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Penfield: Understanding the affect of maternal environment on seed dormancy

ABSTRACT: Maternal environment is an important regultor of seed dormancy, but the mechanisms underlying the process are poorly understood. We have found that genes in the circadian clock control dormancy, in part through their regulation of the canonical photoperiod pathway known from research into flowering time control. In this experiment we compare the affects of altering seed maturation temperature or maternal photoperiod on dry seed transcriptomes, and the photoperiod-insenstive ft-1 mutant to wt type Ler. In this way we are identifying gene expression programmes which result from the seed's response to maternal environmental experience. Keywords: Expression profilling by array

ORGANISM(S): Arabidopsis thaliana

PROVIDER: GSE28747 | GEO | 2011/04/21

SECONDARY ACCESSION(S): PRJNA140525

REPOSITORIES: GEO

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Penfield: Understanding the affect of maternal environment on seed dormancy

Project description:Maternal environment is an important regultor of seed dormancy, but the mechanisms underlying the process are poorly understood. We have found that genes in the circadian clock control dormancy, in part through their regulation of the canonical photoperiod pathway known from research into flowering time control. In this experiment we compare the affects of altering seed maturation temperature or maternal photoperiod on dry seed transcriptomes, and the photoperiod-insenstive ft-1 mutant to wt type Ler. In this way we are identifying gene expression programmes which result from the seed's response to maternal environmental experience. Keywords: Expression profilling by array 12 samples were used in this experiment

2011-04-21 | E-GEOD-28747 | biostudies-arrayexpress

RNA-Seq of Arabidopsis thaliana developing siliques and seeds with temperature shifts

Project description:We investigated RNA involved in the maternal control of progeny seed dormancy. Basically, we grew Ler wild type plants at 22 and 16 degree Celsius before fertilization which were moved to 22 degree for seed maturation along with ft-1 plants at 22 degree through lifetime (which show decreased seed germinability). Various RNA fractions were prepared from developing siluqes (seeds removed) and seeds, and sequenced to identify genes involved in transducing maternal memory of temperature to progeny seeds.

2014-11-20 | E-MTAB-2869 | biostudies-arrayexpress

A VEL3 histone deacetylase complex establishes a maternal epigenetic state controlling progeny seed dormancy

Project description:Mother plants play an important role in the control of dormancy and dispersal characters of their progeny. In Arabidopsis seed dormancy is imposed by the embryo-surrounding tissues of the endosperm and seed coat. Here we show that VERNALIZATION5/VIN3-LIKE 3 (VEL3) maintains maternal control over progeny seed dormancy by establishing an epigenetic state in the central cell that primes the depth of primary seed dormancy later established during seed maturation. VEL3 colocalizes with MSI1 in the nucleolus and associates with a histone deacetylase complex. Furthermore, VEL3 preferentially associates with pericentromeric chromatin and is required for deacetylation and H3K27me3 deposition established in the central cell. The epigenetic state established by maternal VEL3 is retained in mature seeds, and controls seed dormancy in part through repression of programmed cell death-associated gene ORE1. Our data demonstrates a novel mechanism by which maternal control of progeny seed physiology persists post-shedding, maintaining parental control of seed behaviour.

2023-03-24 | PXD041094 | Pride

A VEL3 histone deacetylase complex establishes a maternal epigenetic state controlling progeny seed dormancy

Project description:Mother plants play an important role in the control of dormancy and dispersal characters of their progeny. In Arabidopsis seed dormancy is imposed by the embryo-surrounding tissues of the endosperm and seed coat. Here we show that the VERNALIZATION5/VIN3-LIKE 3 (VEL3) gene maintains maternal control over progeny seed dormancy by establishing an epigenetic state early in endosperm development that primes the depth of primary seed dormancy later established during seed maturation. VEL3 relocates MSI1 to the nucleolus and associates with other components of the histone deacetylase complex (HDAC). Furthermore VEL3 preferentially associates with pericentromeric chromatin and is required for deacetylation and H3K27me3 deposition and is required for gene repression via PRC2 and HDAC at pericentromeric regions established in the central cell. Interestingly, the epigenetic state established by the maternal VEL3 is retained trans-generationally in mature seeds, and controls seed dormancy in part through the repression of programmed cell death-associated gene ORE1. Our data demonstrates a novel mechanism by which maternal control of progeny seed physiology persists post-shedding, maintaining parental control of seed behaviour.

