New Insights into Desiccation-Associated Gene Regulation by Lilium longiflorum ASR during Pollen Maturation and in Transgenic Arabidopsis - International Review of Cell and Molecular Biology - page 61

Figure 2.5 Venn diagrams showing the ASR (LLA23)-, glucose-, and drought-upregu-
lated genes identified based on microarray analyses. In total, 101 ASR-, 293 glucose-,
and 166 drought-inducible genes were identified via the microarray analysis. The genes
identified were grouped into the following seven groups: highly ASR-inducible genes,
highly glucose-inducible genes, highly drought-inducible genes, ASR- and glucose-
inducible genes, ASR- and drought-inducible genes, glucose- and drought-inducible
genes, and ASR-, glucose-, and drought-inducible genes. The number of genes with
expression ratios greater than two and halffold induction of expression in 35S::LLA23
plants or sixfold induction of expression in the glucose and drought treatments is indi-
cated. Numbers in parentheses represent the number of genes with a more than two
and halffold change in expression ratio in 35S::LLA23 plants or a sixfold change in expres-
sion ratio in glucose and drought-stress treatments and a less than twofold change in
expression ratio in other stress treatments.
At1g61820, and At5g02860), all the other genes contain at least one
of the four sugar-related elements (Sucrose box 3, SURE1, SRE and
W-box) in their promoters. This also reflects the existence of novel sugar-
responsive and/or other cis -acting elements involved in LLA23-inducible
gene expression. All the LLA23-inducible genes contain ABA-, auxin-,
gibberellin-, ethylene-, and/or salicylic acid-responsive element in their
promoters strongly suggesting a complicate network between hormone and
ASR-induced signaling pathways.
4.3. Response to Various Stresses Involving ABA
WDS and other abiotic stresses induce various biochemical, physiologic, and
adaptive stress in plants. Many of the changes in gene expression that occurs
in response to various stresses require the action of ABA ( Cutler et al., 2010 ;
Finkelstein and Gibson, 2002 ; Hubbard et al., 2010 ; Yamaguchi-Shinozaki
and Shinozaki, 2005 ). Thus, many stress-induced genes are ABA-inducible.