Tags: phytohormones

Dormancy breaking in Fagus sylvatica seeds is linked to formation of abscisic acid-glucosyl ester

Submitted by Kateřina Eliášová on Thu, 09/26/2019 - 13:20

Seed dormancy is an adaptive mechanism that allows seed germination under suitable environmental conditions. Germination of stored dormant seeds proceeds after dormancy breaking induced by stratification. To improve understanding of dormancy breaking in beechnuts, we: investigated effects of moisture content and temperature during storage; analysed contents of abscisic acid, abscisic acid metabolites and indole-3-acetic acid in embryonic axes during storage and stratification; and histochemically localized storage proteins.

Profiles of endogenous phytohormones over the course of Norway spruce somatic embryogenesis

Submitted by Kateřina Eliášová on Tue, 08/21/2018 - 13:24

Conifer somatic embryogenesis (SE) is a process driven by exogenously supplied plant growth regulators (PGRs). Exogenous PGRs and endogenous phytohormones trigger particular ontogenetic events. Complex mechanisms involving a number of endogenous phytohormones control the differentiation of cells and tissues, as well as the establishment of structures and organs. Most of the mechanisms and hormonal functions in the SE of conifers have not yet been described.

Physiology and role of plant growth regulators in somatic embryogenesis

Submitted by Zuzana Vondráková on Tue, 02/13/2018 - 09:08

Vondráková Z, Krajňáková J, Fischerová L, Vágner M, Eliášová K:

Physiology and role of plant growth regulators in somatic embryogenesis. 

In: Vegetative Propagation of Forest Trees, ed. Park YS, Bonga JM, Moon HK, National Institute of Forest Trees, Seoul, Korea, pp. 123-169, 2016.