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Arabidopsis SGS2 and SGS3 Genes Are Required for Posttranscriptional Gene Silencing and Natural Virus Resistance
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Yap1 and Skn7 Control Two Specialized Oxidative Stress Response Regulons in Yeast*
TLDR
Remarkably, these two gene subsets separate antioxidant scavenging enzymes from the metabolic pathways regenerating the main cellular reducing power, glutathione and NADPH, and may explain, at least in part, the dissociated function of Yap1 and Skn7 in H2O2 and cadmium resistance.
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Fertile Hypomorphic ARGONAUTE (ago1) Mutants Impaired in Post-Transcriptional Gene Silencing and Virus Resistance
TLDR
It is shown that hypomorphic ago1 mutants are hypersensitive to virus infection, confirming the hypothesis that in plants PTGS is a mechanism of defense against viruses.
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The H2O2 Stimulon in Saccharomyces cerevisiae *
TLDR
This study represents the first genome-wide characterization of a H2O2-inducible stimulon in a eukaryote and results in the resetting of carbohydrate metabolism minutes after the exposure to H2 O2.
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Low phosphate activates STOP1-ALMT1 to rapidly inhibit root cell elongation
TLDR
This work genetically uncouple two Pi sensing pathways in the root apex of Arabidopsis thaliana and uncovers STOP1 and ALMT1 as a signalling pathway of low Pi availability and exuded malate as an unexpected apoplastic inhibitor of root cell wall expansion.
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A New Antioxidant with Alkyl Hydroperoxide Defense Properties in Yeast*
TLDR
The characterization of AHP1 is reported, which encodes a 19-kDa protein similar to the AhpC/TSA protein family within a small region encompassing Cys-62 of Ahp1p and the highly conserved N-terminal catalytic Ahp C/Tsa cysteine, suggesting a peroxisomal localization.
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Ionising radiation induces the expression of PARP-1 and PARP-2 genes in Arabidopsis
TLDR
A cell-type specific accumulation of AtPARP-1 protein in response to DNA damage is compatible with a role for the At PARP- 1 protein in the maintenance of DNA integrity during replication, similar to the role of "guardian of the genome" attributed to its animal counterpart.
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Transgene-induced gene silencing in plants.
TLDR
A review of transgene-induced silencing phenomena in plants and the involvement of RNA was hypothesized to explain post-transcriptional silencing in plants, fungi and nematodes.
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Molecular Cloning and Developmental Expression of AtGR1, a New Growth-Related Arabidopsis Gene Strongly Induced by Ionizing Radiation
TLDR
The results suggest that basal At GR1 levels are associated with progression through mitosis, whereas elevated intracellular levels of AtGR1 seem to induce changes between the S and M phases of the cell cycle that trigger somatic cells to enter the endoreduplication cycle.
View on BioOne
Under phosphate starvation conditions, Fe and Al trigger accumulation of the transcription factor STOP1 in the nucleus of Arabidopsis root cells
TLDR
Results indicate that, under low‐Pi conditions, Fe2/3+ and Al3+ act similarly to increase the stability of STOP1 and its accumulation in the nucleus where it activates the expression of ALMT1.
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