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Salt and drought stress signal transduction in plants.
Salt and drought stress signal transduction consists of ionic and osmotic homeostasis signaling pathways, detoxification (i.e., damage control and repair) response pathways, and pathways for growth
Evidence for plant stress signaling systems is summarized, some of which have components analogous to those that regulate osmotic stress responses of yeast, some that presumably function in intercellular coordination or regulation of effector genes in a cell-/tissue-specific context required for tolerance of plants.
ICE1: a regulator of cold-induced transcriptome and freezing tolerance in Arabidopsis.
The identification of ICE1 (inducer of CBF expression 1), an upstream transcription factor that regulates the transcription of CBFs genes in the cold, and its overexpression in wild-type plants enhances the expression of the CBF regulon in thecold and improves freezing tolerance of the transgenic plants.
Novel and Stress-Regulated MicroRNAs and Other Small RNAs from Arabidopsis
It is suggested that a large number of miRNAs and other small regulatory RNAs are encoded by the Arabidopsis genome and that some of them may play important roles in plant responses to environmental stresses as well as in development and genome maintenance.
Abscisic Acid Inhibits Type 2C Protein Phosphatases via the PYR/PYL Family of START Proteins
PYR/PYLs are ABA receptors functioning at the apex of a negative regulatory pathway that controls ABA signaling by inhibiting PP2Cs, illustrating the power of the chemical genetic approach for sidestepping genetic redundancy.
Cell Signaling during Cold, Drought, and Salt Stress Article, publication date, and citation information can be found at www.plantcell.org/cgi/doi/10.1105/tpc.000596.
Low temperature, drought, and high salinity are common stress conditions that adversely affect plant growth and crop production. The cellular and molecular responses of plants to environmental stress
Criteria for Annotation of Plant MicroRNAs
The specific criteria required for the annotation of plant miRNAs are updated, including experimental and computational data, as well as refinements to standard nomenclature.
The Putative Plasma Membrane Na+/H+ Antiporter SOS1 Controls Long-Distance Na+ Transport in Plants Article, publication date, and citation information can be found at
The salt tolerance locus SOS1 from Arabidopsis has been shown to encode a putative plasma membrane Na+/H+ antiporter, and a model in which SOS1 functions in retrieving Na+ from the xylem stream under severe salt stress, whereas under mild salt stress it may function in loading Na+ into the Xylem.
Methods and concepts in quantifying resistance to drought, salt and freezing, abiotic stresses that affect plant water status.
The emphasis is on experiments that quantify resistance to realistic and reproducible low water potential (drought), salt and freezing stresses while being suitable for genetic studies where a large number of lines must be analyzed.
Endogenous siRNAs Derived from a Pair of Natural cis-Antisense Transcripts Regulate Salt Tolerance in Arabidopsis
The data suggest that the P5CDH-SRO5 gene pair defines a mode of siRNA function and biogenesis that may be applied to other natural cis-antisense gene pairs in eukaryotic genomes.