Biotic stress

Although beyond the scope of this chapter, changing patterns of drought and heat, as well as elevated CO2, are likely to be accompanied by a change in the spectrum of biotic stresses. For most cereals, more tropical environments are also associated with greater numbers of foliar pests and diseases; therefore climate change would be likely to result in increased risk of epidemics (Legreve and Duveiller, Chapter 4, this volume). In dry regions, root diseases such as nematode infestation are also problematic since they further reduce the plant's ability to extract scarce water (Nicol and Rivoal, 2007).

0 0

Post a comment