Genomes and Genes
Experts and Doctors on plant genes in Tucson, Arizona, United States
Locale: Tucson, Arizona, United States
Topic: plant genes
- Lee H, Xiong L, Ishitani M, Stevenson B, Zhu J. Cold-regulated gene expression and freezing tolerance in an Arabidopsis thaliana mutant. Plant J. 1999;17:301-8 pubmed..However, the hos2-1 mutation does not impair the vernalization response. These results indicate that HOS2 is a negative regulator of low temperature signal transduction important for plant cold acclimation. ..
- Wehmeyer N, Hernandez L, Finkelstein R, Vierling E. Synthesis of small heat-shock proteins is part of the developmental program of late seed maturation. Plant Physiol. 1996;112:747-57 pubmed..In total the data indicate that the expression of sHSPs in seeds is part of the normal developmental program of late seed maturation and the presence of sHSPs has adaptive significance for plant reproduction. ..
- Wu Q, VanEtten H. Introduction of plant and fungal genes into pea (Pisum sativum L.) hairy roots reduces their ability to produce pisatin and affects their response to a fungal pathogen. Mol Plant Microbe Interact. 2004;17:798-804 pubmed
- Xiong L, Lee Bh -, Ishitani M, Lee H, Zhang C, Zhu J. FIERY1 encoding an inositol polyphosphate 1-phosphatase is a negative regulator of abscisic acid and stress signaling in Arabidopsis. Genes Dev. 2001;15:1971-84 pubmed..These results provide the first genetic evidence indicating that phosphoinositols mediate ABA and stress signal transduction in plants and their turnover is critical for attenuating ABA and stress signaling. ..
- Miller J, Venable D. Polyploidy and the evolution of gender dimorphism in plants. Science. 2000;289:2335-8 pubmed..Subsequently, male sterile mutants invade and increase because they are unable to inbreed. ..
- Shen B, Carneiro N, Torres Jerez I, Stevenson B, McCreery T, Helentjaris T, et al. Partial sequencing and mapping of clones from two maize cDNA libraries. Plant Mol Biol. 1994;26:1085-101 pubmed..The results demonstrate that a combination of analyses provides synergistic information in eventually deducing the actual function of these types of clones. ..
- Woo H, Jeong B, Hirsch A, Hawes M. Characterization of Arabidopsis AtUGT85A and AtGUS gene families and their expression in rapidly dividing tissues. Genomics. 2007;90:143-53 pubmed..Both AtUGT85A and AtGUS genes, like PsUGT1, exhibit localized, tissue-specific expression, mainly in areas of active cell division with possible involvement in cell cycle regulation. ..
- Xiong L, Lee H, Ishitani M, Zhu J. Regulation of osmotic stress-responsive gene expression by the LOS6/ABA1 locus in Arabidopsis. J Biol Chem. 2002;277:8588-96 pubmed..These results suggest that the level of gene induction by osmotic stress is dependent on the dosage of the zeaxanthin epoxidase enzyme. ..
- Rashotte A, Jenks M, Feldmann K. Cuticular waxes on eceriferum mutants of Arabidopsis thaliana. Phytochemistry. 2001;57:115-23 pubmed..The CER20 gene is predicted to affect the oxidation of C29 alkane to C29 secondary alcohol. Several predicted gene products affect only stem specific steps in the wax pathway. ..
- Lee H, Xiong L, Gong Z, Ishitani M, Stevenson B, Zhu J. The Arabidopsis HOS1 gene negatively regulates cold signal transduction and encodes a RING finger protein that displays cold-regulated nucleo--cytoplasmic partitioning. Genes Dev. 2001;15:912-24 pubmed..However, in response to low temperature treatments, HOS1 accumulates in the nucleus. Ectopic expression of HOS1 in wild-type plants causes cosuppression of HOS1 expression and mimics the hos1 mutant phenotypes. ..
- Choe S, Noguchi T, Fujioka S, Takatsuto S, Tissier C, Gregory B, et al. The Arabidopsis dwf7/ste1 mutant is defective in the delta7 sterol C-5 desaturation step leading to brassinosteroid biosynthesis. Plant Cell. 1999;11:207-21 pubmed..Thus, the reduction of BRs in dwf7 is due to a shortage of substrate sterols and is the direct cause of the dwarf phenotype in dwf7. ..
