourd, and bitter gourd, were investigated in this study. The total phenolic and flavonoid content was considerably higher in melon fly infestation tissues compared to healthy and apparently healthy tissues. The chayote and bottle gourd tissues expressed almost 1.5- to 2-fold higher phenolic and flavonoid contents compared to the tissues of bitter gourd, snake gourd, and cucumber upon infestation. Defensive enzymes, such as peroxidase (POD), superoxide dismutase (SOD), polyphenol oxidase (PPO), and catalase (CAT), were high in healthy and infected tissues of chayote and bottle gourd compared to bitter gourd, snake gourd, and cucumber. The activity of POD (60–80%), SOD (30–35%), PPO (70–75%), and CAT (40–50%) were high in infected chayote and bottle gourd tissue, representing resistance against infestation, while bitter gourd, snake gourd, and cucumber exhibited comparatively lower activity suggesting susceptibility to melon fly infection. The antioxidant properties were also high in the resistant cucurbits compared to the susceptible cucurbits. The current research has enlightened the importance of redox-regulatory pathways involving ROS neutralization through infection-induced antioxidative enzymes in host cucurbit resistance. The melon fly infestation depicts the possible induction of pathways that upregulate the production of defensive enzymes and antioxidants as a defensive strategy against melon fly infestation in resistant cucurbits.Madhusudana SomegowdaS. RaghavendraShankarappa SridharaAchur. N. RajeshwaraSiddanakoppalu. N. PramodS. ShivashankarFeng LinTarek K Zin El-AbedinShabir Hussain WaniHosam O. ElansaryMDPI AGarticlemelon flyROSantioxidantdefensive enzymesphenols and flavonoidssuperoxide dismutaseOrganic chemistryQD241-441ENMolecules, Vol 26, Iss 6345, p 6345 (2021)
institution DOAJ
collection DOAJ
language EN
topic melon fly
ROS
antioxidant
defensive enzymes
phenols and flavonoids
superoxide dismutase
Organic chemistry
QD241-441
spellingShingle melon fly
ROS
antioxidant
defensive enzymes
phenols and flavonoids
superoxide dismutase
Organic chemistry
QD241-441
Madhusudana Somegowda
S. Raghavendra
Shankarappa Sridhara
Achur. N. Rajeshwara
Siddanakoppalu. N. Pramod
S. Shivashankar
Feng Lin
Tarek K Zin El-Abedin
Shabir Hussain Wani
Hosam O. Elansary
Defensive Mechanisms in Cucurbits against Melon Fly (<i>Bactrocera cucurbitae</i>) Infestation through Excessive Production of Defensive Enzymes and Antioxidants
description Melon fly (<i>Bactrocera cucurbitae</i>) is the most common pest of cucurbits, and it directly causes damage to cucurbit fruits in the early developmental stage. The infection of fruit tissues induces oxidative damage through increased generation of cellular reactive oxygen species. The effects of melon fly infestation on the production of defensive enzymes and antioxidant capabilities in five cucurbit species, namely, bottle gourd, chayote, cucumber, snake gourd, and bitter gourd, were investigated in this study. The total phenolic and flavonoid content was considerably higher in melon fly infestation tissues compared to healthy and apparently healthy tissues. The chayote and bottle gourd tissues expressed almost 1.5- to 2-fold higher phenolic and flavonoid contents compared to the tissues of bitter gourd, snake gourd, and cucumber upon infestation. Defensive enzymes, such as peroxidase (POD), superoxide dismutase (SOD), polyphenol oxidase (PPO), and catalase (CAT), were high in healthy and infected tissues of chayote and bottle gourd compared to bitter gourd, snake gourd, and cucumber. The activity of POD (60–80%), SOD (30–35%), PPO (70–75%), and CAT (40–50%) were high in infected chayote and bottle gourd tissue, representing resistance against infestation, while bitter gourd, snake gourd, and cucumber exhibited comparatively lower activity suggesting susceptibility to melon fly infection. The antioxidant properties were also high in the resistant cucurbits compared to the susceptible cucurbits. The current research has enlightened the importance of redox-regulatory pathways involving ROS neutralization through infection-induced antioxidative enzymes in host cucurbit resistance. The melon fly infestation depicts the possible induction of pathways that upregulate the production of defensive enzymes and antioxidants as a defensive strategy against melon fly infestation in resistant cucurbits.
format article
author Madhusudana Somegowda
S. Raghavendra
Shankarappa Sridhara
Achur. N. Rajeshwara
Siddanakoppalu. N. Pramod
S. Shivashankar
Feng Lin
Tarek K Zin El-Abedin
Shabir Hussain Wani
Hosam O. Elansary
author_facet Madhusudana Somegowda
S. Raghavendra
Shankarappa Sridhara
Achur. N. Rajeshwara
Siddanakoppalu. N. Pramod
S. Shivashankar
Feng Lin
Tarek K Zin El-Abedin
Shabir Hussain Wani
Hosam O. Elansary
author_sort Madhusudana Somegowda
title Defensive Mechanisms in Cucurbits against Melon Fly (<i>Bactrocera cucurbitae</i>) Infestation through Excessive Production of Defensive Enzymes and Antioxidants
title_short Defensive Mechanisms in Cucurbits against Melon Fly (<i>Bactrocera cucurbitae</i>) Infestation through Excessive Production of Defensive Enzymes and Antioxidants
title_full Defensive Mechanisms in Cucurbits against Melon Fly (<i>Bactrocera cucurbitae</i>) Infestation through Excessive Production of Defensive Enzymes and Antioxidants
title_fullStr Defensive Mechanisms in Cucurbits against Melon Fly (<i>Bactrocera cucurbitae</i>) Infestation through Excessive Production of Defensive Enzymes and Antioxidants
title_full_unstemmed Defensive Mechanisms in Cucurbits against Melon Fly (<i>Bactrocera cucurbitae</i>) Infestation through Excessive Production of Defensive Enzymes and Antioxidants
title_sort defensive mechanisms in cucurbits against melon fly (<i>bactrocera cucurbitae</i>) infestation through excessive production of defensive enzymes and antioxidants
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/e53adee615a74ee39f71cb58b19af56b
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