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Integration of shoot-derived polypeptide signals by root TGA transcription factors is essential for survival under fluctuating nitrogen environments

ABSTRACT: Integration of shoot-derived polypeptide signals by root TGA transcription factors is essential for survival under fluctuating nitrogen environments

PROVIDER: PRJNA1005175 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR25607862.fastq.gz	Fastqsanger.gz
	SRR25607863.fastq.gz	Fastqsanger.gz
	SRR25607864.fastq.gz	Fastqsanger.gz
	SRR25607865.fastq.gz	Fastqsanger.gz
	SRR25607866.fastq.gz	Fastqsanger.gz

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Integration of shoot-derived polypeptide signals by root TGA transcription factors is essential for survival under fluctuating nitrogen environments [RNA-seq]

Project description:Unlike plants in the field, which experience significant temporal fluctuations in environmental conditions, plants in the laboratory are typically grown in controlled, stable environments. Therefore, signaling pathways evolved for survival in continuously fluctuating environments often remain functionally latent in laboratory settings. Here, we show that TGA1 and TGA4 act as hub transcription factors through which the expression of genes involved in high-affinity nitrate uptake are regulated in response to shoot-derived phloem mobile polypeptides, CEP DOWNSTREAM 1 (CEPD1), CEPD2 and CEPD-like 2 (CEPDL2) as nitrogen (N) deficiency signals, and Glutaredoxin S1 (GrxS1) to GrxS8 as N sufficiency signals. CEPD1/2/CEPDL2 and GrxS1-S8 competitively bind to TGA1/4 in roots, with the former acting as transcription coactivators that enhance the uptake of nitrate, while the latter function as corepressor complexes together with TOPLESS (TPL), TPL-related 1 (TPR1) and TPR4 to limit nitrate uptake. Arabidopsis plants deficient in TGA1/4 maintain basal nitrate uptake and exhibit growth similar to wild-type plants in a stable N environment, but were impaired in regulation of nitrate acquisition in response to shoot N demand, leading to defective growth under continuously fluctuating N environments where rhizosphere nitrate ions switch periodically between deficient and sufficient states. TGA1/4 are crucial transcription factors that enable plants to survive under fluctuating and challenging N environmental conditions.

2024-07-11 | GSE240736 | GEO

Integration of shoot-derived polypeptide signals by root TGA transcription factors is essential for survival under fluctuating nitrogen environments [ChIP-seq]

2024-07-11 | GSE240737 | GEO

Integration of shoot-derived polypeptide signals by root TGA transcription factors is essential for survival under fluctuating nitrogen environments

2024-07-11 | PXD044498 | JPOST Repository

Integration of shoot-derived polypeptide signals by root TGA transcription factors is essential for survival under fluctuating nitrogen environments.

Project description: Not available

| S-EPMC11344143 | biostudies-literature

Integration of shoot-derived polypeptide signals by root TGA transcription factors is essential for survival under fluctuating nitrogen environments

Project description:This SuperSeries is composed of the SubSeries listed below.

2024-07-11 | GSE240738 | GEO

Shoot-to-root mobile CEPD-like 2 integrates shoot nitrogen status to systemically regulate nitrate uptake in Arabidopsis

Project description:Plants modulate the efficiency of root nitrogen (N) acquisition in response to shoot N demand. However, molecular components directly involved in this shoot-to-root communication remain to be identified. Here, we show that phloem-mobile CEPD-like 2 (CEPDL2) polypeptide is upregulated in the leaf vasculature in response to decreased shoot N status and, after translocation to the roots, promotes high-affinity uptake and root-to-shoot transport of nitrate by activating nitrate transporter genes such as NRT2.1, NRT3.1 and NRT1.5. Loss of CEPDL2 decreases nitrate uptake and root-to-shoot transport activity in roots, leading to a reduction in shoot nitrate content and plant biomass. CEPDL2 contributes to N acquisition cooperatively with CEPD1 and CEPD2 that mediate root N status, and their complete loss severely impairs N homeostasis in plants. Reciprocal grafting analysis provided conclusive evidence that the shoot CEPDL2/CEPD genotype defines the root high-affinity uptake activity of nitrate. Our results indicate that plants integrate shoot N status and root N status in leaves and systemically regulate the efficiency of root N acquisition.

2020-02-10 | GSE140834 | GEO

The miRNAs and their targets in cucumber shoot apexes in response to temperature and photoperiod environments

Project description:The cucumber is one of the most important vegetables worldwide and is used as a research model for study of phloem transport, sex determination and temperature-photoperiod physiology. The shoot apex is the most important plant tissue in which the cell fate and organ meristems have been determined. In this study, a series of whole-genome small RNA, degradome and transcriptome analyses were performed on cucumber shoot apical tissues treated with high vs. low temperature and a long vs. short photoperiod.

2018-07-31 | GSE117867 | GEO

Gene expression profile of rice shoot in response to nitrogen deficiency condition

Project description:Nitrogen (N) are pivotal element for proper plant growth and development. We performed microarray analysis of rice shoot under nitrogen deficiency (-N) to obtain a global view of gene regulations associated with plant response to -N.

2019-10-06 | GSE73772 | GEO

Nannochloropsis oceanica and CO2 fluctuating environment

Project description:Nannochloropsis oceanica and CO2 fluctuating environment

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Control of root thermomorphogenesis by systemic and local regulatory signals (18h RNA-seq)

Project description:Temperature is one of the most impactful environmental factors in response to which plants adjust their growth and development. While the regulation of temperature signaling has been extensively investigated for the aerial part of plants, much less is known and understood about how roots sense and modulate their growth in response to fluctuating temperatures. Here we found that shoot and root growth responses to high ambient temperature are negatively correlated during early seedling development. A shoot signaling module that includes HY5, the phytochromes and the PIFs exerts a central function in coupling these responses and triggers long-distance signaling to control root growth and auxin levels in the root. In addition to the HY5/PIF dependent shoot module, a local regulatory axis composed of auxin biosynthesis and auxin perception factors mediates root responses to high ambient temperature. Together, our findings uncover that roots integrate long-distance signals with local hormonal inputs during thermomorphogenesis.

2020-11-04 | GSE138132 | GEO

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