- Zhu J, Liu J, Xiong L. Genetic analysis of salt tolerance in arabidopsis. Evidence for a critical role of potassium nutrition. Plant Cell. 1998;10:1181-91 pubmed
- Soderlund C, Descour A, Kudrna D, Bomhoff M, Boyd L, Currie J, et al. Sequencing, mapping, and analysis of 27,455 maize full-length cDNAs. PLoS Genet. 2009;5:e1000740 pubmed publisher..The libraries, ESTs, and FLcDNA sequences produced from this project are publicly available. The annotated EST and FLcDNA assemblies are available through the maize FLcDNA web resource (www.maizecdna.org). ..
- Sidorenko L, Chandler V. RNA-dependent RNA polymerase is required for enhancer-mediated transcriptional silencing associated with paramutation at the maize p1 gene. Genetics. 2008;180:1983-93 pubmed publisher..These results demonstrate that RNA-mediated gene-silencing mechanisms play key roles in p1 paramutation and the spectrum of roles for MOP1 is broadened to include tissue-specific expression patterns. ..
- Acosta Leal R, Xiong Z. Complementary functions of two recessive R-genes determine resistance durability of tobacco 'Virgin A Mutant' (VAM) to Potato virus Y. Virology. 2008;379:275-83 pubmed publisher..Moreover, segregant plant progenies that restricted virus movement but permitted normal virus accumulation were prone to develop resistance-breaking infections. ..
- Lee B, Henderson D, Zhu J. The Arabidopsis cold-responsive transcriptome and its regulation by ICE1. Plant Cell. 2005;17:3155-75 pubmed..Our study provides a global picture of the Arabidopsis cold-responsive transcriptome and its control by ICE1 and will be valuable for understanding gene regulation under cold stress and the molecular mechanisms of cold tolerance. ..
- Sheveleva E, Giordani N, Hallick R. Identification and comparative analysis of the chloroplast alpha-subunit gene of DNA-dependent RNA polymerase from seven Euglena species. Nucleic Acids Res. 2002;30:1247-54 pubmed..This study provides new insights into the transcription system of euglenoid plastids, the organization of the plastid genome, group III intron evolution and euglenoid phylogeny...
- Winkler R, Helentjaris T. The maize Dwarf3 gene encodes a cytochrome P450-mediated early step in Gibberellin biosynthesis. Plant Cell. 1995;7:1307-17 pubmed..Analysis of D3 mRNA showed that the D3 transcript is expressed in roots, developing leaves, the vegetative meristem, and suspension culture cells. We detected reduced D3 mRNA levels in the mutant allele d3.5. ..
- Doetsch N, Thompson M, Hallick R. A maturase-encoding group III twintron is conserved in deeply rooted euglenoid species: are group III introns the chicken or the egg?. Mol Biol Evol. 1998;15:76-86 pubmed
- Hayden C, Jorgensen R. Identification of novel conserved peptide uORF homology groups in Arabidopsis and rice reveals ancient eukaryotic origin of select groups and preferential association with transcription factor-encoding genes. BMC Biol. 2007;5:32 pubmed
- Liu Z, Hong S, Escobar M, Vierling E, Mitchell D, Mount D, et al. Arabidopsis UVH6, a homolog of human XPD and yeast RAD3 DNA repair genes, functions in DNA repair and is essential for plant growth. Plant Physiol. 2003;132:1405-14 pubmed..Thus, homozygous insertions appear to be lethal. We conclude that the UVH6/AtXPD gene is required for UV resistance and is an essential gene in Arabidopsis. ..
- Kim C, Hunter B, Kraft J, Boston R, Yans S, Jung R, et al. A defective signal peptide in a 19-kD alpha-zein protein causes the unfolded protein response and an opaque endosperm phenotype in the maize De*-B30 mutant. Plant Physiol. 2004;134:380-7 pubmed..These results are consistent with the hypothesis that the De*-B30 mutation causes a defective signal peptide in a 19-kD alpha-zein protein. ..
