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Molecular Plant

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https://www.readbyqxmd.com/read/27923613/an-arabidopsis-thaliana-receptor-dead-kinase1-rdk1-gene-functions-as-a-positive-regulator-in-plant-responses-to-aba
#1
Dhinesh Kumar, Ritesh Kumar, Dongwon Baek, Tae-Kyung Hyun, Woo Sik Chung, Dae-Jin Yun, Jae-Yean Kim
Abscisic acid (ABA) is a major phytohormone involved in important stress-related and developmental plant processes. Membrane-delimited ABA signal transduction plays an important role in early ABA signaling, but the molecular mechanisms connecting core signaling components to the plasma membrane (PM) are unclear. Plants have evolved a large number of receptor-like kinases (RLKs) to modulate diverse biological processes by perceiving extracellular stimuli and activating downstream signaling responses. Here, a putative leucine-rich repeat (LRR)-RLK gene named RECEPTOR DEAD KINASE1 (AtRDK1) was identified and characterized in Arabidopsis thaliana...
December 3, 2016: Molecular Plant
https://www.readbyqxmd.com/read/27913317/tomatonet-a-genome-wide-co-functional-network-for-unveiling-complex-traits-of-tomato-a-model-crop-for-fleshy-fruits
#2
LETTER
Hyojin Kim, Bong Suk Kim, Jung Eun Shim, Sohyun Hwang, Sunmo Yang, Eiru Kim, Anjali S Iyer-Pascuzzi, Insuk Lee
No abstract text is available yet for this article.
November 29, 2016: Molecular Plant
https://www.readbyqxmd.com/read/27890636/brassica-rapa-genome-2-0-a-reference-upgrade-through-sequence-re-assembly-and-gene-re-annotation
#3
LETTER
Chengcheng Cai, Xiaobo Wang, Bo Liu, Jian Wu, Jianli Liang, Yinan Cui, Feng Cheng, Xiaowu Wang
No abstract text is available yet for this article.
November 24, 2016: Molecular Plant
https://www.readbyqxmd.com/read/27890635/hos1-facilitates-the-phytochrome-b-mediated-inhibition-of-pif4-function-during-hypocotyl-growth-in-arabidopsis
#4
Ju-Heon Kim, Hyo-Jun Lee, Jae-Hoon Jung, Sangmin Lee, Chung-Mo Park
Upon exposure to light, developing seedlings undergo photomorphogenesis, as illustrated by inhibition of hypocotyl elongation, cotyledon opening, and leaf greening. Hypocotyl growth is a well-established model for photomorphogenesis studies. During hypocotyl photomorphogenesis, light signals are sensed by multiple photoreceptors, among which the red/far-red light-sensing phytochromes have been extensively studied. However, it is not fully understood how the phytochromes modulate hypocotyl growth. Here, we demonstrated that HIGH EXPRESSION OF OSMOTICALLY RESPONSIVE GENES 1 (HOS1), which is known to either act as E3 ubiquitin ligase or affect chromatin organization, inhibits the transcriptional activation activity of PHYTOCHROME INTERACTING FACTOR 4 (PIF4) that promotes hypocotyl growth...
November 24, 2016: Molecular Plant
https://www.readbyqxmd.com/read/27876642/arabidopsis-nf-ycs-mediate-the-light-control-of-hypocotyl-elongation-via-modulating-histone-acetylation
#5
Yang Tang, Xuncheng Liu, Xu Liu, Yuge Li, Keqiang Wu, Xingliang Hou
Light is a crucial environmental signal that promotes photomorphogenesis, the developmental process containing a series of light-dependent alterations for plants to adapt various external challenges. Chromatin modification has been proposed to be involved in such light-mediated growth, but the underlying mechanism is still elusive. Here, we identify that the four Arabidopsis thaliana Nuclear Factor-YC homologues NF-YC1, NF-YC3, NF-YC4, and NF-YC9 (NF-YCs) function redundantly as the repressors of light control of hypocotyl elongation via histone de-acetylation...
November 19, 2016: Molecular Plant
https://www.readbyqxmd.com/read/27871811/crystal-structure-of-the-arabidopsis-thaliana-l1l-nf-yc3-histone-fold-dimer-reveals-specificities-of-the-lec1-family-of-nf-y-subunits-in-plants
#6
LETTER
Nerina Gnesutta, Dana Saad, Antonio Chaves-Sanjuan, Roberto Mantovani, Marco Nardini
The structural analysis of the L1L/NF-YC3 histone dimer from A. thaliana shows that it can trimerize and bind to the CCAAT box. Specific sequence and structural features at the protein/DNA interface, in particular the presence of a Asp-His pair, help explain the molecular mechanisms of LEC1/L1L activity as a bona fide mammalian-like NF-YB.
