scholarly journals Arabidopsis thaliana FLO2 is Involved in Efficiency of Photoassimilate Translocation, Which is Associated with Leaf Growth and Aging, Yield of Seeds and Seed Quality

2017 ◽  
Vol 58 (3) ◽  
pp. 440-450 ◽  
Author(s):  
Miho Kihira ◽  
Kazushi Taniguchi ◽  
Chihiro Kaneko ◽  
Yohei Ishii ◽  
Hiromi Aoki ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Seed Quality ◽  
Leaf Growth ◽  
Photoassimilate Translocation ◽  
Growth And Aging

scholarly journals The ATXN2 Orthologs CID3 and CID4, Act Redundantly to In-Fluence Developmental Pathways throughout the Life Cycle of Arabidopsis thaliana

2021 ◽  
Vol 22 (6) ◽  
pp. 3068
Author(s):  
Zaira M. López-Juárez ◽  
Laura Aguilar-Henonin ◽  
Plinio Guzmán
Keyword(s):  
Arabidopsis Thaliana ◽  
Life Cycle ◽  
Binding Proteins ◽  
Rna Binding ◽  
Rna Binding Proteins ◽  
Leaf Growth ◽  
Transcriptome Profiling ◽  
Developmental Pathways ◽  
Model Organisms ◽  
Key Factors

RNA-binding proteins (RBPs) are key elements involved in post-transcriptional regulation. Ataxin-2 (ATXN2) is an evolutionarily conserved RBP protein, whose function has been studied in several model organisms, from Saccharomyces cerevisiae to the Homo sapiens. ATXN2 interacts with poly(A) binding proteins (PABP) and binds to specific sequences at the 3′UTR of target mRNAs to stabilize them. CTC-Interacting Domain3 (CID3) and CID4 are two ATXN2 orthologs present in plant genomes whose function is unknown. In the present study, phenotypical and transcriptome profiling were used to examine the role of CID3 and CID4 in Arabidopsis thaliana. We found that they act redundantly to influence pathways throughout the life cycle. cid3cid4 double mutant showed a delay in flowering time and a reduced rosette size. Transcriptome profiling revealed that key factors that promote floral transition and floral meristem identity were downregulated in cid3cid4 whereas the flowering repressor FLOWERING LOCUS C (FLC) was upregulated. Expression of key factors in the photoperiodic regulation of flowering and circadian clock pathways, were also altered in cid3cid4, as well as the expression of several transcription factors and miRNAs encoding genes involved in leaf growth dynamics. These findings reveal that ATXN2 orthologs may have a role in developmental pathways throughout the life cycle of plants.

scholarly journals Osmotic stress inhibits leaf growth of Arabidopsis thaliana by enhancing ARF‐mediated auxin responses

2020 ◽  
Vol 226 (6) ◽  
pp. 1766-1780 ◽  
Author(s):  
Shweta Kalve ◽  
Bulelani L. Sizani ◽  
Marios Nektarios Markakis ◽  
Céline Helsmoortel ◽  
Geert Vandeweyer ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Osmotic Stress ◽  
Leaf Growth

scholarly journals The REIL1 and REIL2 Proteins of Arabidopsis thaliana Are Required for Leaf Growth in the Cold

2013 ◽  
Vol 163 (4) ◽  
pp. 1623-1639 ◽  
Author(s):  
S. Schmidt ◽  
F. Dethloff ◽  
O. Beine-Golovchuk ◽  
J. Kopka
Keyword(s):  
Arabidopsis Thaliana ◽  
Leaf Growth

Secondary dormancy inBrassica napusis correlated with enhancedBnaDOG1transcript levels

