Use of paclobutrazol as growth retardant in crops like mango , citrus and few other cops is very common....
Phytohormones that counteract or interact with ABA in inducing abiotic stresses should not be left out. Ethylene plays a role definitely and it is usually observed along with a high ABA level. The mechanisms need to be researched, though.
(PDF) Mechanisms of Waterlogging Tolerance in Plants: Research Progress and Prospects (researchgate.net)
Recent investigations have shown that phytohormones, including the classical auxins, cytokinins, ethylene, and gibberellins, and newer members including brassinosteroids, jasmonates, and strigolactones may prove to be important metabolic engineering targets for producing abiotic stress-tolerant crop plants.
Check out my review below which is open access
Article Phytohormones and their metabolic engineering for abiotic st...
Melatonin has also been reported to regulate a variety of abiotic stresses.
Dear Chandra,
Auxins, Gibberellins, Cytokinins, Ethylene, Salicylic acid, Jasmonic acid, Strigolactones, Polyamines, Brassinosteroids are more responsive towards abiotic stresses like drought, temperature, salinity, and heavy metal toxicity.
Book Phytohormones - Signaling Mechanisms and Crosstalk in Plant ...
Ajay Kumar Chandra
Dear Chandra
Found this extract from the paper link below:
"As a response to drought signal, the dosage of plant hormone ABA rises relative to stress severity and it represents a key signal in cellular response by activating the expression of different drought-responsive genes (Chaves et al., 2003). Other hormonal signals sent to the shoot through transpiration stream along with ABA upon drought perception include ethylene and Gibberellic acid (GA). Studies have revealed that these hormones invoke responses in both mature and young leaves, with ABA response in mature leaf cells and ethylene and GA response in dividing and expanding leaf cells (Skirycz et al., 2010; Verelst et al., 2010). Similarly, Jasmonic acid (JA) or Jasmonates are shown to be important cellular regulators activating signal transduction pathway between stress perception and response under drought conditions (Wasternack and Parthier, 1997; Du et al., 2013; Lee et al., 2013)"
Article Coping with drought: Stress and adaptive responses in potato...
Cytokinins; addition of Thidiazuron in induction medium prepare explants to tolerate abiotic streeses
There are many of those, for example, Melatonin, Auxins, Cytokinins, Gibberellins, Ethylene, Jasmonic acid, Salicylic acid, Polyamines, Brassinosteroids, etc.
Dear Ajay Kumar Chandra . SA, JA and ET are playing major roles in mediating plant defense response against pathogens and abiotic stresses. See the useful RG link: Article Plant hormone-mediated regulation of stress responses
Kindly see also the following useful RG links: Article Phytohormones and their metabolic engineering for abiotic st...
Article Abscisic Acid and Gibberellins Antagonistically Mediate Plan...
Article Molecular Hydrogen Is Involved in Phytohormone Signaling and...
https://www.intechopen.com/chapters/81026
https://www.intechopen.com/chapters/66714
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6214094/
Also check please the following useful RG links: Article How plants handle multiple stresses: hormonal interactions u...
Article Multiple Reaction Monitoring Mode Based Liquid Chromatograph...
https://www.nature.com/articles/s41598-021-00866-7
Article Balancing trade-offs between biotic and abiotic stress respo...
https://www.degruyter.com/document/doi/10.1515/biol-2020-0022/html?lang=en
Article Plant hormone crosstalk mediated by humic acids
https://par.nsf.gov/servlets/purl/10252284
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