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https://www.readbyqxmd.com/read/28328971/mapping-the-n-linked-glycosites-of-rice-oryza-sativa-l-germinating-embryos
#1
Jiezheng Ying, Juan Zhao, Yuxuan Hou, Yifeng Wang, Jiehua Qiu, Zhiyong Li, Xiaohong Tong, Zhaomei Shi, Jun Zhu, Jian Zhang
Germination is a key event in the angiosperm life cycle. N-glycosylation of proteins is one of the most common post-translational modifications, and has been recognized to be an important regulator of the proteome of the germinating embryo. Here, we report the first N-linked glycosites mapping of rice embryos during germination by using a hydrophilic interaction chromatography (HILIC) glycopeptides enrichment strategy associated with high accuracy mass spectrometry identification. A total of 242 glycosites from 191 unique proteins was discovered...
2017: PloS One
https://www.readbyqxmd.com/read/28326087/arabidopsis-nac-transcription-factor-jungbrunnen1-exerts-conserved-control-over-gibberellin-and-brassinosteroid-metabolism-and-signaling-genes-in-tomato
#2
Sara Shahnejat-Bushehri, Annapurna D Allu, Nikolay Mehterov, Venkatesh P Thirumalaikumar, Saleh Alseekh, Alisdair R Fernie, Bernd Mueller-Roeber, Salma Balazadeh
The Arabidopsis thaliana NAC transcription factor JUNGBRUNNEN1 (AtJUB1) regulates growth by directly repressing GA3ox1 and DWF4, two key genes involved in gibberellin (GA) and brassinosteroid (BR) biosynthesis, respectively, leading to GA and BR deficiency phenotypes. AtJUB1 also reduces the expression of PIF4, a bHLH transcription factor that positively controls cell elongation, while it stimulates the expression of DELLA genes, which are important repressors of growth. Here, we extend our previous findings by demonstrating that AtJUB1 induces similar GA and BR deficiency phenotypes and changes in gene expression when overexpressed in tomato (Solanum lycopersicum)...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28320734/topless-mediates-brassinosteroid-control-of-shoot-boundaries-and-root-meristem-development-in-arabidopsis-thaliana
#3
Ana Espinosa-Ruiz, Cristina Martínez, Miguel de Lucas, Norma Fàbregas, Nadja Bosch, Ana I Caño-Delgado, Salomé Prat
The transcription factor bri1-EMS-SUPRESSOR1 (BES1) is a master regulator of brassinosteroid (BR)-regulated gene expression. BES1 together with BRASSINAZOLE-RESISTANT1 (BZR1) drive activated or repressed expression of several genes, and have a prominent role in negative regulation of BR synthesis. Here, we report that BES1 interaction with TOPLESS (TPL), via its ERF-associated amphiphilic repression EAR motif, is essential for BES1-mediated control of organ boundary formation in the SAM and the regulation of the quiescent center (QC) cell division in roots...
March 20, 2017: Development
https://www.readbyqxmd.com/read/28314933/major-genes-determining-yield-related-traits-in-wheat-and-barley
#4
REVIEW
Anna Nadolska-Orczyk, Izabela K Rajchel, Wacław Orczyk, Sebastian Gasparis
Current development of advanced biotechnology tools allows us to characterize the role of key genes in plant productivity. The implementation of this knowledge in breeding strategies might accelerate the progress in obtaining high-yielding cultivars. The achievements of the Green Revolution were based on a specific plant ideotype, determined by a single gene involved in gibberellin signaling or metabolism. Compared with the 1950s, an enormous increase in our knowledge about the biological basis of plant productivity has opened new avenues for novel breeding strategies...
March 17, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28314132/rhizobial-symbiosis-alleviates-polychlorinated-biphenyls-induced-systematic-oxidative-stress-via-brassinosteroids-signaling-in-alfalfa
#5
Xiaomi Wang, Ying Teng, Ning Zhang, Peter Christie, Zhengao Li, Yongming Luo, Jun Wang
The role of symbiotic rhizobia in the alleviation of polychlorinated biphenyl (PCB)-induced phytotoxicity in alfalfa and the brassinosteroid (BR) hormone signaling involved were investigated during phytoremediation. The association between alfalfa and Sinorhizobium meliloti was adopted as a remediation model. Phytotoxicity due to PCB 77 (3,3',4,4'-tetrachlorobiphenyl) exerted adverse impacts on plant performance (biomass accumulation and photosynthesis) and elicited cellular oxidative stress (overproduction of reactive oxygen species, lipid peroxidation, and cell necrosis) which was largely attenuated by pre-inoculation with S...
