AHL-priming for enhanced resistance as a tool in sustainable agriculture

Abstract

Bacteria communicate with each other through quorum sensing (QS) molecules. N-acyl homoserine lactones (AHL) are one of the most extensively studied groups of QS molecules. The role of AHL molecules is not limited to interactions between bacteria; they also mediate inter-kingdom interaction with eukaryotes. The perception mechanism of AHL is well-known in bacteria, and several proteins have been proposed as putative receptors in mammalian cells. However, not much is known about the perception of AHL in plants. Plants generally respond to short-chained AHL with modification in growth, while long-chained AHL induce AHL-priming for enhanced resistance. Since plants may host several AHL-producing bacteria and encounter multiple AHL at once, a coordinated response is required. The effect of the AHL combination showed relatively low impact on growth but enhanced resistance. Microbial consortium of bacterial strains that produce different AHL could therefore be an interesting approach in sustainable agriculture. Here, we review the molecular and genetical basis required for AHL perception. We highlight recent advances in the field of AHL-priming. We also discuss the recent discoveries on the impact of combination(s) of multiple AHL on crop plants and the possible use of this knowledge in sustainable agriculture.

Use of Acyl-Homoserine Lactones Leads to Improved Growth of Ginseng Seedlings and Shifts in Soil Microbiome Structure

“…While Liu et al [34] observed that AHLs with short side chains stimulate root length and antioxidative capacities in barley leaves [35]. A review done by Shrestha and Schikora [15] explains that there are 'AHL-primable' and 'AHL-non-primable' types depending on the response of plants through AHL priming. It has yet to be seen whether ginseng is a possible 'AHL-primable' crop, although our phenotypic results proved to be an excellent example of good ginseng growth when treated with AHLs, as can be determined by the data presented in Figure 1 and Table 1.…”

“…Quorum sensing (QS) is a process through which bacteria attain intercellular communication. The production and detection of autoinducer signaling molecules make it possible for bacteria to observe cell density and coordinate behavioral changes collectively [15]. Signaling molecules allow for gene regulation to occur within the population, allowing the bacterial community to regulate cellular processes-such as biofilm formation, motility, sporulation, and virulence-which are important for survival and adaptation in the environment [16].…”

АЦИЛГОМОСЕРИНЛАКТОНЫ КАК РЕГУЛЯТОРЫ УРОЖАЙНОСТИ И СТРЕССОУСТОЙЧИВОСТИ СЕЛЬСКОХОЗЯЙСТВЕННЫХ КУЛЬТУР (Обзор)

“…С6-АГЛ способны стимулировать процессы роста и корнеобразования (90,98,99), а также индуцировать системную устойчивость к широкому спектру патогенов у многих видов растений (100). Таким образом, различные исследования продемонстрировали, что бактериальные АГЛ могут быть использованы для улучшения роста и повышения урожайности растений, снижения зависимости от фунгицидов и удобрений, для борьбы с патогенами и стрессорами (101).…”

ACYL-HOMOSERINE LACTONES FOR CROP PRODUCTION AND STRESS TOLERANCE OF AGRICULTURAL PLANTS (review)

“…С6-АГЛ способны стимулировать процессы роста и корнеобразования (90,98,99), а также индуцировать системную устойчивость к широкому спектру патогенов у многих видов растений (100). Таким образом, различные исследования продемонстрировали, что бактериальные АГЛ могут быть использованы для улучшения роста и повышения урожайности растений, снижения зависимости от фунгицидов и удобрений, для борьбы с патогенами и стрессорами (101).…”