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Published (Version of Record)CC BY-NC V4.0, Open Access
Journal article
Diversity and Bioactivity of Endophytic Actinobacteria Associated with Grapevines
Current microbiology, Vol.79(12), pp.390-390
2022
PMID: 36329295
Abstract
Grapevine trunk diseases (GTDs) are a significant problem for New Zealand viticulture. Endophytic actinobacteria are of interest as potential biocontrol agents due to their ability to inhibit plant pathogens and improve plant growth. However, no studies have investigated the diversity of actinobacteria associated with grapevines in New Zealand vineyards and their bioactivity. Actinobacteria diversity in different ‘Sauvignon blanc’ vine tissues from three vineyards (conventional and organic management, and different vine ages) was assessed using different methods and media. Forty-six endophytic actinobacteria were isolated, with more isolates recovered from roots (n = 45) than leaves (n = 1) and shoot internodes (n = 0). More isolates were recovered from the organic (n = 21) than conventional (n = 8) vineyard, mature (25-year old; n = 21) than young (2-year old; n = 2) vines and using a tissue maceration technique (n = 40). Actinomycete Isolation Agar, International Streptomyces Project 2, and Starch Casein media were effective for actinobacteria isolation. Most of the isolates recovered belonged to Streptomyces, with one isolate identified as Mycolicibacterium. Forty isolates were assessed for antifungal activity and plant growth-promoting (PGP) characteristics. Of these, 13 isolates had antifungal activity against test GTD pathogens (Dactylonectria macrodidyma, Eutypa lata, Ilyonectria liriodendri, Neofusicoccum parvum, and N. luteum). Eighteen isolates exhibited more than one PGP trait; 25siderophore production (n = 25), phosphate solubilization (n = 6), and indole acetic acid production (n = 16). Two strains, Streptomyces sp. LUVPK-22 and Streptomyces sp. LUVPK-30, exhibited the best antifungal and PGP properties. This study revealed the diversity of culturable endophytic actinobacteria from grapevines in New Zealand vineyards and their biocontrol potential against GTD pathogens.
Details
- Title
- Diversity and Bioactivity of Endophytic Actinobacteria Associated with Grapevines
- Authors/Creators
- Patanun Kanjanamaneesathian - Lincoln UniversityAnish Shah - Lincoln UniversityHayley Ridgway - Lincoln UniversityE. Eirian Jones - Faculty of Agriculture and Life Sciences, Lincoln University
- Publication Details
- Current microbiology, Vol.79(12), pp.390-390
- Publisher
- Springer US
- Grant note
- Faculty of Agriculture and Life Sciences, Lincoln University Postgraduate funding Lincoln University
- Identifiers
- 991005592642007891
- Copyright
- © The Author(s) 2022
- Murdoch Affiliation
- School of Agricultural Sciences
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.97 Plant Pathology
- 3.97.556 Microbial Biocontrol
- Web Of Science research areas
- Microbiology
- ESI research areas
- Microbiology