journal
MENU ▼
Read by QxMD icon Read
search

Plant Cell

journal
https://www.readbyqxmd.com/read/28536145/monoterpenes-support-systemic-acquired-resistance-within-and-between-plants
#1
Marlies Riedlmeier, Andrea Ghirardo, Marion Wenig, Claudia Knappe, Kerstin Koch, Elisabeth Georgii, Sanjukta Dey, Jane E Parker, Joerg-Peter Schnitzler, Corina Vlot
This study investigates the role of volatile organic compounds in systemic acquired resistance (SAR), a salicylic acid (SA)-associated, broad-spectrum immune response in systemic, healthy tissues of locally infected plants. Gas chromatography coupled to mass spectrometry analyses of SAR-related emissions of wild-type and non-SAR-signal-producing mutant plants associated SAR with monoterpene emissions. Headspace exposure of Arabidopsis thaliana to a mixture of the bicyclic monoterpenes α-pinene and β-pinene induced defense, accumulation of reactive oxygen species, and expression of SA- and SAR-related genes, including the SAR regulatory AZELAIC ACID INDUCED1 (AZI1) gene and three of its paralogs...
May 23, 2017: Plant Cell
https://www.readbyqxmd.com/read/28536144/the-deubiquitinating-enzymes-ubp12-and-ubp13-positively-regulate-myc2-levels-in-jasmonate-responses
#2
Jin Seo Jeong, Choonkyun Jung, Jun Sung Seo, Ju-Kon Kim, Nam-Hai Chua
The transcription factor MYC2 has emerged as a master regulator of jasmonate-mediated responses as well as cross-talk among different signaling pathways. The instability of MYC2 is in part due to the action of PUB10 E3 ligase, which can polyubiquitinate this protein. Here, we show that polyubiquitinated MYC2 can be deubiquitinated by UBP12 and UBP13 in vitro, suggesting that the two deubiquitinating enzymes can counteract the effect of PUB10 in vivo. Consistent with this view, UBP12 and UBP13 associate with MYC2 in the nucleus...
May 23, 2017: Plant Cell
https://www.readbyqxmd.com/read/28536099/repression-of-mir156-by-mir159-regulates-the-timing-of-the-juvenile-to-adult-transition-in-arabidopsis
#3
Changkui Guo, Yunmin Xu, Min Shi, Yongmin Lai, Xi Wu, Huasen Wang, Zhujun Zhu, R Scott Poethig, Gang Wu
Temporally-regulated miRNAs 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...
May 23, 2017: Plant Cell
https://www.readbyqxmd.com/read/28526714/constans-imparts-dna-sequence-specificity-to-the-histone-fold-nf-yb-nf-yc-dimer
#4
Nerina Gnesutta, Roderick W Kumimoto, Swadhin Swain, Matteo Chiara, Chamindika Siriwardana, David Stephen Horner, Ben F Holt, Roberto Mantovani
NF-Y is a heterotrimeric transcription factor that binds CCAAT elements. The NF-Y trimer is composed of a Histone Fold Domain (HFD) dimer (NF-YB/NF-YC) and NF-YA, which confers DNA sequence-specificity. NF-YA shares a conserved domain with the CCT (CONSTANS, CONSTANS-LIKE, TOC1) proteins. We show that CONSTANS (CO/BBX1), a master flowering regulator, forms a trimer with Arabidopsis NF-YB2/NF-YC3 to efficiently bind the CORE element of the FT promoter. We term this complex NF-CO. Using saturation mutagenesis EMSAs and RNA-Seq profiling of co, nf-yb, and nf-yc mutants, we identify CCACA elements as the core NF-CO binding site...
May 19, 2017: Plant Cell
https://www.readbyqxmd.com/read/28526713/co-evolution-of-domain-interactions-in-the-chloroplast-tgd1-2-3-lipid-transfer-complex-specific-to-brassicaceae-and-poaceae-plants
#5
Yang Yang, Agnieszka Zienkiewicz, Anastasiya Lavell, Christoph Benning
The import of lipids into the chloroplast is essential for photosynthetic membrane biogenesis. This process requires an ABC transporter in the inner envelope membrane with three subunits, TRIGALACTOSYLDIACYLGLYCEROL (TGD) 1, 2, and 3 named after the oligogalactolipids that accumulate in the respective Arabidopsis thaliana mutants. Unlike Arabidopsis, in the model grass Brachypodium distachyon, chloroplast lipid biosynthesis is largely dependent on imported precursors, resulting in a characteristic difference in chloroplast lipid acyl composition between plants...
