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Medientyp:
E-Artikel
Titel:
DIE HEMMUNG AUXININDUZIERTER WURZELBILDUNG AN ETIOLIERTEN ERBSENEPIKOTYLEN MIT HISTON UND ANTIMETABOLITEN DER RNS- UND PROTEINSYNTHESE
Beteiligte:
Fellenberg, Günter
Erschienen:
Springer-Verlag, 1966
Erschienen in:
Planta, 71 (1966) 1, Seite 27-42
Sprache:
Deutsch
ISSN:
0032-0935;
1432-2048
Entstehung:
Anmerkungen:
Beschreibung:
Differentiation of tracheids and root formation in etiolated pea epicotyls is inhibited by actinomycin D, 5-bromouracil, calf thymus histone and chloramphenicol 48 hours after culture initiation. The formation of spots with embryonic cells is thereby not suppressed. The bromouracil-inhibition is competitively reversed by thymine. 2-Thiouracil and 8-azaguanine also inhibit root formation 48 hours after culture initiation, but this effect is not reversed by uracil or guanine. The temporal spectrum of root-inhibition induced by 5-bromouracil, calf thymus histone, chloramphenicol or actinomycin D differs from that induced by 2-TU. Like cystein and dinitrophenol, 2-TU inhibits root-formation entirely during the first five days after culture initiation. Increasing amounts of indole-3-acetic acid cause the formation of an increasing number of roots and the earlier appearance of adventive roots and bring about a prolonged phase of activity, which is inhibited by 5-bromouracil or histone. Moreover, the phases of inhibition start earlier. The temporal position of the root-inhibition phases depends on the season.