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Major alterations of the regulation of root NO(3)(-) uptake are associated with the mutation of Nrt2.1 and Nrt2.2 genes in Arabidopsis.
TLDR
It is shown that the residual HATS activity in atnrt2 plants is not inducible by NO(3)(-), indicating that the mutant is more specifically impaired in the inducable component of the HATS.
Regulation of Root Ion Transporters by Photosynthesis: Functional Importance and Relation with Hexokinase Article, publication date, and citation information can be found at
TLDR
The results indicate that the induction of AtNrt2.1 expression by sugars is unrelated to the main signaling mechanisms documented for sugar sensing in plants, such as regulation by sucrose, hexose transport, and hexokinase (HXK) sensing activity.
Targeting novel chemical and constitutive primed metabolites against Plectosphaerella cucumerina.
TLDR
It is demonstrated that indole-3-carboxylic acid induces resistance by promoting papillae deposition and H2 O2 production, and that this is independent of PR1, VSP2 and PDF1.2 priming.
Fine tuning of reactive oxygen species homeostasis regulates primed immune responses in Arabidopsis.
TLDR
Analysis of Arabidopsis mutants in reactive oxygen species (ROS) production or ROS scavenging suggested a regulatory role for ROS homeostasis in priming of chitosan- and P. cucumerina-inducible callose and ROS, and measuring ratios between reduced and oxidized glutathione confirmed that augmented defense expression in primed plants is associated with a more oxidized cellular status.
Characterization and regulation of ammonium transport systems in Citrus plants
TLDR
Investigation of kinetics and regulation of 15NH4+ influx in roots of 3-month-old hydroponically grown Citrus seedlings provides evidence that in Citrus plants, the LATS or at least one of its components is inducible by NH4+.
A Deletion in NRT2.1 Attenuates Pseudomonas syringae-Induced Hormonal Perturbation, Resulting in Primed Plant Defenses1[C][W]
TLDR
The reduced susceptibility of nrt2 mutants seems to be a combination of priming of salicylic acid-dependent defenses and reduced sensitivity to the bacterial effector coronatine.
Disruption of the ammonium transporter AMT1.1 alters basal defenses generating resistance against Pseudomonas syringae and Plectosphaerella cucumerina
TLDR
It is demonstrated that the high-affinity ammonium transporter AMT1.1 is a negative regulator of Arabidopsis defense responses and shows altered levels of aliphatic and indolic glucosinolates and other Trp-related compounds following infection by the necrotroph.
Ammonium transport and CitAMT1 expression are regulated by light and sucrose in Citrus plants.
TLDR
Results show that in Citrus plants, the HATS is much more dependent on the light conditions and C status of the roots than the low-affinity transport system, and results indicate that the effect of stimulating light on CitAMT1 expression and NH(4)(+) HATS activity is independent of the circadian rhythm.
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