Volume 9, Issue 1 (2020)
JCP 2020, 9(1): 65-79 |
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Fathipour Y, Kianpour R, Bagheri A, Karimzadeh J, Hosseini Naveh V, Mehrabadi M. Targeting Plutella xylostella digestive enzymes by applying resistant Brassicaceae host cultivars. JCP 2020; 9 (1) :65-79
URL: http://jcp.modares.ac.ir/article-3-31365-en.html
URL: http://jcp.modares.ac.ir/article-3-31365-en.html
Yaghoub Fathipour 
1, Roja Kianpour2 , Abdoolnabi Bagheri3 , Javad Karimzadeh4 , Vahdi Hosseini Naveh5 , Mohammad Mehrabadi2
1, Roja Kianpour2 , Abdoolnabi Bagheri3 , Javad Karimzadeh4 , Vahdi Hosseini Naveh5 , Mohammad Mehrabadi2
1- Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran. , fathi@modares.ac.ir
2- Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran.
3- Plant Protection Research Department, Hormozgan Agricultural and Natural Resources Research and Education Center, Agricultural Research Education and Extension Organization (AREEO), Bandar Abbas, Iran.
4- Plant Protection Research Department, Isfahan Agricultural and Natural Resources Research and Education Center, Agricultural Research Education and Extension Organization (AREEO), Isfahan, Iran.
5- Department of Plant Protection, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran.
2- Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran.
3- Plant Protection Research Department, Hormozgan Agricultural and Natural Resources Research and Education Center, Agricultural Research Education and Extension Organization (AREEO), Bandar Abbas, Iran.
4- Plant Protection Research Department, Isfahan Agricultural and Natural Resources Research and Education Center, Agricultural Research Education and Extension Organization (AREEO), Isfahan, Iran.
5- Department of Plant Protection, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran.
Abstract: (4471 Views)
The diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae) is one of the most destructive insect pests, feeding exclusively on wild and cultivated cruciferous species. The attacked plants produce considerable amount of glucosinolates in response to insects’ feeding. Herein, we studied digestive activities of P. xylostella on four different genotypes of family Brassicaceae including two canola cultivars (SLM046 and RGS003) and two cabbage cultivars (Green-Cornet and Glob-Master). The highest proteolytic and amylolytic activities of P. xylostella were observed on Green-Cornet and the lowest occurred on RGS003 and Glob-Master, respectively. The highest activity of α-glucosidase and β-glucosidases were observed on Green-Cornet and SLM046 and the lowest was observed on Glob-Master and RGS003. The zymogram analysis revealed different isozymes of protease, trypsin-like and α-amylase in the midgut extract of P. xylostella. Activity of the above mentioned isozymes was inhibited in larvae feeding on RGS003 and Glob Master as resistant host cultivars. Also, larvae feeding on the resistant genotypes showed more glucosidase activities, indicating possibility of high glycosinolate existence in the resistant genotypes. By these results we can state that host plant property can affect insect digestive physiology through inhibiting digestive enzyme activities. These findings provide insights into the direct effects of host plants on insect physiology which are conducive to change in insect fitness.
Article Type: Original Research |
Subject:
Insect Physiology
Received: 2019/03/16 | Accepted: 2019/08/19 | Published: 2019/12/9
Received: 2019/03/16 | Accepted: 2019/08/19 | Published: 2019/12/9
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