Az Eszterházy Károly Tanárképző Főiskola Tudományos Közleményei. 2004. Sectio Biologiae. (Acta Academiae Paedagogicae Agriensis : Nova series ; Tom. 25)

Marschall, M. and Proctor M. C. F.: Aspects of stress tolerance in bryophytes

Aspects of Stress Tolerance in Bryophytes 117 1 -O Porelia platyphylia Qsg, 0 0.2 0.4 0.6 0.8 1 - Relative water content Figure 2: Pressure-volume graph from the same data as Fig. lb. Original figure from Proctor 2000. 2. Stress factors and stress responses in bryophytes In bryophytes the strongest limiting stress factors are desiccation and high temperature or the combination of the two or the combination of high water content and high temperature, but the last version is not too common, according to the morphological structure of these plants. 3.1 Water deficit and responses The different adaptive types of bryophytes and higher plant cells respond similarly to water deficit. The comparison was made in terms of true relative water content (true relative water content = cell water content relative to that at full turgor) (Figure 3).