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https://www.readbyqxmd.com/read/28382045/genome-wide-identification-of-the-mikc-type-mads-box-gene-family-in-gossypium-hirsutum-l-unravels-their-roles-in-flowering
#1
Zhongying Ren, Daoqian Yu, Zhaoen Yang, Changfeng Li, Ghulam Qanmber, Yi Li, Jie Li, Zhao Liu, Lili Lu, Lingling Wang, Hua Zhang, Quanjia Chen, Fuguang Li, Zuoren Yang
Cotton is one of the major world oil crops. Cottonseed oil meets the increasing demand of fried food, ruminant feed, and renewable bio-fuels. MADS intervening keratin-like and C-terminal (MIKC)-type MADS-box genes encode transcription factors that have crucial roles in various plant developmental processes. Nevertheless, this gene family has not been characterized, nor its functions investigated, in cotton. Here, we performed a comprehensive analysis of MIKC-type MADS genes in the tetraploid Gossypium hirsutum L...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28362994/identification-of-genes-related-to-floral-organ-development-in-pak-choi-by-expression-profiling
#2
H X Song, A M Ping, M X Sun, X H Qi, M Y Gao, X Y Xu, Z J Zhu, M L Li, L P Hou
Pak choi is a highly nutritious vegetable that is widely grown in China, Southeast Asia, and other parts of the world. Because it reproduces by seed, it is very important to understand the mechanism of floral organ development. Therefore, using the Chinese cabbage genome as a reference, this study analyzed the expression profiles of shoot apex genes at flower bud differentiation stages 1 and 5, in order to identify genes related to floral organ development. The results showed that the proportion of mapped genes was high, with 84...
March 30, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28361995/comparative-transcriptomic-analysis-of-vernalization-and-cytokinin-induced-floral-transition-in-dendrobium-nobile
#3
Zhenzhen Wen, Wenzhong Guo, Jinchi Li, Haisheng Lin, Chunmei He, Yunquan Liu, Qunyu Zhang, Wei Liu
Vernalization is required for floral initiation in Dendrobium. Interestingly, those beneficial effects can also be achieved by exogenous cytokinin application in greenhouses. Thus, an as yet unknown crosstalk/interaction may exist between vernalization and cytokinin signaling pathways. In this study, we showed, by de novo transcriptome assembly using RNA-seq data from both vegetative and reproductive tissue samples, that some floral transition-related genes-DnVRN1, FT, SOC1, LFY and AP1-were differentially expressed in low-temperature-challenged (LT) or thidiazuron (TDZ)-treated plants, compared to those mock-treated (CK)...
March 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28261246/possible-role-of-mads-affecting-flowering-3-and-b-box-domain-protein-19-in-flowering-time-regulation-of-arabidopsis-mutants-with-defects-in-nonsense-mediated-mrna-decay
#4
Zeeshan Nasim, Muhammad Fahim, Ji Hoon Ahn
Eukaryotic cells use nonsense-mediated mRNA decay (NMD) to clear aberrant mRNAs from the cell, thus preventing the accumulation of truncated proteins. In Arabidopsis, two UP-Frameshift (UPF) proteins, UPF1 and UPF3, play a critical role in NMD. Although deficiency of UPF1 and UPF3 leads to various developmental defects, little is known about the mechanism underlying the regulation of flowering time by NMD. Here, we showed that the upf1-5 and upf3-1 mutants had a late-flowering phenotype under long-day conditions and the upf1-5 upf3-1 double mutants had an additive effect in delaying flowering time...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28096189/suppressor-of-overexpression-of-co-1-negatively-regulates-dark-induced-leaf-degreening-and-senescence-by-directly-repressing-pheophytinase-and-other-senescence-associated-genes-in-arabidopsis
#5
Junyi Chen, Xiaoyu Zhu, Jun Ren, Kai Qiu, Zhongpeng Li, Zuokun Xie, Jiong Gao, Xin Zhou, Benke Kuai
Although the biochemical pathway of chlorophyll (Chl) degradation has been largely elucidated, how Chl is rapidly yet coordinately degraded during leaf senescence remains elusive. Pheophytinase (PPH) is the enzyme for catalyzing the removal of the phytol group from pheophytin a, and PPH expression is significantly induced during leaf senescence. To elucidate the transcriptional regulation of PPH, we used a yeast (Saccharomyces cerevisiae) one-hybrid system to screen for its trans-regulators. SUPPRESSOR OF OVEREXPRESSION OF CO 1 (SOC1), a key flowering pathway integrator, was initially identified as one of the putative trans-regulators of PPH After dark treatment, leaves of an SOC1 knockdown mutant (soc1-6) showed an accelerated yellowing phenotype, whereas those of SOC1-overexpressing lines exhibited a partial stay-green phenotype...
