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Published (Version of record)CC BY V4.0, Open Access
Published (Version of record)CC BY V4.0, Open
Journal article
Regulation of Secondary Metabolism in Cannabis sativa Glandular Trichomes by Abscisic Acid and Water Deficit Stress During Late Flowering Development
Plant stress, Vol.15, 100799
03/2025
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Source: InCites
Abstract
Cannabis (Cannabis sativa L.) is a medicinally important plant of moderate drought tolerance. The glandular trichomes (GT) on female flowers of cannabis are the main site of production and storage of cannabinoids and terpenoids. While water deficit stress (WD) was shown to modulate cannabinoid content in cannabis, it remains unknown how GT regulation is affected to achieve this. We quantified the GT proteome and floral cannabinoid and terpenoid content in late flowering ‘Hindu Kush’ cannabis treated with either short-term WD or with an abscisic acid (ABA) foliar spray. We found that WD and ABA changed the abundance of many of the same proteins in the GT, with changes reflecting a decrease in primary metabolic processes and an increase in stress response mechanisms. Results suggested ABA likely mediates changes in the GT indirectly by affecting salicylic acid and ethylene signalling. WD caused the cannabinoid cannabigerolic acid to increase in content, while ABA caused monoterpene content to increase. Interestingly, proteins involved in the cannabinoid and terpenoid biosynthetic pathways either decreased in abundance or did not change in either treatment, indicating that the increased secondary metabolite content is likely driven by a process other than upregulation of the pathways’ proteins.
Details
- Title
- Regulation of Secondary Metabolism in Cannabis sativa Glandular Trichomes by Abscisic Acid and Water Deficit Stress During Late Flowering Development
- Creators
- Nicolas Dimopoulos - Southern Cross University, Faculty of Science and EngineeringQi Guo - Southern Cross UniversityBen Liu - Southern Cross UniversityRazlin Azman Halimi - Southern Cross UniversityLennard Garcia-de Heer - Southern Cross UniversityMatt Nolan - Southern Cross UniversityJos C Mieog - Southern Cross UniversityBronwyn J Barkla - Southern Cross UniversityTobias Kretzschmar - Southern Cross University
- Publication Details
- Plant stress, Vol.15, 100799
- Publisher
- Elsevier
- Grant note
- Grant funding for this project was provided from the Australian Government via the Department of Industry, Science, Energy and Resources, as part of the Cooperative Research Centres Project (CRC-P) program—Round 7—Growing the medicinal Cannabis industry—precision farming to pharmaceuticals. The CRC-P program was an industry-led research collaboration and Cann Group Ltd. was the lead partner organization.
- Identifiers
- 991013265310902368
- Academic Unit
- Research Infrastructure and Operations; Faculty of Science and Engineering
- Resource Type
- Journal article