scholarly journals Exogenous Gibberellins Induce Wheat Spike Development under Short Days Only in the Presence of VERNALIZATION1

2013 ◽  
Vol 163 (3) ◽  
pp. 1433-1445 ◽  
Author(s):  
Stephen Pearce ◽  
Leonardo S. Vanzetti ◽  
Jorge Dubcovsky
Keyword(s):  
Spike Development ◽  
Short Days ◽  
Wheat Spike

scholarly journals Simulating winter wheat spike development and growth

1992 ◽  
Vol 60 (3-4) ◽  
pp. 193-220 ◽  
Author(s):  
Gregory S. McMaster ◽  
Jack A. Morgan ◽  
W.W. Wilhelm
Keyword(s):  
Winter Wheat ◽  
Spike Development ◽  
Wheat Spike

Cullin, a component of the SCF complex, interacts with TaRMD5 during wheat spike development

2014 ◽  
Vol 58 (2) ◽  
pp. 218-230
Author(s):  
M. J. Hong ◽  
D. Y. Kim ◽  
Y. W. Seo
Keyword(s):  
Scf Complex ◽  
Spike Development ◽  
Wheat Spike

scholarly journals Interactions Between SQUAMOSA and SVP MADS-box Proteins Regulate Meristem Transitions During Wheat Spike Development

2020 ◽  
Author(s):  
Kun Li ◽  
Juan M. Debernardi ◽  
Chengxia Li ◽  
Huiqiong Lin ◽  
Chaozhong Zhang ◽  
...  
Keyword(s):  
Floral Development ◽  
Stem Elongation ◽  
Constitutive Expression ◽  
Genetic Interactions ◽  
Mads Box ◽  
Mads Box Genes ◽  
Down Regulation ◽  
Spike Development ◽  
Physical Interactions ◽  
Wheat Spike

ABSTRACTA better understanding of spike development can contribute to improving wheat productivity. MADS-box genes VRN1 and FUL2 (SQUAMOSA-clade) play critical and redundant roles in wheat spike and spikelet development, where they act as repressors of MADS-box genes of the SHORT VEGETATIVE PHASE (SVP) clade (VRT2, SVP1 and SVP3). Here, we show that wheat vrt2 svp1 mutants are late flowering, have shorter stems, increased number of spikelets per spike and unusual axillary inflorescences in nodes of the elongating stem. Constitutive expression of VRT2 resulted in leafy glumes and lemmas, reversion of basal spikelets to spikes, and down-regulation of MADS-genes involved in floral development. Moreover, constitutive expression of VRT2 enhanced spikelet defects of ful2, whereas vrt2 reduced vegetative characteristics in the spikelets of vrn1 ful2 mutants heterozygous for VRN-A1. These SVP-SQUAMOSA genetic interactions were paralleled by physical interactions among their encoded proteins. SVP proteins were able to reduce SQUAMOSA-SEPALLATA interactions in yeast-three-hybrid experiments. We propose that SQUAMOSA-SVP complexes act during the early reproductive phase to promote heading, formation of the terminal spikelet, and stem elongation, but that down-regulation of SVP genes is then necessary for the formation of SQUAMOSA-SEPALLATA complexes that are required for normal spikelet and floral development.

Wheat F-box protein recruits proteins and regulates their abundance during wheat spike development

2012 ◽  
Vol 39 (10) ◽  
pp. 9681-9696 ◽  
Author(s):  
Min Jeong Hong ◽  
Dae Yeon Kim ◽  
Si Yong Kang ◽  
Dong Sub Kim ◽  
Jin Baek Kim ◽  
...  
Keyword(s):  
Spike Development ◽  
F Box Protein ◽  
Wheat Spike

scholarly journals Genome-wide profiling of long noncoding RNAs involved in wheat spike development

BMC Genomics ◽  
2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Pei Cao ◽  
Wenjuan Fan ◽  
Pengjia Li ◽  
Yuxin Hu
Keyword(s):  
Stress Responses ◽  
Regulatory Networks ◽  
Developmental Stages ◽  
Genetic Manipulation ◽  
Noncoding Rnas ◽  
Long Noncoding Rnas ◽  
Differentially Expressed ◽  
Genome Wide ◽  
Spike Development ◽  
Wheat Spike

Abstract Background Long noncoding RNAs (lncRNAs) have been shown to play important roles in the regulation of plant growth and development. Recent transcriptomic analyses have revealed the gene expression profiling in wheat spike development, however, the possible regulatory roles of lncRNAs in wheat spike morphogenesis remain largely unclear. Results Here, we analyzed the genome-wide profiling of lncRNAs during wheat spike development at six stages, and identified a total of 8,889 expressed lncRNAs, among which 2,753 were differentially expressed lncRNAs (DE lncRNAs) at various developmental stages. Three hundred fifteen differentially expressed cis- and trans-regulatory lncRNA-mRNA pairs comprised of 205 lncRNAs and 279 genes were predicted, which were found to be mainly involved in the stress responses, transcriptional and enzymatic regulations. Moreover, the 145 DE lncRNAs were predicted as putative precursors or target mimics of miRNAs. Finally, we identified the important lncRNAs that participate in spike development by potentially targeting stress response genes, TF genes or miRNAs. Conclusions This study outlines an overall view of lncRNAs and their possible regulatory networks during wheat spike development, which also provides an alternative resource for genetic manipulation of wheat spike architecture and thus yield.

scholarly journals Identifying new variation at the J locus, previously identified as e6, in long juvenile ‘Paranagoiana’ soybean