2023-03-16 | GSE202802 | GEO

Photoperiod regulation of grape bud dormancy

Project description:Photoperiod regulation of grape bud dormancy

| PRJNA118913 | ENA

Proteomic analysis of dormancy induction in grapevine

Project description:Grapes are a valuable fruit and an important economic crop in the world, where wine production is a major industry. In grapevine, the environmental regulation of bud dormancy varies among its diverse genotypes. Certain grapevine genotypes become dormant in response to decreasing photoperiod and others require low temperature or both environmental cues to induce dormancy. This study used a proteomic approach to gain an understanding of the underlying molecular events involved in bud dormancy commitment.

2018-06-29 | PXD001627 | Pride

affy_sunflower_2010_13-ROS and hormones in sunflower seed dormancy.

Project description:affy_sunflower_2010_13 - affy_sunflower_2010_13 - It concerns the interaction between ROS and hormones in dormancy release in sunflower seeds. ABA is responsible for dormancy maintenance, while GA and ethylene promote seed germination. Based on our results, ROS could represent good candidate to shift from a hormone signalling to another determining the dormancy state in sunflower seeds.-We aim to understand the mechanisms controlling sunflower seed dormancy at the transcriptomic level, by the application of treatments which maintain dormancy as ABA, or alleviate dormancy as ROS and ethylene. Transcripts comparison will be performed between dormant and non-dormant sunflower embryo imbibed 24h on water, on ABA, on methylviologen, a pro-oxidant compound or on ethylene.

2013-08-01 | GSE44165 | GEO

affy_sunflower_2010_13-ROS and hormones in sunflower seed dormancy.

2013-08-01 | E-GEOD-44165 | biostudies-arrayexpress

Fennell Grapevine Dormancy - Understanding transduction of the photoperiod signal

Project description:To begin understanding transduction of the photoperiod signal, Vitis riparia Michx. (PI588259) grapevines that had grown for 35 days in long photoperiod (long day, LD, 15h) were subjected to either continued LD or a short photoperiod (short day, SD, 13h) treatment. Shoot tips (4-node shoot terminals) were collected from each treatment at 7 and 28 days of LD and SD for proteomic analysis via two-dimensional (2D) gel electrophoresis. The peptides were identified using MALDI-TOF_TOF mass spectrometer after trypsin digestion. A master gel was made and mapped with all p roteins from both photoperiod treatments. The proteins were identified by matching the peptide sequences against the 12X Vitis vinifera grape genome in NCBI. This study was funded in part by NSF grant DBI064755 and the South Dakota Agriculture Experiment Station.

2011-01-26 | PRD000377 | Pride

The grain yield modulator miR156 regulates seed dormancy through the gibberellin pathway in rice

Project description:The widespread agricultural problem of pre-harvest sprouting (PHS) could potentially be overcome by improving seed dormancy. Here, we report that miR156, an important grain yield regulator, also controls seed dormancy in rice. We found that mutations in one MIR156 subfamily enhance seed dormancy and suppress PHS with negligible effects on shoot architecture and grain size, whereas mutations in another MIR156 subfamily modify shoot architecture and increase grain size but have minimal effects on seed dormancy. Mechanistically, mir156 mutations enhance seed dormancy by suppressing the gibberellin (GA) pathway through de-represssion of the miR156 target gene Ideal Plant Architecture 1 (IPA1), which directly regulates multiple genes in the GA pathway. These results provide an effective method to suppress PHS without compromising productivity, and will facilitate breeding elite crop varieties with ideal plant architectures.

2019-09-03 | GSE131243 | GEO

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