Lessons from anhydrobiosis in seeds: How not to die when dry - Institut Agro Rennes-Angers Accéder directement au contenu
Article Dans Une Revue Cryobiology Année : 2018

Lessons from anhydrobiosis in seeds: How not to die when dry

Résumé

In the so-called orthodox seeds, desiccation tolerance is one of the most fundamental properties that is part of the plant's life cycle. Acquired half way through seed development, desiccation tolerance is a prerequisite that enables dry seeds to survive during storage and provides a means to tolerate environmental stresses, thereby ensuring the dissemination of the species. However, in the dry state, longevity, or life span, of seeds can vary tremendously from years to centuries. Seed longevity is progressively acquired after desiccation tolerance upon further development. Altogether, this suggests that anhydrobiosis requires additional components to be synthesized beyond the capacity to tolerate the total loss of water. This presentation will show that seed development is an excellent model to obtain knowledge on the protective mechanisms and underlying regulatory pathways that are put in place to ensure that seeds can cope with the physical and biochemical challenges accompanying the desiccation process and long-term survival in the dry state. First, we will demonstrate how a systems biology approach can help identify distinct regulatory and mechanistic programs associated with desiccation tolerance and longevity. Next, the development of orthodox seeds will be compared to that of recalcitrant seeds that remain desiccation-sensitive at shedding in order to discriminate putative mechanisms associated desiccation tolerance from those associated with drought tolerance.
Fichier non déposé

Dates et versions

hal-02618215 , version 1 (25-05-2020)

Identifiants

Citer

Julia Buitink, Jérôme Verdier, Olivier Leprince. Lessons from anhydrobiosis in seeds: How not to die when dry. Cryobiology, 2018, 85, pp.132. ⟨10.1016/j.cryobiol.2018.10.060⟩. ⟨hal-02618215⟩
59 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More