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231225s2019 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/erz307
|2 doi
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|a pubmed24n0996.xml
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|a (DE-627)NLM298807793
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|a (NLM)31267122
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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 |
1 |
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|a Li, Zhaoxia
|e verfasserin
|4 aut
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| 245 |
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|a The bHLH family member ZmPTF1 regulates drought tolerance in maize by promoting root development and abscisic acid synthesis
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|c 2019
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 10.08.2020
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|a Date Revised 10.01.2021
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|a published: Print
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|a Citation Status MEDLINE
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| 520 |
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|a © The Author(s) 2019. Published by Oxford University Press on behalf of the Society for Experimental Biology.
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|a Drought stress is the most important environmental stress limiting maize production. ZmPTF1, a phosphate starvation-induced basic helix-loop-helix (bHLH) transcription factor, contributes to root development and low-phosphate tolerance in maize. Here, ZmPTF1 expression, drought tolerance, and the underlying mechanisms were studied by using maize ZmPTF1 overexpression lines and mutants. ZmPTF1 was found to be a positive regulator of root development, ABA synthesis, signalling pathways, and drought tolerance. ZmPTF1 was also found to bind to the G-box element within the promoter of 9-cis-epoxycarotenoid dioxygenase (NCED), C-repeat-binding factor (CBF4), ATAF2/NAC081, NAC30, and other transcription factors, and to act as a positive regulator of the expression of those genes. The dramatically upregulated NCEDs led to increased abscisic acid (ABA) synthesis and activation of the ABA signalling pathway. The up-regulated transcription factors hierarchically regulate the expression of genes involved in root development, stress responses, and modifications of transcriptional regulation. The improved root system, increased ABA content, and activated ABA-, CBF4-, ATAF2-, and NAC30-mediated stress responses increased the drought tolerance of the ZmPTF1 overexpression lines, while the mutants showed opposite trends. This study describes a useful gene for transgenic breeding and helps us understand the role of a bHLH protein in plant root development and stress responses
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Abscisic acid synthesis
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|a ZmPTF1
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|a drought stress
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|a maize
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| 650 |
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|a root development
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| 650 |
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|a transcriptional regulation
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| 650 |
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|a Plant Proteins
|2 NLM
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| 650 |
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|a Transcription Factors
|2 NLM
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| 650 |
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|a transcription factor PTF1
|2 NLM
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| 650 |
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|a Abscisic Acid
|2 NLM
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| 650 |
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|a 72S9A8J5GW
|2 NLM
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| 700 |
1 |
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|a Liu, Can
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Ying
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Baomei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ran, Qijun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Juren
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 70(2019), 19 vom: 15. Okt., Seite 5471-5486
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
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|g volume:70
|g year:2019
|g number:19
|g day:15
|g month:10
|g pages:5471-5486
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| 856 |
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|u http://dx.doi.org/10.1093/jxb/erz307
|3 Volltext
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|d 70
|j 2019
|e 19
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|h 5471-5486
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