FUNES PINTER mariano ivan
Bacteria and smoke-water extract improve growth and induce the synthesis of volatile defense mechanisms in Vitis vinifera L.
SALOMON, MARÍA VICTORIA; PICCOLI, PATRICIA; FUNES PINTER, IVÁN; STIRK, WENDY ANN; KULKARNI, MANOJ; VAN STADEN, JOHANNES; BOTTINI, RUBÉN
PLANT PHYSIOLOGY AND BIOCHEMISTRY
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
Año: 2017 vol. 120 p. 1 - 9
Sustainableagricultural practices have been developed as alternative to the use ofagrochemicals, and viticulture is not exempt of that. Plant growth promotingrhizobacteria (PGPR) and smoke water extracts (SW) are environmentally-friendlyalternative to those agrochemicals. The aim of this study was to investigatethe single or combined effects of SW and the PGPR Pseudomonas ﬂuorescens (Pf) and Bacillus licheniformis(Bl) on the physiology and biochemistry of grapevines plants. After 38 days,single applications of SW solutions and bacterial suspensions increase rootingand root length. Combined treatments had a slight positive effect compared tothe water control. At the end of 60-days pot trial, grapevine treated with1:1000 SW and Pf applied alone showed increases in stem length, leaf area andfresh weight of the roots, shoot and leaves, although not signiﬁcantly differences from the watercontrol were found. In addition, Pf augmented chlorophyll relative content, alltreatments decreased the stomatal conductance (mainly 1:500 SW, Pf and 1:1000SW 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 was enhanced in combined treatments. In conclusion, PGPR andSW are effective to improve growth of V. vinifera cuttings as well as toincrease the plants defense mechanisms that may help them to cope with bioticand abiotic stresses.