Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Pivot Concepts:
Gene/Protein
Disease
Symptom
Drug
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Target Concepts:
Gene/Protein
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Query: KEGG:D02003 (
NBT
)
1,323
document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)
Drought is a major abiotic stress that restricts plants growth, development, and yield. Coronatine (COR), a mimic of JA-Ile, functions in plant tolerance to multiple stresses. In our study, we examined the effects of COR in tobacco under polyethylene glycol (PEG) stress. COR treatment improved plant growth under stress as measured by fresh weight (FW) and dry weight (DW). The enzyme activity assay indicated that, under osmotic stress conditions, the activities of superoxide dismutase (SOD), catalase (CAT),
ascorbate peroxidase
(
APX
), and glutathione reductase (GR) were enhanced by COR treatment. Histochemical analyses via nitrotetrazolium blue chloride (
NBT
) and 3,3'-diaminobenzidine (DAB) staining showed that COR reduced reactive oxygen species (ROS) accumulation during osmotic stress. Metabolite profiles revealed that COR triggered significant metabolic changes in tobacco leaves under osmotic stress, and many essential metabolites, such as sugar and sugar derivatives, organic acids, and nitrogen-containing compounds, which might play active roles in osmotic-stressed tobacco plants, were markedly accumulated in the COR-treated tobacco. The work presented here provides a comprehensive understanding of the COR-mediated physiological, biochemical, and metabolic adjustments that minimize the adverse impact of osmotic stress on tobacco.
...
PMID:Combining Physiological and Metabolomic Analysis to Unravel the Regulations of Coronatine Alleviating Water Stress in Tobacco (
Nicotiana tabacum
L.). 3193 6
Crop plants, such as watermelon, suffer from severe Aluminum (Al
3+
)-toxicity in acidic soils with their primary root elongation being first arrested. However, the significance of apoplastic or symplastic Al
3+
-toxicity in watermelon root is scarcely reported. In this work, we identified a medium fruit type (ZJ) and a small fruit type (
NBT
) as Al
+3
-tolerant and sensitive based on their differential primary root elongation rate respectively, and used them to show the effects of symplastic besides apoplastic Al distribution in the watermelon's root. Although the Al content was higher in the root of
NBT
than ZJ, Al
+3
allocated in their apoplast, vacuole and plastid fractions were not significantly different between the two cultivars. Thus, only a few proportion of Al
+3
differentially distributed in the nucleus and mitochondria corresponded to interesting differential morphological and physiological disorders recorded in the root under Al
+3
-stress. The symplastic amount of Al
+3
substantially induced the energy efficient catalase pathway in ZJ, and the energy consuming
ascorbate peroxidase
pathway in
NBT
. These findings coincided with obvious starch granule visibility in the root ultra-structure of ZJ than
NBT
, suggesting a differential energy was used in supporting the root elongation and nutrient uptake for Al
+3
-tolerance in the two cultivars. This work provides clues that could be further investigated in the identification of genetic components and molecular mechanisms associated with Al
+3
-tolerance in watermelon.
...
PMID:Subcellular distribution of aluminum associated with differential cell ultra-structure, mineral uptake, and antioxidant enzymes in root of two different Al
+3
-resistance watermelon cultivars. 3285 54
