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231223s2010 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2010.02.002
|2 doi
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|a pubmed24n0652.xml
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|a (DE-627)NLM195576500
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|a (NLM)20206537
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Alcázar, Rubén
|e verfasserin
|4 aut
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| 245 |
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|a Putrescine accumulation confers drought tolerance in transgenic Arabidopsis plants over-expressing the homologous Arginine decarboxylase 2 gene
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|c 2010
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 04.02.2011
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a 2010 Elsevier Masson SAS. All rights reserved.
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|a In Arabidopsis, a model genus missing a functional ornithine decarboxylase pathway, most of the key genes involved in polyamine biosynthesis are duplicated. This gene redundancy has been related to the involvement of certain gene isoforms in the response to specific environmental stimuli. We have previously shown that drought stress induces Arginine decarboxlase 2 expression, while transcript levels for Arginine decarboxlase 1 remain constant. Accumulation of putrescine and increased arginine decarboxlase activity (EC 4.1.1.19) levels in response to different abiotic stresses have been reported in many different plant systems, but the biological meaning of this increase remains unclear. To get a new insight into these questions, we have studied the response to drought of transgenic Arabidopsis thaliana lines constitutively expressing the homologous Arginine decarboxlase 2 gene. These lines contain high levels of putrescine with no changes in spermidine and spermine content even under drought stress. Drought tolerance experiments indicate that the different degree of resistance to dehydration correlates with Put content. Although no significant differences were observed in the number of stomata between wild-type and transgenic plants, a reduction in transpiration rate and stomata conductance was observed in the ADC2 over-expressor lines. These results indicate that one of the mechanisms involved in the drought tolerance of transgenic plants over-producing Put is related to a reduction of water loss by transpiration
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Arabidopsis Proteins
|2 NLM
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|a Spermine
|2 NLM
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|a 2FZ7Y3VOQX
|2 NLM
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|a Carboxy-Lyases
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|a EC 4.1.1.-
|2 NLM
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|a arginine decarboxylase
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|a EC 4.1.1.19
|2 NLM
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|a Spermidine
|2 NLM
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| 650 |
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|a U87FK77H25
|2 NLM
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| 650 |
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|a Putrescine
|2 NLM
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| 650 |
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|a V10TVZ52E4
|2 NLM
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| 700 |
1 |
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|a Planas, Joan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Saxena, Triambak
|e verfasserin
|4 aut
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| 700 |
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|a Zarza, Xavier
|e verfasserin
|4 aut
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|a Bortolotti, Cristina
|e verfasserin
|4 aut
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| 700 |
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|a Cuevas, Juan
|e verfasserin
|4 aut
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|a Bitrián, Marta
|e verfasserin
|4 aut
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|a Tiburcio, Antonio F
|e verfasserin
|4 aut
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| 700 |
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|a Altabella, Teresa
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant physiology and biochemistry : PPB
|d 1991
|g 48(2010), 7 vom: 01. Juli, Seite 547-52
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnns
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| 773 |
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|g volume:48
|g year:2010
|g number:7
|g day:01
|g month:07
|g pages:547-52
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|u http://dx.doi.org/10.1016/j.plaphy.2010.02.002
|3 Volltext
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