keyword
MENU ▼
Read by QxMD icon Read
search

R2r3 myb

keyword
https://www.readbyqxmd.com/read/28733420/sg2-type-r2r3-myb-transcription-factor-myb15-controls-defense-induced-lignification-and-basal-immunity-in-arabidopsis
#1
William R Chezem, Altamash Memon, Fu-Shuang Li, Jing-Ke Weng, Nicole Kho Clay
Lignification of cell wall appositions is a conserved basal defense mechanism in the plant innate immune response. However, the genetic pathway controlling defense-induced lignification remains unknown. Here, we demonstrate the Arabidopsis thaliana SG2-type R2R3-MYB transcription factor MYB15 as a regulator of defense-induced lignification and basal immunity. Loss of MYB15 reduces the content but not the composition of defense-induced lignin, whereas constitutive expression of MYB15 increases lignin content independently of immune activation...
July 21, 2017: Plant Cell
https://www.readbyqxmd.com/read/28732175/genome-wide-identification-functional-prediction-and-evolutionary-analysis-of-r2r3-myb-superfamily-in-brassica-napus
#2
Ali Hajiebrahimi, Hajar Owji, Shiva Hemmati
R2R3-MYBs are important transcription factors (TFs) in planta, involved in development and various stress conditions. Phylogenetic analysis showed the presence of 249 R2R3-MYB TFs in Brassica napus called BnaR2R3-MYBs, clustered into 38 clades. BnaR2R3-MYBs were distributed on 19 chromosomes of B. napus. Sixteen gene clusters were identified. BnaR2R3-MYBs were characterized by motif prediction, gene structure analysis and gene ontology. Evolutionary analysis revealed that BnaR2R3-MYBs are mainly formed as a result of whole genome duplication...
July 21, 2017: Genome Génome / Conseil National de Recherches Canada
https://www.readbyqxmd.com/read/28726305/myb30-transcription-factor-regulates-oxidative-and-heat-stress-responses-through-annexin-mediated-cytosolic-calcium-signaling-in-arabidopsis
#3
Chancan Liao, Yuan Zheng, Yan Guo
Cytosolic calcium signaling is critical for regulating downstream responses in plants encountering unfavorable environmental conditions. In a genetic screen for Arabidopsis thaliana mutants defective in stress-induced cytosolic free Ca(2+) ([Ca(2+) ]cyt ) elevations, we identified the R2R3-MYB transcription factor MYB30 as a regulator of [Ca(2+) ]cyt in response to H2 O2 and heat stresses. Plants lacking MYB30 protein exhibited greater elevation of [Ca(2+) ]cyt in response to oxidative and heat stimuli. Real-time reverse transcription-polymerase chain reaction (RT-PCR) results indicated that the expression of a number of ANNEXIN (ANN) genes, which encode Ca(2+) -regulated membrane-binding proteins modulating cytosolic calcium signatures, were upregulated in myb30 mutants...
July 20, 2017: New Phytologist
https://www.readbyqxmd.com/read/28722263/ftsad2-and-ftjaz1-regulate-activity-of-the-ftmyb11-transcription-repressor-of-the-phenylpropanoid-pathway-in-fagopyrum-tataricum
#4
Meiliang Zhou, Zhanmin Sun, Mengqi Ding, Maria D Logacheva, Ivan Kreft, Dan Wang, Mingli Yan, Jirong Shao, Yixiong Tang, Yanmin Wu, Xuemei Zhu
Little is known about the molecular mechanism of the R2R3-MYB transcriptional repressors involved in plant phenylpropanoid metabolism. Here, we describe one R2R3-type MYB repressor, FtMYB11 from Fagopyrum tataricum. It contains the SID-like motif GGDFNFDL and it is regulated by both the importin protein 'Sensitive to ABA and Drought 2' (SAD2) and the jasmonates signalling cascade repressor JAZ protein. Yeast two hybrid and bimolecular fluorescence complementation assays demonstrated that FtMYB11 interacts with SAD2 and FtJAZ1...
July 19, 2017: New Phytologist
https://www.readbyqxmd.com/read/28701702/the-influence-of-postharvest-uv-c-treatment-on-anthocyanin-biosynthesis-in-fresh-cut-red-cabbage
#5
Jie Wu, Wen Liu, Li Yuan, Wen-Qiang Guan, Charles S Brennan, Yang-Yong Zhang, Jie Zhang, Zhi-Dong Wang
Red cabbage (Brassica oleracea L. var. capitata f. rubra DC.) is a fresh edible vegetable consumed globally that contains high levels of antioxidant compounds including anthocyanins. In this study, fresh-cut red cabbage was treated with different Ultraviolet-C (UV-C) dosages. Fifteen cyanidin derivatives were observed in UV-C treated fresh-cut red cabbage; four of these were anthocyanins absent in control samples. The optimum dose of UV-C for enhancing total anthocyanin content in fresh-cut red cabbage was 3...
