chemical priming
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2021 ◽  
Vol 275 ◽  
pp. 109670
Author(s):  
Romeu da Silva Leite ◽  
Marilza Neves do Nascimento ◽  
Alismário Leite da Silva ◽  
Robson de Jesus Santos

Author(s):  
Kaori Sako ◽  
Huong Mai Nguyen ◽  
Motoaki Seki

  Abiotic stress is considered a major factor limiting crop yield and quality. The development of effective strategies that mitigate abiotic stress is essential for sustainable agriculture and food security, especially with continuing global population growth. Recent studies have demonstrated that exogenous treatment of plants with chemical compounds can enhance abiotic stress tolerance by inducing molecular and physiological defense mechanisms, a process known as chemical priming. Chemical priming is believed to represent a promising strategy for mitigating abiotic stress in crop plants. Plants biosynthesize various compounds, such as phytohormones and other metabolites, to adapt to adverse environments. Research on artificially synthesized compounds has also resulted in the identification of novel compounds that improve abiotic stress tolerance. In this review, we summarize current knowledge of both naturally synthesized and artificial priming agents that have been shown to increase the abiotic stress tolerance of plants.


Author(s):  
Daiane Carvalho Baía ◽  
Fábio L. Olivares ◽  
Daniel B. Zandonadi ◽  
Cleiton de Paula Soares ◽  
Riccardo Spaccini ◽  
...  

Abstract Background Plants primed by humic acids showed physiological and molecular response against different abiotic stresses without the presence of stressor agents (salinity, drought, heavy metal toxicity). It is plausible that humic acids themselves can act as chemical priming substances in plants. We hypothesized that humic acids can trigger the weak acids stress response in cell plants acidifying the cytosol and thus eliciting the transduction signalling response cascade. Methods The dose–response curves of maize seedlings roots with different concentrations of humic, acetic and salicylic acids determined the most active and inhibitory concentration. These data were further used to evaluate changes on intracellular pH using BCECF-AM probe (2,7-bis(2-carboxyethyl)-5(and 6)-carboxyfluorescein, acetoxymethyl ester) and differential transcription level of genes related to weak stress response in plants by qPCR real time. Results Humic acids like short chain organic acids decrease the intracellular pH showed by the increased fluorescence of BCECF probe. The drop in cytosolic pH promoted by humic acids was not transient. We observed a high level of protein kinases related to cell energy-sensing and transcription factors associated to transduction of stress signalling. Conclusion The humic acids can be considered as a chemical priming agent, since in the appropriate concentration they can induce the typical plant abiotic stress response of weak acids inducing plant acclimation and enhancing the abiotic stress tolerance.


2020 ◽  
Vol 112 (6) ◽  
pp. 5002-5011
Author(s):  
Kevin Laskowski ◽  
Emily Merewitz

2020 ◽  
Vol 11 ◽  
Author(s):  
Elena Ferber ◽  
Julian Gerhards ◽  
Miriam Sauer ◽  
Markus Krischke ◽  
Marcus T. Dittrich ◽  
...  

Author(s):  
Luciano P. Canellas ◽  
Natália O. A. Canellas ◽  
Luiz Eduardo Souza da S. Irineu ◽  
Fábio L. Olivares ◽  
Alessandro Piccolo

2020 ◽  
Vol 52 (6) ◽  
Author(s):  
Shahnaz Dawar ◽  
Marium Tariq ◽  
Zamin Shaheed Siddique ◽  
Nazish Bashir

Author(s):  
Gholamreza Gohari ◽  
Zahra Alavi ◽  
Ezatollah Esfandiari ◽  
Sima Panahirad ◽  
Sedigheh Hajihoseinlou ◽  
...  

PLoS ONE ◽  
2019 ◽  
Vol 14 (5) ◽  
pp. e0210453 ◽  
Author(s):  
Xu Liu ◽  
Zhao Chen ◽  
Yani Gao ◽  
Qian Liu ◽  
Wennan Zhou ◽  
...  

2019 ◽  
Vol 38 (3) ◽  
pp. 1170-1178 ◽  
Author(s):  
Mahdi Ghiyasi ◽  
Sina Siavash Moghaddam ◽  
Reza Amirnia ◽  
Christos A. Damalas

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