TY  - JOUR
A1  - Lisso, Janina
A1  - Altmann, Thomas
A1  - Müssig, Carsten
T1  - The AtNFXL1 gene encodes a NF-X1 type zinc finger protein required for growth under salt stress
JF  - FEBS letters : the journal for rapid publication of short reports in molecular biosciences
N2  - The human NF-X1 protein and homologous proteins in eukaryotes represent a class of transcription factors which are characterised. by NF-X1 type zinc finger motifs. The Arabidopsis genome encodes two NF-X1 homologs, which we termed AtNFXL1 and AtNFXL2. Growth and survival was impaired in atnfxl1 knock-out mutants and AtNFXL1-antisense plants under salt stress in comparison to wild-type plants. In contrast, 35S: :AtNFXL1 plants showed higher survival rates. The AtNFXL2 protein potentially plays an antagonistic role. The Arabidopsis NF-X1 type zinc finger proteins likely are part of regulatory mechanisms, which protect major processes such as photosynthesis.
KW  - Arabidopsis thaliana
KW  - NF-X1
KW  - salt stress
Y1  - 2006
U6  - https://doi.org/10.1016/j.febslet.2006.07.079
SN  - 0014-5793
VL  - 580
IS  - 22
SP  - 4851
EP  - 4856
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Meyer, Rhonda C.
A1  - Witucka-Wall, Hanna
A1  - Becher, Martina
A1  - Blacha, Anna Maria
A1  - Boudichevskaia, Anastassia
A1  - Dörmann, Peter
A1  - Fiehn, Oliver
A1  - Friedel, Svetlana
A1  - von Korff, Maria
A1  - Lisec, Jan
A1  - Melzer, Michael
A1  - Repsilber, Dirk
A1  - Schmidt, Renate
A1  - Scholz, Matthias
A1  - Selbig, Joachim
A1  - Willmitzer, Lothar
A1  - Altmann, Thomas
T1  - Heterosis manifestation during early Arabidopsis seedling development is characterized by intermediate gene expression and enhanced metabolic activity in the hybrids
JF  - The plant journal
N2  - Heterosis-associated cellular and molecular processes were analyzed in seeds and seedlings of Arabidopsis thaliana accessions Col-0 and C24 and their heterotic hybrids. Microscopic examination revealed no advantages in terms of hybrid mature embryo organ sizes or cell numbers. Increased cotyledon sizes were detectable 4 days after sowing. Growth heterosis results from elevated cell sizes and numbers, and is well established at 10 days after sowing. The relative growth rates of hybrid seedlings were most enhanced between 3 and 4 days after sowing. Global metabolite profiling and targeted fatty acid analysis revealed maternal inheritance patterns for a large proportion of metabolites in the very early stages. During developmental progression, the distribution shifts to dominant, intermediate and heterotic patterns, with most changes occurring between 4 and 6 days after sowing. The highest incidence of heterotic patterns coincides with establishment of size differences at 4 days after sowing. In contrast, overall transcript patterns at 4, 6 and 10 days after sowing are characterized by intermediate to dominant patterns, with parental transcript levels showing the largest differences. Overall, the results suggest that, during early developmental stages, intermediate gene expression and higher metabolic activity in the hybrids compared to the parents lead to better resource efficiency, and therefore enhanced performance in the hybrids.
KW  - heterosis
KW  - seedlings
KW  - metabolite profiling
KW  - transcript profiling
KW  - morphological analysis
KW  - Arabidopsis thaliana
KW  - biomass
Y1  - 2012
U6  - https://doi.org/10.1111/j.1365-313X.2012.05021.x
SN  - 0960-7412
VL  - 71
IS  - 4
SP  - 669
EP  - 683
PB  - Wiley-Blackwell
CY  - Hoboken
ER  -