Septoria nodorum

We observed the activation of chitin-specific PO during infection with the causative agents of a number of diseases in wheat under the influence of Btpolaris soroktntana and the elicitors (Fig. 4), Septoria nodorum (Yusupova et al, 2006) and Tilletia caries (Khairullin et al., 2000) in potato infected by Phytophthora infestans (Maksimov et al., 2011), and in Aegilops umbellulata infected by Septoria nodorum (Maksimov et al, 2006). 

Maksimov I. V. Gherepanova E. A. Murtazina G. F. Ghikida N. N. (2006) The relationship between the resistance of Aegilops umbellulata Zhuk, seedlings to Septoria nodorum Berk, and peroxidases isozyme pattern // Biology Bulletin. V. 33. N. 5. P. 466-470. 

For some crops there is no problem in meeting the quality standards as required for conventional seeds, but in some cases the thresholds for seedborne diseases are adjusted (Nielsen 2003 Lammerts van Bueren et al. 2003a Girsch and Weinhappel 2004). In some countries the recommended tolerances or thresholds for some diseases are lowered. In Austria, for instance, the threshold for Fusarium nivale has been adjusted from 20% in conventional agriculture to 10% for the organic sector. In the Netherlands, the level of permitted contamination in organic seed potato has been lowered from 25% (conventional) to 10%. A lower threshold is also set in other diseases, for example, in Austria, 10% is permitted for Septoria nodorum in cereals, compared with 20% previously. 

It is not phytotoxic. It does not affect the alcoholic fermentation of must (Lacroix et al, 1974). It is efficient against storage rot of apples (Bompeix et al., 1979). Combined with carbendazime it is very effective for the seed dressing of cereals. It gives excellent protection against Helminthosporium gramineum, H. avenae, H. sativum, Tilletia caries, Fusarium roseum and Septoria nodorum (Chalandon et al., 1979). 

Causes brown lesions very similar to septoria nodorum. Spots tend to be oval with a yellow halo and a dark centre. 

Wheat, barley, rye (Septoria nodorum) leaf + glume Phaeosphaeria nodorum... 

Septoria nodorum Shorea leprosula Spicaria divaricata Sporormia affinis Sporormia bipartis Sporormia griseoviridus Streptomyces mobaraensis... 

Devys, M., J.F. Bousquet, A. Kollmann, and M. Barbier Dihydroisocoumarins and Mycophenolic Acid from the Culture Medium of the Mushroom Phytopathogen, Septoria nodorum. Phytochem. 19, 2221 (1980). 

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