Abstract
Arbuscular mycorrhizal fungi (AMF) or plant symbiotic actinomycetes (PSA) play an important role in stimulating plant growth, antagonizing pathogens, tolerating stress, and controlling plant disease. However, whether there is a synergistic effect between AMF and PSA in promoting plant growth and controlling disease is worth exploring. The aim of this study was to evaluate the effects of AMF and PSA on growth-promotion and controlling disease on Solanaceae vegetables and to obtain effective AMF+PSA combinations. Under greenhouse pot conditions, chili (Capsicum annu-um, cultivar: Yangjiaojiao) and eggplant (Solanum melongena, cultivar: Heiguanchangqie) were inoculated with or without AMF Funneliformis mosseae (Fm), Glomus versiforme (Gv), PSA Streptomyces globosus H6-1, Streptomyces rochei S2-2, Streptomyces coralus D11-4 or/and pathogenic fungi Botrytis cinerea. There were a total of 48 treatments. The growth, disease and root symbiont development of plants were determined. The results showed that Fm and PSA could promote each other's colonization, while Gv and PSA inhibited each other. Compared with the control, AMF, PSA and AMF+PSA improved the photosynthetic performance, root activity, and growth of chili and eggplant. Under the condition of inoculation with pathogenic fungi, AMF and/or PSA treatment significantly increased growth and reduced the disease index of plants, with the effects of PSA being greater than that of AMF. Fm+H6-1 combination had the best effect on the growth-promotion and controlling disease of chili plants, with the controlling effect on gray mold reaching 69.1%. Fm+ D11-4 had the best effect on the growth promotion and controlling disease of eggplant, the controlling effect of which on gray mold reached 75.5%. Fm+H6-1 andFm+D11-4 were efficient combinations of chili and eggplant for promoting growth and controlling disease under the conditions of this experiment. Further tests in field are needed.
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Schedule a callMore From: Ying yong sheng tai xue bao = The journal of applied ecology
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