scholarly journals Changing Responses to Changing Seasons: Natural Variation in the Plasticity of Flowering Time

2016 ◽  
Vol 173 (1) ◽  
pp. 16-26 ◽  
Author(s):  
Benjamin K. Blackman
Keyword(s):  
Flowering Time ◽  
Natural Variation

scholarly journals Natural Variation of Flowering Time and Vernalization Responsiveness in Brachypodium distachyon

2010 ◽  
Vol 3 (1) ◽  
pp. 38-46 ◽  
Author(s):  
Christopher J. Schwartz ◽  
Mark R. Doyle ◽  
Antonio J. Manzaneda ◽  
Pedro J. Rey ◽  
Thomas Mitchell-Olds ◽  
...  
Keyword(s):  
Flowering Time ◽  
Natural Variation ◽  
Brachypodium Distachyon

scholarly journals Natural Variation of the RICE FLOWERING LOCUS T 1 Contributes to Flowering Time Divergence in Rice

PLoS ONE ◽  
2013 ◽  
Vol 8 (10) ◽  
pp. e75959 ◽  
Author(s):  
Eri Ogiso-Tanaka ◽  
Kazuki Matsubara ◽  
Shin-ichi Yamamoto ◽  
Yasunori Nonoue ◽  
Jianzhong Wu ◽  
...  
Keyword(s):  
Flowering Time ◽  
Natural Variation ◽  
Flowering Locus T ◽  
Flowering Locus

scholarly journals Seasonal shift in timing of vernalization as an adaptation to extreme winter

eLife ◽  
2015 ◽  
Vol 4 ◽  
Author(s):  
Susan Duncan ◽  
Svante Holm ◽  
Julia Questa ◽  
Judith Irwin ◽  
Alastair Grant ◽  
...  
Keyword(s):  
Flowering Time ◽  
Natural Variation ◽  
Vernalization Response ◽  
Northern Limit ◽  
Geographical Regions ◽  
Field Temperature ◽  
Floral Repressor ◽  
Temperature Records ◽  
Historical Temperature ◽  
Transplantation Experiments

The requirement for vernalization, a need for prolonged cold to trigger flowering, aligns reproductive development with favorable spring conditions. In Arabidopsis thaliana vernalization depends on the cold-induced epigenetic silencing of the floral repressor locus FLC. Extensive natural variation in vernalization response is associated with A. thaliana accessions collected from different geographical regions. Here, we analyse natural variation for vernalization temperature requirement in accessions, including those from the northern limit of the A. thaliana range. Vernalization required temperatures above 0°C and was still relatively effective at 14°C in all the accessions. The different accessions had characteristic vernalization temperature profiles. One Northern Swedish accession showed maximum vernalization at 8°C, both at the level of flowering time and FLC chromatin silencing. Historical temperature records predicted all accessions would vernalize in autumn in N. Sweden, a prediction we validated in field transplantation experiments. The vernalization response of the different accessions was monitored over three intervals in the field and found to match that when the average field temperature was given as a constant condition. The vernalization temperature range of 0–14°C meant all accessions fully vernalized before snowfall in N. Sweden. These findings have important implications for understanding the molecular basis of adaptation and for predicting the consequences of climate change on flowering time.

scholarly journals Genome-wide association analyses reveal complex genetic architecture underlying natural variation for flowering time in canola

2016 ◽  
Vol 39 (6) ◽  
pp. 1228-1239 ◽  
Author(s):  
H. Raman ◽  
R. Raman ◽  
N. Coombes ◽  
J. Song ◽  
R. Prangnell ◽  
...  
Keyword(s):  
Flowering Time ◽  
Genetic Architecture ◽  
Natural Variation ◽  
Genome Wide Association ◽  
Association Analyses ◽  
Genome Wide

scholarly journals Functional variants of DOG1 control seed chilling responses and variation in seasonal life-history strategies in Arabidopsis thaliana

2020 ◽  
Vol 117 (5) ◽  
pp. 2526-2534 ◽  
Author(s):  
Alejandra Martínez-Berdeja ◽  
Michelle C. Stitzer ◽  
Mark A. Taylor ◽  
Miki Okada ◽  
Exequiel Ezcurra ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Life History ◽  
Seed Germination ◽  
Flowering Time ◽  
Life Histories ◽  
Natural Variation ◽  
Life History Strategies ◽  
Candidate Snps ◽  
Environmental Niche ◽  
Functional Variants

The seasonal timing of seed germination determines a plant’s realized environmental niche, and is important for adaptation to climate. The timing of seasonal germination depends on patterns of seed dormancy release or induction by cold and interacts with flowering-time variation to construct different seasonal life histories. To characterize the genetic basis and climatic associations of natural variation in seed chilling responses and associated life-history syndromes, we selected 559 fully sequenced accessions of the model annual species Arabidopsis thaliana from across a wide climate range and scored each for seed germination across a range of 13 cold stratification treatments, as well as the timing of flowering and senescence. Germination strategies varied continuously along 2 major axes: 1) Overall germination fraction and 2) induction vs. release of dormancy by cold. Natural variation in seed responses to chilling was correlated with flowering time and senescence to create a range of seasonal life-history syndromes. Genome-wide association identified several loci associated with natural variation in seed chilling responses, including a known functional polymorphism in the self-binding domain of the candidate gene DOG1. A phylogeny of DOG1 haplotypes revealed ancient divergence of these functional variants associated with periods of Pleistocene climate change, and Gradient Forest analysis showed that allele turnover of candidate SNPs was significantly associated with climate gradients. These results provide evidence that A. thaliana’s germination niche and correlated life-history syndromes are shaped by past climate cycles, as well as local adaptation to contemporary climate.

scholarly journals Molecular variation in a functionally divergent homolog of FCA regulates flowering time in Arabidopsis thaliana

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Yunhe Wang ◽  
Zhen Tao ◽  
Wanyi Wang ◽  
Daniele Filiault ◽  
Chunhong Qiu ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Flowering Time ◽  
Natural Variation ◽  
Functional Characterization ◽  
Molecular Variation ◽  
Protein Variant ◽  
Genome Wide ◽  
Natural Variants ◽  
Close Homolog

AbstractThe identification and functional characterization of natural variants in plants are essential for understanding phenotypic adaptation. Here we identify a molecular variation in At2g47310 that contributes to the natural variation in flowering time in Arabidopsis thaliana accessions. This gene, which we term SISTER of FCA (SSF), functions in an antagonistic manner to its close homolog FCA. Genome-wide association analysis screens two major haplotypes of SSF associated with the natural variation in FLC expression, and a single polymorphism, SSF-N414D, is identified as a main contributor. The SSF414N protein variant interacts more strongly with CUL1, a component of the E3 ubiquitination complex, than the SSF414D form, mediating differences in SSF protein degradation and FLC expression. FCA and SSF appear to have arisen through gene duplication after dicot-monocot divergence, with the SSF-N414D polymorphism emerging relatively recently within A. thaliana. This work provides a good example for deciphering the functional importance of natural polymorphisms in different organisms.

scholarly journals Association Studies Identify Natural Variation at PHYC Linked to Flowering Time and Morphological Variation in Pearl Millet

Genetics ◽  
2009 ◽  
Vol 182 (3) ◽  
pp. 899-910 ◽  
Author(s):  
Abdoul-Aziz Saïdou ◽  
Cédric Mariac ◽  
Vivianne Luong ◽  
Jean-Louis Pham ◽  
Gilles Bezançon ◽  
...  
Keyword(s):  
Flowering Time ◽  
Pearl Millet ◽  
Morphological Variation ◽  
Natural Variation ◽  
Association Studies
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