Editorial: Recent Advances in Flowering Time Control

Jung, Christian; Pillen, Klaus; Staiger, Dorothee; Coupland, George; Korff, Maria von

doi:10.3389/fpls.2016.02011

Cited by 31 publications

(32 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…As a plant transitions between developmental stages, such as the transition from vegetative to reproductive development (floral transition), or the subsequent transition from reproductive to grain and/or seed development, there are pronounced variations to both the physiological and phenotypic characteristics of the plant, both of which are underpinned by intricate, yet distinct genetic networks [117,118]. Moreover, the gene networks controlling these transitions in development, have been shown to be themselves, regulated by miRNAs [119][120][121]. It is, therefore, highly probable that if an abiotic stress such as drought is encountered by a cropping species such as rice during vegetative development, that the molecular responses underpinning the physiological and phenotypic alterations at this stage of development, would vary greatly compared to those of a rice plant during the reproductive phase of development if an identical stress was encountered.…”

Section: Timing Treatment Tissue and "Tolerance" To Drought And Salmentioning

confidence: 99%

Profiling of the Differential Abundance of Drought and Salt Stress-Responsive MicroRNAs Across Grass Crop and Genetic Model Plant Species

Pegler¹,

Grof²,

Eamens³

2018

Agronomy

View full text Add to dashboard Cite

In recent years, it has become readily accepted among interdisciplinary agriculturalists that the current global crop yield to land capability ratio is significantly insufficient to achieve food security for the predicted population of 9.5 billion individuals by the year 2050. This issue is further compounded by the: (1) food versus biofuel debate; (2) decreasing availability of arable land; (3) required reductions to the extensive and ongoing environmental damage caused by either poor agricultural practices or agriculture expansion, and; (4) increasingly unfavorable (duration and severity) crop cultivation conditions that accompany man-made climate change, driven by ever-expanding urbanization and its associated industrial practices. Mounting studies are repeatedly highlighting the critical importance of linking genotypes to agronomically beneficial phenotypes and/or using a molecular approach to help address this global crisis, as "simply" clearing the remaining natural ecosystems of the globe for the cultivation of additional, non-modified crops is not efficient, nor is this practice sustainable. The majority of global food crop production is sourced from a small number of members of the Poaceae family of grasses, namely; maize (Zea mays L.), wheat (Triticum aestivum L.) and rice (Oryza sativa L.). It is, therefore, of significant concern that all three of these Poaceae grass species are susceptible to a range of abiotic stresses, including drought and salt stress. Highly conserved among monocotyledonous and dicotyledonous plant species, microRNAs (miRNAs) are now well-established master regulators of gene expression, influencing all aspects of plant development, mediating defense responses against pathogens and adaptation to environmental stress. Here we investigate the variation in the abundance profiles of six known abiotic stress-responsive miRNAs, following exposure to salt and drought stress across these three key Poaceae grass crop species as well as to compare these profiles to those obtained from the well-established genetic model plant species, Arabidopsis thaliana (L.) Heynh. Additionally, we outline the variables that are the most likely primary contributors to instances of differential miRNA abundance across the assessed species following drought or salt stress exposure, specifically; (1) identifying variations in the experimental conditions and/or methodology used to assess miRNA abundance, and; (2) the distribution of regulatory transcription factor binding sites within the putative promoter region of a MICRORNA (MIR) gene that encodes the highly conserved, stress-responsive miRNA. We also discuss the emerging role that non-conserved, species-specific miRNAs play in mediating a plant's response to drought or salt stress.

show abstract

Section: Timing Treatment Tissue and "Tolerance" To Drought And Salmentioning

confidence: 99%

Profiling of the Differential Abundance of Drought and Salt Stress-Responsive MicroRNAs Across Grass Crop and Genetic Model Plant Species

Pegler¹,

Grof²,

Eamens³

2018

Agronomy

View full text Add to dashboard Cite

show abstract

“…Flowering time in temperate plants is influenced by multiple environmental factors related to temperature and day length at different periods of the year (Wilczek et al, 2009 ; Cook et al, 2012 ; Abbott et al, 2015 ). For crop cultivation, floral timing is of utmost importance, because it is a major yield determinant (Jung et al, 2017 ). Temperate fruit trees use bud dormancy for adaption to seasonality (Campoy et al, 2011 ; Sánchez-Pérez et al, 2014 ; Ionescu et al, 2017 ): flowering occurs uniformly when the chilling and heating requirements associated with winter and spring have been fulfilled.…”