March 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28303144/the-cytochrome-p450-gene-cscyp85a1-is-a-putative-candidate-for-super-compact-1-scp-1-plant-architecture-mutation-in-cucumber-cucumis-sativus-l
#6
Hui Wang, Wanqing Li, Yaguang Qin, Yupeng Pan, Xiaofeng Wang, Yiqun Weng, Peng Chen, Yuhong Li
The dwarf or compact plant architecture is an important trait in plant breeding. A number of genes controlling plant height have been cloned and functionally characterized which often involve in biosynthesis or signaling of plant hormones such as brassinosteroids (BRs). No genes for plant height or vine length have been cloned in cucurbit crops (family Cucurbitaceae). From an EMS-induced mutagenesis population, we identified a super compact (SCP) mutant C257 which was extremely dwarf due to practically no internode elongation...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28292892/noncanonical-role-of-arabidopsis-cop1-spa-complex-in-repressing-bin2-mediated-pif3-phosphorylation-and-degradation-in-darkness
#7
Jun-Jie Ling, Jian Li, Danmeng Zhu, Xing Wang Deng
The E3 ligase CONSTITUTIVELY PHOTOMORPHOGENIC 1 (COP1) has been known to mediate key signaling factors for degradation via the ubiquitin/26S proteasome pathway in both plants and animals. Here, we report a noncanonical function of Arabidopsis COP1, the central repressor of photomorphogenesis, in the form of a COP1/ SUPPRESSOR of phyA-105 (SPA) complex. We show that the COP1/SPA complex associates with and stabilizes PHYTOCHROME INTERACTING FACTOR 3 (PIF3) to repress photomorphogenesis in the dark. We identify the GSK3-like kinase BRASSINOSTEROID-INSENSITIVE 2 (BIN2) as a kinase of PIF3, which induces PIF3 degradation via 26S proteasome during skotomorphogenesis...
March 14, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28289192/brassinosteroid-insensitive2-negatively-regulates-cellulose-synthesis-in-arabidopsis-by-phosphorylating-cellulose-synthase-1
#8
Clara Sánchez-Rodríguez, KassaDee Ketelaar, Rene Schneider, Jose A Villalobos, Chris R Somerville, Staffan Persson, Ian S Wallace
The deposition of cellulose is a defining aspect of plant growth and development, but regulation of this process is poorly understood. Here, we demonstrate that the protein kinase BRASSINOSTEROID INSENSITIVE2 (BIN2), a key negative regulator of brassinosteroid (BR) signaling, can phosphorylate Arabidopsis cellulose synthase A1 (CESA1), a subunit of the primary cell wall cellulose synthase complex, and thereby negatively regulate cellulose biosynthesis. Accordingly, point mutations of the BIN2-mediated CESA1 phosphorylation site abolished BIN2-dependent regulation of cellulose synthase activity...
March 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28282853/synthesis-of-five-known-brassinosteroid-analogs-from-hyodeoxycholic-acid-and-their-activities-as-plant-growth-regulators
#9
María Isabel Duran, Cesar González, Alison Acosta, Andrés F Olea, Katy Díaz, Luis Espinoza
Brassinosteroids (BRs) are plant hormones that promote growth in different plant organs and tissues. The structural requirements that these compounds should possess to exhibit this biological activity have been studied. In this work, a series of known BR analogs 5-15, were synthesized starting from hyodeoxycholic acid 4, and maintaining the alkyl side chain as cholic acid or its methyl ester. The growth-promoting effects of brassinolide (1) and synthesized analogs were evaluated by using the rice lamina inclination assay at concentrations ranging from 1 × 10(-8)-1 × 10(-6) M...
March 8, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28273925/sorghum-dw1-positively-regulates-brassinosteroid-signaling-by-inhibiting-the-nuclear-localization-of-brassinosteroid-insensitive-2
#10
Ko Hirano, Mayuko Kawamura, Satoko Araki-Nakamura, Haruka Fujimoto, Kozue Ohmae-Shinohara, Miki Yamaguchi, Akihiro Fujii, Hiroaki Sasaki, Shigemitsu Kasuga, Takashi Sazuka
Semi-dwarf traits have been widely introgressed into cereal crops to improve lodging resistance. In sorghum (Sorghum bicolor L. Moench), four major unlinked dwarfing genes, Dw1-Dw4, have been introduced to reduce plant height, and among them, Dw3 and Dw1 have been cloned. Dw3 encodes a gene involved in auxin transport, whereas, Dw1 was recently isolated and identified as a gene encoding a protein of unknown function. In this study, we show that DW1 is a novel component of brassinosteroid (BR) signaling. Sorghum possessing the mutated allele of Dw1 (dw1), showed similar phenotypes to rice BR-deficient mutants, such as reduced lamina joint bending, attenuated skotomorphogenesis, and insensitivity against feedback regulation of BR-related genes...
