Characterization of aggregates produced by the potential mycoherbistat Plectosporium alismatis in submerged culture: germination, UVradiation tolerance and infectivity - Université de Bretagne Occidentale Access content directly
Journal Articles Biocontrol Science and Technology Year : 2011

Characterization of aggregates produced by the potential mycoherbistat Plectosporium alismatis in submerged culture: germination, UVradiation tolerance and infectivity

Abstract

Plectosporium alismatis, a potential mycoherbistat of Alismatacae spp., has been previously shown to produce aggregates which contain chlamydospores in liquid culture. Weevaluated the impact of medium composition on the formation and composition of aggregates. In shake flasks cultures using 5.74 gL 1 sodium nitrate, 8.8 gL 1 malt extract or glucose and 0.1% Tween 80, P. alismatis formed small, uniform (diameter of 75% aggregates B720 mm), dense, melanised aggregates containing 104 conidia and 103 chlamydospores, these numbers remained unchanged during growth. All 7-day-old aggregates exposed to desiccation or/ and UV-radiation germinated. In bioassays using leaf discs of Alisma plantago-aquatica, P. alismatis aggregates caused necrosis, regardless of whether aggregates had been exposed to desiccation and/or UV-radiation prior to application on leaf discs, whereas other propagules (103 propagules disc 1) exposed to drying and UV-radiation stress were unable to cause necrosis. This preliminary research shows the potential of aggregates to be used as part of a formulation of biocontrol agents, provided adequate conditions for optimal aggregate yields are found.
Fichier principal
Vignette du fichier
BST_characterization_of_aggregates_entier_Cliquet_et_aL._CBST_2011_HAL.pdf (482.17 Ko) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-00728789 , version 1 (07-09-2012)

Identifiers

Cite

Sophie Cliquet, Julien Despreaux, Kashif Zeeshan, Denis de La Broise, Gavin Ash. Characterization of aggregates produced by the potential mycoherbistat Plectosporium alismatis in submerged culture: germination, UVradiation tolerance and infectivity. Biocontrol Science and Technology, 2011, 21 (10), pp.1243-1256. ⟨10.1080/09583157.2011.604124⟩. ⟨hal-00728789⟩
204 View
1106 Download

Altmetric

Share

Gmail Facebook X LinkedIn More