2015 ◽  
Vol 25 (2) ◽  
pp. 221-229 ◽  
Author(s):  
Guillaume Née ◽  
Evelyn Obeng-Hinneh ◽  
Pourya Sarvari ◽  
Kazumi Nakabayashi ◽  
Wim J.J. Soppe
Keyword(s):  
Arabidopsis Thaliana ◽  
Seed Dormancy ◽  
Seed Quality ◽  
High Homology ◽  
Transcript Levels ◽  
Secondary Dormancy ◽  
Similar Expression Pattern ◽  
Low Levels ◽  
Selection For ◽  
Conserved Gene

AbstractDormancy has evolved in plants to restrict germination to favourable growth seasons. Seeds from most crop plants have low dormancy levels due to selection for immediate germination during domestication. Seed dormancy is usually not completely lost and low levels are required to maintain sufficient seed quality.Brassica napuscultivars show low levels of primary seed dormancy. However,B. napusseeds are prone to the induction of secondary dormancy, which can lead to the occurrence of volunteers in the field in subsequent years after cultivation. TheDELAY OF GERMINATION 1(DOG1) gene has been identified as a major dormancy gene in the model plantArabidopsis thaliana.DOG1is a conserved gene and has been shown to be required for seed dormancy in various monocot and dicot plant species. We have identified threeB. napusgenes with high homology toAtDOG1, which we namedBnaA.DOG1.a,BnaC.DOG1.aandBnaC.DOG1.b. The transcripts of these genes could only be detected in seeds and showed a similar expression pattern during seed maturation asAtDOG1. In addition, theBnaDOG1genes showed enhanced transcript levels after the induction of secondary dormancy. These results suggest a role forDOG1in the induction of secondary dormancy inB. napus.

scholarly journals Arabidopsis thaliana alpha1,2‐glucosyltransferase (ALG10) is required for efficient N‐glycosylation and leaf growth

2011 ◽  
Vol 68 (2) ◽  
pp. 314-325 ◽  
Author(s):  
Akhlaq Farid ◽  
Martin Pabst ◽  
Jennifer Schoberer ◽  
Friedrich Altmann ◽  
Josef Glössl ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Leaf Growth

scholarly journals Structural assessment of the impact of environmental constraints on Arabidopsis thaliana leaf growth: a 3D approach

2012 ◽  
Vol 35 (9) ◽  
pp. 1631-1646 ◽  
Author(s):  
NATHALIE WUYTS ◽  
CATHERINE MASSONNET ◽  
MYRIAM DAUZAT ◽  
CHRISTINE GRANIER
Keyword(s):  
Arabidopsis Thaliana ◽  
Leaf Growth ◽  
Environmental Constraints ◽  
Structural Assessment ◽  
The Impact

scholarly journals Different plasticity of bud outgrowth at cauline and rosette nodes in Arabidopsis thaliana

2021 ◽  
Author(s):  
Franziska Fichtner ◽  
Francois F Barbier ◽  
Stephanie C Kerr ◽  
Caitlin Dudley ◽  
Pilar Cubas ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Flowering Time ◽  
Leaf Growth ◽  
Shoot Branching ◽  
Complex Mechanism ◽  
Light Regimes ◽  
Flowering Initiation ◽  
Model Plant Arabidopsis Thaliana ◽  
Rosette Leaf ◽  
Plant Arabidopsis Thaliana

Shoot branching is a complex mechanism in which secondary shoots grow from buds that are initiated from meristems established in leaf axils. The model plant Arabidopsis thaliana has a rosette leaf growth pattern in the vegetative stage. After flowering initiation, the main stem starts to elongate with the top leaf primordia developing into cauline leaves. Meristems in arabidopsis are initiated in the axils of rosette or cauline leaves, giving rise to rosette or cauline buds, respectively. Plasticity in the process of shoot branching is regulated by resource and nutrient availability as well as by plant hormones. However, few studies have attempted to test whether cauline and rosette branching are subject to the same plasticity. Here, we addressed this question by phenotyping cauline and rosette branching in three arabidopsis ecotypes and several arabidopsis mutants with varied shoot architectures. Our results show that there is no negative correlation between cauline and rosette branch numbers in arabidopsis, demonstrating that there is no trade-off between cauline and rosette bud outgrowth. Through investigation of the altered branching pattern of flowering pathway mutants and arabidopsis ecotypes grown in various photoperiods and light regimes, we further elucidated that the number of cauline branches is closely related to flowering time. The number or rosette branches has an enormous plasticity compared with cauline branches and is influenced by genetic background, flowering time, light intensity and temperature. Our data reveal different plasticity in the regulation of branching at rosette and cauline nodes and promote a framework for future branching analyses.

