Genomes and Genes
Experts and Doctors on arabidopsis in Western Australia, Australia
Locale: Western Australia, Australia
- Huang S, Taylor N, Whelan J, Millar A. Refining the definition of plant mitochondrial presequences through analysis of sorting signals, N-terminal modifications, and cleavage motifs. Plant Physiol. 2009;150:1272-85 pubmed publisher..Our data also suggest a novel cleavage motif of (F/Y) downward arrow(S/A) in plant class III sequences. ..
- Considine M, Holtzapffel R, Day D, Whelan J, Millar A. Molecular distinction between alternative oxidase from monocots and dicots. Plant Physiol. 2002;129:949-53 pubmed
- Che P, Bussell J, Zhou W, Estavillo G, Pogson B, Smith S. Signaling from the endoplasmic reticulum activates brassinosteroid signaling and promotes acclimation to stress in Arabidopsis. Sci Signal. 2010;3:ra69 pubmed publisher..Thus, these bZIPs link ER stress and BR signaling, which may be a mechanism by which plant growth and stress responses can be integrated. ..
- Giraud E, Van Aken O, Ho L, Whelan J. The transcription factor ABI4 is a regulator of mitochondrial retrograde expression of ALTERNATIVE OXIDASE1a. Plant Physiol. 2009;150:1286-96 pubmed publisher..Furthermore, they provide a molecular link between mitochondrial and chloroplast retrograde signaling, as ABI4 has been previously shown to act downstream of at least two chloroplast retrograde signaling pathways. ..
- Pracharoenwattana I, Smith S. When is a peroxisome not a peroxisome?. Trends Plant Sci. 2008;13:522-5 pubmed publisher..Future research is best served by focusing on the common features of peroxisomes to establish how these dynamic organelles contribute to energy metabolism, development and responses to environmental challenges...
- Carrie C, Murcha M, Kuehn K, Duncan O, Barthet M, Smith P, et al. Type II NAD(P)H dehydrogenases are targeted to mitochondria and chloroplasts or peroxisomes in Arabidopsis thaliana. FEBS Lett. 2008;582:3073-9 pubmed publisher..Targeting of ND proteins to mitochondria and peroxisomes is achieved by two separate signals, a C-terminal signal for peroxisomes and an N-terminal signal for mitochondria. ..
- Chateigner Boutin A, Small I. A rapid high-throughput method for the detection and quantification of RNA editing based on high-resolution melting of amplicons. Nucleic Acids Res. 2007;35:e114 pubmed..This new method will be easily applicable to RNA from any organism and should greatly accelerate the study of the role of RNA editing in physiological processes as diverse as plant development or human health. ..
- Thatcher L, Carrie C, Andersson C, Sivasithamparam K, Whelan J, Singh K. Differential gene expression and subcellular targeting of Arabidopsis glutathione S-transferase F8 is achieved through alternative transcription start sites. J Biol Chem. 2007;282:28915-28 pubmed
- Lambers H, Cawthray G, Giavalisco P, Kuo J, Laliberté E, Pearse S, et al. Proteaceae from severely phosphorus-impoverished soils extensively replace phospholipids with galactolipids and sulfolipids during leaf development to achieve a high photosynthetic phosphorus-use-efficiency. New Phytol. 2012;196:1098-108 pubmed publisher..thaliana. Our results clearly show that a low investment in phospholipids, relative to nonphospholipids, offers a partial explanation for a high photosynthetic rate per unit leaf P in Proteaceae adapted to P-impoverished soils...
- Murcha M, Elhafez D, Millar A, Whelan J. The C-terminal region of TIM17 links the outer and inner mitochondrial membranes in Arabidopsis and is essential for protein import. J Biol Chem. 2005;280:16476-83 pubmed..Together these results indicate that the C-terminal region of AtTIM17-2 is exposed on the outer surface of the outer membrane, and the C-terminal region is essential for protein import into mitochondria. ..
- Ng S, Giraud E, Duncan O, Law S, Wang Y, Xu L, et al. Cyclin-dependent kinase E1 (CDKE1) provides a cellular switch in plants between growth and stress responses. J Biol Chem. 2013;288:3449-59 pubmed publisher..Together, these results place CDKE1 as a central kinase integrating diverse cellular signals and shed light on a mechanism by which plants can effectively switch between growth and stress responses. ..
- Waters M, Brewer P, Bussell J, Smith S, Beveridge C. The Arabidopsis ortholog of rice DWARF27 acts upstream of MAX1 in the control of plant development by strigolactones. Plant Physiol. 2012;159:1073-85 pubmed publisher..By identifying an additional component of the canonical SL biosynthesis pathway in Arabidopsis, we provide a new tool to investigate the regulation of shoot branching and other SL-dependent developmental processes. ..
- Waters M, Smith S. KAI2- and MAX2-mediated responses to karrikins and strigolactones are largely independent of HY5 in Arabidopsis seedlings. Mol Plant. 2013;6:63-75 pubmed publisher..These results suggest that KAI2 and MAX2 define a regulatory pathway that largely operates independently of HY5 to mediate seedling responses to abiotic signals such as smoke and light. ..
- HaÃ¯li N, Planchard N, Arnal N, Quadrado M, Vrielynck N, Dahan J, et al. The MTL1 Pentatricopeptide Repeat Protein Is Required for Both Translation and Splicing of the Mitochondrial NADH DEHYDROGENASE SUBUNIT7 mRNA in Arabidopsis. Plant Physiol. 2016;170:354-66 pubmed publisher..MTL1 will be instrumental to understand the multifunctionality of PPR proteins and the mechanisms governing mRNA translation and intron splicing in plant mitochondria. ..