May 19, 2017: Plant Cell
https://www.readbyqxmd.com/read/28522549/carbonic-anhydrases-function-in-anther-cell-differentiation-downstream-of-the-receptor-like-kinase-ems1
#6
Jian Huang, Zhiyong Li, Gabriel Biener, Erhui Xiong, Shikha Malik, Nathan Eaton, Catherine Z Zhao, Valerica Raicu, Hongzhi Kong, Dazhong Dave Zhao
Plants extensively employ leucine-rich repeat receptor-like kinases (LRR-RLKs), the largest family of RLKs, to control a wide range of growth and developmental processes as well as defense responses. To date, only a few direct downstream effectors for LRR-RLKs have been identified. We previously showed that the LRR-RLK EMS1 (EXCESS MICROSPOROCYTES1) and its ligand TPD1 (TAPETUM DETERMINANT1) are required for the differentiation of somatic tapetal cells and reproductive microsporocytes during early anther development in Arabidopsis thaliana...
May 18, 2017: Plant Cell
https://www.readbyqxmd.com/read/28522548/a-multi-purpose-toolkit-to-enable-advanced-genome-engineering-in-plants
#7
Tomas Cermak, Shaun J Curtin, Javier Gil-Humanes, Radim Čegan, Thomas J Y Kono, Eva Konečná, Joseph J Belanto, Colby G Starker, Jade W Mathre, Rebecca L Greenstein, Daniel F Voytas
We report a comprehensive toolkit that enables targeted, specific modification of monocot and dicot genomes using a variety of genome engineering approaches. Our reagents, based on TALENs and the CRISPR/Cas9 system, are systematized for fast, modular cloning and accommodate diverse regulatory sequences to drive reagent expression. Vectors are optimized to create either single or multiple gene knockouts and large chromosomal deletions. Moreover, integration of geminivirus-based vectors enables precise gene editing through homologous recombination...
May 18, 2017: Plant Cell
https://www.readbyqxmd.com/read/28522547/a-regulatory-hierarchy-of-the-arabidopsis-branched-chain-amino-acid-metabolic-network
#8
Anqi Xing, Robert L Last
The branched-chain amino acids (BCAAs) Ile, Val and Leu are essential nutrients that humans and other animals obtain from plants. However, total and relative amounts of plant BCAAs rarely match animal nutritional needs, and improvement requires a better understanding of the mechanistic basis for BCAA homeostasis. We present an in vivo regulatory model of BCAA homeostasis derived from analysis of feedback-resistant Arabidopsis thaliana mutants for the three allosteric committed enzymes in the biosynthetic network: threonine deaminase (also named L-O-methylthreonine resistant 1, OMR1), acetohydroxyacid synthase small subunit 2 (AHASS2) and isopropylmalate synthase 1 (IPMS1)...
May 18, 2017: Plant Cell
https://www.readbyqxmd.com/read/28522546/the-rxlr-motif-of-the-host-targeting-effector-avr3a-of-phytophthora-infestans-is-cleaved-before-secretion
#9
Stephan Wawra, Franziska Trusch, Anja Matena, Kostis Apostolakis, Uwe Linne, Igor Zhukov, Jan Stanek, Wiktor Koźmiński, Ian Davidson, Chris J Secombes, Peter Bayer, Pieter van West
When plant-pathogenic oomycetes infect their hosts, they employ a large arsenal of effector proteins to establish a successful infection. Some effector proteins are secreted and are destined to be translocated and function inside host cells. The largest group of translocated proteins from oomycetes are the RxLR effectors, defined by their conserved N-terminal Arg-Xaa-Leu-Arg (RxLR) motif. However, the precise role of this motif in the host cell translocation process is unclear. Here detailed biochemical studies of the RxLR effector AVR3a from the potato pathogen Phytophthora infestans are presented...
May 18, 2017: Plant Cell
https://www.readbyqxmd.com/read/28487410/division-of-labor-during-apical-hook-formation
#10
Kathleen L Farquharson
No abstract text is available yet for this article.