- Grebenok R, Galbraith D, Penna D. Characterization of Zea mays endosperm C-24 sterol methyltransferase: one of two types of sterol methyltransferase in higher plants. Plant Mol Biol. 1997;34:891-6 pubmed..Sequence comparisons and functional studies of the maize, soybean and Arabidopsis cDNAs indicates two types of C-24 SMTs exist in higher plants. ..
- Nelson D, Glaunsinger B, Bohnert H. Abundant accumulation of the calcium-binding molecular chaperone calreticulin in specific floral tissues of Arabidopsis thaliana. Plant Physiol. 1997;114:29-37 pubmed..Localization of CRT in the anthers, which are degenerating at the time of maximum expression of CRT, cannot easily be reconciled with a chaperone function but may indicate a role for CRT in anther maturation or dehiscence. ..
- Holding D, Hunter B, Chung T, Gibbon B, Ford C, Bharti A, et al. Genetic analysis of opaque2 modifier loci in quality protein maize. Theor Appl Genet. 2008;117:157-70 pubmed publisher..Several of the genes are associated with ethylene and ABA signaling and suggest a potential linkage of o2 endosperm modification with programmed cell death...
- Jenkins M, Suzuki T, Mount D. Evidence that heat and ultraviolet radiation activate a common stress-response program in plants that is altered in the uvh6 mutant of Arabidopsis thaliana. Plant Physiol. 1997;115:1351-8 pubmed..We propose the UV damage and heat induce a common stress response in plants that leads to tissue death and reduced chloroplast function, and that the UVH6 product is a negative regulator of this response. ..
- Pogson B, McDonald K, Truong M, Britton G, DellaPenna D. Arabidopsis carotenoid mutants demonstrate that lutein is not essential for photosynthesis in higher plants. Plant Cell. 1996;8:1627-39 pubmed..Presumably, particular beta, beta-carotenoids are able to compensate functionally and structurally for lutein in the photosystems of Arabidopsis. ..
- Viswanathan C, Zhu J. Molecular genetic analysis of cold-regulated gene transcription. Philos Trans R Soc Lond B Biol Sci. 2002;357:877-86 pubmed..Thus HOS1 is a negative regulator, which may be functionally linked to cellular thermosensors to modulate cold-responsive gene transcription. ..
- Sabelli P, Hoerster G, Lizarraga L, Brown S, Gordon Kamm W, Larkins B. Positive regulation of minichromosome maintenance gene expression, DNA replication, and cell transformation by a plant retinoblastoma gene. Proc Natl Acad Sci U S A. 2009;106:4042-7 pubmed publisher..Our results indicate a cell cycle pathway in maize, in which 2 RBR genes have specific and opposing functions. Thus, the paradigm that RBR genes are negative cell cycle regulators cannot be considered universal...
- Sidorenko L, Dorweiler J, Cigan A, Arteaga Vazquez M, Vyas M, Kermicle J, et al. A dominant mutation in mediator of paramutation2, one of three second-largest subunits of a plant-specific RNA polymerase, disrupts multiple siRNA silencing processes. PLoS Genet. 2009;5:e1000725 pubmed publisher..Dominant mutations in the same domain in E. coli RNA polymerase suggest a model for Mop2-1 dominance: complexes containing Mop2-1 subunits are non-functional and compete with wild-type complexes...
- Xiong L, Ishitani M, Lee H, Zhu J. The Arabidopsis LOS5/ABA3 locus encodes a molybdenum cofactor sulfurase and modulates cold stress- and osmotic stress-responsive gene expression. Plant Cell. 2001;13:2063-83 pubmed..Our results show that LOS5/ABA3 is a key regulator of ABA biosynthesis, stress-responsive gene expression, and stress tolerance. ..
- Larkindale J, Vierling E. Core genome responses involved in acclimation to high temperature. Plant Physiol. 2008;146:748-61 pubmed
- Liu J, Zhu J. A calcium sensor homolog required for plant salt tolerance. Science. 1998;280:1943-5 pubmed..The results suggest that intracellular calcium signaling through a calcineurin-like pathway mediates the beneficial effect of calcium on plant salt tolerance. ..
- Ishitani M, Xiong L, Lee H, Stevenson B, Zhu J. HOS1, a genetic locus involved in cold-responsive gene expression in arabidopsis. Plant Cell. 1998;10:1151-61 pubmed