July 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28698552/smmyb36-a-novel-r2r3-myb-transcription-factor-enhances-tanshinone-accumulation-and-decreases-phenolic-acid-content-in-salvia-miltiorrhiza-hairy-roots
#6
Kai Ding, Tianlin Pei, Zhengqing Bai, Yanyan Jia, Pengda Ma, Zongsuo Liang
Phenolic acids and tanshinones are two major bioactive components in Salvia miltiorrhiza Bunge. A novel endogenous R2R3-MYB transcription factor, SmMYB36, was identified in this research. This transcript factor can simultaneously influence the content of two types of components in SmMYB36 overexpression hairy roots. SmMYB36 was mainly localized in the nucleus of onion epidermis and it has transactivation activity. The overexpression of SmMYB36 promoted tanshinone accumulation but inhibited phenolic acid and flavonoid biosynthesis in Salvia miltiorrhiza hairy roots...
July 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28691160/the-cycloidea-radialis-module-regulates-petal-shape-and-pigmentation-leading-to-bilateral-corolla-symmetry-in-torenia-fournieri-linderniaceae
#7
Shihao Su, Wei Xiao, Wuxiu Guo, Xinran Yao, Junqing Xiao, Ziqing Ye, Na Wang, Keyuan Jiao, Mengqi Lei, Qincheng Peng, Xiaohe Hu, Xia Huang, Da Luo
The diverse pigmentation patterns of flower corollas probably result from pollinator-mediated selection. Previous studies demonstrated that R2R3-MYB factors may have been recruited in the regulation of corolla pigmentation. However, how R2R3-MYBs became so diverse in their regulation of different pigmentation patterns remains unclear. Here, we studied a Lamiales species, Torenia fournieri, which has elaborate zygomorphic flowers with dorsal-ventral asymmetries in corolla pigmentation. We found recent gene duplication events in CYCLOIDEA-like (CYC-like) and RADIALIS-like (RAD-like) genes, and functionally analyzed three dorsal-specific expression factors: TfCYC1, TfCYC2, and TfRAD1...
July 10, 2017: New Phytologist
https://www.readbyqxmd.com/read/28690624/transcriptome-wide-identification-of-novel-uv-b-and-light-modulated-flavonol-pathway-genes-controlled-by-vvimybf1
#8
Stefan Czemmel, Janine Höll, Rodrigo Loyola, Patricio Arce-Johnson, José Antonio Alcalde, José Tomás Matus, Jochen Bogs
Flavonols constitute a group of flavonoids with important photoprotective roles in plants. In addition, flavonol content and composition greatly influences fruit quality. We previously demonstrated that the grapevine R2R3-MYB transcription factor (TF) VviMYBF1 promotes flavonol accumulation by inducing the expression of flavonol synthase (VviFLS1/VviFLS4), a key step of the initial flavonol pathway. Despite this, gene networks underlying flavonol modification in grapevine including both structural and regulatory genes remain poorly understood...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28681945/an-r2r3-myb-transcription-factor-represses-the-transformation-of-%C3%AE-and-%C3%AE-branch-carotenoids-by-negatively-regulating-expression-of-crbch2-and-crnced5-in-flavedo-of-citrus-reticulate
#9
Feng Zhu, Tao Luo, Chaoyang Liu, Yang Wang, Hongbin Yang, Wei Yang, Li Zheng, Xue Xiao, Mingfei Zhang, Rangwei Xu, Jianguo Xu, Yunliu Zeng, Juan Xu, Qiang Xu, Wenwu Guo, Robert M Larkin, Xiuxin Deng, Yunjiang Cheng
Although the functions of carotenogenic genes are well documented, little is known about the mechanisms that regulate their expression, especially those genes involved in α - and β-branch carotenoid metabolism. In this study, an R2R3-MYB transcriptional factor (CrMYB68) that directly regulates the transformation of α- and β-branch carotenoids was identified using Green Ougan (MT), a stay-green mutant of Citrus reticulata cv Suavissima. A comprehensive analysis of developing and harvested fruits indicated that reduced expression of β-carotene hydroxylases 2 (CrBCH2) and 9-cis-epoxycarotenoid dioxygenase 5 (CrNCED5) was responsible for the delay in the transformation of α- and β-carotene and the biosynthesis of ABA...
July 6, 2017: New Phytologist
https://www.readbyqxmd.com/read/28675474/pherf6-interacting-with-eobi-negatively-regulates-fragrance-biosynthesis-in-petunia-flowers
#10
Fei Liu, Zhina Xiao, Li Yang, Qian Chen, Lu Shao, Juanxu Liu, Yixun Yu
In petunia, the production of volatile benzenoids/phenylpropanoids determines floral aroma, highly regulated by development, rhythm and ethylene. Previous studies identified several R2R3-type MYB trans-factors as positive regulators of scent biosynthesis in petunia flowers. Ethylene response factors (ERFs) have been shown to take part in the signal transduction of hormones, and regulation of metabolism and development processes in various plant species. Using virus-induced gene silencing technology, a negative regulator of volatile benzenoid biosynthesis, PhERF6, was identified by a screen for regulators of the expression of genes related to scent production...