May 9, 2017: Plant Cell
https://www.readbyqxmd.com/read/28487409/rice-homeodomain-protein-wox11-recruits-a-histone-acetyltransferase-complex-to-establish-programs-of-cell-proliferation-of-crown-root-meristem
#11
Shaoli Zhou, Wei Jiang, Fei Long, Saifeng Cheng, Wenjing Yang, Yu Zhao, Dao-Xiu Zhou
Shoot-borne crown roots are the major root system in cereals. Previous work has shown that the Wuschel-related homeobox gene WOX11 is necessary and sufficient to promote rice (Oryza sativa) crown root emergence and elongation. Here, we show that WOX11 recruits the ADA2-GCN5 histone acetyltransferase (HAT) module to activate downstream target genes in crown root meristem. Rice ADA2 and GCN5 genes are highly expressed in root meristem and are shown to be essential for cell division and growth. WOX11 and ADA2-GCN5 commonly target and regulate a set of root-specific genes involved in energy metabolism, cell wall biosynthesis, and hormone response, some of which are known to be important for root development...
May 9, 2017: Plant Cell
https://www.readbyqxmd.com/read/28465411/ethylene-inhibited-jasmonic-acid-biosynthesis-promotes-mesocotyl-coleoptile-elongation-of-etiolated-rice-seedlings
#12
Qing Xiong, Biao Ma, Xiang Lu, Yi-Hua Huang, Si-Jie He, Chao Yang, Cui-Cui Yin, He Zhao, Yang Zhou, Wan-Ke Zhang, Wen-Sheng Wang, Zhi-Kang Li, Shou-Yi Chen, Jin-Song Zhang
Elongation of the mesocotyl and coleoptile facilitates the emergence of rice seedlings from soil, and is affected by various genetic and environment factors. The regulatory mechanism underlying this process remains largely unclear. Here, we examined the regulation of mesocotyl and coleoptile growth by characterizing a gaoyao1 (gy1) mutant that exhibits a longer mesocotyl and longer coleoptile than its original variety of rice (Oryza sativa). GY1 was identified through map-based cloning and encodes a PLA1-type phospholipase that localizes in chloroplasts...
May 2, 2017: Plant Cell
https://www.readbyqxmd.com/read/28465410/the-long-non-coding-rna-elena1-functions-in-plant-immunity
#13
Jennifer Mach
No abstract text is available yet for this article.
May 2, 2017: Plant Cell
https://www.readbyqxmd.com/read/28446542/a-proteolytic-regulator-controlling-chalcone-synthase-stability-and-flavonoid-biosynthesis-in-arabidopsis
#14
Xuebin Zhang, Carolina Abrahan, Thomas A Colquhoun, Chang-Jun Liu
Flavonoids represent a large family of specialized metabolites involved in plant growth, development and adaptation. Chalcone synthase (CHS) catalyzes the first step of flavonoid biosynthesis by directing carbon flux from general phenylpropanoid metabolism to flavonoid pathway. Despite extensive characterization on its function and transcriptional regulation, the molecular basis governing its post-translational modification is enigmatic. Here, we report the discovery of a proteolytic regulator of CHS, namely KFBCHS, a Kelch domain-containing F-box protein in Arabidopsis...
April 26, 2017: Plant Cell
https://www.readbyqxmd.com/read/28442598/ethylene-regulates-differential-growth-via-big-arf-gef-dependent-post-golgi-secretory-trafficking-in-arabidopsis
#15
Kristoffer Jonsson, Yohann Boutté, Rajesh Kumar Singh, Delphine Gendre, Rishikesh Bhalerao
During early seedling development, the shoot apical meristem is protected from damage as the seedling emerges from soil by the formation of apical hook. Hook formation requires differential growth across the epidermis below the meristem in the hypocotyl. The plant hormones ethylene and auxin play key roles during apical hook development by controlling differential growth. We provide genetic and cell biological evidence for the role of ADP-ribosylation factor 1 (ARF1)-GTPase and its effector ARF-guanine-exchange factors (GEF)s of the BFA-inhibited GEF (BIG) family and GNOM in ethylene- and auxin-mediated control of hook development...
