Genomes and Genes
Experts and Doctors on genetically modified plants in Tucson, Arizona, United States
Locale: Tucson, Arizona, United States
Topic: genetically modified plants
- Arteaga Vazquez M, Sidorenko L, Rabanal F, Shrivistava R, Nobuta K, Green P, et al. RNA-mediated trans-communication can establish paramutation at the b1 locus in maize. Proc Natl Acad Sci U S A. 2010;107:12986-91 pubmed publisher..In addition, we uncovered a role for mop1 in the biogenesis of a subset of microRNAs (miRNAs) and show that it functions at the level of production of the primary miRNA transcripts. ..
- Gassmann A, Stock S, Carriere Y, Tabashnik B. Effect of entomopathogenic nematodes on the fitness cost of resistance to Bt toxin crylac in pink bollworm (Lepidoptera: Gelechiidae). J Econ Entomol. 2006;99:920-6 pubmed..Our results suggest that incorporation of entomopathogenic nematodes into an integrated resistance management strategy could help to delay pest resistance to Bt toxins. ..
- Carriere Y, Ellers Kirk C, Biggs R, Higginson D, Dennehy T, Tabashnik B. Effects of gossypol on fitness costs associated with resistance to Bt cotton in pink bollworm. J Econ Entomol. 2004;97:1710-8 pubmed..Better understanding of the effects of natural plant defenses on fitness costs could improve our ability to design refuges for managing insect resistance to Bt crops. ..
- Tabashnik B, Van Rensburg J, Carriere Y. Field-evolved insect resistance to Bt crops: definition, theory, and data. J Econ Entomol. 2009;102:2011-25 pubmed
- 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. ..
- Lee U, Wie C, Fernandez B, Feelisch M, Vierling E. Modulation of nitrosative stress by S-nitrosoglutathione reductase is critical for thermotolerance and plant growth in Arabidopsis. Plant Cell. 2008;20:786-802 pubmed publisher..An NO-overproducing mutant is also defective in thermotolerance. Together, our results expand the importance of GSNOR-regulated NO homeostasis to abiotic stress and plant development. ..
- Lee B, Kapoor A, Zhu J, Zhu J. STABILIZED1, a stress-upregulated nuclear protein, is required for pre-mRNA splicing, mRNA turnover, and stress tolerance in Arabidopsis. Plant Cell. 2006;18:1736-49 pubmed..Our results show that STA1 is a pre-mRNA splicing factor required not only for splicing but also for the turnover of unstable transcripts and that it has an important role in plant responses to abiotic stresses. ..
- 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. ..
- Chinnusamy V, Ohta M, Kanrar S, Lee B, Hong X, Agarwal M, et al. ICE1: a regulator of cold-induced transcriptome and freezing tolerance in Arabidopsis. Genes Dev. 2003;17:1043-54 pubmed..ICE1 is expressed constitutively, and its overexpression in wild-type plants enhances the expression of the CBF regulon in the cold and improves freezing tolerance of the transgenic plants. ..
- 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
- 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. ..
- Gong Z, Lee H, Xiong L, Jagendorf A, Stevenson B, Zhu J. RNA helicase-like protein as an early regulator of transcription factors for plant chilling and freezing tolerance. Proc Natl Acad Sci U S A. 2002;99:11507-12 pubmed..Our results identify a regulator of CBF genes, and demonstrate the importance of gene regulation and the CBF transcriptional activators in plant chilling resistance. ..
- Gassmann A, Fabrick J, Sisterson M, Hannon E, Stock S, Carriere Y, et al. Effects of pink bollworm resistance to Bacillus thuringiensis on phenoloxidase activity and susceptibility to entomopathogenic nematodes. J Econ Entomol. 2009;102:1224-32 pubmed..Incorporation of nematode-imposed fitness costs into a spatially explicit simulation model suggests that entomopathogenic nematodes in non-Bt refuges could delay resistance by pink bollworm to Bt cotton. ..
- 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. ..
- 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. ..
- Larkindale J, Hall J, Knight M, Vierling E. Heat stress phenotypes of Arabidopsis mutants implicate multiple signaling pathways in the acquisition of thermotolerance. Plant Physiol. 2005;138:882-97 pubmed
- 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. ..
- Chung T, Wang D, Kim C, Yadegari R, Larkins B. Plant SMU-1 and SMU-2 homologues regulate pre-mRNA splicing and multiple aspects of development. Plant Physiol. 2009;151:1498-512 pubmed publisher..Taken together, our data indicated that the plant SMU-1 and SMU-2 homologues appear to be involved in splicing of specific pre-mRNAs that affect multiple aspects of development...
- 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. ..
- Shi H, Quintero F, Pardo J, Zhu J. The putative plasma membrane Na(+)/H(+) antiporter SOS1 controls long-distance Na(+) transport in plants. Plant Cell. 2002;14:465-77 pubmed..We present a model in which SOS1 functions in retrieving Na(+) from the xylem stream under severe salt stress, whereas under mild salt stress it may function in loading Na(+) into the xylem. ..
- 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...