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ARABIDOPSIS NITRATE REGULATED 1 acts as a negative modulator of seed germination by activating ABI3 expression.

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Title: ARABIDOPSIS NITRATE REGULATED 1 acts as a negative modulator of seed germination by activating ABI3 expression.
Authors: Lin, Jia‐Hui1 (AUTHOR), Yu, Lin‐Hui1 (AUTHOR) yulh@ustc.edu.cn, Xiang, Cheng‐Bin1 (AUTHOR) xiangcb@ustc.edu.cn
Source: New Phytologist. Jan2020, Vol. 225 Issue 2, p835-847. 13p. 9 Graphs.
Subjects: Germination, Osmotic pressure, Abscisic acid, Arabidopsis, Transcription factors, Abiotic stress, Nitrates, Plant hormones
Abstract: Summary: Seed germination is a crucial transition point in plant life and is tightly regulated by environmental conditions through the coordination of two phytohormones, gibberellin and abscisic acid (ABA). To avoid unfavorable conditions, plants have evolved safeguard mechanisms for seed germination.The present contribution reports a novel function of the Arabidopsis MCM1/AGAMOUS/DEFICIENS/SRF(MADS)‐box transcription factor ARABIDOPSIS NITRATE REGULATED 1 (ANR1) in seed germination.ANR1 knockout mutant is insensitive to ABA, salt and osmotic stress during the seed germination and early seedling development stages, whereas ANR1‐overexpressing lines are hypersensitive. ANR1 is responsive to ABA and abiotic stresses and upregulates the expression of ABA Intolerant (ABI)3 to suppress seed germination. ANR1 and ABI3 have similar expression pattern during seed germination. Genetically, ABI3 acts downstream of ANR1. Chromatin immunoprecipitation and yeast‐one‐hybrid assays showed that ANR1 could bind to the ABI3 promoter to regulate its expression. In addition, ANR1 acts synergistically with AGL21 to suppress seed germination in response to ABA as evidenced by anr1 agl21 double mutant.Taken together, the results herein demonstrate that the ANR1 plays an important role in regulating seed germination and early postgermination growth. ANR1 and AGL21 together constitutes a safeguard mechanism for seed germination to avoid unfavorable conditions. [ABSTRACT FROM AUTHOR]
Copyright of New Phytologist is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 141076668
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: ARABIDOPSIS NITRATE REGULATED 1 acts as a negative modulator of seed germination by activating ABI3 expression.
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  Data: <searchLink fieldCode="AR" term="%22Lin%2C+Jia‐Hui%22">Lin, Jia‐Hui</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yu%2C+Lin‐Hui%22">Yu, Lin‐Hui</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> yulh@ustc.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Xiang%2C+Cheng‐Bin%22">Xiang, Cheng‐Bin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> xiangcb@ustc.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22New+Phytologist%22">New Phytologist</searchLink>. Jan2020, Vol. 225 Issue 2, p835-847. 13p. 9 Graphs.
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  Data: <searchLink fieldCode="DE" term="%22Germination%22">Germination</searchLink><br /><searchLink fieldCode="DE" term="%22Osmotic+pressure%22">Osmotic pressure</searchLink><br /><searchLink fieldCode="DE" term="%22Abscisic+acid%22">Abscisic acid</searchLink><br /><searchLink fieldCode="DE" term="%22Arabidopsis%22">Arabidopsis</searchLink><br /><searchLink fieldCode="DE" term="%22Transcription+factors%22">Transcription factors</searchLink><br /><searchLink fieldCode="DE" term="%22Abiotic+stress%22">Abiotic stress</searchLink><br /><searchLink fieldCode="DE" term="%22Nitrates%22">Nitrates</searchLink><br /><searchLink fieldCode="DE" term="%22Plant+hormones%22">Plant hormones</searchLink>
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  Label: Abstract
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  Data: Summary: Seed germination is a crucial transition point in plant life and is tightly regulated by environmental conditions through the coordination of two phytohormones, gibberellin and abscisic acid (ABA). To avoid unfavorable conditions, plants have evolved safeguard mechanisms for seed germination.The present contribution reports a novel function of the Arabidopsis MCM1/AGAMOUS/DEFICIENS/SRF(MADS)‐box transcription factor ARABIDOPSIS NITRATE REGULATED 1 (ANR1) in seed germination.ANR1 knockout mutant is insensitive to ABA, salt and osmotic stress during the seed germination and early seedling development stages, whereas ANR1‐overexpressing lines are hypersensitive. ANR1 is responsive to ABA and abiotic stresses and upregulates the expression of ABA Intolerant (ABI)3 to suppress seed germination. ANR1 and ABI3 have similar expression pattern during seed germination. Genetically, ABI3 acts downstream of ANR1. Chromatin immunoprecipitation and yeast‐one‐hybrid assays showed that ANR1 could bind to the ABI3 promoter to regulate its expression. In addition, ANR1 acts synergistically with AGL21 to suppress seed germination in response to ABA as evidenced by anr1 agl21 double mutant.Taken together, the results herein demonstrate that the ANR1 plays an important role in regulating seed germination and early postgermination growth. ANR1 and AGL21 together constitutes a safeguard mechanism for seed germination to avoid unfavorable conditions. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of New Phytologist is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1111/nph.16172
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      – Code: eng
        Text: English
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        PageCount: 13
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    Subjects:
      – SubjectFull: Germination
        Type: general
      – SubjectFull: Osmotic pressure
        Type: general
      – SubjectFull: Abscisic acid
        Type: general
      – SubjectFull: Arabidopsis
        Type: general
      – SubjectFull: Transcription factors
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      – SubjectFull: Abiotic stress
        Type: general
      – SubjectFull: Nitrates
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      – SubjectFull: Plant hormones
        Type: general
    Titles:
      – TitleFull: ARABIDOPSIS NITRATE REGULATED 1 acts as a negative modulator of seed germination by activating ABI3 expression.
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          Name:
            NameFull: Lin, Jia‐Hui
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            NameFull: Yu, Lin‐Hui
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            NameFull: Xiang, Cheng‐Bin
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              M: 01
              Text: Jan2020
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              Y: 2020
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