Acta Botanica Croatica, Vol. 33 No. 1, 1974.
Izvorni znanstveni članak
Crown-Gall Tumors on Bean Leaves Induced by Agrobacterium tumefaciens (I 1-4 i B6)
Marijana Krsnik Rasol
; Hrvatska
Sažetak
Agrobacterium tumefaciens, strains B6 and I1-4 and crown-gall tumors, which they induced on bean leaves, were investigated by means of light and electron microscopy. The results show:
1) When the bacteria of the strain I1-4 are reisolated from primary tumors their colonies show the S-forms as a rule. The view, that at low temperatures the R-form changes to the S-form, cannot be confirmed.
2) In the cells of both strains of Agrobacterium tumefaciens it has never been possible to prove any signs of the presence of a bacteriophage.
3) In living tumor cells the only cell organelles, which showed considerable ultrastructural changes, were the plastids. In other cell organelles no ultrastructural changes could be stated with certainty.
Ključne riječi
Hrčak ID:
157912
URI
Datum izdavanja:
31.12.1974.
Posjeta: 843 *