معرفی بیست و پنج گونه زنگ‌ از جنوب غربی ایران

Rusts (Basidiomycota, Pucciniomycotina) are obligate plants parasitic fungi, that produce yellow, orange, brown to black sori on the aerial parts of plants, causing yellowing and drying and a severe loss in quantity and quality of their yields. Kohgiluyeh and Boyer-Ahmad province, southwest of Iran, with diverse climates, is an important region in the production of agricultural products. Farms, orchards, and forests in Boyar-Ahmad, Dena, Gachsaran and Kohgiluyeh regions were surveyed and infected plants with rusts were sampled, in spring and summer. The characteristics of sori and the morphological characteristics of uridineospores and teliospores were studied and measured after preparing a microscopic slide of them with a calibrated Olympus CX11 bright field microscope equipped with a scaled eyepiece. The collected data were compared with the descriptions of rusts and 25 species of rusts belong to five genera named: Puccinia allii* , Puccinia acarnae*, Puccinia striformis, Puccinia cynodontis, Puccinia malvacearum*, Puccinia pulvinata*, Puccinia menthae*, Puccinia calcitrapae*, Puccinia graminis, Puccinia hieracii*, Puccinia hysterium*, Puccinia bullata*, Uromyces vicia-fabae*, Uromycese trifolii*, Uromyces striatus*, Uromyces polygoni-avicularis*, Uromyces dactylidis*, Uromyces glycyrrhizae*, Uromyces tinctoriicola*, Uromyces anthyllidis*, Uromyces ambiguous*, Melampsora euphorbiae*, Melampsora capraearum*, Pileolaria terebinthi*, Tranzschelia discolor*, and Cronartium quercuum* , in order on the plants: Allium ampeloprasum, Picnomon acarnae, Triticum aestivum, Plantago sp., Malva sylvestris and M. rotundifolia, Echinops macrophyllus, Mentha longifolia, Cardus sp. and Garhadiolus papposus, Triticum aestivum and Berberis vulgaris, Centaurea solstitialis, Tragopogon pratensis, Prangos ferlucaceae, Vicia fabae, Trifollium repens, Medicago sativa, Polygonum patulum and P. sawatchense and P. aviculariae, Poa sp. and Hordeum sp., Glycyrrhiza glabra, Euphorbia cheirodonia, Medicago sp., Allium sp., Euphorbia helyoscopi, Salix sp. Pistacia atlantica, Amygdalys communis, and Quercus sp. were identified. Based on the available literatures, 22 species of these rusts (marked with *) are reported from this province for the first time.