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NO, hydrogen sulfide does not come first during tomato response to high salinity
- Source :
- Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual), Universidade de São Paulo (USP), instacron:USP
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- High salinity greatly impacts agriculture, particularly in tomato (Solanum lycopersicum), a crop that is a model to study this abiotic stress. This work investigated whether hydrogen sulfide (H2S) acts upstream or downstream of nitric oxide (NO) in the signaling cascade during tomato response to salt stress. An NO-donor incremented H2S levels by 12-18.9% while an H2S-donor yielded 10% more NO in roots. The NO accumulated in roots one-hour after NaCl treatment while H2S accumulation started two-hour later. The NO stimulated H2S accumulation in roots/leaves, but not the opposite (i.e H2S was unable to stimulate NO accumulation) two-hour post NaCl treatment. Also, NO accumulation was accompanied by an increment of transcript levels of genes that encode for H2S-synthesizing enzymes. Our results indicate that H2S acts downstream of NO in the mitigation of oxidative stress, which helps tomato plants to tolerate high salinity.
- Subjects :
- 0106 biological sciences
0301 basic medicine
Salinity
Cancer Research
Physiology
Hydrogen sulfide
Clinical Biochemistry
Nitric Oxide
medicine.disease_cause
Plant Roots
Salt Stress
01 natural sciences
Biochemistry
Nitric oxide
Crop
03 medical and health sciences
chemistry.chemical_compound
Solanum lycopersicum
Botany
medicine
Nitric Oxide Donors
Hydrogen Sulfide
biology
Abiotic stress
Chemistry
fungi
food and beverages
equipment and supplies
biology.organism_classification
Plant Leaves
SALINIDADE DO SOLO
030104 developmental biology
Solanum
Oxidative stress
010606 plant biology & botany
Subjects
Details
- ISSN :
- 10898603
- Volume :
- 76
- Database :
- OpenAIRE
- Journal :
- Nitric Oxide
- Accession number :
- edsair.doi.dedup.....ac04822ed05ce9657d89890aede6929a