Method and timing of rhizobacteria inoculation to plant roots alters success and strength of aphid suppression

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: July 31, 2024

Abstract Insect pests cause substantial yield losses globally, necessitating novel pest control approaches beyond chemical pesticides. Rhizobacteria, beneficial root-associated bacteria, present a promising alternative by enhancing plant growth and defences against pests. This study explores the use of sodium alginate encapsulation for precise inoculation two rhizobacteria, Acidovorax radicis Bacillus subtilis , to suppress aphid populations on barley ( Hordeum vulgare ). We optimized method using 4mm diameter wet-matrix beads controlled bacterial delivery directly roots. Two experiments evaluated impact methods timing suppression. Results indicated that rhizobacteria via at root emergence significantly reduced reproductive output, outperforming seed soaking methods. suggests more consistent establishment prolonged release from enhances defence priming. Additionally, bead demonstrated effective long-term viability following storage 4° C eight months, supporting potential field application. Our findings highlight bead-encapsulated suppression barley, but emphasizing need placement. approach offers robust empirical research practical agricultural application, paving way sustainable management strategies. Future work should focus optimizing formulations understanding plant-microbe interactions enhance efficacy.

Language: Английский

Two Sphingomonas species modify the productivity and the susceptibility of Pisum sativum to pea aphid, Acyrthosiphon pisum

Plant Stress, Journal Year: 2024, Volume and Issue: unknown, P. 100703 - 100703

Published: Dec. 1, 2024

Language: Английский