December 2017: Scientific Reports
https://www.readbyqxmd.com/read/28270626/rxlr-effector-avr2-up-regulates-a-brassinosteroid-responsive-bhlh-transcription-factor-to-suppress-immunity
#11
Dionne Turnbull, Lina Yang, Shaista Naqvi, Susan Breen, Lydia Welsh, Jennifer Stephens, Jennifer Morris, Petra C Boevink, Peter E Hedley, Jiasui Zhan, Paul R J Birch, Eleanor M Gilroy
An emerging area in plant research focuses on antagonism between regulatory systems governing growth and immunity. Such crosstalk represents a point of vulnerability for pathogens to exploit. AVR2, an RXLR effector secreted by the potato blight pathogen Phytophthora infestans, interacts with potato BSL1, a putative phosphatase implicated in growth-promoting brassinosteroid (BR) hormone signalling. Transgenic potato (Solanum tuberosum) plants expressing the effector exhibit transcriptional and phenotypic hallmarks of over-active BR signalling, and show enhanced susceptibility to P...
March 7, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28258966/overexpression-of-populus-trichocarpa-cyp85a3-promotes-growth-and-biomass-production-in-transgenic-trees
#12
Yan-Li Jin, Ren-Jie Tang, Hai-Hai Wang, Chun-Mei Jiang, Yan Bao, Yang Yang, Mei-Xia Liang, Fanjing Kong, Bei Li, Hong-Xia Zhang
Brassinosteroids (BRs) are essential hormones that play crucial roles in plant growth, reproduction and response to abiotic and biotic stress. In Arabidopsis, AtCYP85A2 works as a bifunctional cytochrome P450 monooxygenase to catalyze the conversion of castasterone (CS) to brassinolide (BL), a final rate-limiting step in the BR biosynthetic pathway. Here, we report the functional characterizations of PtCYP85A3, one of the three AtCYP85A2 homologous genes from Populus trichocarpa. PtCYP85A3 shares the highest similarity with AtCYP85A2 and can rescue the retarded-growth phenotype of the Arabidopsis cyp85a2-2 and tomato d(x) mutants...
March 4, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28250584/brassinosteroids-improve-photosystem-ii-efficiency-gas-exchange-antioxidant-enzymes-and-growth-of-cowpea-plants-exposed-to-water-deficit
#13
J V Lima, A K S Lobato
Water deficit is considered the main abiotic stress that limits agricultural production worldwide. Brassinosteroids (BRs) are natural substances that play roles in plant tolerance against abiotic stresses, including water deficit. This research aims to determine whether BRs can mitigate the negative effects caused by water deficiency, revealing how BRs act and their possible contribution to increased tolerance of cowpea plants to water deficit. The experiment was a factorial design with the factors completely randomised, with two water conditions (control and water deficit) and three levels of brassinosteroids (0, 50 and 100 nM 24-epibrassinolide; EBR is an active BRs)...
January 2017: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
https://www.readbyqxmd.com/read/28245791/24-epibrassinolide-stimulates-imidacloprid-detoxification-by-modulating-the-gene-expression-of-brassica-juncea-l
#14
Anket Sharma, Sharad Thakur, Vinod Kumar, Anup Kumar Kesavan, Ashwani Kumar Thukral, Renu Bhardwaj
BACKGROUND: Pesticides cause oxidative stress to plants and their residues persist in plant parts, which are a major concern for the environment as well as human health. Brassinosteroids (BRs) are known to protect plants from abiotic stress conditions including pesticide toxicity. The present study demonstrated the effects of seed-soaking with 24-epibrassinolide (EBR) on physiological responses of 10-day old Brassica juncea seedlings grown under imidacloprid (IMI) toxicity. RESULTS: In the seedlings raised from EBR-treated seeds and grown under IMI toxicity, the contents of hydrogen peroxide (H2O2) and superoxide anion (O(...
February 28, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28244988/the-arabidopsis-o-fucosyltransferase-spindly-activates-nuclear-growth-repressor-della
#15
Rodolfo Zentella, Ning Sui, Benjamin Barnhill, Wen-Ping Hsieh, Jianhong Hu, Jeffrey Shabanowitz, Michael Boyce, Neil E Olszewski, Pei Zhou, Donald F Hunt, Tai-Ping Sun
Plant development requires coordination among complex signaling networks to enhance the plant's adaptation to changing environments. DELLAs, transcription regulators originally identified as repressors of phytohormone gibberellin signaling, play a central role in integrating multiple signaling activities via direct protein interactions with key transcription factors. Here, we found that DELLA is mono-O-fucosylated by the novel O-fucosyltransferase SPINDLY (SPY) in Arabidopsis thaliana. O-fucosylation activates DELLA by promoting its interaction with key regulators in brassinosteroid- and light-signaling pathways, including BRASSINAZOLE-RESISTANT1 (BZR1), PHYTOCHROME-INTERACTING-FACTOR3 (PIF3) and PIF4...
