title: Microtubule-like structures in the growing plastids or chloroplasts of two algae.
abstract: During oogenesis in Chara fibrosa, and in the enlarging, young daughter coenobia of Volvox spec., microtubule-like structures were found in growing plastids. These were appreciably bigger than the usual 240 Å cytoplasmic microtubules, measuring about 320 Å in diameter; a helical or banded organisation in the wall of these tubules was also evident. The tubules were generally present in greatest numbers when the plastids were elongating or enlarging.
authors: Research School of Biological Sciences, Australian National Univerisy, Canberra.
authors: J D
authors: JD
authors: Pickett-Heaps