Late Permian azonate and zonate
trilete spores from Chhidru Formation, Salt Range, Pakistan.
Natural host ranges of Tomato zonate
spot virus in Yunnan.
Description.--Fruiting bodies: Semicircular to fan-shaped and sessile or occasionally nearly circular with a rudimentary stipe; nearly planar, 8.5-15.5 cm broad; leathery and flexible when young and moist, rigid and hard corky when dry; white to cream throughout or the bases occasionally umber to black; surface dry, ranging from very finely tomentose and velvety to the touch, to glabrous and smooth with age, often concentrically zonate
, especially near the margin, and warted with age.
Inflorescence apical meristems can have any of three possible cellular arrangements (dep ending on the taxon): "tunica/corpus," "mantle/core," or "zonate
Lobophora variegate, "zonate
decumbent-" and "brown decumbent-" bladed forms (Bahamas and North Carolina).
Morphologically, this genus can be differentiated from Lactarius by complete absence of zonate
and glutinose caps, includes all annulate species and may contain species with veils and velvety caps (Buyck et al., 2008).
Colonies reaching 3-4cm diameter in 7 days at 28[degrees]C, on Czapek, yellow to buff with light yellow conidia, mycelium white, not dense, zonate
, reverse brown.
Specimens were further confirmed by the presence of zonate
tetraspores embedded in surface patches within the thalli.
Descriptions of the histological patterns seen in sections of the pteridophyte shoot apex allowed closer comparisons with the zonate
meristems of gymnosperms and angiosperms.
RTx437 is susceptible to grain mold, but has moderate levels of resistance to rust (caused by Puccinia purpurea Cooke), and zonate
leaf spot (caused by Gloeocercospora sorghi D.
Genetic basis of resistance to zonate
leaf spot disease in forage sorghum.
Tx2911 is moderately susceptible to rust (caused by Puccinia purpurea Cooke), and zonate
leaf spot (caused by Gloeocercospora sorghi Bain & Edgerton ex Deighton).