- Chen W, Chi Y, Taylor N, Lambers H, Finnegan P. Disruption of ptLPD1 or ptLPD2, genes that encode isoforms of the plastidial lipoamide dehydrogenase, confers arsenate hypersensitivity in Arabidopsis. Plant Physiol. 2010;153:1385-97 pubmed publisher..These findings show that the ptLPD isoforms are critical in vivo determinants of arsenite-mediated arsenic sensitivity in Arabidopsis and possible strategic targets for increasing arsenic tolerance...
- Lister R, Chew O, Lee M, Heazlewood J, Clifton R, Parker K, et al. A transcriptomic and proteomic characterization of the Arabidopsis mitochondrial protein import apparatus and its response to mitochondrial dysfunction. Plant Physiol. 2004;134:777-89 pubmed..These findings suggest that transcription of import component genes is induced when mitochondrial function is limited and that minor gene isoforms display a greater response than the predominant isoforms. ..
- Taylor N, Heazlewood J, Day D, Millar A. Lipoic acid-dependent oxidative catabolism of alpha-keto acids in mitochondria provides evidence for branched-chain amino acid catabolism in Arabidopsis. Plant Physiol. 2004;134:838-48 pubmed..The potential role of branched-chain amino acid catabolism as an oxidative phosphorylation energy source or as a detoxification pathway during plant stress is discussed. ..
- Foley R, Sappl P, Perl Treves R, Millar A, Singh K. Desensitization of GSTF8 induction by a prior chemical treatment is long lasting and operates in a tissue-dependent manner. Plant Physiol. 2006;142:245-53 pubmed..Treatment with a phosphatase inhibitor prevents desensitization of GSTF8 expression and ocs element activity, suggesting that dephosphorylation of one or more proteins is required for desensitization to occur. ..
- Oñate Sánchez L, Anderson J, Young J, Singh K. AtERF14, a member of the ERF family of transcription factors, plays a nonredundant role in plant defense. Plant Physiol. 2007;143:400-9 pubmed..These results suggest a unique role for AtERF14 in regulating the plant defense response. ..
- Lister R, Carrie C, Duncan O, Ho L, Howell K, Murcha M, et al. Functional definition of outer membrane proteins involved in preprotein import into mitochondria. Plant Cell. 2007;19:3739-59 pubmed publisher..Thus, it is proposed that all three components directly interact with precursor proteins to participate in early stages of mitochondrial protein import...
- Guo K, Babourina O, Christopher D, Borsics T, Rengel Z. The cyclic nucleotide-gated channel, AtCNGC10, influences salt tolerance in Arabidopsis. Physiol Plant. 2008;134:499-507 pubmed publisher..Mature A2 and A3 plants became more salt sensitive than wild-type plants because of impaired photosynthesis induced by a higher Na+ concentration in the leaves. ..
- Ho L, Giraud E, Uggalla V, Lister R, Clifton R, Glen A, et al. Identification of regulatory pathways controlling gene expression of stress-responsive mitochondrial proteins in Arabidopsis. Plant Physiol. 2008;147:1858-73 pubmed publisher..Furthermore, posttranscriptional regulation accounts for changes in transcript abundance by SA treatment for some genes. ..
- Tanz S, Kilian J, Johnsson C, Apel K, Small I, Harter K, et al. The SCO2 protein disulphide isomerase is required for thylakoid biogenesis and interacts with LHCB1 chlorophyll a/b binding proteins which affects chlorophyll biosynthesis in Arabidopsis seedlings. Plant J. 2012;69:743-54 pubmed publisher..Therefore, we propose that SCO2 is involved in the integration of LHCB1 proteins into the thylakoids that feeds back on the regulation of the tetrapyrrole biosynthetic pathway and nuclear gene expression. ..
- Murcha M, Elhafez D, Lister R, Tonti Filippini J, Baumgartner M, Philippar K, et al. Characterization of the preprotein and amino acid transporter gene family in Arabidopsis. Plant Physiol. 2007;143:199-212 pubmed
- Millar A, Eubel H, Jänsch L, Kruft V, Heazlewood J, Braun H. Mitochondrial cytochrome c oxidase and succinate dehydrogenase complexes contain plant specific subunits. Plant Mol Biol. 2004;56:77-90 pubmed
- Van Aken O, Zhang B, Law S, Narsai R, Whelan J. AtWRKY40 and AtWRKY63 modulate the expression of stress-responsive nuclear genes encoding mitochondrial and chloroplast proteins. Plant Physiol. 2013;162:254-71 pubmed publisher..In conclusion, this study establishes the role of WRKY transcription factors in the coordination of stress-responsive genes encoding mitochondrial and chloroplast proteins. ..
- Chew O, Whelan J, Millar A. Molecular definition of the ascorbate-glutathione cycle in Arabidopsis mitochondria reveals dual targeting of antioxidant defenses in plants. J Biol Chem. 2003;278:46869-77 pubmed..Together these data present a model of an integrated ascorbate-glutathione antioxidant defense common to plastids and mitochondria that is linked at the level of the genome in Arabidopsis. ..
- Carrie C, Giraud E, Duncan O, Xu L, Wang Y, Huang S, et al. Conserved and novel functions for Arabidopsis thaliana MIA40 in assembly of proteins in mitochondria and peroxisomes. J Biol Chem. 2010;285:36138-48 pubmed publisher..Thus, the mechanistic operation of the mitochondrial disulfide relay system is different in A. thaliana compared with other systems, and Mia40 has taken on new roles in peroxisomes and mitochondria. ..