Powdery Mildew of Prairie Gentian: Characteristics, Molecular Phylogeny and Pathogenicity

2002 ◽  
Vol 68 (3) ◽  
pp. 200-207 ◽  
Author(s):  
Jun OKAMOTO ◽  
Saranya LIMKAISANG ◽  
Hidenobu NOJIMA ◽  
Susumu TAKAMATSU
Keyword(s):  
Powdery Mildew ◽  
Molecular Phylogeny ◽  
Prairie Gentian

Revisiting a poorly known powdery mildew species: Morphology and molecular phylogeny of Erysiphe longissima

Mycoscience ◽  
2019 ◽  
Vol 60 (4) ◽  
pp. 250-254
Author(s):  
Penglei Qiu ◽  
Shurong Tang ◽  
Guanxiu Guan ◽  
Yu Li ◽  
Susumu Takamatsu ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Molecular Phylogeny

Morphology and molecular phylogeny of Brasiliomyces malachrae, a unique powdery mildew distributed in Central and South America

Mycoscience ◽  
2018 ◽  
Vol 59 (6) ◽  
pp. 461-466 ◽  
Author(s):  
María G. Cabrera ◽  
Roberto E. Álvarez ◽  
Susumu Takamatsu
Keyword(s):  
Powdery Mildew ◽  
South America ◽  
Molecular Phylogeny

Molecular phylogeny and evolution of the maple powdery mildew (Sawadaea, Erysiphaceae) inferred from nuclear rDNA sequences

2005 ◽  
Vol 109 (8) ◽  
pp. 912-922 ◽  
Author(s):  
Simon Hirose ◽  
Seinosuke Tanda ◽  
Levente Kiss ◽  
Banga Grigaliunaite ◽  
Maria Havrylenko ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Molecular Phylogeny ◽  
Nuclear Rdna ◽  
Rdna Sequences ◽  
Phylogeny And Evolution

Microscopy studies of powdery mildew on summer squash

1991 ◽  
Vol 49 ◽  
pp. 520-521
Author(s):  
John S. Gardner ◽  
W. M. Hess
Keyword(s):  
Powdery Mildew ◽  
Tip Growth ◽  
Hyphal Growth ◽  
Plant Tissues ◽  
Vegetative Hypha ◽  
Powdery Mildews ◽  
Summer Squash ◽  
Conidial Formation ◽  
Polar Tip Growth ◽  
Short Conidiophore

Powdery mildews are characterized by the appearance of spots or patches of a white to grayish, powdery, mildewy growth on plant tissues, entire leaves or other organs. Ervsiphe cichoracearum, the powdery mildew of cucurbits is among the most serious parasites, and the most common. The conidia are formed similar to the process described for Ervsiphe graminis by Cole and Samson. Theconidial chains mature basipetally from a short, conidiophore mother-cell at the base of the fertile hypha which arises holoblastically from the conidiophore. During early development it probably elongates by polar-tip growth like a vegetative hypha. A septum forms just above the conidiophore apex. Additional septa develop in acropetal succession. However, the conidia of E. cichoracearum are more doliform than condia from E. graminis. The purpose of these investigations was to use scanning electron microscopy (SEM) to demonstrate the nature of hyphal growth and conidial formation of E. cichoracearum on field-grown squash leaves.

Chromosomal location of genes for resistance to powdery mildew in Chinese wheat lines Jieyan 94-1-1 and Siyan 94-1-2

Hereditas ◽  
2002 ◽  
Vol 136 (3) ◽  
pp. 212-218 ◽  
Author(s):  
XIU QIANG HUANG ◽  
SAI L. K. HSAM ◽  
FRIEDRICH J. ZELLER
Keyword(s):  
Powdery Mildew ◽  
Chromosomal Location ◽  
Wheat Lines ◽  
Chinese Wheat

Molecular phylogeny and taxonomic evaluation of the genus Asaccus Dixon and Anderson, 1973 (Reptilia: Phyllodactylidae) in Iran

2020 ◽  
pp. 207-214
Author(s):  
Akbar Fattahi
Keyword(s):  
Molecular Phylogeny ◽  
Nuclear Gene ◽  
Genetic Distances ◽  
Genetic Lineage ◽  
New Taxon ◽  
Zagros Mountains ◽  
Relict Species ◽  
Taxonomical Revision ◽  
Two Populations ◽  
Taxonomic Evaluation

The Iranian species of the phyllodactylid geckos of the genus Asaccus are found only in the valleys of the Zagros Mountains, a region which represents an important area of endemism in western Iran. Recently, many relict species have been described from the central and southern parts of the Zagros Mountains, which were previously known as A. elisae. The recent descriptions of species within this complex suggest that diversity within the genus may be higher than expected and that its taxonomy and systematics should be revised. In the present study, phylogenetic relationships within the genus Asaccus were evaluated using two mitochondrial and one nuclear gene. Genetically, the genus shows high levels of variability. The molecular phylogeny of the genus suggests the presence of three main clades along the Zagros Mountains with the southern population (from the Hormozgan province) and one clade (A. sp8 and A. sp9) being sister taxon to A. montanus from UAE. The remaining samples are separated into two reciprocally monophyletic groups: the northern (Kurdistan, Kermanshah and Ilam provinces) and the central (Lorestan, Khuzestan, Kohgilouye-Bouyer Ahmad and Fars provinces) Zagros groups. The results of the present study suggest that populations attributed to A. elisae in Iran correspond to distinct lineages with high genetic distances. In brief, our results suggest that the genus needs a major taxonomical revision The Arabian origin of the genus has not been confirmed, because two populations from Zagros were located within the A. montanus, A. gallagheri and A. platyrhynchus clade. Further morphological analyses are needed to systematically define each genetic lineage as a new taxon.

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