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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1111/nph.18992
|2 doi
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|a pubmed24n1190.xml
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|a (DE-627)NLM357223160
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|a (NLM)37219878
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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 Sala, Jan
|e verfasserin
|4 aut
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| 245 |
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|a Arabidopsis thaliana B-GATA factors repress starch synthesis and gravitropic growth responses
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|c 2023
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| 336 |
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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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| 500 |
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|a Date Completed 30.06.2023
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|a Date Revised 02.07.2023
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2023 The Authors. New Phytologist © 2023 New Phytologist Foundation.
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|a Plants perceive the direction of gravity during skotomorphogenic growth, and of gravity and light during photomorphogenic growth. Gravity perception occurs through the sedimentation of starch granules in shoot endodermal and root columella cells. In this study, we demonstrate that the Arabidopsis thaliana GATA factors GNC (GATA, NITRATE-INDUCIBLE, CARBON METABOLISM-INVOLVED) and GNL/CGA1 (GNC-LIKE/CYTOKININ-RESPONSIVE GATA1) repress starch granule growth and amyloplast differentiation in endodermal cells. In our comprehensive study, we analysed gravitropic responses in the shoot, root and hypocotyl. We performed an RNA-seq analysis, used advanced microscopy techniques to examine starch granule size, number and morphology and quantified transitory starch degradation patterns. Using transmission electron microscopy, we examined amyloplast development. Our results indicate that the altered gravitropic responses in hypocotyls, shoots and roots of gnc gnl mutants and GNL overexpressors are due to the differential accumulation of starch granules observed in the GATA genotypes. At the whole-plant level, GNC and GNL play a more complex role in starch synthesis, degradation and starch granule initiation. Our findings suggest that the light-regulated GNC and GNL help balance phototropic and gravitropic growth responses after the transition from skotomorphogenesis to photomorphogenesis by repressing the growth of starch granules
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a GATA factor
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|a amyloplast
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|a gravitropism response
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|a starch
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|a starch granule
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| 650 |
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|a GATA Transcription Factors
|2 NLM
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|a Arabidopsis Proteins
|2 NLM
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| 650 |
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|a Cytokinins
|2 NLM
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| 650 |
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|a Starch
|2 NLM
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| 650 |
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|a 9005-25-8
|2 NLM
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| 650 |
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|a GNC protein, Arabidopsis
|2 NLM
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| 650 |
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7 |
|a Transcription Factors
|2 NLM
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| 700 |
1 |
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|a Mosesso, Niccolò
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Isono, Erika
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Schwechheimer, Claus
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 239(2023), 3 vom: 01. Aug., Seite 979-991
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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| 773 |
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|g volume:239
|g year:2023
|g number:3
|g day:01
|g month:08
|g pages:979-991
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|u http://dx.doi.org/10.1111/nph.18992
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