Frost De-acclimation of Barley (Hordeum vulgare L.) and Meadow Fescue (Festuca pratensis Huds.). Relationship between Soluble Carbohydrate Content and Resistance to Frost and the Fungal PathogenBipolaris sorokiniana (Sacc.) Shoem.

Induction of resistance to root rot disease of wheat grown under field condition

“…This indicates that these compounds encourage the capability of plant to resist drought (Schkalikov et al 1994). In the other hand, Rapacz et al (2000) concluded that resistance of barley and meadow fescue to fungal pathogen (Bipolaris sorokiniana) was closely associated with a high water content of leaves.…”

The role of sugar signaling in plant defense responses against fungal pathogens

“…In plants kept in the cold at temperatures of 0-5°C several changes are observed, enhancing their resistance to freezing. Plants acclimated to cold conditions show a greater resistance to fungal pathogens (Rapacz et al 2000;Pła_ zek and _ Zur 2003). Cellular changes associated with the acquisition of tolerance to chilling and/or freezing include the accumulation of sugar or compatible solutes, changes in membrane composition and synthesis of dehydrinlike proteins (Ruelland and Zachowski 2010).…”

“…According to Tronsmo (1986), a reduced availability of water may partly explain the increased resistance to fungal pathogens in grasses after hardening. However, during the dehardening process a rapid loss of cold resistance is observed in plants while their resistance to pathogens is maintained over a longer period (Rapacz et al 2000). At present it is known that the process of acclimation to low temperatures is highly complex and includes many changes within cells, both at the molecular and structural levels (see reviews by Chinnusamy et al 2006;Ruelland and Zachowski 2010).…”

Relationship between quantum efficiency of PSII and cold-induced plant resistance to fungal pathogens

“…This phe nom e non, called cross-tolerance, has been known for many years (Itai and Benzioni 1973). Pre vi ous stud ies have shown that cold treat ment in creases plant re sistance to fun gal patho gens (Tronsmo 1984a,b, Laroche et al 1997, Rapacz et al 2000. The elu ci -da tion of the underlying phys i o log i cal pro cesses re spon si ble for cross-tolerance was the sub ject of many stud ies (Har ring ton and Alm 1988, Bowler and Fluhr 2000, Rapacz et al 2000, Płażek et al 2001).…”