𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Floral development and expression of floral homeotic genes are influenced by cytokinins

✍ Scribed by J.J. Estruch; A. Granell; G. Hansen; E. Prinsen; P. Redig; H. Van Onckelen; Z. Schwarz-Sommer; H. Sommer; A. Spena

Book ID
104463498
Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
817 KB
Volume
4
Category
Article
ISSN
0960-7412

No coin nor oath required. For personal study only.

✦ Synopsis

Tobacco plants that are somatic mosaics for the expression of a cytokinin‐synthesizing gene have viviparous leaves. Epiphyllous buds can be either vegetative or floral. Floral adventitious buds can be either normal or abnormal. Abnormalities of floral development correlate with: (i) a local activation of the cytokinin‐synthesizing gene, (ii) a drastic increase in floral cytokinin content, and (iii) a decrease in the steady‐state levels of mRNA homologues of the homeotic genes DEFA, GLO and PLENA of Antirrhinum majus. Thus, these data show in planta that cytokinins, a class of phytohormones, are able to alter the development of floral organs and to decrease the expression of three homeotic floral genes.

📜 SIMILAR VOLUMES

MADS-box genes active in developing poll
MADS-box genes active in developing pollen cones of Norway spruce (Picea abies) are homologous to the B-class floral homeotic genes in angiosperms
✍ Sundstr�m, Jens ;Carlsbecker, Annelie ;Svensson, Mats E. ;Svenson, Marie ;Johans 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 885 KB

The reproductive organs of conifers, the pollen cones and seed cones, differ in morphology from the angiosperm flower in several fundamental respects. In this report we present evidence to suggest that the two plant groups, in spite of these morphological differences and the long evolutionary distan