March 2017: Plant Physiology
https://www.readbyqxmd.com/read/28089951/bzr1-positively-regulates-freezing-tolerance-via-cbf-dependent-and-cbf-independent-pathways-in-arabidopsis
#6
Hui Li, Keyi Ye, Yiting Shi, Jinkui Cheng, Xiaoyan Zhang, Shuhua Yang
Cold stress is a major environmental factor that adversely affects plant growth and development. The C-repeat binding factor/DRE binding factor 1 (CBF/DREB1) transcriptional regulatory cascade has been shown to play important roles in plant response to cold. Here we demonstrate that two key components of brassinosteroid (BR) signaling modulate freezing tolerance of Arabidopsis plants. The loss-of-function mutant of the GSK3-like kinases involved in BR signaling, bin2-3 bil1 bil2, showed increased freezing tolerance, whereas overexpression of BIN2 resulted in hypersensitivity to freezing stress under both non-acclimated and acclimated conditions...
April 3, 2017: Molecular Plant
https://www.readbyqxmd.com/read/28028164/thermoperiodic-control-of-floral-induction-involves-modulation-of-the-diurnal-flowering-locus-t-expression-pattern
#7
Micael Wendell, Linda Ripel, YeonKyeong Lee, Odd Arne Rognli, Sissel Torre, Jorunn E Olsen
Thermoperiodism is defined as the ability to discriminate between day temperature (DT) and night temperature (NT). Our aim was to shed light on the mechanistic basis of thermoperiodic floral induction with acceleration under lower DT than NT compared with other DT-NT combinations at the same average daily temperature (ADT), a response exploited in temperate area greenhouses. Arabidopsis thaliana floral pathway mutants and a lhy circadian clock mutant as well as the expression of floral integrators and LHY (LATE ELONGATED HYPOCOTYL) were studied under different DT-NT combinations, all at the same ADT...
December 27, 2016: Plant & Cell Physiology
https://www.readbyqxmd.com/read/27968983/aprf1-promotes-flowering-under-long-days-in-arabidopsis-thaliana
#8
Georgios Kapolas, Despoina Beris, Efthimia Katsareli, Pantelis Livanos, Aris Zografidis, Andreas Roussis, Dimitra Milioni, Kosmas Haralampidis
Arabidopsis thaliana flowering time mutants revealed the function of numerous genes that regulate the transition from vegetative to reproductive growth. Analyses of their loci have shown that many of them act as chromatin modifiers. In this study, a combination of molecular and genetic approaches have been implemented, to characterize the function of APRF1 (ANTHESIS POMOTING FACTOR 1) gene in A. thaliana and to investigate its role in plant development. APRF1 encodes for a low molecular weight nuclear WDR protein which displays functional homology to the Swd2 protein, an essential subunit of the yeast histone methylation COMPASS complex...
December 2016: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/27965680/molecular-cloning-characterization-and-expression-of-misoc1-a-homolog-of-the-flowering-gene-suppressor-of-overexpression-of-constans1-from-mango-mangifera-indica-l
#9
Junya Wei, Debing Liu, Guoyin Liu, Jie Tang, Yeyuan Chen
MADS-box transcription factor plays a crucial role in plant development, especially controlling the formation and development of floral organs. Mango (Mangifera indica L) is an economically important fruit crop, but its molecular control of flowering is largely unknown. To better understand the molecular basis of flowering regulation in mango, we isolated and characterized the MiSOC1, a putative mango orthologs for the Arabidopsis SUPPRESSOR OF OVEREXPRESSION OF CONSTANS1/AGAMOUS-LIKE 20 (SOC1/AGL20) with homology-based cloning and RACE...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27925396/arabidopsis-sumo-protease-asp1-positively-regulates-flowering-time-partially-through-regulating-flc-stability%C3%A2
#10
Xiangxiong Kong, Xi Luo, Gao-Ping Qu, Peng Liu, Jing Bo Jin
The initiation of flowering is tightly regulated by the endogenous and environment signals, which is crucial for the reproductive success of flowering plants. It is well known that autonomous and vernalization pathways repress transcription of FLOWERING LOCUS C (FLC), a focal floral repressor, but how its protein stability is regulated remains largely unknown. Here, we found that mutations in a novel Arabidopsis SUMO protease 1 (ASP1) resulted in a strong late-flowering phenotype under long-days, but to a lesser extent under short-days...
