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Difference between day and night temperatures affects stem elongation in tomato (Solanum lycopersicum) seedlings via regulation of gibberellin and auxin synthesis

ABSTRACT: Difference between day and night temperatures affects stem elongation in tomato (Solanum lycopersicum) seedlings via regulation of gibberellin and auxin synthesis

PROVIDER: PRJNA543851 | ENA |

REPOSITORIES: ENA

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Difference between day and night temperatures affects stem elongation in tomato (Solanum lycopersicum) seedlings via regulation of gibberellin and auxin synthesis

Project description:Temperature is a critical environmental factor governing plant growth and development. The difference between day temperature (DT) and night temperature (NT), abbreviated as DIF, influences plant architecture. Subjecting plants to artificial DIF treatments is an effective strategy in ornamental horticulture. For example, negative DIF (when DT – NT < 0) generally inhibits stem elongation, resulting in dwarf plants. However, the mechanisms underlying stem growth regulation by DIF remains to be completely elucidated. In this study, we aimed to analyze the growth, transcriptome, and phytohormone profiles of tomato (Solanum lycopersicum) seedlings grown under different DIF treatments. Under positive DIF (when DT – NT > 0), in contrast to the control temperature (25°C/20°C, DT/NT), high temperature (30°C/25°C) increased stem length and thickness, as well as the number of xylem vessels. Conversely, compared with the positive high temperature DIF treatment (30°C/25°C), under negative DIF treatment (25°C/30°C) stem elongation was inhibited, but stem thickness and the number of xylem vessels were not affected. The negative DIF treatment decreased the expression of gibberellin (GA)-, auxin-, and cell wall-related genes in the epicotyl, as well as the concentrations of GAs and indole-3-acetic acid (IAA). The expression of these genes and concentrations of these hormones increased under high temperature compared to those under the control temperature positive DIF. Our results suggest that stem length in tomato seedlings is controlled by changes in GA and IAA biosynthesis in response to varying day and night temperatures.

2020-11-18 | GSE131496 | GEO

Difference Between Day and Night Temperatures Affects Stem Elongation in Tomato (<i>Solanum lycopersicum</i>) Seedlings via Regulation of Gibberellin and Auxin Synthesis.

Project description:Temperature is a critical environmental factor governing plant growth and development. The difference between day temperature (DT) and night temperature (NT), abbreviated as DIF, influences plant architecture. Subjecting plants to artificial DIF treatments is an effective strategy in ornamental horticulture. For example, negative DIF (when DT - NT < 0) generally inhibits stem elongation, resulting in dwarf plants. However, the mechanisms underlying stem growth regulation by DIF remains to be completely elucidated. In this study, we aimed to analyze the growth, transcriptome, and phytohormone profiles of tomato (Solanum lycopersicum) seedlings grown under different DIF treatments. Under positive DIF (when DT - NT > 0), in contrast to the control temperature (25°C/20°C, DT/NT), high temperature (30°C/25°C) increased stem length and thickness, as well as the number of xylem vessels. Conversely, compared with the positive high temperature DIF treatment (30°C/25°C), under negative DIF treatment (25°C/30°C) stem elongation was inhibited, but stem thickness and the number of xylem vessels were not affected. The negative DIF treatment decreased the expression of gibberellin (GA)-, auxin-, and cell wall-related genes in the epicotyl, as well as the concentrations of GAs and indole-3-acetic acid (IAA). The expression of these genes and concentrations of these hormones increased under high temperature compared to those under the control temperature positive DIF. Our results suggest that stem length in tomato seedlings is controlled by changes in GA and IAA biosynthesis in response to varying day and night temperatures.

| S-EPMC7752778 | biostudies-literature

Auxin coreceptor IAA17/AXR3 controls cell elongation in Arabidopsis thaliana root by modulation of auxin and gibberellin perception

