scholarly journals Natural variation in GmGBP1 promoter affects photoperiod control of flowering time and maturity in soybean

2018 ◽  
Vol 96 (1) ◽  
pp. 147-162 ◽  
Author(s):  
Lin Zhao ◽  
Minmin Li ◽  
Chongjing Xu ◽  
Xue Yang ◽  
Dongmei Li ◽  
...  
Keyword(s):  
Flowering Time ◽  
Natural Variation ◽  
Photoperiod Control

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 Natural variation in GmRAV confers ecological adaptation through photoperiod control of flowering time and maturity in soybean

2021 ◽  
Author(s):  
Yuhe Wang ◽  
Chongjing Xu ◽  
Jiafan Sun ◽  
Lidong Dong ◽  
Minmin Li ◽  
...  
Keyword(s):  
Flowering Time ◽  
Target Genes ◽  
Growth Period ◽  
Growth Stages ◽  
Rna Seq ◽  
Binding Motifs ◽  
Cis Acting ◽  
Transgenic Lines ◽  
Vegetative And Reproductive Growth ◽  
Photoperiod Control

ABSTRACTPhotoperiod strictly controlled vegetative and reproductive growth stages in soybean. A soybean GmRAV transcription factor containing both AP2 and B3 domains was shown to be a key component of this process. We identified six polymorphisms in GmRAV promoter that showed significant association with flowering time and maturity of soybean in one or multiple environments. Soybean varieties with minor polymorphism exhibited longer growth period contributing to soybean adaptation to lower latitudes. The cis-acting element GT1CONSENSUS motif of GmRAV promoter controlled the growth period and shortened R5-R7 by reducing the expression level of GmRAV in soybean. Three GmRAV-overexpressing (GmRAV-ox) transgenic lines displayed later flowering time and maturity, shorter height and fewer numbers of leaves compared with control plants, and transgenic inhibition of GmRAV (GmRAV-i) soybean displayed earlier flowering time and maturity, and increased plant heights. 163 GmRAV-target genes were determined to be putatively directly bound and transcriptionally regulated by GmRAV by combining the results from the DAP-seq and RNA-seq analyses. Two GmRAV binding motifs [C(A/G/T)A(C)ACAA(G/T)A(C/T)A(G/T)] and [C(T/A)A(C/T) C(T/G)CTG] were identified. GmRAV acting downstream of E3E4 delayed soybean growth period by repressing GmFT5a transcriptional activity to guaranteed both vegetative and reproductive phase long enough to allow necessary energy reserved to be accumulated.

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.

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