January 2017: Journal of Integrative Plant Biology
https://www.readbyqxmd.com/read/27775866/characterising-genes-associated-with-flowering-time-in-carrot-daucus-carota-l-using-transcriptome-analysis
#11
C-G Ou, J-H Mao, L-J Liu, C-J Li, H-F Ren, Z-W Zhao, F-Y Zhuang
Carrot is generally regarded as a biennial plant with an obligatory vernalization requirement. Early spring cultivation makes plants vulnerable to premature bolting, which results in a loss of commercial value. However, our knowledge of flowering time genes and flowering mechanisms in carrot remain limited. Bolting behavior of D. carota ssp. carota 'Songzi', a wild species sensitive to flower induction by vernalization and photoperiod, and orange cultivar 'Amsterdam forcing', and their offspring were investigated in different growing conditions...
March 2017: Plant Biology
https://www.readbyqxmd.com/read/27733858/leaf-like-sepals-induced-by-ectopic-expression-of-a-short-vegetative-phase-svp-like-mads-box-gene-from-the-basal-eudicot-epimedium-sagittatum
#12
Zhineng Li, Shaohua Zeng, Yanbang Li, Mingyang Li, Erik Souer
Epimedium L. (Berberidaceae, Ranales), a perennial traditional Chinese medicinal herb, has become a new popular landscape plant for ground cover and pot culture in many countries based on its excellent ornamental characteristics and, distinctive and diverse floral morphology. However, little is known about the molecular genetics of flower development in Epimedium sagittatum. Here, we describe the characterization of EsSVP that encodes a protein sharing 68, 54, and 35% similarity with SVP, AGAMOUS-like 24 (AGL24) and SUPPRESSOR OF OVEREXPRESSION OF CONSTANS 1 (SOC1) in Arabidopsis, respectively...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27733440/aba-dependent-control-of-gigantea-signalling-enables-drought-escape-via-up-regulation-of-flowering-locus-t-in-arabidopsis-thaliana
#13
Matteo Riboni, Alice Robustelli Test, Massimo Galbiati, Chiara Tonelli, Lucio Conti
One strategy deployed by plants to endure water scarcity is to accelerate the transition to flowering adaptively via the drought escape (DE) response. In Arabidopsis thaliana, activation of the DE response requires the photoperiodic response gene GIGANTEA (GI) and the florigen genes FLOWERING LOCUS T (FT) and TWIN SISTER OF FT (TSF). The phytohormone abscisic acid (ABA) is also required for the DE response, by promoting the transcriptional up-regulation of the florigen genes. The mode of interaction between ABA and the photoperiodic genes remains obscure...
December 2016: Journal of Experimental Botany
https://www.readbyqxmd.com/read/27598690/gibberellins-are-involved-in-effect-of-near-null-magnetic-field-on-arabidopsis-flowering
#14
Chunxiao Xu, Yang Yu, Yuxia Zhang, Yue Li, Shufeng Wei
We previously found that flowering of Arabidopsis was suppressed by near-null magnetic field, which was related to the modification of cryptochrome. To disclose the physiological mechanism of this effect, we detected gibberellin (GA) levels and expressions of GA biosynthetic and signaling genes in wild type Arabidopsis plants and cryptochrome double mutant, cry1/cry2, grown in near-null magnetic field. We found that levels of GA4 , GA9 , GA34 , and GA51 in wild type plants in near-null magnetic field were significantly decreased compared with local geomagnetic field controls...
January 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/27457125/flowering-time-regulated-genes-in-maize-include-the-transcription-factor-zmmads1
#15
Philipp Alter, Susanne Bircheneder, Liang-Zi Zhou, Urte Schlüter, Manfred Gahrtz, Uwe Sonnewald, Thomas Dresselhaus
Flowering time (FTi) control is well examined in the long-day plant Arabidopsis (Arabidopsis thaliana), and increasing knowledge is available for the short-day plant rice (Oryza sativa). In contrast, little is known in the day-neutral and agronomically important crop plant maize (Zea mays). To learn more about FTi and to identify novel regulators in this species, we first compared the time points of floral transition of almost 30 maize inbred lines and show that tropical lines exhibit a delay in flowering transition of more than 3 weeks under long-day conditions compared with European flint lines adapted to temperate climate zones...
