Nitric oxide signaling in aluminum stress in plants.

Nitric oxide signaling in aluminum stress in plants.

Protoplasma (2011-08-19)

Huyi He, Jie Zhan, Longfei He, Minghua Gu

ABSTRACT

Nitric oxide (NO) is a ubiquitous signal molecule involved in multiple plant responses to environmental stress. In the recent years, the regulating role of NO on heavy metal toxicity in plants is realized increasingly, but knowledge of NO in alleviating aluminum (Al) toxicity is quite limited. In this article, NO homeostasis between its biosynthesis and elimination in plants is presented. Some genes involved in NO/Al network and their expressions are also introduced. Furthermore, the role of NO in Al toxicity and the functions in Al tolerance are discussed. It is proposed that Al toxicity may disrupt NO homeostasis, leading to endogenous NO concentration being lower than required for root elongation in plants. There are many evidences that pointed out that the exogenous NO treatments improve Al tolerance in plants through activating antioxidative capacity to eliminate reactive oxygen species. Most of the work with respect to NO regulating pathways and functions still has to be done in the future.

MATERIALS

Product Number

Brand

Product Description

11009

Sigma-Aldrich

Aluminum, powder, ≥91% (complexometric)

IRMM523B

Aluminum, IRMM^®, certified reference material, 1.0 mm foil

433705

Sigma-Aldrich

Aluminum, evaporation slug, diam. × L 6.3 mm × 6.3 mm, 99.999% trace metals basis

326887

Sigma-Aldrich

Aluminum, wire, diam. 0.58 mm, ≥99.99% trace metals basis

326941

Sigma-Aldrich

Aluminum, pellets, 3-8 mesh, ≥99.999% trace metals basis

266558

Sigma-Aldrich

Aluminum, wire, diam. 1.0 mm, 99.999% trace metals basis

518573

Sigma-Aldrich

Aluminum, granular, <1 mm, 99.7% trace metals basis

IRMM523C

Aluminum, IRMM^®, certified reference material, 1.0 mm wire

733369

Sigma-Aldrich

Aluminum, foil, thickness 8 μm, 99% trace metals basis

GF72634103

Aluminum, rod, 50mm, diameter 28mm, as drawn, 99.999%

GF48798309

Aluminum, rod, 100mm, diameter 6.0mm, as drawn, 99.999%

GF72881297

Aluminum, microfoil, disks, 50mm, thinness 1.0μm, specific density 269.9μg/cm², permanent mylar 3.5μm support, 99.999%

GF98025239

Aluminum, tube, 100mm, outside diameter 0.55mm, inside diameter 0.4mm, wall thickness 0.075mm, as drawn, 99.5%

GF04709695

Aluminum, rod, 44mm, diameter 77.5mm, as drawn, 99.999%

GF02208923

Aluminum, tube, 200mm, outside diameter 0.86mm, inside diameter 0.76mm, wall thickness 0.05mm, as drawn, 99.5%

GF09680306

Aluminum, microfoil, disks, 25mm, thinness 0.0075μm, specific density 1.84μg/cm², permanent mylar 3.5μm support, 99.999%

GF87559420

Aluminum, tube, 0.5m coil, as drawn, outside diameter 0.30mm, inside diameter 0.2mm, wall thickness 0.05mm, 99.5%

GF09755837

Aluminum, wire reel, 100m, diameter 0.5mm, as drawn, 99.95+%

GF71298546

Aluminum, wire reel, 100m, diameter 0.063mm, annealed, 99.99%

GF49694743

Aluminum, tube, 100mm, outside diameter 0.6mm, inside diameter 0.3mm, wall thickness 0.15mm, as drawn, 99.5%

GF94706354

Aluminum, mesh, 150x150mm, nominal aperture 0.38mm, wire diameter 0.25mm, 40x40 wires/inch, open area 37%, plain weave mesh

GF93309037

Aluminum, tube, 200mm, outside diameter 1.42mm, inside diameter 1.166mm, wall thickness 0.127mm, as drawn, 99.5%

GF06197014

Aluminum, rod, 200mm, diameter 10.0mm, as drawn, 99.999%

GF54273944

Aluminum, tube, 500mm, outside diameter 0.55mm, inside diameter 0.4mm, wall thickness 0.075mm, as drawn, 99.5%

GF16562246

Aluminum, tube, 500mm, outside diameter 3.0mm, inside diameter 1.62mm, wall thickness 0.69mm, hard, 99.5%

GF12154171

Aluminum, sphere, 200pcs, diameter 6.0mm, 99%

GF95990068

Aluminum, wire reel, 100m, diameter 0.25mm, hard, 99.99+%

GF98718935

Aluminum, sphere, 100pcs, diameter 1.0mm, aluminum alloy 2017 precision sphere, grade 200, 95.2%

GF79836654

Aluminum, wire reel, 100m, diameter 0.025mm, as drawn, 99.0+%

GF51598761

Aluminum, rod, 200mm, diameter 12.7mm, 99%