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Brassinosteroid confers tolerance in Arabidopsis thaliana and Brassica napus to a range of abiotic stresses

In addition to an essential role in plant development, brassinosteroids (BRs) appear to have the ability to protect plants against various environmental stresses. However, studies confirming the ability of BRs to modulate plant responses to different environmental stresses are lacking. Earlier we ha... Full description

Journal Title: Planta 2007-01-01, Vol.225 (2), p.353-364
Main Author: KAGALE, Sateesh
Other Authors: DIVI, Uday K , KROCHKO, Joan E , KELLER, Wilfred A , KRISHNA, Priti
Format: Electronic Article Electronic Article
Language: English
Subjects:
Publisher: Berlin: Springer-Verlag
ID: ISSN: 0032-0935
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recordid: cdi_proquest_miscellaneous_68376140
title: Brassinosteroid confers tolerance in Arabidopsis thaliana and Brassica napus to a range of abiotic stresses
format: Article
creator:
  • KAGALE, Sateesh
  • DIVI, Uday K
  • KROCHKO, Joan E
  • KELLER, Wilfred A
  • KRISHNA, Priti
subjects:
  • Adaptation to environment and cultivation conditions
  • Agronomy. Soil science and plant productions
  • Arabidopsis
  • Arabidopsis - drug effects
  • Arabidopsis - genetics
  • Arabidopsis - metabolism
  • Biological and medical sciences
  • Brassica napus - drug effects
  • Brassica napus - genetics
  • Brassica napus - metabolism
  • Brassinosteroids
  • Cholestanols - pharmacology
  • Cold Temperature
  • Complementary DNA
  • Dehydration
  • Drought
  • Environmental conditions
  • Fundamental and applied biological sciences. Psychology
  • Gene Expression Regulation, Plant
  • Genes
  • Genetics
  • Genetics and breeding of economic plants
  • Germination
  • Germination - drug effects
  • Heat-Shock Proteins - genetics
  • Heat-Shock Proteins - metabolism
  • Plant growth
  • Plant Growth Regulators - pharmacology
  • Plants
  • Seedlings
  • Seedlings - drug effects
  • Seedlings - growth & development
  • Seeds
  • Seeds - drug effects
  • Seeds - metabolism
  • Sodium Chloride - pharmacology
  • Steroids, Heterocyclic - pharmacology
  • Varietal selection. Specialized plant breeding, plant breeding aims
  • Water - metabolism
ispartof: Planta, 2007-01-01, Vol.225 (2), p.353-364
description: In addition to an essential role in plant development, brassinosteroids (BRs) appear to have the ability to protect plants against various environmental stresses. However, studies confirming the ability of BRs to modulate plant responses to different environmental stresses are lacking. Earlier we had demonstrated that treatment with 24-epibrassinolide (EBR), a BR, increases the basic thermotolerance of Brassica napus and tomato seedlings [Plant Mol Biol 40:333—342, 1999]. Here we demonstrate that EBR treatment enhances seedling tolerance to drought and cold stresses in both Arabidopsis thaliana and B. napus, and helps to overcome a salt-stress-induced inhibition of seed germination. The ability of EBR to confer tolerance in plants to a variety of stresses was confirmed through analysis of expression of a subset of drought and cold stress marker genes. Transcriptional changes in these genes were more apparent in EBR-treated A. thaliana, in particular during earlier time points of stress. To see if BR is essential for the heat stress (HS) response, we made use of BR-deficient mutants. Both det2-1 and dwf4 mutants still expressed heat shock proteins (hsps) to high levels during HS, indicating that although BR augments thermotolerance in plants, it is not necessary for hsp expression during HS.
language: eng
source:
identifier: ISSN: 0032-0935
fulltext: no_fulltext
issn:
  • 0032-0935
  • 1432-2048
url: Link


