Open AccessInfluence of N-hydroxyurea on the growth of seedlings and the process of crown-gall tumour formation on sunflower plants
Author(s) -
A. Rennert
Publication year - 2015
Publication title -
acta societatis botanicorum poloniae
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 29
eISSN - 2083-9480
pISSN - 0001-6977
DOI - 10.5586/asbp.1978.005
Subject(s) - sunflower , gall , agrobacterium tumefaciens , transformation (genetics) , crown (dentistry) , biology , plant cell , plant growth , dna synthesis , cell growth , dna , botany , chemistry , horticulture , biochemistry , gene , medicine , dentistry
Hydroxyurea (HU) strongly inhibits formation of tumours induced with Agrobacterium tumefaciens in sunflower stems. This effect may partly be ascribed to the direct action of this substance on the bacterium. The course of the HU activity curve in the transformation process leads, however, to the supposition that it acts mainly on the host cells at the time corresponding to the induction phase. Maximal plant cell susceptibility to HU coincides with the wave of DNA synthesis induced by injury to the plant. Under the experimental conditions the time of HU activity in the tissues of the control test plant was limited, and the effects receded during its growth and development