scholarly journals Beyond flowering time: diverse roles of an APETALA2‐like transcription factor in shoot architecture and perennial traits

2020 ◽  
Vol 229 (1) ◽  
pp. 444-459
Author(s):  
Yanhao Zhou ◽  
Xiangchao Gan ◽  
Natanael Viñegra de la Torre ◽  
Ulla Neumann ◽  
Maria C. Albani
Keyword(s):  
Transcription Factor ◽  
Flowering Time ◽  
Shoot Architecture

scholarly journals Transcriptome profiling of developing leaf and shoot apices to reveal the molecular mechanism and co-expression genes responsible for the wheat heading date

BMC Genomics ◽  
2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Yuxin Yang ◽  
Xueying Zhang ◽  
Lifen Wu ◽  
Lichao Zhang ◽  
Guoxiang Liu ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Flowering Time ◽  
Heading Date ◽  
Yield Component ◽  
Potential Candidate ◽  
Rna Seq ◽  
Nucleotide Synthesis ◽  
Light Reaction ◽  
Grain Number Per Spike ◽  
Double Ridge

Abstract Background Wheat is one of the most widely planted crops worldwide. The heading date is important for wheat environmental adaptability, as it not only controls flowering time but also determines the yield component in terms of grain number per spike. Results In this research, homozygous genotypes with early and late heading dates derived from backcrossed progeny were selected to conduct RNA-Seq analysis at the double ridge stage (W2.0) and androgynous primordium differentiation stage (W3.5) of the leaf and apical meristem, respectively. In total, 18,352 differentially expressed genes (DEGs) were identified, many of which are strongly associated with wheat heading date genes. Gene Ontology (GO) enrichment analysis revealed that carbohydrate metabolism, trehalose metabolic process, photosynthesis, and light reaction are closely related to the flowering time regulation pathway. Based on MapMan metabolic analysis, the DEGs are mainly involved in the light reaction, hormone signaling, lipid metabolism, secondary metabolism, and nucleotide synthesis. In addition, 1,225 DEGs were annotated to 45 transcription factor gene families, including LFY, SBP, and MADS-box transcription factors closely related to flowering time. Weighted gene co-expression network analysis (WGCNA) showed that 16, 336, 446, and 124 DEGs have biological connections with Vrn1-5 A, Vrn3-7B, Ppd-1D, and WSOC1, respectively. Furthermore, TraesCS2D02G181400 encodes a MADS-MIKC transcription factor and is co-expressed with Vrn1-5 A, which indicates that this gene may be related to flowering time. Conclusions RNA-Seq analysis provided transcriptome data for the wheat heading date at key flower development stages of double ridge (W2.0) and androgynous primordium differentiation (W3.5). Based on the DEGs identified, co-expression networks of key flowering time genes in Vrn1-5 A, Vrn3-7B, WSOC1, and Ppd-1D were established. Moreover, we discovered a potential candidate flowering time gene, TraesCS2D02G181400. Taken together, these results serve as a foundation for further study on the regulatory mechanism of the wheat heading date.

scholarly journals Potential transceptor AtNRT1.13 modulates shoot architecture and flowering time in a nitrate-dependent manner

2021 ◽  
Author(s):  
Hui-Yu Chen ◽  
Shan-Hua Lin ◽  
Ling-Hsin Cheng ◽  
Jeng-Jong Wu ◽  
Yi-Chen Lin ◽  
...  
Keyword(s):  
Flowering Time ◽  
Nitrate Transport ◽  
Dependent Manner ◽  
Transport Activity ◽  
Node Number ◽  
Shoot Architecture ◽  
Glucuronidase Reporter ◽  
Uptake Activity ◽  
Delayed Flowering ◽  
Severe Growth

