Integument cell gelatinisation-the fate of the integumentary cells in Hieracium and Pilosella (Asteraceae).

ABSTRACT: Members of the genera Hieracium and Pilosella are model plants that are used to study the mechanisms of apomixis. In order to have a proper understanding of apomixis, knowledge about the relationship between the maternal tissue and the gametophyte is needed. In the genus Pilosella, previous authors have described the specific process of the "liquefaction" of the integument cells that surround the embryo sac. However, these observations were based on data only at the light microscopy level. The main aim of our paper was to investigate the changes in the integument cells at the ultrastructural level in Pilosella officinarum and Hieracium alpinum. We found that the integument peri-endothelial zone in both species consisted of mucilage cells. The mucilage was deposited as a thick layer between

SUBMITTER: Plachno BJ 

PROVIDER: S-EPMC5653734 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature