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https://www.readbyqxmd.com/read/29755488/-medicago-truncatula-soc1-genes-are-up-regulated-by-environmental-cues-that-promote-flowering
#1
Jared B Fudge, Robyn H Lee, Rebecca E Laurie, Kirankumar S Mysore, Jiangqi Wen, James L Weller, Richard C Macknight
Like Arabidopsis thaliana , the flowering of the legume Medicago truncatula is promoted by long day (LD) photoperiod and vernalization. However, there are differences in the molecular mechanisms involved, with orthologs of two key Arabidopsis thaliana regulators, FLOWERING LOCUS C ( FLC ) and CONSTANS ( CO ), being absent or not having a role in flowering time function in Medicago . In Arabidopsis , the MADS-box transcription factor gene, SUPPRESSOR OF OVEREXPRESSION OF CONSTANS 1 ( AtSOC1 ), plays a key role in integrating the photoperiodic and vernalization pathways...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29736762/developmental-transcriptome-analysis-of-floral-transition-in-rosa-odorata-var-gigantea
#2
Xuelian Guo, Chao Yu, Le Luo, Huihua Wan, Ni Zhen, Yushu Li, Tangren Cheng, Jia Wang, Huitang Pan, Qixiang Zhang
Expression analyses revealed that floral transition of Rosa odorata var. gigantea is mainly regulated by VRN1, COLs, DELLA and KSN, with contributions by the effects of phytohormone and starch metabolism. Seasonal plants utilize changing environmental and developmental cues to control the transition from vegetative growth to flowering at the correct time of year. This study investigated global gene expression profiles at different developmental stages of Rosa odorata var. gigantea by RNA-sequencing, combined with phenotypic characterization and physiological changes...
May 7, 2018: Plant Molecular Biology
https://www.readbyqxmd.com/read/29736250/mikc-c-type-mads-box-genes-in-rosa-chinensis-the-remarkable-expansion-of-abcde-model-genes-and-their-roles-in-floral-organogenesis
#3
Jinyi Liu, Xiaodong Fu, Yuwei Dong, Jun Lu, Min Ren, Ningning Zhou, Changquan Wang
MIKCC -type MADS-box (MIKCC ) genes encode transcription factors that have crucial roles in controlling floral organogenesis and flowering time in plants. Although this gene family has been well characterized in many plant species, its evolutionary and comprehensive functional analysis in rose is lacking. In this study, 58 non-redundant MIKCC uni-transcripts were extensively identified from rose transcriptomes. Phylogenetic analysis placed these genes into 12 clades with their Arabidopsis and strawberry counterparts, and revealed that ABCDE model (including AP1/FUL, AP3/PI, AG, and SEP clades), and SOC1 and AGL6 clade genes have remarkably expanded in Rosa chinensis , whereas genes from the FLC and AGL17 clades were undetectable...
2018: Horticulture Research
https://www.readbyqxmd.com/read/29709075/reduction-of-the-geomagnetic-field-delays-arabidopsis-thaliana-flowering-time-through-downregulation-of-flowering-related-genes
#4
Chiara Agliassa, Ravishankar Narayana, Cinzia M Bertea, Christopher T Rodgers, Massimo E Maffei
Variations in magnetic field (MF) intensity are known to induce plant morphological and gene expression changes. In Arabidopsis thaliana Col-0, near-null magnetic field (NNMF, i.e., <100 nT MF) causes a delay in the transition to flowering, but the expression of genes involved in this response has been poorly studied. Here, we showed a time-course quantitative analysis of the expression of both leaf (including clock genes, photoperiod pathway, GA20ox, SVP, and vernalization pathway) and floral meristem (including GA2ox, SOC1, AGL24, LFY, AP1, FD, and FLC) genes involved in the transition to flowering in A...
April 30, 2018: Bioelectromagnetics
https://www.readbyqxmd.com/read/29643336/identification-of-morus-notabilis-mads-box-genes-and-elucidation-of-the-roles-of-mnmads33-during-endodormancy
#5
Yiwei Luo, Hongshun Li, Zhonghuai Xiang, Ningjia He
The MADS-box genes encode transcriptional regulators with various functions especially during floral development. A total of 54 putative Morus notabilis MADS-box genes (MnMADSs) were identified and phylogenetically classified as either type I (17 genes) or type II (37 genes). The detected genes included three FLOWERING LOCUS C-like (MnFLC-like) genes, MnMADS33, MnMADS50, and MnMADS7. MnFLC-like proteins could directly or indirectly repress promoter activity of the mulberry FLOWERING LOCUS T-like (MnFT) gene...
