Effects of Different Microbial Inocula on Tomato Tolerance to Water Deficit

Agronomy

Walter Chitarra¹  Luca Nerva¹  Mnasri Bacem²  Takoua Gritli²  Mara Novero³  Valentina Fiorilli³  Giuseppe Mannino³  CinziaMargherita Bertea³  Raffaella Balestrini⁴  Erica Lumini⁴ 

[1] Council for Agricultural Research and Economics - Research Centre for Viticulture and Enology CREA-VE, 31015 Conegliano (TV), Italy;Laboratory of Legumes, Centre of Biotechnology of Borj-Cedria, BP 901, Hammam-lif 2050, Tunisia;Life Sciences and Systems Biology Department, University of Torino, 10125 Torino (TO), Italy;National Research Council, Institute for Sustainable Plant Protection, 10125 Torino (TO), Italy;

关键词: tomato;    am fungi;    pgpb;    water deficit;    biostimulant;   

DOI  :  10.3390/agronomy10020170

来源: DOAJ

【 摘 要 】

Several recent reports have highlighted some of the mechanisms involved in the enhanced tolerance to abiotic stresses induced by root-associated microorganisms, although additional efforts are still required to exploit and optimize these strategies. Particularly, arbuscular mycorrhizal fungi (AMF) play an important role as “bio-fertilizing microorganisms”, establishing mutualistic symbioses with the roots of most crops. In this work, different microbial inocula (a single AMF species, a combination of three different AMF species, a combination of two plant growth-promoting bacteria (PGPB) strains and a more complex commercial inoculum) have been used to inoculate tomato plants (cv San Marzano nano), in order to verify their effects on the tolerance to a water deficit condition in pots, through the evaluation of biochemical stress markers and hormonal profiles (ABA and IAA). Results showed differences among tomato responses to water limitation depending on microbial inocula, confirming the importance to characterize the optimal plant/microorganism genotype combination(s) to maximize plant performance and tolerance. These findings open new perspectives for a better exploitation of these microorganisms.

【 授权许可】

Unknown