Integration of stress systems biology with recent omics approaches would be helpful in unraveling the potential mechanisms involved in countering abiotic stresses.

1. Redox and Ionic Homeostasis
Regulations against Oxidative,
Salinity and Drought Stress in Wheat
(A Systems Biology Approach)
MUHAMMAD ARIF
16-ARID-3086
BSc (Hons) Agriculture
Shah and etal, 2017
REVIEW ARTICLE
Front. Genet., 17 October 2017 |
https://doi.org/10.3389/fgene.2017.00141
ِ‫ْم‬‫س‬ِ‫ب‬ِ‫للا‬ِ‫ْم‬‫ي‬ ِ‫ح‬َّ‫الر‬ ِ‫ن‬ ٰ‫م‬ْ‫ح‬َّ‫الر‬

2. Content.
• Introduction
• Antioxidant
systems
• Salinity tolerance
• Drought
tolerance
• Conclusion
• Future prospects

3. Introduction
• Bread wheat ranking third after maize and rice globally
• About 82–85% of the global population depends on wheat for basic
food ingredients
• Potential yield losses associated with stresses could be combated
through the selection and adaptation of cultivars with improved
genetic traits
• Elements trigger specific mechanisms in response to abiotic stress are
abscisic acid, ethylene, jasmonic acid, and salicylic acid (Stress
biology)

4. DEFENCE SYSTEMS
AGAINST ABIOTIC
STRESSES
• Genomics (DNA)
• Transcriptomics (mRNA)
• Proteomics (Translation)
• Metabolomics
(Biomolecules)
• Anti-oxidants synthesis
(ROS)
DEFENCE SYSTEMS
AGAINST ABIOTIC
STRESSES
• Genomics (DNA)
• Transcriptomics (mRNA)
• Proteomics (Translation)
• Metabolomics
(Biomolecules)
• Anti-oxidants synthesis
(ROS)

5. ANTIOXIDANT
• Enzymatic antioxidants
Glutathione reductase (GR), peroxidase (POX),
glutathione peroxidase (GPX), ascorbate
peroxidase (APX), catalase (CAT), superoxide
dismutase (SOD), dehydroascorbate reductase
(DHAR) and mono dehydroascorbate
reductase(MDHAR)
• Non-enzymatic antioxidants
Glutathione (GSH), carotenoids, tocopherol and
ascorbate (phenolic compounds )
ANTIOXIDANT
• Enzymatic antioxidants
Glutathione reductase (GR), peroxidase (POX),
glutathione peroxidase (GPX), ascorbate
peroxidase (APX), catalase (CAT), superoxide
dismutase (SOD), dehydroascorbate reductase
(DHAR) and mono dehydroascorbate
reductase(MDHAR)
• Non-enzymatic antioxidants
Glutathione (GSH), carotenoids, tocopherol and
ascorbate (phenolic compounds )

6. Salinity Tolerance Mechanism
• Stress Genes
Regulation
Upregulation
Downregulation
• Signaling
(Biomolecules)
• Physiological
Salt exclusion
Compartmentalization

8. Drought Tolerance:
• Gene Expression
• Signaling
Proline , abscisic acid , Ca-
signaling
• Regulation Prototype

9. Conclusion
• Integration of stress
systems biology with
recent omics approaches
would be helpful in
unraveling the potential
mechanisms involved in
countering abiotic
stresses.

10. Future prospects
This would provide a robust and focused dimension to crop improvement
programs.
To better understand the mechanisms that operate at a cellular level to
mitigate drought stess