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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/eraa128
|2 doi
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|a pubmed24n1024.xml
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|a (DE-627)NLM307455769
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|a (NLM)32157303
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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 Yang, Tao
|e verfasserin
|4 aut
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|a AtHSPR is involved in GA- and light intensity-mediated control of flowering time and seed set in Arabidopsis
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|c 2020
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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
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|2 rdacarrier
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|a Date Completed 14.05.2021
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|a Date Revised 31.05.2022
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|a published: Print
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|a Citation Status MEDLINE
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|a © The Author(s) 2020. Published by Oxford University Press on behalf of the Society for Experimental Biology. All rights reserved. For permissions, please email: journals.permissionsoup.com.
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|a Flowering is a dynamic and synchronized process, the timing of which is finely tuned by various environmental signals. A T-DNA insertion mutant in Arabidopsis HEAT SHOCK PROTEIN-RELATED (AtHSPR) exhibited late-flowering phenotypes under both long-day (LD) and short-day (SD) conditions compared to the wild-type, while over-expression of AtHSPR promoted flowering. Exogenous application of gibberellin (GA) partially rescued the late-flowering mutant phenotype under both LD and SD conditions, suggesting that AtHSPR is involved in GA biosynthesis and/or the GA signaling that promotes flowering. Under SD or low-light conditions, the Athspr mutant exhibited late flowering together with reduced pollen viability and seed set, defective phenotypes that were partially rescued by GA treatment. qRT-PCR assays confirmed that GA biosynthetic genes were down-regulated, that GA catabolic genes were up-regulated, and that the levels of bioactive GA and its intermediates were decreased in Athspr under both SD and low-light/LD, further suggesting that AtHSPR could be involved in the GA pathway under SD and low-light conditions. Furthermore, AtHSPR interacted in vitro with OFP1 and KNAT5, which are transcriptional repressors of GA20ox1 in GA biosynthesis. Taken together, our findings demonstrate that AtHSPR plays a positive role in GA- and light intensity-mediated regulation of flowering and seed set
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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 thaliana
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|a AtHSPR
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|a flowering time
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|a gibberellin
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|a light intensity
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|a seed set
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|a Arabidopsis Proteins
|2 NLM
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|a Gibberellins
|2 NLM
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|a Heat-Shock Proteins
|2 NLM
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| 650 |
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|a Homeodomain Proteins
|2 NLM
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| 650 |
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|a KNAT5 protein, Arabidopsis
|2 NLM
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| 650 |
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|a Transcription Factors
|2 NLM
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|a Sun, Yan
|e verfasserin
|4 aut
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|a Wang, Yongli
|e verfasserin
|4 aut
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|a Zhou, Lina
|e verfasserin
|4 aut
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|a Chen, Mengya
|e verfasserin
|4 aut
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| 700 |
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|a Bian, Zhiyuan
|e verfasserin
|4 aut
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| 700 |
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|a Lian, Yuke
|e verfasserin
|4 aut
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| 700 |
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|a Xuan, Lijuan
|e verfasserin
|4 aut
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|a Yuan, Guoqiang
|e verfasserin
|4 aut
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| 700 |
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|a Wang, Xinyu
|e verfasserin
|4 aut
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| 700 |
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|a Wang, Chongying
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 71(2020), 12 vom: 22. Juni, Seite 3543-3559
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
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|g volume:71
|g year:2020
|g number:12
|g day:22
|g month:06
|g pages:3543-3559
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|u http://dx.doi.org/10.1093/jxb/eraa128
|3 Volltext
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