Abstract Compared with root development regulated by external nutrients, less is known about how internal nutrients are monitored to control plasticity of shoot development. In this study, we characterize an Arabidopsis thaliana transceptor, NRT1.13 (NPF4.4), of the NRT1/PTR/NPF family. Different from most NRT1 transporters, NRT1.13 does not have the conserved proline residue between transmembrane domains 10 and 11; an essential residue for nitrate transport activity in CHL1/NRT1.1/NPF6.3. As expected, when expressed in oocytes, NRT1.13 showed no nitrate transport activity. However, when Ser 487 at the corresponding position was converted back to proline, NRT1.13 S487P regained nitrate uptake activity, suggesting that wild-type NRT1.13 cannot transport nitrate but can bind it. Subcellular localization and β-glucuronidase reporter analyses indicated that NRT1.13 is a plasma membrane protein expressed at the parenchyma cells next to xylem in the petioles and the stem nodes. When plants were grown with a normal concentration of nitrate, nrt1.13 showed no severe growth phenotype. However, when grown under low-nitrate conditions, nrt1.13 showed delayed flowering, increased node number, retarded branch outgrowth, and reduced lateral nitrate allocation to nodes. Our results suggest that NRT1.13 is required for low-nitrate acclimation and that internal nitrate is monitored near the xylem by NRT1.13 to regulate shoot architecture and flowering time.

scholarly journals Dlf1, a WRKY Transcription Factor, Is Involved in the Control of Flowering Time and Plant Height in Rice

PLoS ONE ◽  
2014 ◽  
Vol 9 (7) ◽  
pp. e102529 ◽  
Author(s):  
Yuhui Cai ◽  
Xujun Chen ◽  
Ke Xie ◽  
Qikai Xing ◽  
Yawen Wu ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Flowering Time ◽  
Plant Height ◽  
Wrky Transcription Factor

scholarly journals Divergent Roles of a Pair of Homologous Jumonji/Zinc-Finger–Class Transcription Factor Proteins in the Regulation of Arabidopsis Flowering Time

2004 ◽  
Vol 16 (10) ◽  
pp. 2601-2613 ◽  
Author(s):  
Bosl Noh ◽  
Seung-Hee Lee ◽  
Hyun-Jin Kim ◽  
Gibum Yi ◽  
Eun-Ah Shin ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Flowering Time ◽  
Zinc Finger ◽  
Transcription Factor Proteins

The transcriptional activity of a temperature-sensitive transcription factor module is associated with pollen shedding time in pine

2019 ◽  
Vol 39 (7) ◽  
pp. 1173-1186
Author(s):  
Shi-Hui Niu ◽  
Shuang-Wei Liu ◽  
Jing-Jing Ma ◽  
Fang-Xu Han ◽  
Yue Li ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Flowering Time ◽  
Cold Hardiness ◽  
Transcriptional Activity ◽  
Molecular Mechanisms ◽  
Early Spring ◽  
Temperature Sensitive ◽  
Factor Module ◽  
Pine Trees ◽  
Growth Activity

Abstract It has long been known that the pollen shedding time in pine trees is correlated with temperature, but the molecular basis for this has remained largely unknown. To better understand the mechanisms driving temperature response and to identify the hub regulators of pollen shedding time regulation in Pinus tabuliformis Carr., we identified a set of temperature-sensitive genes by carrying out a comparative transcriptome analysis using six early pollen shedding trees (EPs) and six late pollen shedding trees (LPs) during mid-winter and at three consecutive time points in early spring. We carried out a weighted gene co-expression network analysis and constructed a transcription factor (TF) collaborative network, merging the common but differentially expressed TFs of the EPs and LPs into a joint network. We found five hub genes in the core TF module whose expression was rapidly induced by low temperatures. The transcriptional activity of this TF module was strongly associated with pollen shedding time, and likely to produce the fine balance between cold hardiness and growth activity in early spring. We confirmed the key role of temperature in regulating flowering time and identified a transcription factor module associated with pollen shedding time in P. tabuliformis. This suggests that repression of growth activity by repressors is the main mechanism balancing growth and cold hardiness in pine trees in early spring. Our results provide new insights into the molecular mechanisms regulating seasonal flowering time in pines.

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