Differences in response to colchicine by differentiating xylem cells in roots ofPisum

Protoplasma - Tập 68 - Trang 79-83 - 1969
P. W. Barlow1
1Botany School, University of Oxford, UK

Tóm tắt

A 3 hour exposure of pea roots to 0.025 per cent colchicine causes the cessation of root growth and ac-tumour to form. In roots allowed to regenerate it is found that in the region of thec-tumour, metaxylem tissue fails to differentiate completely, but protoxylem is unaffected. Development of secondary xylem tissue is also inhibited in the tumour region.

Tài liệu tham khảo

Borisy, C. G., andE. W. Taylor, 1967: The mechanism of action of colchicine. Colchicine binding to sea urchin eggs and the mitotic apparatus. J. Cell Biol.34, 535–548.

Cronshaw, J., andG. B. Bouck, 1965: The fine structure of differentiating xylem elements. J. Cell Biol.24, 415–431.

Fosket, D. E., 1968: Cell division and the differentiation of wound-vessel members in cultured stem segments ofColeus. Proc. nat. Acad. Sci. (U.S.A.)59, 1089–1096.

—, 1965: Fibrous elements in plant morphogenesis. Excerpta Medica, Intern. Congr. Ser.77, 21.

Gurr, E., 1965: The rational uses of dyes in biology. p. 273, London: Leonard Hill.

Macleod, R. D., andD. Davidson, 1966: Changes in mitotic indices in roots ofVicia faba. L. II. Long-term effects of colchicine and IAA. New Phytol.65, 532–546.

—, 1968: Xylem wall deposition. Radioautographic investigations using lignin precursors. Protoplasma65, 181–205.

Shelanski, M. L., andE. W. Taylor, 1967: Isolation of a protein subunit from microtubules. J. Cell Biol.34, 549–554.