Effects of Sugar on Vegetative Development and Floral Transition in Arabidopsis

Masa-aki Ohto; Kiyoshi Onai; Yasuko Furukawa; Etsuko Aoki; Takashi Araki; Kenzo Nakamura

doi:10.1104/pp.127.1.252

journal article Sep 01, 2001

Effects of Sugar on Vegetative Development and Floral Transition in Arabidopsis

Masa-aki Ohto Kiyoshi Onai Yasuko Furukawa Etsuko Aoki Takashi Araki Kenzo Nakamura

Plant Physiology Vol. 127 No. 1 pp. 252-261 · Oxford University Press (OUP)

View at Publisher Save 10.1104/pp.127.1.252

Abstract

AbstractAlthough sugar has been suggested to promote floral transition in many plant species, growth on high concentrations (5% [w/v]) of sucrose (Suc) significantly delayed flowering time, causing an increase in the number of leaves at the time of flowering in Arabidopsis. The effect of high concentrations of Suc seemed to be metabolic rather than osmotic. The delay of floral transition was due to extension of the late vegetative phase, which resulted in a delayed activation of LFY expression. In addition, growth on low concentrations (1% [w/v]) of Suc slightly inhibited flowering in wild-type plants. This delay resulted from effects on the early vegetative phase. This inhibition was more pronounced intfl1, an early flowering mutant, than in the wild type. Although 1% (w/v) Suc was reported to promote floral transition of late-flowering mutants such as co,fca, and gi, floral transition in these mutants was delayed by a further increase in Suc concentration. These results suggest that sugar may affect floral transition by activating or inhibiting genes that act to control floral transition, depending on the concentration of sugars, the genetic background of the plants, and when the sugar is introduced. Growth on 1% (w/v) Suc did not restore the reduced expression levels of FT andSOC1/AGL20 in co or fcamutants. Rather, expression of FT andSOC1/AGL20 was repressed by 1% (w/v) Suc in wild-type background. The possible effects of sugar on gene expression to promote floral transition are discussed.

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References

Details

Published: Sep 01, 2001
Vol/Issue: 127(1)
Pages: 252-261
License: View

Authors

M

Masa-aki Ohto

Division of Developmental Biology, National Institute for Basic Biology, Myodaiji-cho, Okazaki 444–8585, Japan (M.O., K.O., Y.F., E.A., K.N.);

K

Kiyoshi Onai

Division of Developmental Biology, National Institute for Basic Biology, Myodaiji-cho, Okazaki 444–8585, Japan (M.O., K.O., Y.F., E.A., K.N.);

Y

Yasuko Furukawa

Division of Developmental Biology, National Institute for Basic Biology, Myodaiji-cho, Okazaki 444–8585, Japan (M.O., K.O., Y.F., E.A., K.N.);

E

Etsuko Aoki

Division of Developmental Biology, National Institute for Basic Biology, Myodaiji-cho, Okazaki 444–8585, Japan (M.O., K.O., Y.F., E.A., K.N.);

T

Takashi Araki

Department of Botany, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606–8502, Japan (T.A.); and

K

Kenzo Nakamura

Division of Developmental Biology, National Institute for Basic Biology, Myodaiji-cho, Okazaki 444–8585, Japan (M.O., K.O., Y.F., E.A., K.N.);; Laboratory of Biochemistry, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa-ku, Nagoya 464–8601, Japan (K.N.)

Cite This Article

Masa-aki Ohto, Kiyoshi Onai, Yasuko Furukawa, et al. (2001). Effects of Sugar on Vegetative Development and Floral Transition in Arabidopsis. Plant Physiology, 127(1), 252-261. https://doi.org/10.1104/pp.127.1.252

Effects of Sugar on Vegetative Development and Floral Transition in Arabidopsis

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