July 4, 2017: New Phytologist
https://www.readbyqxmd.com/read/28668094/genome-wide-organization-and-expression-profiling-of-the-r2r3-myb-transcription-factor-family-in-pineapple-ananas-comosus
#11
Chaoyang Liu, Tao Xie, Chenjie Chen, Aiping Luan, Jianmei Long, Chuhao Li, Yaqi Ding, Yehua He
BACKGROUND: The MYB proteins comprise one of the largest families of plant transcription factors, which are involved in various plant physiological and biochemical processes. Pineapple (Ananas comosus) is one of three most important tropical fruits worldwide. The completion of pineapple genome sequencing provides a great opportunity to investigate the organization and evolutionary traits of pineapple MYB genes at the genome-wide level. RESULTS: In the present study, a total of 94 pineapple R2R3-MYB genes were identified and further phylogenetically classified into 26 subfamilies, as supported by the conserved gene structures and motif composition...
July 1, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28659938/functional-characterization-of-tea-camellia-sinensis-myb4a-transcription-factor-using-an-integrative-approach
#12
Mingzhuo Li, Yanzhi Li, Lili Guo, Niandi Gong, Yongzheng Pang, Wenbo Jiang, Yajun Liu, Xiaolan Jiang, Lei Zhao, Yunsheng Wang, De-Yu Xie, Liping Gao, Tao Xia
Green tea (Camellia sinensis, Cs) abundantly produces a diverse array of phenylpropanoid compounds benefiting human health. To date, the regulation of the phenylpropanoid biosynthesis in tea remains to be investigated. Here, we report a cDNA isolated from leaf tissues, which encodes a R2R3-MYB transcription factor. Amino acid sequence alignment and phylogenetic analysis indicate that it is a member of the MYB4-subgroup and named as CsMYB4a. Transcriptional and metabolic analyses show that the expression profile of CsMYB4a is negatively correlated to the accumulation of six flavan-3-ols and other phenolic acids...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28654660/isolation-and-characterization-of-gmmybj3-an-r2r3-myb-transcription-factor-that-affects-isoflavonoids-biosynthesis-in-soybean
#13
Mingzhu Zhao, Tianliang Wang, Ping Wu, Wenyun Guo, Liantai Su, Ying Wang, Yajing Liu, Fan Yan, Qingyu Wang
Isoflavonoids are secondary metabolites that play a variety of roles in plant-microbe interactions and plant defenses against abiotic stresses. Here we report a new MYB transcription factor (TF) gene, GmMYBJ3, that is involved in the isoflavonoids biosynthesis. The GmMYBJ3 gene is 1,002 bp long and encodes a protein of 333 amino acids. Amino acid sequence analysis showed that GmMYBJ3 is a typical R2R3 MYB TF. Yeast expression experiment demonstrated that GmMYBJ3 has its transcription activity in the nucleus and is transiently expressed in onion epidermal cells...
2017: PloS One
https://www.readbyqxmd.com/read/28642775/ectopic-expression-of-the-grape-hyacinth-muscari-armeniacum-r2r3-myb-transcription-factor-gene-maan2-induces-anthocyanin-accumulation-in-tobacco
#14
Kaili Chen, Hongli Liu, Qian Lou, Yali Liu
Anthocyanins are responsible for the different colors of ornamental plants. Grape hyacinth (Muscari armeniacum), a monocot plant with bulbous flowers, is popular for its fascinating blue color. In the present study, we functionally characterized an R2R3-MYB transcription factor gene MaAN2 from M. armeniacum. Our results indicated that MaAN2 participates in controlling anthocyanin biosynthesis. Sequence alignment and phylogenetic analysis suggested that MaAN2 belonged to the R2R3-MYB family AN2 subgroup. The anthocyanin accumulation of grape hyacinth flowers was positively correlated with the expression of MaAN2...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28637218/genome-wide-characterization-and-expression-analysis-enables-identification-of-abiotic-stress-responsive-myb-transcription-factors-in-cassava-manihot-esculenta
#15
Meng-Bin Ruan, Xin Guo, Bin Wang, Yi-Ling Yang, Wen-Qi Li, Xiao-Ling Yu, Peng Zhang, Ming Peng
The myeloblastosis (MYB) transcription factor superfamily is the largest transcription factor family in plants, playing different roles during stress response. However, abiotic stress-responsive MYB transcription factors have not been systematically studied in cassava (Manihot esculenta), an important tropical tuber root crop. In this study, we used a genome-wide transcriptome analysis to predict 299 putative MeMYB genes in the cassava genome. Under drought and cold stresses, many MeMYB genes exhibited different expression patterns in cassava leaves, indicating that these genes might play a role in abiotic stress responses...
