Diverse adaptive responses to heat and drought in the climate-resilient crop Camelina sativa

Beschreibung

Climatic variability and extreme weather events are having an increasing impact crop yield and value. Camelina sativa is an old, low-input Brassicaceae oilseed crop valued for its high-quality seeds and its adaptability to a wide range of climate conditions. Camelina's innate resilience to abiotic stress offers an opportunity to uncover stress tolerance mechanisms and explore crop plasticity important for breeding climate-tolerant oilseeds. Within the project UNTWIST (www.untwist.eu), 54 camelina accessions were collected from across Eurasia to assess the genetic and physiological diversity of camelina in response to drought and heat. Genome sequencing and population structure analysis showed that the study panel captured the diversity observed in the larger publicly available population. To investigate the multilayered responses to drought and heat stress of individual camelina biotypes, a combination open field trials and trials in controlled environment was used. Camelina demonstrated resilience to heat and drought and the population exhibited a range of different adaptive responses. Morphology and phenology showed contrasting responses to each stress. (Un)targeted metabolomics profiling revealed a reorganization of metabolism, with substantial variation in line-specific responses to each of the applied stresses. The same trend was found in leaf fatty acid composition remodeled by stress. The systems approach to dissect the cellular stress response are now used for mechanistic and predictive models as well as for developing robust markers for crop performance for variable environments.

Zeitraum	29 Mai 2025
Ereignistitel	25th ATSPB
Veranstaltungstyp	Konferenz
Ort	Tulln, ÖsterreichAuf Karte anzeigen
Bekanntheitsgrad	International