Norén, Louise Kindgren, Peter Stachula, Paulina Rühl, Mark Eriksson, Maria E Hurry, Vaughan Strand, Åsa
Published in
Plant physiology
The circadian clock synchronizes a wide range of biological processes with the day/night cycle, and correct circadian regulation is essential for photosynthetic activity and plant growth. We describe here a mechanism where a plastid signal converges with the circadian clock to fine-tune the regulation of nuclear gene expression in Arabidopsis (Arab...
Tsugama, Daisuke Liu, Shenkui Takano, Tetsuo
Published in
Plant physiology
VIP1 is a bZIP transcription factor in Arabidopsis (Arabidopsis thaliana). VIP1 transiently accumulates in the nucleus when cells are exposed to hypoosmotic conditions, but its physiological relevance is unclear. This is possibly because Arabidopsis has approximately 10 close homologs of VIP1 and they function redundantly. To examine their physiolo...
Ermakova, Maria Huokko, Tuomas Richaud, Pierre Bersanini, Luca Howe, Christopher J Lea-Smith, David J Peltier, Gilles Allahverdiyeva, Yagut
Published in
Plant physiology
Various oxygen-utilizing electron sinks, including the soluble flavodiiron proteins (Flv1/3), and the membrane-localized respiratory terminal oxidases (RTOs), cytochrome c oxidase (Cox) and cytochrome bd quinol oxidase (Cyd), are present in the photosynthetic electron transfer chain of Synechocystis sp. PCC 6803. However, the role of individual RTO...
Wu, Liwen Ren, Deyong Hu, Shikai Li, Gengmi Dong, Guojun Jiang, Liang Hu, Xingming Ye, Weijun Cui, Yongtao Zhu, Li
...
Published in
Plant physiology
Premature leaf senescence affects plant growth and yield in rice. NAD plays critical roles in cellular redox reactions and remains at a sufficient level in the cell to prevent cell death. Although numerous factors affecting leaf senescence have been identified, few involving NAD biosynthetic pathways have been described for plants. Here, we report ...
Azoulay-Shemer, Tamar Bagheri, Andisheh Wang, Cun Palomares, Axxell Stephan, Aaron B Kunz, Hans-Henning Schroeder, Julian I
Published in
Plant physiology
Starch metabolism is involved in stomatal movement regulation. However, it remains unknown whether starch-deficient mutants affect CO2-induced stomatal closing and whether starch biosynthesis in guard cells and/or mesophyll cells is rate limiting for high CO2-induced stomatal closing. Stomatal responses to [CO2] shifts and CO2 assimilation rates we...
Zhao, Lifang Kunst, Ljerka
Published in
Plant physiology
ECERIFERUM7 (CER7)/AtRRP45B core subunit of the exosome, the main cellular 3'-to-5' exoribonuclease, is a positive regulator of cuticular wax biosynthesis in Arabidopsis (Arabidopsis thaliana) inflorescence stems. CER7-dependent exosome activity determines stem wax load by controlling transcript levels of the wax-related gene CER3 Characterization ...
Xing, Shuping Wallmeroth, Niklas Berendzen, Kenneth W Grefen, Christopher
Published in
Plant physiology
Identifying key players and their interactions is fundamental for understanding biochemical mechanisms at the molecular level. The ever-increasing number of alternative ways to detect protein-protein interactions (PPIs) speaks volumes about the creativity of scientists in hunting for the optimal technique. PPIs derived from single experiments or hi...
Zimmermann, Dirk Gomez-Barrera, Juan A Pasule, Christian Brack-Frick, Ursula B Sieferer, Elke Nicholson, Tim M Pfannstiel, Jens Stintzi, Annick Schaller, Andreas
Published in
Plant physiology
In contrast to mammalian matrix metalloproteinases (MMPs) that play important roles in the remodeling of the extracellular matrix in animals, the proteases responsible for dynamic modifications of the plant cell wall are largely unknown. A possible involvement of MMPs was addressed by cloning and functional characterization of Sl2-MMP and Sl3-MMP f...
Cook, Sam D Nichols, David S Smith, Jason Chourey, Prem S McAdam, Erin L Quittenden, Laura Ross, John J
Published in
Plant physiology
The biosynthesis of the main auxin in plants (indole-3-acetic acid [IAA]) has been elucidated recently and is thought to involve the sequential conversion of Trp to indole-3-pyruvic acid to IAA However, the pathway leading to a less well studied auxin, phenylacetic acid (PAA), remains unclear. Here, we present evidence from metabolism experiments t...
Choi, Kyuha Kim, Juhyun Müller, Sebastian Y Oh, Mijin Underwood, Charles Henderson, Ian Lee, Ilha
Published in
Plant physiology
The ATP-dependent SWR1 chromatin remodeling complex (SWR1-C) exchanges the histone H2A-H2B dimer with the H2A.Z-H2B dimer, producing variant nucleosomes. Arabidopsis thaliana SWR1-C contributes to the active transcription of many genes, but also to the repression of genes that respond to environmental and developmental stimuli. Unlike other higher ...