2021 ◽  
Author(s):  
Nour Nissan ◽  
Elroy R. Cober ◽  
Michael Sadowski ◽  
Martin Charette ◽  
Ashkan Golshani ◽  
...  
Keyword(s):  
Single Gene ◽  
Pcr Amplification ◽  
Gene Control ◽  
Grain Yields ◽  
Short Day ◽  
Exon 4 ◽  
Short Days ◽  
Kasp Markers

Abstract Key message A previously identified soybean maturity locus, E6, is discovered to be J, with the long juvenile allele in Paranagoiana now deemed j−x. Abstract Soybean grown at latitudes of ~20° or lower can produce lower grain yields due to the short days. This limitation can be overcome by using the long juvenile trait (LJ) which delays flowering under short day conditions. Two LJ loci have been mapped to the same location on Gm04, J and E6. The objective of this research was to investigate the e6 allele in ‘Paranagoiana’ and determine if E6 and J are the same locus or linked loci. KASP markers showed that e6 lines did not have the j−1 allele of LJ PI 159925. A population fixed for E1 but segregating for E6, with e6 introgressed from Paranagoiana, showed single gene control for flowering and maturity under short days. Sequencing Glyma.04G050200, the J gene, with long amplification Taq found that the e6 line ‘Paranagoiana’ contains a Ty1-copia retrotransposon of ~10,000 bp, inserted within exon 4. PCR amplification of the cDNA of Glyma.04G050200 also showed differences between the mRNA sequences (presence of insertion in j−x). Hence, we conclude that the loci E6 and J are one locus and deem this new variation found in Paranagoiana as j−x.

Novel Loci Control Variation in Reproductive Timing inArabidopsis thalianain Natural Environments

Genetics ◽  
2002 ◽  
Vol 162 (4) ◽  
pp. 1875-1884 ◽  
Author(s):  
Cynthia Weinig ◽  
Mark C Ungerer ◽  
Lisa A Dorn ◽  
Nolan C Kane ◽  
Yuko Toyonaga ◽  
...  
Keyword(s):  
Genetic Basis ◽  
Allelic Variation ◽  
Developmental Pathways ◽  
Natural Environments ◽  
Reproductive Timing ◽  
Controlled Environments ◽  
Photoperiod Pathway ◽  
Differential Involvement ◽  
Short Days ◽  
Transition To Flowering

AbstractMolecular biologists are rapidly characterizing the genetic basis of flowering in model species such as Arabidopsis thaliana. However, it is not clear how the developmental pathways identified in controlled environments contribute to variation in reproductive timing in natural ecological settings. Here we report the first study of quantitative trait loci (QTL) for date of bolting (the transition from vegetative to reproductive growth) in A. thaliana in natural seasonal field environments and compare the results with those obtained under typical growth-chamber conditions. Two QTL specific to long days in the chamber were expressed only in spring-germinating cohorts in the field, and two loci specific to short days in the chamber were expressed only in fall-germinating cohorts, suggesting differential involvement of the photoperiod pathway in different seasonal environments. However, several other photoperiod-specific QTL with large effects in controlled conditions were undetectable in natural environments, indicating that expression of allelic variation at these loci was overridden by environmental factors specific to the field. Moreover, a substantial number of QTL with major effects on bolting date in one or more field environments were undetectable under controlled environment conditions. These novel loci suggest the involvement of additional genes in the transition to flowering under ecologically relevant conditions.

Pineal denervation by cervical sympathetic ganglionectomy suppresses the role of photoperiod on pregnancy or pseudopregnancy, body weight and moulting periods in the mink (Mustela vison)

1985 ◽  
Vol 107 (1) ◽  
pp. 31-39 ◽  
Author(s):  
L. Martinet ◽  
D. Allain ◽  
Y. Chabi
Keyword(s):  
Body Weight ◽  
Environmental Factors ◽  
Prolactin Secretion ◽  
Corpora Lutea ◽  
Progesterone Secretion ◽  
Cervical Ganglion ◽  
Cervical Sympathetic ◽  
Implantation Period ◽  
Short Days

ABSTRACT In mink, termination of the delayed implantation period, following reactivation of the corpora lutea, and onset of the spring moult are associated with a rise in prolactin secretion triggered by increasing daylength, while decreasing daylength induces the autumn moult. To establish whether suppression of the function of the pineal rendered the mink unresponsive to daylength changes, the superior cervical ganglion was removed bilaterally 2–4 weeks before mating. Intact and operated females were then left outdoors or were put under a lighting regime of either 15 h light: 9 h darkness (15L: 9D) or 8L: 16D. In July, at the end of the spring moult, the 15L: 9D lighting regime was changed to one of 8L: 16D. Under artificial photoperiods ganglionectomy suppressed the stimulatory role of long days and the inhibitory role of short days on prolactin secretion, and consequently on progesterone secretion and spring moult. Neither was the autumn moult, induced early in intact females by the change to a short photoperiod, advanced in ganglionectomized females, showing that the latter were unresponsive to the artificial modification of the photoperiod. However, in animals kept outdoors, prolactin and progesterone secretion and spring moult were not changed by ganglionectomy. Increase in body weight and autumn moult were only slightly delayed by the operation suggesting that other environmental factors had replaced the synchronizing effect of the daylength changes. Alternatively the desynchronization between intact females responsive to photoperiodism and those rendered unresponsive may be too slow to be observed soon after ganglionectomy. J. Endocr. (1985) 107, 31–39

Recommending property with short days-on-market for estate agency

2017 ◽  
Vol 9 (6) ◽  
pp. 2077-2092 ◽  
Author(s):  
Chao Mou ◽  
Qing Zhou ◽  
Yinan Ran ◽  
Liang Ge ◽  
Yong Wang
Keyword(s):  
Estate Agency ◽  
Short Days
Sign in / Sign up

Export Citation Format

Share Document