Elicitation of IBacillus cereus/I-Amazcala in Chili Pepper Plants

Agriculture needs to decrease the use of agrochemicals due to their high toxicity and adopt new strategies to achieve sustainable food production. Therefore, nanoparticles (NPs) and plant growth-promoting bacteria (PGPB) have been proposed as viable strategies to obtain better crop yields with less...

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Published in:Plants (Basel) 2022-12, Vol.11 (24)
Main Authors: Ferrusquía-Jiménez, Noelia I, González-Arias, Beatriz, Rosales, Alicia, Esquivel, Karen, Escamilla-Silva, Eleazar M, Ortega-Torres, Adrian E, Guevara-González, Ramón G
Format: Article
Language:English
Subjects:
Agricultural research
Bacillus (Bacteria)
Bacteria
Chemical properties
Crop yields
Fertilizers
Food supply
Global temperature changes
Growth
Hot peppers
Jalapeno
Pesticides
Plant growth promoting substances
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Summary:Agriculture needs to decrease the use of agrochemicals due to their high toxicity and adopt new strategies to achieve sustainable food production. Therefore, nanoparticles (NPs) and plant growth-promoting bacteria (PGPB) have been proposed as viable strategies to obtain better crop yields with less environmental impact. Here, we describe the effect of silica nanoparticles (SiO[sub.2] -NPs) on survival, antioxidant enzymatic activity, phosphate solubilization capacity, and gibberellin production of Bacillus cereus-Amazcala (B.c-A). Moreover, the effect of the co-application of SiO[sub.2] -NPs and B.c-A on seed germination, physiological characteristics, and antioxidant enzymatic activity of chili pepper plants was investigated under greenhouse conditions. The results indicated that SiO[sub.2] -NPs at 100 ppm enhanced the role of B.c-A as PGPB by increasing its phosphate solubilization capacity and the production of GA7. Moreover, B.c-A catalase (CAT) and superoxide dismutase (SOD) activities were increased with SiO[sub.2] -NPs 100 ppm treatment, indicating that SiO[sub.2] -NPs act as a eustressor, inducing defense-related responses. The co-application of SiO[sub.2] -NPs 100 ppm and B.c-A improved chili pepper growth. There was an increase in seed germination percentage, plant height, number of leaves, and number and yield of fruits. There was also an increase in CAT and PAL activities in chili pepper plants, indicating that bacteria–NP treatment induces plant immunity.
ISSN:2223-7747
2223-7747
DOI:10.3390/plants11243445