New ionic liquids based on systemic acquired resistance inducers combined with the phytotoxicity reducing cholinium cation

Abstract

Systemic acquired resistance (SAR) is one of the most promising ways to support plants in the fight against viruses.

A Novel Protein Elicitor PeBL2, from Brevibacillus laterosporus A60, Induces Systemic Resistance against Botrytis cinerea in Tobacco Plant

“…A broad range of pathogens, including numerous organisms like viruses, bacteria, nematodes, insects, fungi etc., can be resisted by non-pathogens through a process called induced systemic resistance (ISR) ( Jain et al, 2013 ; Ryu et al, 2005 ; Wu et al, 2018 ). Apparently the systemic acquired resistance is almost identical to ISR characterized by the motivation through an incompatible pathogen ( Kukawka et al, 2018 ). An extensively studied demonstrated that plant growth-promoting rhizobacteria (PGPR) consists a useful association with the plant root and the rhizosphere ( Kloeppe et al, 1999 ; Ma et al, 2018 ).…”

Recent Advances in Synthetic Chemical Inducers of Plant Immunity

“…The same plant immune inducer can be paired with surfactant-type cation for better wetting or tetrabutylammonium cation for faster dissolution. Using this strategy, 15 immunity inducers including SA, BTH, INA, BABA, etc., were paired with the cholinium cation to form ionic liquids ( Kukawka et al, 2018 ). Their abilities to induce SAR were tested using the tobacco-TMV pathosystem.…”

“…While bifunctional combination approaches have shown the potential to either improve the efficacy or reduce phytotoxicity, the introduction of the second chemical moiety has also brought more complications. For example, Pip, a SAR mobile signal candidate, showed significantly reduced SAR-inducing activity when paired with cholinium ( Kukawka et al, 2018 ). On the other hand, while isonicotinate did not induce SAR, its cholinium ionic liquid was shown to induce SAR ( Kukawka et al, 2018 ).…”

“…For example, Pip, a SAR mobile signal candidate, showed significantly reduced SAR-inducing activity when paired with cholinium ( Kukawka et al, 2018 ). On the other hand, while isonicotinate did not induce SAR, its cholinium ionic liquid was shown to induce SAR ( Kukawka et al, 2018 ). Therefore bifunctional combination is not merely the addition of the biological activities of the two chemical moieties but rather results in potentially complicated interactions between the signaling pathways induced by the two moieties.…”

Derivatives of Isonicotinic Acid as New Efficient Systemic Acquired Resistance (SAR) Inducers

“…[29] In our recent work, we reported that spraying application of nicotinic acid to tobacco plants enhances its resistance to pathogens. [30] Moreover, isonicotinic acid when transformed into the salt form became even more biologically active which resulted in 45 % diminution of quantity of necrotic spots caused by virial infection in tested model system. The main goal of this article is to examine new derivatives of isonicotinic and 2,6dichloroisonicotinic acids and find the correlation between the modification in chemical structure of amide functional group of the elicitor and its impact on biological efficiency in inducing plant resistance against pathogens.…”