February 28, 2017: Nature Chemical Biology
https://www.readbyqxmd.com/read/28220140/nbs-lrr-protein-pik-h4-interacts-with-osbihd1-to-balance-rice-blast-resistance-and-growth-by-coordinating-ethylene-brassinosteroid-pathway
#16
Hao Liu, Shuangyu Dong, Fengwei Gu, Wei Liu, Guili Yang, Ming Huang, Wuming Xiao, Yongzhu Liu, Tao Guo, Hui Wang, Zhiqiang Chen, Jiafeng Wang
The regulation of innate immunity and plant growth, along with the trade-off between them, affects the defense and recovery mechanisms of the plant after it is attacked by pathogens. Although it is known that hormonal crosstalk plays a major role in regulating interaction of plant growth and PAMP-triggered immunity, the relationship between plant growth and effector-triggered immunity (ETI) remains unclear. In a large-scale yeast two-hybrid screening for Pik-H4-interacting proteins, a homeodomain transcription factor OsBIHD1 was identified, which is previously known to function in biotic and abiotic stress responses...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28187161/modeling-hormonal-control-of-cambium-proliferation
#17
Vladyslav Oles, Alexander Panchenko, Andrei Smertenko
Rise of atmospheric CO2 is one of the main causes of global warming. Catastrophic climate change can be avoided by reducing emissions and increasing sequestration of CO2. Trees are known to sequester CO2 during photosynthesis, and then store it as wood biomass. Thus, breeding of trees with higher wood yield would mitigate global warming as well as augment production of renewable construction materials, energy, and industrial feedstock. Wood is made of cellulose-rich xylem cells produced through proliferation of a specialized stem cell niche called cambium...
2017: PloS One
https://www.readbyqxmd.com/read/28176007/functional-characterization-of-agamous-subfamily-members-from-cotton-during-reproductive-development-and-in-response-to-plant-hormones
#18
Stéfanie Menezes de Moura, Sinara Artico, Cássio Lima, Sarah Muniz Nardeli, Ana Berbel, Osmundo Brilhante Oliveira-Neto, Maria Fátima Grossi-de-Sá, Cristina Ferrándiz, Francisco Madueño, Márcio Alves-Ferreira
Expression analysis of the AG -subfamily members from G. hirsutum during flower and fruit development. Reproductive development in cotton, including the fruit and fiber formation, is a complex process; it involves the coordinated action of gene expression regulators, and it is highly influenced by plant hormones. Several studies have reported the identification and expression of the transcription factor family MADS-box members in cotton ovules and fibers; however, their roles are still elusive during the reproductive development in cotton...
March 2017: Plant Reproduction
https://www.readbyqxmd.com/read/28153720/overexpression-of-bak1-causes-salicylic-acid-accumulation-and-deregulation-of-cell-death-control-genes
#19
Sun Young Kim, Yun Shang, Se-Hwan Joo, Seong-Ki Kim, Kyoung Hee Nam
Since the BRI1-Associated Receptor Kinase 1 (BAK1) was firstly identified as a co-receptor of BRI1 that mediates brassinosteroids (BR) signaling, the functional roles of BAK1, as a versatile co-receptor for various ligand-binding leucine-rich repeat (LRR)-containing receptor-like kinase (RLKs), are being extended to involvement with plant immunity, cell death, stomatal development and ABA signaling in plants. During more than a decade of research on the BAK1, it has been known that transgenic Arabidopsis plants overexpressing BAK1 tagged with various reporters do not fully represent its natural functions...
January 31, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28153259/in-situ-fabrication-of-label-free-optical-sensing-paper-strips-for-the-rapid-surface-enhanced-raman-scattering-sers-detection-of-brassinosteroids-in-plant-tissues
#20
Miao Chen, Zhimin Zhang, Minzhuo Liu, Chen Qiu, Hua Yang, Xiaoqing Chen
A surface-enhanced Raman scattering (SERS)-functionalized, gold nanoparticle (AuNPs)-immobilized paper strip was developed to realize label-free rapid detection of brassinosteroids (BRs) in plant tissues. The AuNPs paper strip was fabricated through utilizing poly(γ-glutamic acid) (γ-PGA) as the linker and concentrator for the directly immobilized AuNPs on paper, which can circumvent many drawbacks of the existing SERS substrates. An enhancement factor of 1.13×10(8), high reproducibility (relative standard deviation of 4...
April 1, 2017: Talanta
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