Section: Introductionmentioning

confidence: 99%

Genome-Wide Association Mapping of Flowering and Ripening Periods in Apple

et al. 2017

View full text Add to dashboard Cite

Deciphering the genetic control of flowering and ripening periods in apple is essential for breeding cultivars adapted to their growing environments. We implemented a large Genome-Wide Association Study (GWAS) at the European level using an association panel of 1,168 different apple genotypes distributed over six locations and phenotyped for these phenological traits. The panel was genotyped at a high-density of SNPs using the Axiom®Apple 480 K SNP array. We ran GWAS with a multi-locus mixed model (MLMM), which handles the putatively confounding effect of significant SNPs elsewhere on the genome. Genomic regions were further investigated to reveal candidate genes responsible for the phenotypic variation. At the whole population level, GWAS retained two SNPs as cofactors on chromosome 9 for flowering period, and six for ripening period (four on chromosome 3, one on chromosome 10 and one on chromosome 16) which, together accounted for 8.9 and 17.2% of the phenotypic variance, respectively. For both traits, SNPs in weak linkage disequilibrium were detected nearby, thus suggesting the existence of allelic heterogeneity. The geographic origins and relationships of apple cultivars accounted for large parts of the phenotypic variation. Variation in genotypic frequency of the SNPs associated with the two traits was connected to the geographic origin of the genotypes (grouped as North+East, West and South Europe), and indicated differential selection in different growing environments. Genes encoding transcription factors containing either NAC or MADS domains were identified as major candidates within the small confidence intervals computed for the associated genomic regions. A strong microsynteny between apple and peach was revealed in all the four confidence interval regions. This study shows how association genetics can unravel the genetic control of important horticultural traits in apple, as well as reduce the confidence intervals of the associated regions identified by linkage mapping approaches. Our findings can be used for the improvement of apple through marker-assisted breeding strategies that take advantage of the accumulating additive effects of the identified SNPs.

show abstract

“…Flowering plays an important role in plant growth and development in Arabidopsis (Jung, Pillen, Staiger, Coupland, & Korff, 2017). Plants with later flowering times are more likely to have larger plant sizes due to the longer vegetative phase.…”

Section: Flowering Genes Play a Role In Producing The Large Rosettementioning

confidence: 99%

In Arabidopsis hybrids and Hybrid Mimics, up‐regulation of cell wall biogenesis is associated with the increased plant size

Wang

Greaves

et al. 2019

Plant Direct

View full text Add to dashboard Cite

Hybrid breeding is of economic importance in agriculture for increasing yield, yet the basis of heterosis is not well understood. In Arabidopsis, crosses between different accessions produce hybrids with different levels of heterosis relative to parental phenotypes in biomass. In all hybrids, the advantage of the F1 hybrid in both phenotypic uniformity and yield gain is lost in the heterogeneous F2. F5/F6 Hybrid Mimics generated from a cross between C24 and Landsberg erecta (Ler) ecotypes demonstrated that the large plant phenotype of the F1 hybrids can be stabilized. Hybrid Mimic selection was applied to Wassilewskija (Ws)/Ler and Col/Ler hybrids. The two hybrids show different levels of heterosis. The Col/Ler hybrid generated F7 Hybrid Mimics with rosette diameter and fresh weight equivalent to the F1 hybrid at 30 DAS; F7 Ws/Ler Hybrid Mimics outperformed the F1 hybrid in both the rosette size and biomass. Transcriptome analysis revealed up‐regulation of cell wall biosynthesis, and cell wall expansion genes could be a common pathway in increased size in the Arabidopsis hybrids and Hybrid Mimics. Intercross of two independent Hybrid Mimic lines can further increase the biomass gain. Our results encourage the use of Hybrid Mimics for breeding and for investigating the molecular basis of heterosis.

show abstract

Editorial: Recent Advances in Flowering Time Control

Cited by 31 publications

References 19 publications

Profiling of the Differential Abundance of Drought and Salt Stress-Responsive MicroRNAs Across Grass Crop and Genetic Model Plant Species

Profiling of the Differential Abundance of Drought and Salt Stress-Responsive MicroRNAs Across Grass Crop and Genetic Model Plant Species

Genome-Wide Association Mapping of Flowering and Ripening Periods in Apple

In Arabidopsis hybrids and Hybrid Mimics, up‐regulation of cell wall biogenesis is associated with the increased plant size

Contact Info

Product

Resources

About