Cold tolerance of woodland strawberry (Fragaria vesca) is linked to Cold Box Factor 4 and the dehydrin Xero2.
J Exp Bot
; 2024 Jul 18.
Article
en En
| MEDLINE
| ID: mdl-39023232
ABSTRACT
Domesticated strawberry is susceptible to sudden frost episodes, limiting the productivity of this cash crop in regions, where they are grown during early spring. In contrast, the ancestral woodland strawberry (Fragaria vesca) has successfully colonised many habitats of the Northern Hemisphere. Thus, this species seems to harbour genetic factors promoting cold tolerance. Screening a germplasm established in frame of the German Gene Bank for Crop Wild Relatives we identified, among 70 wild accessions, a pair contrasting with respect to cold tolerance. By following the physiological, biochemical, molecular, and metabolic responses of this contrasting pair, we identified the transcription factor Cold Box Factor 4 and the dehydrin Xero-2 as molecular markers associated with superior tolerance to cold stress. Overexpression of GFP fusions with Xero-2 in tobacco BY-2 cells conferred cold tolerance to these recipient cells. A detailed analysis of the metabolome for the two contrasting genotypes allows to define metabolic signatures correlated with cold tolerance versus cold stress. This work provides a proof-of-concept for the value of crop wild relatives as genetic resources to identify genetic factors suitable to increase the stress resilience of crop plants.
Texto completo:
1
Banco de datos:
MEDLINE
Idioma:
En
Revista:
J Exp Bot
Asunto de la revista:
BOTANICA
Año:
2024
Tipo del documento:
Article
País de afiliación:
Alemania