Science and Technology Production

Items from Germany - Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung - IPK Gatersleben

Article

Authorship:

A. Börner ; Agacka-Moldoch, M. ; D.Z. Alomari ; M.G. Cardelli ; Ana M. Castro ; Yu.V. Chesnokov ; A.K. Chistyakova ; Marcos Dell Archiprete ; J.I. Dietz ; K. Eggert ; Fauzia ; G.S. Gerard ; Daniel Giménez ; K. Jonczyk ; U. Lohwasser ; Gladys A. Lori ; Ismael Malbrán ; E.V. Morozova ; Q.H. Muqaddasi ; M. Nagel ; S.V. Osipova ; H.M. Pardi ; A.E. Perelló ; L. Perello ; A.V. Permyakov ; M.D. Permyakova ; T.A. Pshenichnikova ; M.A. Rehman Arif ; M.S. Röder ; S.V. Rudakov ; A.S. Rudakova ; E.G. Rudikovskaya ; A.V. Rudikovsky ; Luciana Saldúa ; M. Schierenbeck ; U. Skomra ; L.V. Shchukina ; S. Shokat ; Simon, María Rosa ; A.V. Simonov ; R. Tarawneh ; J.P. Uranga ; M.E. Vicente ; N. von Wirén ; M. Yanniccari ; Chr. D. Zanke.

Date:

2017

Publishing House and Editing Place:

Kansas State University

Magazine:

Annual Wheat Newsletter, vol. 63 (pp. 8-16) Kansas State University

Summary *

Fusarium graminerarum (Fg) infests a wide range of hosts, including wheat, corn, and barley, producing yield losses, deterioration of the quality, and grain contamination with mycotoxins, which constitute a risk to human and animal health. Few sources of Fusarium head blight (FHB) resistance have been reported, and several resulted in a lack of tolerance when these lines were tested with local populations of Fg. For 8 years, several wheat recombinant and dihaploid populations were tested against a wide range of Fg strains in Argentina. We identified lines with SAR and ISR types of tolerance activated by the spray with plant hormones. In the last year, we assessed if the pretreatment with gibberellic acid (GA) and jasmonic acid (J) elicited inducible defences against Fg. Two experimental lines (M and P) and a commercial cultivar (ACA 315) were used. The trials were performed in two localities, La Plata and Tres Arroyos, Argentian, with a complete factorial design in blocks with three replicates for every treatment. At anthesis, spikes of every wheat line or cultivar were sprayed with water (control plants (C)), GA (10 -4 M), or J (10-4 M). After 48 h, half of the pretreated spikes were inoculated with Fg. Such a technique helps to highlight the mechanism of resistance to spread of the pathogen (Type-II mechanism). The following treatments were recorded: control-Fg, gibberellic-Fg, jasmonic-Fg. At harvest, spikes were maintained at room temperature until these were manually hacked. Total grain number (GT), the damaged grain (GD), and the 1,000-kernel weight (TKW) were recorded. An ANOVA included the assessment of genotype, treatment, locality, and the interactions. The mean analysis showed the gibberellic-Fg treatment significantly increased the total number of grains in both experimental lines compared with the controls and the plants treated with jasmonic acid. Experimental line M produced a higher number of GT compared to that of the commercial cultivar ACA 315; when both were treated with J these wheats presented similar GTs. The number of GD was reduced under the J treatment in line M, compared to the rest of inoculated treatments (C-Fg and G-Fg). ACA 315 showed a low number of GD when infested compared with their controls. The TKW was significantly lower in ACA315 J and J-Fg treatments. Locality influenced the TKW, with the highest values obtained in Tres Arroyos, in the experimental line P, when plants were treated with G and inoculated (G-Fg). This value was significantly higher compared with the rest of the treatments at both localities. Treatment with hormones could induce Type-II FHB tolerance in wheat lines carrying this mechanism of resistance. Information provided by the agent in SIGEVA

Key Words

QTLSFUSARIUM HEAD BLIGHT