Early March 2009 papers

Here are some interest papers.

Regulation of Carotenoid Composition and Shoot Branching in Arabidopsis by
a Chromatin Modifying Histone Methyltransferase, SDG8, Christopher I. Cazzonelli, Abby J. Cuttriss, Susan B. Cossetto, William Pye, Peter Crisp, Jim Whelan, E. Jean Finnegan, Colin Turnbull, and Barry J. Pogson, Plant Cell 2009;21 39-53
Lutein is a key carotenoid in plant photosynthesis and is also implicated
in limiting age-related macular degeneration of human eyes. The absence of
SET DOMAIN GROUP8 alters methylation of chromatin surrounding the
carotenoid isomerase gene, impairs lutein synthesis, and increases shoot
branching, possibly by limiting synthesis of the carotenoid-derived
branching hormone strigolactone.

Gene and Metabolite Regulatory Network Analysis of Early Developing Fruit Tissues Highlights New Candidate Genes for the Control of Tomato Fruit Composition and Development, Fabien Mounet, Annick Moing, Virginie Garcia, Johann Petit, Michael Maucourt, Catherine Deborde, Stephane Bernillon, Gwenaelle Le Gall, Ian Colquhoun, Marianne Defernez, Jean-Luc Giraudel, Dominique Rolin, Christophe Rothan, and Martine Lemaire-Chamley, Plant Physiol. 149:1505-1528.

Live cell microscopy analysis of radiation-induced DNA double-strand break motion, B. Jakob, J. Splinter, M. Durante, and G. Taucher-Scholz, PNAS 106(9):3172-3177 (March 3, 2009).

Oceanic acidification affects marine carbon pump and triggers extended marine oxygen holes, Matthias Hofmann and Hans-Joachim Schellnhuber, PNAS 106(9):3017-3022 (March 3, 2009).

PLANT SCIENCE: Anti-Rust Antitrust, D. J. Kliebenstein and H. C. Rowe, Science 323(5919):1301 - 1302 (6 March 2009).
The identification of genes that confer durable, multipathogen resistance may help breeders overcome devastating wheat fungal diseases.

A Kinase-START Gene Confers Temperature-Dependent Resistance to Wheat Stripe Rust, Daolin Fu, Cristobal Uauy, Assaf Distelfeld, Ann Blechl, Lynn Epstein, Xianming Chen, Hanan Sela, Tzion Fahima, Jorge Dubcovsky, Science 323(5919):1357 - 1360.
Several specific genes in wheat confer resistance to common fungal diseases.

A Putative ABC Transporter Confers Durable Resistance to Multiple Fungal Pathogens in Wheat, Simon G. Krattinger, Evans S. Lagudah, Wolfgang Spielmeyer, Ravi P. Singh, Julio Huerta-Espino, Helen McFadden, Eligio Bossolini, Liselotte L. Selter, and Beat Keller, Science 323(5919):1360 (6 March 2009).

Identification of novel meristem factors involved in shoot regeneration through the analysis of temperature-sensitive mutants of Arabidopsis, Hiroaki Tamaki, Mineko Konishi, Yasufumi Daimon, Mitsuhiro Aida, Masao Tasaka, Munetaka Sugiyama, The Plant Journal 57(6):1027 - 1039.

MTP1-dependent Zn sequestration into shoot vacuoles suggests dual roles in Zn tolerance and accumulation in Zn-hyperaccumulating plants, Jeffery L. Gustin, Marcello E. Loureiro, Donggiun Kim, Gunnam Na, Marina Tikhonova, David E. Salt, The Plant Journal 57(6):1116 - 1127.

Green fuels thrust, Victor Bethencourt, Nature Biotechnology 27:216 (2009).

A splicing component adapted to gene silencing, Xavier Roca & Adrian R Krainer, Nature Biotechnology 27:250 - 251 (2009).
U1 adaptors offer an alternative to siRNA for targeted gene knockdown.

Gene silencing by synthetic U1 Adaptors, Rafal Goraczniak, Mark A Behlke & Samuel I Gunderson, Nature Biotechnology 27:257 - 263 (2009).
Goraczniak et al. introduce a gene-silencing method that uses 'U1 adaptors' to block polyadenylation of pre-mRNA in the nucleus. Silencing is stronger when U1 adaptors are combined with siRNAs than when either is used alone.