Editing Rust (fungus) (section)

==Host plant–rust fungus relationship==
There are definite patterns of relationship with host plant groups and the rust fungi that parasitize them. Some genera of rust fungi, especially ''[[Puccinia]]'' and ''[[Uromyces]]'', comprise species that are capable of parasitizing plants of many families.{{Citation needed|date=October 2023}} Other rust genera appear to be restricted to certain plant groups.{{Citation needed|date=October 2023}} Host restriction may, in [[heteroecious]] species, apply to both phases of life cycle or to only one phase.<ref name="How many rust species exist?"/> As with many pathogen/host pairs, rusts are often in [[Gene-for-gene interactions in rust fungi|gene-for-gene relationships with their plants]]. This rust-plant gene-for-gene interaction differs somewhat from [[gene-for-gene relationship|other gene-for-gene situations]] and has its own quirks and [[agronomy|agronomic]] significance. Rust fungi decrease photosynthesis and elicit the emissions of different stress volatiles with increasing severity of infection.<ref>{{cite journal |last1=Sulaiman Eve |first1=Hassan Y |last2=Runno-Paurson |last3=Kaurilind |first3=Eve |last4=Niinemets |first4=Ülo |title=Differential impact of crown rust (''Puccinia coronata'') infection on photosynthesis and volatile emissions in the primary host ''Avena sativa'' and the alternate host ''Rhamnus frangula'' |journal=Journal of Experimental Botany |date=2023 |volume=74 |issue=6 |pages=2029–2046 |doi=10.1093/jxb/erad001|pmid=36610799 }}</ref>