November 18, 2016: Molecular Plant
https://www.readbyqxmd.com/read/27871810/a-maize-gene-regulatory-network-for-phenolic-metabolism
#7
Fan Yang, Wei Li, Nan Jiang, Haidong Yu, Kengo Morohashi, Wilberforce Zachary Ouma, Daniel E Morales-Mantilla, Fabio Gomez-Cano, Eric Mukundi, Luis Daniel Prada-Salcedo, Roberto Alers Velazquez, Jasmin Valentin, Maria Katherine Mejía-Guerra, John Gray, Andrea I Doseff, Erich Grotewold
The translation of the genotype into phenotype, represented for example by the expression of genes encoding enzymes required for the biosynthesis of phytochemicals important in the interaction of plants with the environment, is carried out by transcription factors (TFs) that recognize specific cis-regulatory elements in the genes that they control. TFs and their target genes are organized in gene regulatory networks (GRNs), and uncovering GRN architecture presents an important biological challenge necessary to explain gene regulation...
November 18, 2016: Molecular Plant
https://www.readbyqxmd.com/read/27867107/draft-genome-sequence-of-mentha-longifolia-l-and-development-of-resources-for-mint-cultivar-improvement
#8
Kelly J Vining, Sean R Johnson, Amirhossein Ahkami, Iris Lange, Amber N Parrish, Susan C Trapp, Rodney B Croteau, Shannon C K Straub, Iovanna Pandelova, B Markus Lange
The genus Mentha encompasses species cultivated for their essential oils, which are formulated into a vast array of consumer products. Desirable oil characteristics and resistance to the fungal disease Verticillium wilt are top priorities for the mint industry. However, cultivated mints have complex polyploid genomes and are sterile. Breeding efforts, therefore, require the development of genomic resources for fertile mint species. Here, we present draft de novo genome and plastome assemblies for a wilt-resistant South African accession of Mentha longifolia (L...
November 17, 2016: Molecular Plant
https://www.readbyqxmd.com/read/27867105/arabidopsis-nahg-plants-as-a-suitable-and-efficient-system-for-transient-expression-using-agrobacterium-tumefaciens
#9
LETTER
Tábata Rosas-Díaz, Pepe Cana-Quijada, Vitor Amorim-Silva, Miguel A Botella, Rosa Lozano-Durán, Eduardo R Bejarano
No abstract text is available yet for this article.
November 17, 2016: Molecular Plant
https://www.readbyqxmd.com/read/27865928/the-swi2-snf2-chromatin-remodeling-atpase-brahma-regulates-chlorophyll-biosynthesis-in-arabidopsis
#10
Dong Zhang, Yuhong Li, Xinyu Zhang, Ping Zha, Rongcheng Lin
Chlorophyll biosynthesis is critical for chloroplast development and photosynthesis in plants. Although reactions in the biosynthetic pathway are well established, little is known about the regulation of this pathway. In this study, we found that the dark-grown knockout and knockdown mutants and RNA interference transgenic seedlings of BRAHMA (BRM), encoding a SWI2/SNF2 chromatin-remodeling ATPase, had higher greening rates, accumulated less protochlorophyllide, and produced less reactive oxygen species than did Arabidopsis wild-type plants upon light exposure...
November 16, 2016: Molecular Plant
https://www.readbyqxmd.com/read/27847325/an-arabidopsis-abc-transporter-mediates-phosphate-deficiency-induced-remodeling-of-root-architecture-by-modulating-iron-homeostasis-in-roots
#11
Jinsong Dong, Miguel A Piñeros, Xiaoxuan Li, Haibing Yang, Yu Liu, Angus S Muphy, Leon V Kochian, Dong Liu
The remodeling of root architecture is a major developmental response of plants to phosphate (Pi) deficiency and is thought to enhance a plant's ability to forage Pi in topsoil. The underlying mechanism controlling this response, however, is poorly understood. In this work, we identified an Arabidopsis mutant, hps10 (hypersensitive to Pi starvation 10), that is morphologically normal under Pi sufficiency but shows increased inhibition of primary root growth and enhanced production of lateral roots under Pi deficiency...
November 12, 2016: Molecular Plant
https://www.readbyqxmd.com/read/27825944/the-u6-biogenesis-like-1-plays-an-important-role-in-maize-kernel-and-seedling-development-by-affecting-the-3-end-processing-of-u6-snrna
#12
Jiankun Li, Junjie Fu, Yan Chen, Kaijian Fan, Cheng He, Zhiqiang Zhang, Li Li, Yunjun Liu, Jun Zheng, Dongtao Ren, Guoying Wang
The regulation of gene expression at the post-transcriptional level is of crucial importance in the development of an organism. Here, we present a maize gene, U6 biogenesis like 1 (UBL1), which plays an important role in kernel and seedling development by influencing pre-mRNA splicing. The ubl1 mutant, revealing the phenotype of small kernel and weak seedling, was isolated from a Mutator-tagged population. Transgenic complementation and three independent mutant alleles confirmed that UBL1 is responsible for the phenotype of ubl1...
November 4, 2016: Molecular Plant
https://www.readbyqxmd.com/read/27816695/tracking-tonoplast-protein-behaviors-in-intact-vacuoles-isolated-from-arabidopsis-leaves
#13
LETTER
Xueqin Lv, Yanping Jing, Hongyang Wu, Jinxing Lin
No abstract text is available yet for this article.
