Plant Physiol BiochemJClub
Cold tolerance mechanisms in apple: integrative multi-omics reveals rootstock-mediated resilience via lipid remodeling and cryoprotectant-antioxidant flux.
Plant Physiology and Biochemistry · · Journal Article · Open access
Jahed, Saini + 1 more
Abstract ↗AI summary
The abstract is read at the publisher; the summary is JClub's.
B9 rootstock confers frost resilience in grafted ‘Gala’ apple by sustaining higher basal oxidative signals (4-fold O2•−, 2.5-fold H2O2) while floral buds stay near-baseline.
- Why it matters: Rootstocks strongly shape scion cold tolerance, but the systemic metabolic mechanisms—especially across grafted tissues and vulnerable floral stages—are not well resolved.
- What they did: Using integrated metabolomics and transcriptomics with physiological redox measurements, the study profiled floral buds, scion leaves, and rootstocks from ‘Gala’ grafted onto B9 versus M26.
- The result: B9 showed coordinated cryoprotectant accumulation, hydroxyl-rich antioxidant flavonoids, and membrane lipid remodeling (DL-GPC, LysoPA), whereas M26 displayed degradative lipid and phenolic defenses plus pro-apoptotic ceramide induction.
The findingWhy it mattersWhat they didThe result
- Open access