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titleBrassinosteroid confers tolerance in Arabidopsis thaliana and Brassica napus to a range of abiotic stresses
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descriptionIn addition to an essential role in plant development, brassinosteroids (BRs) appear to have the ability to protect plants against various environmental stresses. However, studies confirming the ability of BRs to modulate plant responses to different environmental stresses are lacking. Earlier we had demonstrated that treatment with 24-epibrassinolide (EBR), a BR, increases the basic thermotolerance of Brassica napus and tomato seedlings [Plant Mol Biol 40:333—342, 1999]. Here we demonstrate that EBR treatment enhances seedling tolerance to drought and cold stresses in both Arabidopsis thaliana and B. napus, and helps to overcome a salt-stress-induced inhibition of seed germination. The ability of EBR to confer tolerance in plants to a variety of stresses was confirmed through analysis of expression of a subset of drought and cold stress marker genes. Transcriptional changes in these genes were more apparent in EBR-treated A. thaliana, in particular during earlier time points of stress. To see if BR is essential for the heat stress (HS) response, we made use of BR-deficient mutants. Both det2-1 and dwf4 mutants still expressed heat shock proteins (hsps) to high levels during HS, indicating that although BR augments thermotolerance in plants, it is not necessary for hsp expression during HS.
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subjectAdaptation to environment and cultivation conditions ; Agronomy. Soil science and plant productions ; Arabidopsis ; Arabidopsis - drug effects ; Arabidopsis - genetics ; Arabidopsis - metabolism ; Biological and medical sciences ; Brassica napus - drug effects ; Brassica napus - genetics ; Brassica napus - metabolism ; Brassinosteroids ; Cholestanols - pharmacology ; Cold Temperature ; Complementary DNA ; Dehydration ; Drought ; Environmental conditions ; Fundamental and applied biological sciences. Psychology ; Gene Expression Regulation, Plant ; Genes ; Genetics ; Genetics and breeding of economic plants ; Germination ; Germination - drug effects ; Heat-Shock Proteins - genetics ; Heat-Shock Proteins - metabolism ; Plant growth ; Plant Growth Regulators - pharmacology ; Plants ; Seedlings ; Seedlings - drug effects ; Seedlings - growth & development ; Seeds ; Seeds - drug effects ; Seeds - metabolism ; Sodium Chloride - pharmacology ; Steroids, Heterocyclic - pharmacology ; Varietal selection. Specialized plant breeding, plant breeding aims ; Water - metabolism
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descriptionIn addition to an essential role in plant development, brassinosteroids (BRs) appear to have the ability to protect plants against various environmental stresses. However, studies confirming the ability of BRs to modulate plant responses to different environmental stresses are lacking. Earlier we had demonstrated that treatment with 24-epibrassinolide (EBR), a BR, increases the basic thermotolerance of Brassica napus and tomato seedlings [Plant Mol Biol 40:333—342, 1999]. Here we demonstrate that EBR treatment enhances seedling tolerance to drought and cold stresses in both Arabidopsis thaliana and B. napus, and helps to overcome a salt-stress-induced inhibition of seed germination. The ability of EBR to confer tolerance in plants to a variety of stresses was confirmed through analysis of expression of a subset of drought and cold stress marker genes. Transcriptional changes in these genes were more apparent in EBR-treated A. thaliana, in particular during earlier time points of stress. To see if BR is essential for the heat stress (HS) response, we made use of BR-deficient mutants. Both det2-1 and dwf4 mutants still expressed heat shock proteins (hsps) to high levels during HS, indicating that although BR augments thermotolerance in plants, it is not necessary for hsp expression during HS.
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1Agronomy. Soil science and plant productions
2Arabidopsis
3Arabidopsis - drug effects
4Arabidopsis - genetics
5Arabidopsis - metabolism
6Biological and medical sciences
7Brassica napus - drug effects
8Brassica napus - genetics
9Brassica napus - metabolism
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11Cholestanols - pharmacology
12Cold Temperature
13Complementary DNA
14Dehydration
15Drought
16Environmental conditions
17Fundamental and applied biological sciences. Psychology
18Gene Expression Regulation, Plant
19Genes
20Genetics
21Genetics and breeding of economic plants
22Germination
23Germination - drug effects
24Heat-Shock Proteins - genetics
25Heat-Shock Proteins - metabolism
26Plant growth
27Plant Growth Regulators - pharmacology
28Plants
29Seedlings
30Seedlings - drug effects
31Seedlings - growth & development
32Seeds
33Seeds - drug effects
34Seeds - metabolism
35Sodium Chloride - pharmacology
36Steroids, Heterocyclic - pharmacology
37Varietal selection. Specialized plant breeding, plant breeding aims
38Water - metabolism
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titleBrassinosteroid confers tolerance in Arabidopsis thaliana and Brassica napus to a range of abiotic stresses
authorKAGALE, Sateesh ; DIVI, Uday K ; KROCHKO, Joan E ; KELLER, Wilfred A ; KRISHNA, Priti
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2Arabidopsis
3Arabidopsis - drug effects
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15Drought
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18Gene Expression Regulation, Plant
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21Genetics and breeding of economic plants
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abstractIn addition to an essential role in plant development, brassinosteroids (BRs) appear to have the ability to protect plants against various environmental stresses. However, studies confirming the ability of BRs to modulate plant responses to different environmental stresses are lacking. Earlier we had demonstrated that treatment with 24-epibrassinolide (EBR), a BR, increases the basic thermotolerance of Brassica napus and tomato seedlings [Plant Mol Biol 40:333—342, 1999]. Here we demonstrate that EBR treatment enhances seedling tolerance to drought and cold stresses in both Arabidopsis thaliana and B. napus, and helps to overcome a salt-stress-induced inhibition of seed germination. The ability of EBR to confer tolerance in plants to a variety of stresses was confirmed through analysis of expression of a subset of drought and cold stress marker genes. Transcriptional changes in these genes were more apparent in EBR-treated A. thaliana, in particular during earlier time points of stress. To see if BR is essential for the heat stress (HS) response, we made use of BR-deficient mutants. Both det2-1 and dwf4 mutants still expressed heat shock proteins (hsps) to high levels during HS, indicating that although BR augments thermotolerance in plants, it is not necessary for hsp expression during HS.
copBerlin
pubSpringer-Verlag
pmid16906434
doi10.1007/s00425-006-0361-6