Fathipour, Yaghoub, Kianpour, Roja, Bagheri, Abdoolnabi, Karimzadeh, Javad, Hosseini Naveh, Vahdi, Mehrabadi, Mohammad (2020). Targeting Plutella xylostella digestive enzymes by applying resistant Brassicaceae host cultivars. , 9(1), 65-79. doi: 10.48311/jcp.2020.1460
Yaghoub Fathipour; Roja Kianpour; Abdoolnabi Bagheri; Javad Karimzadeh; Vahdi Hosseini Naveh; Mohammad Mehrabadi. "Targeting Plutella xylostella digestive enzymes by applying resistant Brassicaceae host cultivars". , 9, 1, 2020, 65-79. doi: 10.48311/jcp.2020.1460
Fathipour, Yaghoub, Kianpour, Roja, Bagheri, Abdoolnabi, Karimzadeh, Javad, Hosseini Naveh, Vahdi, Mehrabadi, Mohammad (2020). 'Targeting Plutella xylostella digestive enzymes by applying resistant Brassicaceae host cultivars', , 9(1), pp. 65-79. doi: 10.48311/jcp.2020.1460
Fathipour, Yaghoub, Kianpour, Roja, Bagheri, Abdoolnabi, Karimzadeh, Javad, Hosseini Naveh, Vahdi, Mehrabadi, Mohammad Targeting Plutella xylostella digestive enzymes by applying resistant Brassicaceae host cultivars. , 2020; 9(1): 65-79. doi: 10.48311/jcp.2020.1460

Targeting Plutella xylostella digestive enzymes by applying resistant Brassicaceae host cultivars

Journal of Crop Protection
Article 6, Volume 9, Issue 1, 2020, Pages 65-79    PDF (856.8 K)
Document Type: Original Research
DOI: 10.48311/jcp.2020.1460
Authors
Yaghoub Fathipour* 1; Roja Kianpour1; Abdoolnabi Bagheri2; Javad Karimzadeh3; Vahdi Hosseini Naveh4; Mohammad Mehrabadi1
1Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran.
2Plant Protection Research Department, Hormozgan Agricultural and Natural Resources Research and Education Center, Agricultural Research Education and Extension Organization (AREEO), Bandar Abbas, Iran.
3Plant Protection Research Department, Isfahan Agricultural and Natural Resources Research and Education Center, Agricultural Research Education and Extension Organization (AREEO), Isfahan, Iran.
4Department of Plant Protection, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran.
Abstract
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.
Keywords
Brassicaceae; digestive enzymes; Plant resistance; Plutella xylostella
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