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231223s2011 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/erq252
|2 doi
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|a pubmed24n1337.xml
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|a (NLM)20713465
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|a DE-627
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|c DE-627
|e rakwb
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|a eng
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|a Ré, Delfina A
|e verfasserin
|4 aut
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|a Nicotiana attenuata NaHD20 plays a role in leaf ABA accumulation during water stress, benzylacetone emission from flowers, and the timing of bolting and flower transitions
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|c 2011
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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 14.03.2011
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|a Date Revised 20.03.2024
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|a published: Print-Electronic
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|a ErratumIn: J Exp Bot. 2011 Mar;62(6):2229
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|a Citation Status MEDLINE
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|a Homeodomain-leucine zipper type I (HD-Zip I) proteins are plant-specific transcription factors associated with the regulation of growth and development in response to changes in the environment. Nicotiana attenuata NaHD20 was identified as an HD-Zip I-coding gene whose expression was induced by multiple stress-associated stimuli including drought and wounding. To study the role of NaHD20 in the integration of stress responses with changes in growth and development, its expression was silenced by virus-induced gene silencing (VIGS), and control and silenced plants were metabolically and developmentally characterized. Phytohormone profiling showed that NaHD20 plays a positive role in abscisic acid (ABA) accumulation in leaves during water stress and in the expression of some dehydration-responsive genes including ABA biosynthetic genes. Moreover, consistent with the high levels of NaHD20 expression in corollas, the emission of benzylacetone from flowers was reduced in NaHD20-silenced plants. Additionally, bolting time and the opening of the inflorescence buds was decelerated in these plants in a specific developmental stage without affecting the total number of flowers produced. Water stress potentiated these effects; however, after plants recovered from this condition, the opening of the inflorescence buds was accelerated in NaHD20-silenced plants. In summary, NaHD20 plays multiple roles in N. attenuata and among these are the coordination of responses to dehydration and its integration with changes in flower transitions
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Basic-Leucine Zipper Transcription Factors
|2 NLM
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|a Plant Proteins
|2 NLM
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|a Water
|2 NLM
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|a 059QF0KO0R
|2 NLM
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|a Abscisic Acid
|2 NLM
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|2 NLM
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|a Dezar, Carlos A
|e verfasserin
|4 aut
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|a Chan, Raquel L
|e verfasserin
|4 aut
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| 700 |
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|a Baldwin, Ian T
|e verfasserin
|4 aut
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|a Bonaventure, Gustavo
|e verfasserin
|4 aut
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 62(2011), 1 vom: 01. Jan., Seite 155-66
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
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|g volume:62
|g year:2011
|g number:1
|g day:01
|g month:01
|g pages:155-66
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|u http://dx.doi.org/10.1093/jxb/erq252
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