File:Schematic representation of the signalling pathway leading to the plant response to abiotic stresses.png
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DescriptionSchematic representation of the signalling pathway leading to the plant response to abiotic stresses.png |
English: Specific receptors in the plasma membrane perceive the external stress signal and transmit the signal intracellularly through phytohormones and secondary messengers, such as calcium (Ca2+) and reactive oxygen species (ROS). The second messengers activate different classes of protein kinases, including mitogen-activated protein kinase (MAPK) cascade, calcium-dependent protein kinases (CDPKs), and calcineurin-B-like proteins-interacting protein kinases (CIPKs), and protein phosphatases, such as protein tyrosine phosphatases/dual-specificity phosphatases (PTPs/DSPs), protein phosphatases 2C (PP2Cs), and serine/threonine-specific protein phosphatases (PPPs). Subsequently, the protein kinases and phosphatases catalyze the phosphorylation/dephosphorylation of transcription factors, including APETALA2/ethylene response element-binding factors (AP2/ERF), the large NAC family, basic leucine zipper (bZIP), WRKY, and MYB. These finally regulate the expression of abiotic stress-responsive genes encoding heat shock proteins (HSPs) and other chaperones, late embryogenesis abundant (LEA) proteins, enzymes involved in the biosynthesis of osmolytes, antioxidant enzymes and enzymes involved in the biosynthesis of small antioxidant molecules, aquaporins and ion transporters, which contribute to the tolerance of wheat to abiotic stresses. |
Date | |
Source | https://www.mdpi.com/2223-7747/11/23/3358 |
Author | Trono, Daniela, and Nicola Pecchioni |
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current | 21:55, 28 December 2023 | 4,000 × 2,160 (1.87 MB) | DoctorNaturopath (talk | contribs) | Uploaded a work by Trono, Daniela, and Nicola Pecchioni from https://www.mdpi.com/2223-7747/11/23/3358 with UploadWizard |
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