September 2016: Plant Physiology
https://www.readbyqxmd.com/read/27244670/sense-of-coherence-and-periodontal-health-outcomes
#16
COMPARATIVE STUDY
Renata Magalhães Cyrino, Fernando Oliveira Costa, José Roberto Cortelli, Sheila Cavalca Cortelli, Luís Otávio Miranda Cota
OBJECTIVE: Sense of Coherence (SOC) has been associated with perceived oral health measures, but the contribution of SOC to clinical measures is still unclear. The aim of the present cross-sectional study was to evaluate the potential association between periodontal health outcomes, such as periodontal clinical parameters and perceived periodontal health, and SOC. MATERIALS AND METHODS: The study sample comprised 276 individuals, aged 18-60 years, from Belo Horizonte, Brazil...
July 2016: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/27208260/maize-oxidative-stress2-homologs-enhance-cadmium-tolerance-in-arabidopsis-through-activation-of-a-putative-sam-dependent-methyltransferase-gene
#17
Lilong He, Xiaoling Ma, Zhenzhen Li, Zhengli Jiao, Yongqing Li, David W Ow
Previously the Arabidopsis (Arabidopsis thaliana) zinc finger protein OXIDATIVE STRESS2 (AtOXS2) and four OXS2-like (AtO2L) family members were described to play a role in stress tolerance and stress escape. For stress escape, SOC1 was a target of AtOXS2. However, for stress tolerance, the downstream targets were not identified. We cloned two OXS2 homolog genes from sweet corn, ZmOXS2b and ZmO2L1 Both genes are transiently inducible by Cd treatment. When expressed in Arabidopsis, each enhances tolerance against cadmium...
July 2016: Plant Physiology
https://www.readbyqxmd.com/read/27200066/prevalent-exon-intron-structural-changes-in-the-apetala1-fruitfull-sepallata-agamous-like6-and-flowering-locus-c-mads-box-gene-subfamilies-provide-new-insights-into-their-evolution
#18
Xianxian Yu, Xiaoshan Duan, Rui Zhang, Xuehao Fu, Lingling Ye, Hongzhi Kong, Guixia Xu, Hongyan Shan
AP1/FUL, SEP, AGL6, and FLC subfamily genes play important roles in flower development. The phylogenetic relationships among them, however, have been controversial, which impedes our understanding of the origin and functional divergence of these genes. One possible reason for the controversy may be the problems caused by changes in the exon-intron structure of genes, which, according to recent studies, may generate non-homologous sites and hamper the homology-based sequence alignment. In this study, we first performed exon-by-exon alignments of these and three outgroup subfamilies (SOC1, AG, and STK)...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27177585/domestication-driven-gossypium-profilin-1-ghprf1-gene-transduces-early-flowering-phenotype-in-tobacco-by-spatial-alteration-of-apical-floral-meristem-related-gene-expression
#19
Dhananjay K Pandey, Bhupendra Chaudhary
BACKGROUND: Plant profilin genes encode core cell-wall structural proteins and are evidenced for their up-regulation under cotton domestication. Notwithstanding striking discoveries in the genetics of cell-wall organization in plants, little is explicit about the manner in which profilin-mediated molecular interplay and corresponding networks are altered, especially during cellular signalling of apical meristem determinacy and flower development. RESULTS: Here we show that the ectopic expression of GhPRF1 gene in tobacco resulted in the hyperactivation of apical meristem and early flowering phenotype with increased flower number in comparison to the control plants...
2016: BMC Plant Biology
https://www.readbyqxmd.com/read/27134142/multi-layered-regulation-of-spl15-and-cooperation-with-soc1-integrate-endogenous-flowering-pathways-at-the-arabidopsis-shoot-meristem
#20
Youbong Hyun, René Richter, Coral Vincent, Rafael Martinez-Gallegos, Aimone Porri, George Coupland
Flowering is initiated in response to environmental and internal cues that are integrated at the shoot apical meristem (SAM). We show that SPL15 coordinates the basal floral promotion pathways required for flowering of Arabidopsis in non-inductive environments. SPL15 directly activates transcription of the floral regulators FUL and miR172b in the SAM during floral induction, whereas its paralog SPL9 is expressed later on the flanks of the SAM. The capacity of SPL15 to promote flowering is regulated by age through miR156, which targets SPL15 mRNA, and gibberellin (GA), which releases SPL15 from DELLAs...
May 9, 2016: Developmental Cell
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