IFIBYNE   05513
INSTITUTO DE FISIOLOGIA, BIOLOGIA MOLECULAR Y NEUROCIENCIAS
Unidad Ejecutora - UE
artículos
Título:
Tomato leaf spatial expression of stress-induced Asr genes
Autor/es:
LAURA MASKIN; SARA MALDONADO; NORBERTO D. IUSEM
Revista:
MOLECULAR BIOLOGY REPORTS
Editorial:
Springer
Referencias:
Lugar: Amsterdam; Año: 2008 vol. 35 p. 501 - 505
ISSN:
0301-4851
Resumen:
Asr1 and Asr2 are water stress-inducible genes
belonging to the Asr gene family, which transcriptionally
regulate a sugar transporter gene, at least in grape. Using an
in situ RNA hybridization methodology, we determined
that, in basal conditions, expression of Asr2 in tomato leaves
is detected in the phloem tissue, particularly in companion
phloem cells. When plants are exposed to water stress, Asr2
is detected in the phloem tissue, particularly in companion
phloem cells. When plants are exposed to water stress, Asr2
regulate a sugar transporter gene, at least in grape. Using an
in situ RNA hybridization methodology, we determined
that, in basal conditions, expression of Asr2 in tomato leaves
is detected in the phloem tissue, particularly in companion
phloem cells. When plants are exposed to water stress, Asr2
is detected in the phloem tissue, particularly in companion
phloem cells. When plants are exposed to water stress, Asr2
belonging to the Asr gene family, which transcriptionally
regulate a sugar transporter gene, at least in grape. Using an
in situ RNA hybridization methodology, we determined
that, in basal conditions, expression of Asr2 in tomato leaves
is detected in the phloem tissue, particularly in companion
phloem cells. When plants are exposed to water stress, Asr2
is detected in the phloem tissue, particularly in companion
phloem cells. When plants are exposed to water stress, Asr2
regulate a sugar transporter gene, at least in grape. Using an
in situ RNA hybridization methodology, we determined
that, in basal conditions, expression of Asr2 in tomato leaves
is detected in the phloem tissue, particularly in companion
phloem cells. When plants are exposed to water stress, Asr2
is detected in the phloem tissue, particularly in companion
phloem cells. When plants are exposed to water stress, Asr2
and Asr2 are water stress-inducible genes
belonging to the Asr gene family, which transcriptionally
regulate a sugar transporter gene, at least in grape. Using an
in situ RNA hybridization methodology, we determined
that, in basal conditions, expression of Asr2 in tomato leaves
is detected in the phloem tissue, particularly in companion
phloem cells. When plants are exposed to water stress, Asr2
is detected in the phloem tissue, particularly in companion
phloem cells. When plants are exposed to water stress, Asr2
regulate a sugar transporter gene, at least in grape. Using an
in situ RNA hybridization methodology, we determined
that, in basal conditions, expression of Asr2 in tomato leaves
is detected in the phloem tissue, particularly in companion
phloem cells. When plants are exposed to water stress, Asr2
is detected in the phloem tissue, particularly in companion
phloem cells. When plants are exposed to water stress, Asr2
Asr gene family, which transcriptionally
regulate a sugar transporter gene, at least in grape. Using an
in situ RNA hybridization methodology, we determined
that, in basal conditions, expression of Asr2 in tomato leaves
is detected in the phloem tissue, particularly in companion
phloem cells. When plants are exposed to water stress, Asr2
is detected in the phloem tissue, particularly in companion
phloem cells. When plants are exposed to water stress, Asr2
Asr2 in tomato leaves
is detected in the phloem tissue, particularly in companion
phloem cells. When plants are exposed to water stress, Asr2Asr2
expression is contained in companion cells but expands
occasionally to mesophyll cells. In contrast, Asr1 transcript
localization seems to be sparse in leaf vascular tissue under
both non-stress and stress conditions. The occurrence of Asr
localization seems to be sparse in leaf vascular tissue under
both non-stress and stress conditions. The occurrence of Asr
Asr1 transcript
localization seems to be sparse in leaf vascular tissue under
both non-stress and stress conditions. The occurrence of AsrAsr
transcripts precisely in companion cells is in accordance
with the cell type specificity reported for hexose-transporter
protein molecules in grape encoded by the only Asr-target
gene known to date. The results are discussed in light of the
reported scarcity of plasmodesmata between companion
cells and the rest of leaf tissue in the family Solanaceae.
gene known to date. The results are discussed in light of the
reported scarcity of plasmodesmata between companion
cells and the rest of leaf tissue in the family Solanaceae.
Asr-target
gene known to date. The results are discussed in light of the
reported scarcity of plasmodesmata between companion
cells and the rest of leaf tissue in the family Solanaceae.