scholarly journals Combining growth-promoting genes leads to positive epistasis in Arabidopsis thaliana

eLife ◽  
2014 ◽  
Vol 3 ◽  
Author(s):  
Hannes Vanhaeren ◽  
Nathalie Gonzalez ◽  
Frederik Coppens ◽  
Liesbeth De Milde ◽  
Twiggy Van Daele ◽  
...  
Keyword(s):  
Cell Proliferation ◽  
Arabidopsis Thaliana ◽  
Cell Expansion ◽  
Transgenic Arabidopsis ◽  
Leaf Growth ◽  
Leaf Size ◽  
Additional Increase ◽  
Similar Mode ◽  
Growth Promoting ◽  
Synergistic Combinations

Several genes positively influence final leaf size in Arabidopsis when mutated or overexpressed. The connections between these growth regulators are still poorly understood although such knowledge would further contribute to understand the processes driving leaf growth. In this study, we performed a combinatorial screen with 13 transgenic Arabidopsis lines with an increased leaf size. We found that from 61 analyzed combinations, 39% showed an additional increase in leaf size and most resulted from a positive epistasis on growth. Similar to what is found in other organisms in which such an epistasis assay was performed, only few genes were highly connected in synergistic combinations as we observed a positive epistasis in the majority of the combinations with samba, BRI1OE or SAUR19OE. Furthermore, positive epistasis was found with combinations of genes with a similar mode of action, but also with genes which affect distinct processes, such as cell proliferation and cell expansion.

scholarly journals Arabidopsis thaliana MLK3, a Plant-Specific Casein Kinase 1, Negatively Regulates Flowering and Phosphorylates Histone H3 In Vitro

Genes ◽  
2020 ◽  
Vol 11 (3) ◽  
pp. 345 ◽  
Author(s):  
Junmei Kang ◽  
Huiting Cui ◽  
Shangang Jia ◽  
Wenwen Liu ◽  
Renjie Yu ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Flowering Time ◽  
Leaf Growth ◽  
Ectopic Expression ◽  
Casein Kinase ◽  
Kinase Assay ◽  
Casein Kinase 1 ◽  
Histone 3 ◽  
Morphological Defects

Arabidopsis thaliana MUT9-LIKE KINASES (MLKs), a family of the plant-specific casein kinase 1 (CK1), have been implicated collectively in multiple biological processes including flowering. Three of the four MLKs (MLK1/2/4) have been characterized, however, little is known about MLK3, the most divergent member of MLKs. Here, we demonstrated that disruption of MLK3 transcript in mlk3 caused early flowering with retarded leaf growth under long-day conditions. In vitro kinase assay showed the nuclear protein MLK3 phosphorylated histone 3 at threonine 3 (H3T3) and mutation of a conserved residue (K146R) abolished the catalytic activity. Ectopic expression of MLK3 but not MLK3(K146R) rescued the morphological defects of mlk3, indicating that an intact MLK3 is critical for maintaining proper flowering time. Transcriptomic analysis revealed that the floral repressor FLOWERING LOCUS C (FLC) was down-regulated significantly in mlk3, suggesting that MLK3 negatively regulates flowering. Hence, MLK3 plays a role in repressing the transition from vegetative to reproductive phase in A. thaliana. This study sheds light on the delicate control of flowering time by A. thaliana CK1 specific to the plant kingdom.

Sign in / Sign up

Export Citation Format

Share Document