Project description:Proper functioning of the nuclear auxin pathway is essential for regulating plant growth and development by maintaining auxin homeostasis. To understand better physiological mechanisms involved in auxin signaling pathways we investigated the localization and effect of accumulation of auxin coreceptor IAA17/AXR3 in root. We demonstrate that the accumulation of stable nuclear AXR3-1 protein interferes with auxin homeostasis, causing auxin insensitivity and increased rapid root cell elongation followed by detained growth. This growth pattern is associated with changes in phytohormone gene expression. Data from transcriptomic screen combined with reporter lines and mutant studies declare essential role of auxin homeostasis in maintaining optimal root growth rate and development. We proposed a model in which rapid cell elongation is caused by combination of AXR3-1-dependent auxin insensitivity associated with unblocked gibberellin effect on root. This study demonstrate that plants coordinate gibberellin homeostasis by the auxin signaling pathway, contributing to avoid excessive root elongation.

2023-04-01 | GSE227820 | GEO

Transcript profiling of six rice cultivars with different tolerance level under high night temperatures

Project description:Regulation of transcript expression in different tolerance classes of rice cultivars in response to high night temperatures (HNT) is investigated. The aim was to identify marker genes which are responsible for HNT tolerance. Addiditionally gene expression data are combined with GC-MS data analysis (primary metabolites) to identify global changes in response to HNT.

2016-12-01 | GSE55341 | GEO

Auxin coreceptor IAA17/AXR3 controls cell elongation in Arabidopsis thaliana root by modulation of auxin and gibberellin perception

Project description:Auxin coreceptor IAA17/AXR3 controls cell elongation in Arabidopsis thaliana root by modulation of auxin and gibberellin perception

| PRJNA947140 | ENA

Arabidopsis thaliana: auxin-treated seedlings versus control seedlings

2012-05-10 | GSE37899 | GEO

Arabidopsis thaliana: auxin-treated seedlings versus control seedlings

Project description:Transcriptional profiling of Arabidopsis thaliana seedlings treated with auxin (indole-3-acetic acid), highlighting to the physiological function of auxin by observing early response of gene expressions in Arabidopsis seedlings. Two-condition experiment, auxin-treated seedlings vs. control seedlings. Biological replicates:2 control replicates, 2 auxin-treated.

2012-05-09 | E-GEOD-37899 | biostudies-arrayexpress

Auxin effects on seedlings

Project description:Five-day old light-grown Arabidopsis seedlings were immersed 10 µM indole-3-acetic acid (auxin) or water Keywords: repeat sample

2004-07-31 | GSE863 | GEO

Transcriptional responses analysis of the inflorescence meristems in Jatropha curcas following gibberellin treatment

Project description:Our results showed that 951 differentially expressed genes (DEGs) were obtained to response to gibberellin treatment. The 6-h time point was an important phase in the response to exogenous gibberellin. Furthermore, the plant endogenous gibberellin, auxin, ethylene, abscisic acid, and brassinolide signaling transduction pathways were repressed after exogenous GA3 treatment. However, the DEGs (JcAHP1, JcHK3, and JcMYC2, JcMYC4) which were respectively associated with cytokinin and jasmonic acid signaling were up-regulation for 24-h time point following GA3 treatment. In addition, the floral meristem determinacy genes (JcLFY and JcSOC1) and floral organ identity genes (JcAP3, JcPI, and JcSEP1-3) were significantly up-regulated, but their negative factor (JcSVP) was down-regulated after GA3 treatment.

2021-12-31 | GSE107561 | GEO

Early gibberellin responses in Arabidopsis

Project description:The aim is to identify early gibberellin responsive genes in a gibberellin deficient strain such as ga1-3. Such genes are likely regulated by DELLA proteins which are master gibberellin repressors. DELLA proteins are rapidly degraded after gibberellin treatment, but their direct target genes still need to be elucidated. Keywords: hormone response, gibberellin treatment

2007-11-21 | GSE8739 | GEO

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