Changes in grapes composition during ripening of five Vitis vinifera L varieties as related to Tephritidae and Drosophilidae infestations

Vitis vinifera (L) is a great economically important crop. However, huge loss in fruits due to destructive pests hinders the improvement of its performance. The study of their biochemical profile, ripening dynamics, and defense mechanisms presents a great scientific interest. In this work, phenylala...

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Bibliographic Details
Published in:Physiology and molecular biology of plants 2019-11, Vol.25 (6), p.1407-1418
Main Authors: Jediyi, Hicham, Naamani, Khalid, Ait Elkoch, Abderrahim, Lemjiber, Naima
Format: Article
Language:English
Subjects:
Ammonia
Biochemistry
Biological and Medical Physics
Biomedical and Life Sciences
Biophysics
Cell Biology
Ceratitis capitata
Crop infestation
Defense mechanisms
Diptera
Drosophila suzukii
Economic importance
Fruit flies
Fruits
Grapes
Infestation
insect infestations
Life Sciences
Malondialdehyde
Maturation
Morocco
Pests
Phenylalanine
phenylalanine ammonia-lyase
Plant Physiology
Plant Sciences
Priming
Proteins
Research Article
Ripening
Sugar
sugars
Tyrosine
Vitaceae
Vitis vinifera
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Summary:Vitis vinifera (L) is a great economically important crop. However, huge loss in fruits due to destructive pests hinders the improvement of its performance. The study of their biochemical profile, ripening dynamics, and defense mechanisms presents a great scientific interest. In this work, phenylalanine ammonia lyase (PAL), tyrosine ammonia lyase (TAL) activities, proteins, sugar and malondialdehyde (MAD) were investigated during ripening of five grape varieties in Loudaya region (Marrakech, Morocco), three of them are allochthonous while two are autochthonous. The Dipterans infestations by Drosophila suzukii and Ceratitis capitata have been highlighted as a factor that stimulates the defense mechanism in ripeness stage of grapes. Sugars, proteins and MDA have shown a gradual increase in grapes maturation in all varieties. TAL activity decrease in the course of the maturation in contrast to the PAL activity increasing in the ripe grapes. High content of PAL, TAL, and MDA compounds were noted in the ripe infested grapes as compared to the healthy ones. A significant difference ( P  
ISSN:0971-5894
0974-0430
DOI:10.1007/s12298-019-00713-0