April 24, 2017: Plant Cell
https://www.readbyqxmd.com/read/28442597/the-emergence-evolution-and-diversification-of-the-mir390-tas3-arf-pathway-in-land-plants
#16
Rui Xia, Jing Xu, Blake C Meyers
In plants, miR390 directs the production of tasiRNAs from TRANS-ACTING SIRNA 3 (TAS3) transcripts to regulate AUXIN RESPONSIVE FACTOR (ARF) genes, critical for auxin signaling; these tasiRNAs are known as tasiARFs. To understand the evolution of this miR390-TAS3-ARF pathway, we characterized homologs of these three genes from thousands of plant species, from bryophytes to angiosperms. We found the lower-stem region of MIR390 genes, critical for accurate DCL1 (DICER-LIKE 1) processing, is conserved in sequence in seed plants...
April 24, 2017: Plant Cell
https://www.readbyqxmd.com/read/28442596/tissue-specific-transcriptomics-reveals-an-important-role-of-the-unfolded-protein-response-in-maintaining-fertility-upon-heat-stress-in-arabidopsis
#17
Shuang-Shuang Zhang, Hongxing Yang, Lan Ding, Ze-Ting Song, Hong Ma, Fang Chang, Jian-Xiang Liu
Elevated temperatures have a great impact on plant reproductive development and subsequent fruit and seed set, but the underlying molecular mechanisms are not well understood. We used transcriptome profiling to investigate the effect of heat stress on reproductive development of Arabidopsis (Arabidopsis thaliana) seedlings and observed distinct response patterns in vegetative vs. reproductive tissues. Exposure to heat stress affected reproductive developmental programs including early phases of anther/ovule development and meiosis, Also, genes participating in the unfolded protein response (UPR) were enriched in the reproductive tissue-specific genes that were up-regulated by heat...
April 24, 2017: Plant Cell
https://www.readbyqxmd.com/read/28420747/correction-induced-genome-wide-binding-of-three-arabidopsis-wrky-transcription-factors-during-early-mamp-triggered-immunity
#18
Imre E Somssich
No abstract text is available yet for this article.
April 18, 2017: Plant Cell
https://www.readbyqxmd.com/read/28420746/the-mitochondrial-dna-mtdna-associated-protein-swib5-influences-mtdna-architecture-and-homologous-recombination
#19
Jonas Blomme, Olivier Van Aken, Jelle Van Leene, Teddy Jégu, Riet Maria De Rycke, Michiel De Bruyne, Jasmien Vercruysse, Jonah Nolf, Twiggy Van Daele, Liesbeth De Milde, Mattias Vermeersch, Catherine Colas des Francs-Small, Geert De Jaeger, Moussa Benhamed, A Harvey Millar, Dirk Inzé, Nathalie Gonzalez
In addition to the nucleus, mitochondria and chloroplasts in plant cells also contain genomes. Efficient DNA repair pathways are crucial in these organelles to fix damage resulting from endogenous and exogenous factors. Plant organellar genomes are complex compared to their animal counterparts and although several plant-specific mediators of organelle DNA repair have been reported, many regulators remain to be identified. Here, we show that a mitochondrial SWI/SNF (nucleosome remodeling) complex B protein, SWIB5, is capable of associating with mitochondrial DNA (mtDNA) in Arabidopsis thaliana...
April 18, 2017: Plant Cell
https://www.readbyqxmd.com/read/28408661/multiomics-of-tomato-glandular-trichomes-reveals-distinct-features-of-central-carbon-metabolism-supporting-high-productivity-of-specialized-metabolites
#20
Gerd Balcke, Stefan Bennewitz, Nick Bergau, Benedikt Athmer, Anja Henning, Petra Majovsky, José M Jiménez-Gómez, Wolfgang Hoehenwarter, Alain F Tissier
Glandular trichomes are metabolic cell factories with the capacity to produce large quantities of secondary metabolites. Little is known about the connection between central carbon metabolism and metabolic productivity for secondary metabolites in glandular trichomes. To address this gap in our knowledge, we performed comparative metabolomics, transcriptomics, proteomics and 13C-labeling of type VI glandular trichomes and leaves from a cultivated (Solanum lycopersicum LA4024) and a wild (Solanum habrochaites LA1777) tomato accession...
April 13, 2017: Plant Cell
journal
journal
31048
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"