Peronosporales : Characters,Taxonomy & Major diseases Kingdom Chromista , Class Oomycetes , Order Peronosporales with diagrams.

1. SUBMITTED BY,
KAAVIYA AV
COURSE TEACHER:
Dr. PARTHASARATHY S
ASSISTANT PROFESSOR
PLANT PATHOLOGY

3. The Peronosporales show a wide range of
habit from aquatic, through amphibious way of
life to the land habit.
Many peronosporales are parasites and some
are saprophytes. A few parasitic species can
live as saprobes after the death of the host.
The sporangia in the Peronosporales usually
get detached and generally function as conidia.
They are globose or oval in form.

5. The sporangia in many species are borne
on special reproductive hyphae called the
sporangiophores.
The oogonium in the Peronosporales
contains a single egg which is surrounded
by periplasm.
The zoospores in the Peronosporales are
typically reniform in shape and
biflagellate with the flagella arising from
the concave side. They are thus
monoplanetic.

7. Domain:
Eukaryota
Kingdom:
Chromista
Phylum:
Oomycota
Class:
Oomycetes
Order:
Peronosporales
Families:
Peronosporaceae
1 genus & 45 species
Albuginaceae
8 genera & 600 species

8. The fungi of the order -
Peronosporales, cause damping off,
white rusts, downy mildews, late
blight diseases.
Some of these pathogenic protists
include the organisms responsible
for potato blight, eucalyptus
dieback,sudden oak death, and
blue mold.

11. Textbook of Fungi.
Introductory Mycology. 4th ed. Wiley
and Sons.
Tata MC - Graw hill education.
Journal - Fungal ecology.
Pathogens of Autotrophs - lynne boddy.
Fungal evolution – Strullo
Journal - classification of
Peronosporomycetes