Table 3.
Function | Contribution to pathogenicity | Reference | |
---|---|---|---|
Siderophores |
Iron-chelating ligands. Iron transport compounds. |
Intracellular iron storage compounds. Suppress the growth of other microorganisms. |
Renshaw et al.50 |
Toxins | Polyketides that include a range of compounds as mycotoxins and spore pigments. |
Toxic to plants and/or animals. Mode of action extremely variable, depending on the produced compound. |
Gaffoor et al.51 Chauhan et al.52 |
Allergens |
Sensitization with extraneous allergens. Fugal allergens are usually proteins, polysaccharides, or glycoproteins. |
IgE-mediated hypersensitivity in humans. The major allergic manifestations are asthma, rhinitis, allergic bronchopulmonary mycoses, hypersensitivity pneumonitis. |
Fukutomi & Taniguchi53 |
MAPKs | Mitogen-activated protein kinases that function as key signal transduction components. | Fungal MAPKs help to promote the penetration of host tissues governing appressorium formation and virulence. |
Hamel et al.18 He et al.23 |
HSPs | Involved in several common biological activities, such as transcription, translation, protein folding, and aggregation and disaggregation of proteins. |
Involved in stress response. Different families of HSP are expressed depending on stress type, e.g.: pH, heat, cold or osmotic stress. |
Tiwari et al.21 |
Nudix effectors | Maintenance of proper cellular processes and physiological homeostasis by sensing and modulation levels of their substrates like nucleotide sugars, deoxyribonucleoside triphosphate and capped mRNAs. | Manipulation of host defence systems. | Dong & Wang54 |
Velvet complex | Regulation of fungal development and secondary metabolism. | Promotion of chromatin accessibility and expression of biosynthetic gene clusters involved pathogenicity as mycotoxins, pigments and hormones. |
López-Berges et al.55 Niehaus et al.26 |