Transcript Phylum :Basidiomycota.

Phylum :Basidiomycota.
• General characters:
1. The sexual reproduction produce basidiospores.
2. No flagellate cells are present.
3. Dikaryotic phase long dikaryotic mycelium. (may
have clamp connection).
4. Presence of dolipore septum
5. (septated mycelium).
5.Basidiomycota:
parasites
rust fungi
smut fungi
Saprophytes.
6. Cell wall contain high amount of chitin.
7. Forming marcroscopic fruiting bodies.
8. Asexual reproduction by conidia,chlamdospores
• The dolipare septum:
Found in all basidiomycota except the rust fungi
It consist of central preforated swelling over which
there is a pore cap
The dolipare septum regulates the passage of
nuclei and organelles from one cell to another
by opining and closing
• The clamp connection:
Found in all dikaryotic mycelia of
basidiomycota except for most uredinomycetes
• The basidium:
The basidium is the organ in which
karyogamy and meiosis take place, result in formation
of 4basidiospores externally on the basidium.
Types of basidia
phragmobasidium
holiobasidium
teliobasidium
• Diplodization or dikaryotization:
Is the process in which a primary
mycelium converted into secondary myclium.
Basidiomycota
Class:Basidiomycetes
*produce one type of
spores during their life
cycle.
*most species are
saprophytes.
Class:Ustomycetes
*produse more than one
type of spores
*most are parasites causing
smut disease
Class:Uridinomysetes
*produce more than one
type of spores.
*most are parasites causing
rust disease.
*Life cycle of the basidiomycetes:
Puccinia
Class:Urediniomycetes
General characters:
1. The mycelium has no clamp connection or dolipore
septum.
2. Obligate parasites causing rust disease.
3. Heteroeious( require two different species of plant
host to complete life cycle).
4. Heterothalic(have two diffrenet mating types -.+).
5. Sexual reproduction takes place by spermatization
between spermatia and receptive hypae.
6. Life cycle is very complex.
Order:
Uredinales
Family:Pucciniaceae
Family:Melampsoracae
teleutospores are stalked
and free
teleutospores are sessile and
united together
uromyces
fabae
one cell
phragmedium
more than
two
Puccinia Graminis
*uredospores,unicellula
r,binucleate double wall
and cup shaped.
*teleutospore,bicellular,
binucleate haploid then
converted to
uninucleate diploid
after karyogamy the
apex of the spore is
pointed.
.
puccinia
two cells
Melampsora Lini
Puccinia allii
*uredospore,unicellular,
binucleate, double wall
and globose.
teleutospore,binucleate,
bicellulae,haploid then
converted to diploid after
karyogamy the apex of
the spore is flattend.
Puccinia :
Causing rust disease.
• Plant Health Management
Fungicide Application:
The list of compounds labeled for rust control
includes: chlorothalonil, chlorothalonil +
fenarimol, chlorothalonil + thiophanate-methyl,
cyproconazole, mancozeb, thiophanate-methyl
+ mancozeb, propiconazole, triadimefon, and
thiram + triadimefon.
Order: Ustilagoinales
Family:Ustilaginaceae
Ustilago Zeae
*cause smut of zeae.
Ustilago Tritici
*cause smut of wheat.
ustilago zeae
ustilago tritici
ustilago tritici
ustilago zeae