April 11, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29596826/hda9-interacts-with-the-promoters-of-soc1-and-agl24-involved-in-flowering-time-control-in-brassica-juncea
#6
Wei Jiang, Dayong Wei, Wenwen Zhou, Zhimin Wang, Qinglin Tang
HDA9 (a RPD3-like histone deacetylase) belongs to the histone deacetylase family which is involved in flowering time control through repression of AGL19 and FT, but it is still elusive that whether and how HDA9 directly interacts with flowering signal integrators of SOC1 and AGL24 in Brassica juncea. In this study, BjuHDA9 (a homologous HDA9) was cloned from B. juncea and ubiquitously expressed in root, stem, cauline leaf, flower bud and opening flower. BjuHDA9 was highly induced by short-day photoperiod. Yeast two-hybrid and pull-down assays demonstrated that BjuHDA9 could not interact with BjuSOC1 and BjuAGL24 proteins...
May 15, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29588173/pil5-represses-floral-transition-in-arabidopsis-under-long-day-conditions
#7
Minjie Wu, Dongdong Liu, Wakeel Abdul, Sakila Upreti, Yihua Liu, Ge Song, Junyu Wu, Bohan Liu, Yinbo Gan
PHYTOCHROME INTERACING FACTOR 3 LIKE 5 (PIL5), also named PHYTOCHROME INTERACTING FACTOR 1 (PIF1) is an important b-HLH transcription factor in Arabidopsis thaliana. Here we show that mutant of pil5-1 displays early flowering phenotype. We demonstrate that the expressions of the major flowering promoter genes [FLOWERING LOCUS T (FT), SUPPRESOR OF OVEREXPRESSION OF CO 1 (SOC1), and LEAFY (LFY)] are upregulated in the mutant of pil5-1. There is a significant increase of the mRNA of PIL5 in the mutants of co2-1, ft-10, soc1-2, and lfy-4...
May 15, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29397941/the-protein-j3-regulates-flowering-through-directly-interacting-with-the-promoter-of-soc1-in-brassica-juncea
#8
Wenwen Zhou, Dayong Wei, Wei Jiang, Zhimin Wang, Hebing Wang, Qinglin Tang
DNA J HOMOLOG 3 (J3) is a special transcriptional regulator in flowering time control, but the molecular mechanism of J3 in regulating flowering time has not been thoroughly revealed in B. juncea which is one important oilseed and vegetable crop. In this study, J3 gene was cloned from B. juncea (BjuJ3). Phylogenetic relationship analysis showed that the BjuJ3 had high amino acid sequence similarity (>93%) with other Brassica plants. The BjuJ3-transgenic tobacco plants exhibited early flowering, suggesting that BjuJ3 was an activator of flowering time...
February 19, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29273002/mining-and-expression-analysis-of-candidate-genes-involved-in-regulating-the-chilling-requirement-fulfillment-of-paeonia-lactiflora-hang-baishao
#9
Jiaping Zhang, Danqing Li, Xiaohua Shi, Dong Zhang, Shuai Qiu, Jianfen Wei, Jiao Zhang, Jianghua Zhou, Kaiyuan Zhu, Yiping Xia
BACKGROUND: The artificial enlargement of the planting area and ecological amplitude of ornamentals for horticultural and landscape applications are significant. Herbaceous peony (Paeonia lactiflora Pall.) is a world-famous ornamental with attractive and fragrant flowers and is mainly planted in temperate and cool areas. Comparatively higher winter temperatures in the subtropical and tropical Northern Hemisphere result in a deficit of chilling accumulation for bud dormancy release, which severely hinders "The southward plantation of herbaceous peony"...
December 22, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/29177001/a-cautionary-note-on-the-use-of-chromosome-conformation-capture-in-plants
#10
Suraj Jamge, Maike Stam, Gerco C Angenent, Richard G H Immink
Background: The chromosome conformation capture (3C) technique is a method to study chromatin interactions at specific genomic loci. Initially established for yeast the 3C technique has been adapted to plants in recent years in order to study chromatin interactions and their role in transcriptional gene regulation. As the plant scientific community continues to implement this technology, a discussion on critical controls, validations steps and interpretation of 3C data is essential to fully benefit from 3C in plants...