June 20, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28602696/the-medicago-truncatula-r2r3-myb-transcription-factor-gene-mtmybs1-enhances-salinity-tolerance-when-constitutively-expressed-in-arabidopsis-thaliana
#16
Wei Dong, Yuguang Song, Zhong Zhao, Nian Wei Qiu, Xijiang Liu, Weihua Guo
MYB-type proteins are known to participate in many stress responses, although their role in legumes is still less clear. Here, the isolation and characterization of MtMYBS1, an R2R3 MYB gene isolated from the model legume Medicago truncatula, is described. MtMYBS1 transcription was inducible by NaCl, polyethylene glycol or abscisic acid (ABA). When tested in yeast, its product was shown to have transactivational activity. The constitutive expression of MtMYBS1 in Arabidopsis thaliana seedlings mitigated the restriction on root growth imposed by either salinity or osmotic stress and raised their sensitivity to ABA...
August 19, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28587075/identification-of-anthocyanin-composition-and-functional-analysis-of-an-anthocyanin-activator-in-solanum-nigrum-fruits
#17
Shaoli Wang, Zhaohui Chu, Mingxing Ren, Ru Jia, Changbao Zhao, Dan Fei, Hao Su, Xiaoqi Fan, Xiaotian Zhang, Yang Li, Yingzi Wang, Xinhua Ding
Solanum nigrum fruits have been conventionally used in beverages due to their nutritional substances such as minerals, vitamins, amino acids, proteins, sugars, polyphenols, and anthocyanins. The characterization of components and regulatory mechanism of anthocyanins in S. nigrum fruits have rarely been reported. In this study, we determined that the peel and flesh of S. nigrum fruits shared similar HPLC profiles but different contents and total antioxidant activities for anthocyanins. After an efficient purification method, mainly including extraction with pH 1...
May 25, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28549191/maintenance-of-phosphate-homeostasis-and-root-development-are-coordinately-regulated-by-myb1-an-r2r3-type-myb-transcription-factor-in-rice
#18
Mian Gu, Jun Zhang, Huanhuan Li, Daqian Meng, Ran Li, Xiaoli Dai, Shichao Wang, Wei Liu, Hongye Qu, Guohua Xu
The adaptive responses of plants to phosphate (Pi) starvation stress are fine-tuned by an elaborate regulatory network. In this study, we identified and characterized a novel Pi starvation-responsive gene, MYB1, encoding an R2R3-type transcription factor in rice. MYB1 was transcriptionally induced in leaf sheaths and old leaf blades. It was localized to the nucleus and expressed mainly in vascular tissues. Mutation of MYB1 led to an increase in Pi uptake and accumulation, accompanied by altered expression of a subset of Pi transporters and several genes involved in Pi starvation signaling...
May 26, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28536099/repression-of-mir156-by-mir159-regulates-the-timing-of-the-juvenile-to-adult-transition-in-arabidopsis
#19
Changkui Guo, Yunmin Xu, Min Shi, Yongmin Lai, Xi Wu, Huasen Wang, Zhujun Zhu, R Scott Poethig, Gang Wu
Temporally regulated microRNAs have been identified as master regulators of developmental timing in both animals and plants. In plants, vegetative development is regulated by a temporal decrease in miR156 level, but how this decreased expression is initiated and then maintained during shoot development remains elusive. Here, we show that miR159 is required for the correct timing of vegetative development in Arabidopsis thaliana Loss of miR159 increases miR156 level throughout shoot development and delays vegetative development, whereas overexpression of miR159 slightly accelerated vegetative development...
June 2017: Plant Cell
https://www.readbyqxmd.com/read/28523445/ptrmyb57-contributes-to-the-negative-regulation-of-anthocyanin-and-proanthocyanidin-biosynthesis-in-poplar
#20
Shuzhen Wan, Chaofeng Li, Xiaodong Ma, Keming Luo
A novel R2R3 MYB transcription factor PtrMYB57 interacted with bHLH131 and PtrTTG1 to form the MBW complex and negatively regulated the biosynthesis of both anthocyanins and PAs in poplar. R2R3-MYB transcription factors (TFs) are important regulators of secondary metabolite biosynthesis in woody species. A series of R2R3-MYB TFs involved in anthocyanin and proanthocyanidin (PA) biosynthesis have been identified in poplar. In this study, we report the identification and characterization of a subgroup 4 MYB member PtrMYB57, which contains a repressor domain (LxLxL) at the C-terminal end...
August 2017: Plant Cell Reports
keyword
keyword
27284
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"