November 2, 2016: Molecular Plant
https://www.readbyqxmd.com/read/27794502/surveying-the-oligomeric-state-of-arabidopsis-thaliana-chloroplasts
#14
Peter K Lundquist, Otho Mantegazza, Anja Stefanski, Kai Stühler, Andreas P M Weber
Blue native-PAGE (BN-PAGE) resolves protein complexes in their native state. When combined with immunoblotting, it can be used to identify the presence of high molecular weight complexes at high resolution for any protein, given a suitable antibody. To identify proteins in high molecular weight complexes on a large scale and to bypass the requirement for specific antibodies, we applied a tandem mass spectrometry (MS/MS) approach to BN-PAGE-resolved chloroplasts. Fractionation of the gel into six bands allowed identification and label-free quantification of 1000 chloroplast proteins with native molecular weight separation...
October 26, 2016: Molecular Plant
https://www.readbyqxmd.com/read/27793787/dynamic-and-antagonistic-allele-specific-epigenetic-modifications-controlling-the-expression-of-imprinted-genes-in-maize-endosperm
#15
Xiaomei Dong, Mei Zhang, Jian Chen, Lizeng Peng, Nan Zhang, Xin Wang, Jinsheng Lai
Genomic imprinting is often associated with allele-specific epigenetic modifications. Although there are many reports suggesting the potential roles of DNA methylation and H3K27me3 in regulation of genomic imprinting, research about the contributions of allele-specific active histone modifications to imprinting has been highly limited in plant. Here we reported the identification of 337 high-stringency allele-specific H3K4me3 and H3K36me3 peaks in maize endosperm. Paternally preferred H3K4me3 and H3K36me3 peaks mostly co-localized at paternally expressed genes (PEGs), while endosperm-specific maternally expressed genes (endo-MEGs) were associated with maternally preferred H3K4me3 and H3K36me3 peaks...
October 25, 2016: Molecular Plant
https://www.readbyqxmd.com/read/27780781/ycf1-tic214-is-not-essential-for-the-accumulation-of-plastid-proteins
#16
LETTER
Bettina Bölter, Jürgen Soll
No abstract text is available yet for this article.
October 22, 2016: Molecular Plant
https://www.readbyqxmd.com/read/27777125/dynamic-changes-of-isia-containing-complexes-during-long-term-iron-deficiency-in-synechocystis-sp-pcc-6803
#17
Fei Ma, Xin Zhang, Xi Zhu, Tianpei Li, Jiao Zhan, Hui Chen, Chenliu He, Qiang Wang
Iron stress-induced protein A (IsiA), a major chlorophyll-binding protein in the thylakoid membrane, is significantly induced under iron deficiency conditions. Using immunoblot analysis and 77 K fluorescence spectroscopy combined with sucrose gradient fractionation, we monitored dynamic changes of IsiA-containing complexes in Synechocystis sp. PCC 6803 during exposure to long-term iron deficiency. Within 3 days of exposure to iron deficiency conditions, the initially induced free IsiA proteins preferentially conjugated to PS I trimer to form IsiA18-PS I trimers, which serve as light energy collectors for efficiently transmitting energy to PS I...
October 21, 2016: Molecular Plant
https://www.readbyqxmd.com/read/27773755/interview-with-dale-sanders
#18
Dale Sanders
No abstract text is available yet for this article.
October 20, 2016: Molecular Plant
https://www.readbyqxmd.com/read/27769939/immunopurification-and-mass-spectrometry-identifies-protein-phosphatase-2a-pp2a-and-bin2-gsk3-as-regulators-of-aks-transcription-factors-in-arabidopsis
#19
LETTER
Shuo-Lei Bu, Chao Liu, Ning Liu, Ji-Long Zhao, Lian-Feng Ai, Hao Chi, Kathy L Li, Chih-Wei Chien, Alma L Burlingame, Sheng-Wei Zhang, Zhi-Yong Wang
No abstract text is available yet for this article.
October 18, 2016: Molecular Plant
https://www.readbyqxmd.com/read/27746301/contribution-of-the-alternative-respiratory-pathway-to-psii-photoprotection-in-c3-and-c4-plants
#20
Zi-Shan Zhang, Mei-Jun Liu, Renate Scheibe, Jennifer Selinski, Li-Tao Zhang, Cheng Yang, Xiang-Long Meng, Hui-Yuan Gao
The mechanism by which the mitochondrial alternative oxidase (AOX) pathway contributes to PSII photoprotection is in dispute. The current consensus is that the AOX pathway protects photosystems by dissipating excess reducing equivalents that are exported from chloroplasts through the malate/oxaloacetate (Mal/OAA) shuttle, preventing the over-reduction of chloroplasts. Here, using the aox1a Arabidopsis mutant and nine other C3 and C4 species, an additional model of the AOX pathway in PSII photoprotection is proposed...
October 13, 2016: Molecular Plant
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