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- Title
Dynamic morphologies of pollen plastids visualised by vegetative-specific FtsZ1–GFP in Arabidopsis thaliana.
- Authors
Fujiwara, Makoto T.; Hashimoto, Haruki; Kazama, Yusuke; Hirano, Tomonari; Yoshioka, Yasushi; Aoki, Seishiro; Sato, Naoki; Itoh, Ryuuichi D.; Abe, Tomoko
- Abstract
The behaviour and multiplication of pollen plastids have remained elusive despite their crucial involvement in cytoplasmic inheritance. Here, we present live images of plastids in pollen grains and growing tubes from transgenic Arabidopsis thaliana lines expressing stroma-localised FtsZ1–green-fluorescent protein fusion in a vegetative cell-specific manner. Vegetative cells in mature pollen contained a morphologically heterogeneous population of round to ellipsoidal plastids, whilst those in late-developing (maturing) pollen included plastids that could have one or two constriction sites. Furthermore, plastids in pollen tubes exhibited remarkable tubulation, stromule (stroma-filled tubule) extension, and back-and-forth movement along the direction of tube growth. Plastid division, which involves the FtsZ1 ring, was rarely observed in mature pollen grains.
- Subjects
PLASTIDS; PLANT cells &; tissues; ARABIDOPSIS thaliana; POLLEN; PLANT pigments
- Publication
Protoplasma, 2010, Vol 242, Issue 1-4, p19
- ISSN
0033-183X
- Publication type
Article
- DOI
10.1007/s00709-010-0119-7