2017: Plant Methods
https://www.readbyqxmd.com/read/29027578/ectopic-expression-of-ugt84a2-delayed-flowering-by-indole-3-butyric-acid-mediated-transcriptional-repression-of-arf6-and-arf8-genes-in-arabidopsis
#11
Gui-Zhi Zhang, Shang-Hui Jin, Pan Li, Xiao-Yi Jiang, Yan-Jie Li, Bing-Kai Hou
Ectopic expression of auxin glycosyltransferase UGT84A2 in Arabidopsis can delay flowering through increased indole-3-butyric acid and suppressed transcription of ARF6, ARF8 and flowering-related genes FT, SOC1, AP1 and LFY. Auxins are critical regulators for plant growth and developmental processes. Auxin homeostasis is thus an important issue for plant biology. Here, we identified an indole-3-butyric acid (IBA)-specific glycosyltransferase, UGT84A2, and characterized its role in Arabidopsis flowering development...
December 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28992542/de-novo-transcriptome-sequencing-of-camellia-sasanqua-and-the-analysis-of-major-candidate-genes-related-to-floral-traits
#12
Hui Huang, En-Hua Xia, Hai-Bin Zhang, Qiu-Yang Yao, Li-Zhi Gao
Camellia sasanqua is one of the most famous horticultural plants in Camellia (Theaceae) due to its aesthetic appeal as landscape plant. Knowledge regarding the genetic basis of flowering time, floral aroma and color in C. sasanqua is limited, but is essential to breed new varieties with desired floral traits. Here, we described the de novo transcriptome of young leaves, flower buds and flowers of C. sasanqua. A total of 60,127 unigenes were functionally annotated based on the sequence similarity. After analysis, we found that two floral integrator genes, SOC1 and AP1, in flowering time pathway showed evidence of gene family expansion...
November 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28951734/overexpression-of-pvpin1-a-bamboo-homolog-of-pin1-type-parvulin-1-delays-flowering-time-in-transgenic-arabidopsis-and-rice
#13
Zhigang Zheng, Xiaoming Yang, Yaping Fu, Longfei Zhu, Hantian Wei, Xinchun Lin
Because of the long and unpredictable flowering period in bamboo, the molecular mechanism of bamboo flowering is unclear. Recent study showed that Arabidopsis PIN1-type parvulin 1 (Pin1At) is an important floral activator and regulates floral transition by facilitating the cis/trans isomerization of the phosphorylated Ser/Thr residues preceding proline motifs in suppressor of overexpression of CO 1 (SOC1) and agamous-like 24 (AGL24). Whether bamboo has a Pin1 homolog and whether it works in bamboo flowering are still unknown...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28812948/age-related-resistance-in-arabidopsis-thaliana-involves-the-mads-domain-transcription-factor-short-vegetative-phase-and-direct-action-of-salicylic-acid-on-pseudomonas-syringae
#14
Daniel C Wilson, Christine J Kempthorne, Philip Carella, David K Liscombe, Robin K Cameron
Arabidopsis thaliana exhibits a developmentally regulated disease-resistance response known as age-related resistance (ARR), a process that requires intercellular accumulation of salicylic acid (SA), which is thought to act as an antimicrobial agent. ARR is characterized by enhanced resistance to some pathogens at the late adult-vegetative and reproductive stages. While the transition to flowering does not cause the onset of ARR, both processes involve the MADS-domain transcription factor SHORT VEGETATIVE PHASE (SVP)...
