Bacteria and smoke-water extract improve growth and induce the synthesis of volatile defense mechanisms in Vitis vinifera L.

BOTTINI, RUBÉN; STIRK, WENDY ANN; SALOMON, MARÍA VICTORIA; KULKARNI, MANOJ; PICCOLI, PATRICIA; VAN STADEN, JOHANNES; FUNES PINTER, IVÁN; KULKARNI, MANOJ; BOTTINI, RUBÉN; PICCOLI, PATRICIA; STIRK, WENDY ANN; VAN STADEN, JOHANNES; SALOMON, MARÍA VICTORIA; FUNES PINTER, IVÁN

PLANT PHYSIOLOGY AND BIOCHEMISTRY

ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER

Lugar: Paris; Año: 2017 vol. 120 p. 1 - 9

0981-9428

Sustainable agricultural practices have been developed as alternative to the use of agrochemicals, andviticulture is not exempt of that. Plant growth promoting rhizobacteria (PGPR) and smoke water extracts(SW) are environmentally-friendly alternative to those agrochemicals. The aim of this study was toinvestigate the single or combined effects of SW and the PGPR Pseudomonas fluorescens (Pf) and Bacilluslicheniformis (Bl) on the physiology and biochemistry of grapevines plants. After 38 days, single applicationsof SWsolutions and bacterial suspensions increase rooting and root length. Combined treatmentshad a slight positive effect compared to the water control. At the end of 60-days pot trial, grapevinetreated with 1:1000 SWand Pf applied alone showed increases in stem length, leaf area and fresh weightof the roots, shoot and leaves, although not significantly differences from the water control were found.In addition, Pf augmented chlorophyll relative content, all treatments decreased the stomatal conductance(mainly 1:500 SW, Pf and 1:1000 SW þ Bl), as well as lipid peroxidation in roots (mainly in bacterialtreatments), and induced the synthesis of mono and sesquiterpenes in leaves, where the effect wasenhanced in combined treatments. In conclusion, PGPR and SW are effective to improve growth ofV. vinifera cuttings as well as to increase the plants defense mechanisms that may help them to cope withbiotic and abiotic stresses.