ASR1, a stress-induced tomato protein, protects yeast from osmotic stress
Asr1, a tomato gene induced by abiotic stress, belongs to a family, composed by at least three members, involved in adaptation to dry climates. To understand the mechanism by which proteins of this family seem to protect cells from water loss in plants, we expressed Asr1 in the heterologous expressi...
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Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00319317_v127_n1_p111_Moretti |
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paperaa:paper_00319317_v127_n1_p111_Moretti2023-06-12T16:45:25Z ASR1, a stress-induced tomato protein, protects yeast from osmotic stress Physiol. Plant. 2006;127(1):111-118 Moretti, M.B. Maskin, L. Gudesblat, G. García, S.C. Iusem, N.D. Biosynthesis Fruits Genes Glycerol Osmosis Yeast Endogenous glycerol Osmotic stress Tomato protein Proteins Tomatoes Lycopersicon esculentum Saccharomyces cerevisiae Asr1, a tomato gene induced by abiotic stress, belongs to a family, composed by at least three members, involved in adaptation to dry climates. To understand the mechanism by which proteins of this family seem to protect cells from water loss in plants, we expressed Asr1 in the heterologous expression system Saccharomyces cerevisiae under the control of a galactose-inducible promoter. In a mutant yeast strain deficient in one component of the stress-responsive high-osmolarity glycerol (HOG) pathway, namely the MAP kinase Hog1, the synthesis of ASR1 protein restores growth under osmotic stress conditions such as 0.5 M NaCl and 1.2 M sorbitol. In contrast, the rescuing of this phenotype was less evident using a wild-type strain or the upstream MAP kinase kinase (Pbs2)-deficient strain. In both knock-out strains impaired in glycerol synthesis because of a dysfunctional HOG pathway, but not in wild-type, ASR1 led to the accumulation of endogenous glycerol in an osmotic stress-independent and unrestrained manner. These data suggest that ASR1 complements yeast HOG-deficient phenotypes by inducing downstream components of the HOG pathway. The results are discussed in terms of the function of ASR proteins in planta at the molecular and cellular level. Copyright © Physiologia Plantarum 2006. Fil:Maskin, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Gudesblat, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Iusem, N.D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2006 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00319317_v127_n1_p111_Moretti |
institution |
Universidad de Buenos Aires |
institution_str |
I-28 |
repository_str |
R-134 |
collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
language |
Inglés |
orig_language_str_mv |
eng |
topic |
Biosynthesis Fruits Genes Glycerol Osmosis Yeast Endogenous glycerol Osmotic stress Tomato protein Proteins Tomatoes Lycopersicon esculentum Saccharomyces cerevisiae |
spellingShingle |
Biosynthesis Fruits Genes Glycerol Osmosis Yeast Endogenous glycerol Osmotic stress Tomato protein Proteins Tomatoes Lycopersicon esculentum Saccharomyces cerevisiae Moretti, M.B. Maskin, L. Gudesblat, G. García, S.C. Iusem, N.D. ASR1, a stress-induced tomato protein, protects yeast from osmotic stress |
topic_facet |
Biosynthesis Fruits Genes Glycerol Osmosis Yeast Endogenous glycerol Osmotic stress Tomato protein Proteins Tomatoes Lycopersicon esculentum Saccharomyces cerevisiae |
description |
Asr1, a tomato gene induced by abiotic stress, belongs to a family, composed by at least three members, involved in adaptation to dry climates. To understand the mechanism by which proteins of this family seem to protect cells from water loss in plants, we expressed Asr1 in the heterologous expression system Saccharomyces cerevisiae under the control of a galactose-inducible promoter. In a mutant yeast strain deficient in one component of the stress-responsive high-osmolarity glycerol (HOG) pathway, namely the MAP kinase Hog1, the synthesis of ASR1 protein restores growth under osmotic stress conditions such as 0.5 M NaCl and 1.2 M sorbitol. In contrast, the rescuing of this phenotype was less evident using a wild-type strain or the upstream MAP kinase kinase (Pbs2)-deficient strain. In both knock-out strains impaired in glycerol synthesis because of a dysfunctional HOG pathway, but not in wild-type, ASR1 led to the accumulation of endogenous glycerol in an osmotic stress-independent and unrestrained manner. These data suggest that ASR1 complements yeast HOG-deficient phenotypes by inducing downstream components of the HOG pathway. The results are discussed in terms of the function of ASR proteins in planta at the molecular and cellular level. Copyright © Physiologia Plantarum 2006. |
format |
Artículo Artículo publishedVersion |
author |
Moretti, M.B. Maskin, L. Gudesblat, G. García, S.C. Iusem, N.D. |
author_facet |
Moretti, M.B. Maskin, L. Gudesblat, G. García, S.C. Iusem, N.D. |
author_sort |
Moretti, M.B. |
title |
ASR1, a stress-induced tomato protein, protects yeast from osmotic stress |
title_short |
ASR1, a stress-induced tomato protein, protects yeast from osmotic stress |
title_full |
ASR1, a stress-induced tomato protein, protects yeast from osmotic stress |
title_fullStr |
ASR1, a stress-induced tomato protein, protects yeast from osmotic stress |
title_full_unstemmed |
ASR1, a stress-induced tomato protein, protects yeast from osmotic stress |
title_sort |
asr1, a stress-induced tomato protein, protects yeast from osmotic stress |
publishDate |
2006 |
url |
http://hdl.handle.net/20.500.12110/paper_00319317_v127_n1_p111_Moretti |
work_keys_str_mv |
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_version_ |
1769810280295956480 |