November 2017: Molecular Plant-microbe Interactions: MPMI
https://www.readbyqxmd.com/read/28740501/hac1-and-haf1-histone-acetyltransferases-have-different-roles-in-uv-b-responses-in-arabidopsis
#15
Julieta P Fina, Fiorella Masotti, Sebastián P Rius, Franco Crevacuore, Paula Casati
Arabidopsis has 12 histone acetyltransferases grouped in four families: the GNAT/HAG, the MYST/HAM, the p300/CBP/HAC and the TAFII250/HAF families. We previously showed that ham1 and ham2 mutants accumulated higher damaged DNA after UV-B exposure than WT plants. In contrast, hag3 RNA interference transgenic plants showed less DNA damage and lower inhibition of plant growth by UV-B, and increased levels of UV-B-absorbing compounds. These results demonstrated that HAM1, HAM2, and HAG3 participate in UV-B-induced DNA damage repair and signaling...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28729527/comparative-transcriptome-analysis-of-the-floral-transition-in-rosa-chinensis-old-blush-and-r-odorata-var-gigantea
#16
Xuelian Guo, Chao Yu, Le Luo, Huihua Wan, Yushu Li, Jia Wang, Tangren Cheng, Huitang Pan, Qixiang Zhang
The floral transition is a crucial developmental event, but little is known about the underlying regulatory networks in seasonally and continuously flowering roses. In this study, we compared the genetic basis of flowering in two rose species, Rosa chinensis 'Old Blush', which flowers continuously, and R. odorata var. gigantea, which blooms in early spring. Gene ontology (GO) terms related to methylation, light reaction, and starch metabolism were enriched in R. odorata var. gigantea and terms associated with sugar metabolism were enriched in R...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28631168/the-function-of-osbhlh068-is-partially-redundant-with-its-homolog-atbhlh112-in-the-regulation-of-the-salt-stress-response-but-has-opposite-functions-to-control-flowering-in-arabidopsis
#17
Hung-Chi Chen, Vicki Hsieh-Feng, Pei-Chun Liao, Wan-Hsing Cheng, Li-Yu Liu, Yun-Wei Yang, Ming-Hsin Lai, Men-Chi Chang
The homologous genes OsbHLH068 and AtbHLH112 have partially redundant functions in the regulation of the salt stress response but opposite functions to control flowering in Arabidopsis. The transcription factor (TF) basic/Helix-Loop-Helix (bHLH) is important for plant growth, development, and stress responses. OsbHLH068, which is a homologous gene of AtbHLH112 that is up-regulated under drought and salt stresses, as indicated by previous microarray data analysis. However, the intrinsic function of OsbHLH068 remains unknown...
July 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28611810/evolutionary-analysis-of-mikc-c-type-mads-box-genes-in-gymnosperms-and-angiosperms
#18
Fei Chen, Xingtan Zhang, Xing Liu, Liangsheng Zhang
MIKC(c)-type MADS-box genes encode transcription factors that control floral organ morphogenesis and flowering time in flowering plants. Here, in order to determine when the subfamilies of MIKC(c) originated and their early evolutionary trajectory, we sampled and analyzed the genomes and large-scale transcriptomes representing all the orders of gymnosperms and basal angiosperms. Through phylogenetic inference, the MIKC(c)-type MADS-box genes were subdivided into 14 monophyletic clades. Among them, the gymnosperm orthologs of AGL6, SEP, AP1, GMADS, SOC1, AGL32, AP3/PI, SVP, AGL15, ANR1, and AG were identified...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28604637/gibberellic-acid-signaling-is-required-to-induce-flowering-of-chrysanthemums-grown-under-both-short-and-long-days
#19
Bin Dong, Ye Deng, Haibin Wang, Ri Gao, Githeng'u K Stephen, Sumei Chen, Jiafu Jiang, Fadi Chen
Flower bud formation and flowering in chrysanthemums occur under short day conditions (SD), but the molecular basis for the switch to reproductive growth is less well understood than in model plants. Here, a spontaneous mutant able to flower under long days is described. In an attempt to reveal the pathway(s) involved in the formation of flower buds under contrasting daylengths, transcriptome sequencing was carried out in plants grown both under SD and long day conditions (LD). A number of differentially transcribed genes involved in the various known flowering pathways were identified...
June 12, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28546125/molecular-cloning-and-functional-characterization-of-coft1-a-homolog-of-flowering-locus-t-ft-from-camellia-oleifera
#20
Hengjiu Lei, Shuchai Su, Luyi Ma, Yue Wen, Xiangnan Wang
FLOWERING LOCUS T (FT) is an important integrator of flowering genetic pathways and plays crucial roles in flowering transition. The tea-oil tree (Camellia oleifera Abel.) is a valuable woody oil crop, but the molecular mechanisms controlling flowering are still unclear. In this study, a FT-like gene, CoFT1, was isolated and characterized from C. oleifera. The CoFT1 protein was localized in the nucleus and cytoplasm of Arabidopsis protoplasts, and exhibited no transactivation activity in yeast cells. CoFT1 was highly expressed in mature leaves and reproductive organs, such as flower buds, flowers, flower organs, and young fruits...
August 30, 2017: Gene
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