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A Biostimulant Preparation of Brown Seaweed Ascophyllum nodosum Suppresses Powdery Mildew of Strawberry
- Source :
- The Plant Pathology Journal, Vol 35, Iss 5, Pp 406-416 (2019)
- Publication Year :
- 2019
- Publisher :
- Hanrimwon Publishing Company, 2019.
-
Abstract
- Strawberry, an important fruit crop, is susceptible to a large number of pathogens that reduce fruit quality and productivity. In this study, the effect of a biostimulant prepared from Ascophyllum nodosum extract (ANE) (0.1%, 0.2%, and 0.3%) was evaluated on powdery mildew progression under greenhouse and field conditions. In the greenhouse, application of 0.2% ANE showed maximum reduction in powdery mildew progression as compared to the control. Forty-eight hour post-inoculation, foliar spray of 0.2% ANE reduced spore germination by 75%. Strawberry leaves sprayed with ANE showed higher total phenolic and flavonoid content in response to powdery mildew infection. Furthermore, application of ANE elicited defense response in strawberry plants by induction of defense-related enzymes, such as phenylalanine ammonia lyase, polyphenol oxidase, and peroxidase activity. In field conditions, foliar spray of 0.2% ANE showed a reduction of 37.2% of natural incidence of powdery mildew infection as compared to the control. ANE sprayed plant also reduces the severity of powdery mildew infection under natural conditions. These results indicate that application of ANE induces the strawberry plant's active defense against powdery mildew infection by induction of secondary metabolism and regulating the activities of defense-related enzymes.
- Subjects :
- 0106 biological sciences
Flavonoid
Phenylalanine ammonia-lyase
Biology
lcsh:Plant culture
01 natural sciences
Polyphenol oxidase
Crop
Spore germination
lcsh:SB1-1110
Podosphaera aphanis
chemistry.chemical_classification
Ascophyllum nodosum extract
food and beverages
biology.organism_classification
010602 entomology
Horticulture
chemistry
phenylalanine ammonia lyase
biology.protein
powdery mildew
strawberry
Agronomy and Crop Science
Ascophyllum
Powdery mildew
010606 plant biology & botany
Peroxidase
Subjects
Details
- Language :
- English
- ISSN :
- 15982254
- Volume :
- 35
- Issue :
- 5
- Database :
- OpenAIRE
- Journal :
- The Plant Pathology Journal
- Accession number :
- edsair.doi.dedup.....f8ca36733d5ccdff2a8d5f5fe893f48d