Article Figures & Data
Figures
- Fig. 1.
Idealized model of sugar-analog metabolism. Arrows indicate different steps in transport and metabolism of sugar analogs. Crosses through arrows indicate that, according to the idealized model (shown in blue), the indicated compounds do not progress through that step. Selected exceptions to the idealized model are shown in red and italicized. “1” refers to reference by Stoop and Pharr (1993). “2” refers to reference by Komor et al. (1985).
- Fig. 2.
Effects of high concentrations of exogenous sugar on seedling development. Wild-type ArabidopsIs seedlings were grown on the indicated media for 16 d prior to photographing. The red bars indicate 2 mm.
- Fig. 3.
Models for inhibition of early seedling development by Glc and ABA. Glc and ABA may inhibit seed germination and early seedling development via one of the following mechanisms, or by a combination of two or more of them. A, Glc and ABA may act in the same pathway, with ABA acting first. B, Glc and ABA may act in the same pathway, with Glc acting first. C, Glc and ABA may act via converging pathways. D, Glc and ABA may act via completely independent pathways.
Tables
Mutants Original Selection Loci References rsr Reduced sensitivity to Suc induction of patatin expression Martin et al., 1997 lba Reduced sensitivity to Suc induction of β-amylase expression Mita et al., 1997b hba Increased sensitivity to Suc induction of β-amylase expression Mita et al., 1997a sun Reduced sensitivity to Suc repression of plastocyanin expression sun6 Is allelic to abi4 Dijkwel et al., 1997; Huijser et al., 2000 sis Reduced sensitivity to Glc or Suc-mediated inhibition of early seedling development sis1 Is allelic toctr1sis4 Is allelic toaba2sis5 Is allelic to aba4 Laby et al., 2000; S. Gibson, R. Laby, and D. Kim, unpublished data gin Reduced sensitivity to Glc-mediated inhibition of early seedling development gin1 Is allelic to aba2gin6 Is allelic toabi4 Zhou et al., 1998; Arenas-Huertero et al., 2000; J. Sheen, personal communication prl Increased sensitivity to sugar-mediated inhibition of early seedling development PRL1 Encodes a WD-40 protein Németh et al., 1998; Bhalerao et al., 1999
Jump to section
- Article
- USE OF SUGAR ANALOGS TO CHARACTERIZE PLANT SUGAR RESPONSES AND RESPONSE PATHWAYS
- WHICH SUGAR ANALOGS ARE REALLY “NON-METABOLIZABLE”?
- DO HEXOKINASES ACT AS SENSORS?
- SNF1-RELATED PROTEIN KINASES ACT AS “METABOLIC SENSORS”
- IDENTIFYING SUGAR-RESPONSE MUTANTS
- MANY SUGAR-RESPONSE MUTANTS ARE OSMO-TOLERANT
- MANY SUGAR-RESPONSE MUTANTS ARE ALSO DEFECTIVE IN PHYTOHORMONE RESPONSE OR METABOLISM
- CONCLUSIONS
- ACKNOWLEDGMENTS
- Footnotes
- LITERATURE CITED
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