1. The document describes the characteristics of different types of rust fungi including their life cycles, hosts, and symptoms. 2. Rust fungi can have autoecious or heteroecious life cycles requiring one or two hosts respectively. Their life cycles can be macrocyclic, demicyclic, or microcyclic depending on the number of spore stages. 3. Common rust fungi discussed include Puccinia graminis which causes wheat rust and alternates between wheat and barberry hosts, Gymnosporangium juniperi-virginianae which causes cedar-apple rust and alternates between apple/hawthorn and juniper hosts, Cronartium ribicola which causes white pine

1. CARACTERISTICAS
COLEGIO DE POSTGRADUADOS-HF-FIT613

2. Pucciniomycotina
Pucciniomycetes
¡¡¡¡NO BASIDIOCARPO !!!!
!!!! NO FIBULAS!!!!
!!!! CINCO ESPORAS¡¡¡¡¡
COLEGIO DE POSTGRADUADOS-HF-FIT613

3. SEPTO

5. AUTOECIOUS
– UN SOLO HOSPEDANTE
Ej. Melampsora lini
HETEROECIOUS – DOS HOSPEDANTES
1. Hospedante alterno (por lo general una maleza)
2. Cultivo (mayoría de especies; hospedante
principal)

7. MACROCICLICO: 5 estados de esporas
(0, I, II, III, IV)
DEMICICLICO: 4 estados de esporas
(0, I, - III, IV)
MICROCICLICO: 3 estados de esporas
(0, - - III, IV)
2 estados de esporas
( - - - III, IV)

8. S
I
N
T
O
M
A
S

9. Herrera y Uloa, 1998
S I N T O M A S
UREDIAS
(anamorfo)
TELIAS
(teleomorfo)
HOSPEDAN
T E (trigo)

10. ISLAS VERDES
SIGNOS
(síntomas)
HAZ
ENVES
Herrera y Ulloa, 1998

11. + ESTADOS DE ESPORAS

12. Herrera y Ulloa, 1998
SIGNOS
I
SINTOMAS

13. Herrera y Ulloa, 1998
III
TELIOSPORAS
(pared gruesa,
bicelulares y
pediceladas)

14. Herrera y Ulloa, 1998
II.
ANAMORFO
(uredosporas)
(unicelular,
verrucosas)
III.
TELEOMORFO
(teliosporas)
unicelular
(bicelular)

15. Herrera y Ulloa, 1998
II.
UREDOSPORA
apresorio
(esporas de
verano)
-ANAMORFO-
INFECCION

16. Herrera y Ulloa, 1998
III. TELIOSPORA
IV. BASIDIOSPORAS
(esporas de reposo o de
invierno)
(TELEOMORFO)
(producto de meiosis)
COLEGIO DE POSTGRADUADOS-HF-FIT613
-----------------------------------------------------------------------------------

17. “IV”
Herrera y Ulloa, 1998
-MORFOLOGICO
III.
-NUCLEAR
DICARION
(n + n)
MEIOSIS

18. Herrera y Ulloa, 1998
IV.
BASIDIO
SPORAS
TELIOSPORAS III.
EN
CARIOGAMIA
TELIOSPORAS
DIKARION

20. -HETEROECIOUS
-MACROCICLICO
O
A. MALEZA (Berberis vulgaris)
(agracejo)
I. Aecias
I
B.
CULTIVO
IV
II
III
Herrera y Ulloa, 1998

21. Puccinia graminis
·nía
graminis
Spermatia fertilize compat;ble
receptive hypha
Fertilized
. receptive hypha
aEJo
--
/
¡9'"
tritici
.....-l / Bas1diospores infect
. ('J!!:J
barberry leaf directly
t
.
®
•
Dikaryotic mycelium
berry
' . } stem and
r!
J :1
Spermagonia on barberry leaf
rrn....,.--.----;-- ,...,
,-
Basidiospore
o·
'
Tt:liddnd
uredia on
wheat stem
or leaf
Basidium
Clusters of aecia on under side
of barberry leaf
More uredia on wheat
Uredospore infects
wheat through stomata
--------------------------------------------------------------------------------
Aeciospores;:/
•)

22. -Basidiospore
(n)
8=---- +Basid iospore
(n)
AUTO
DESCRIBIR
CICLO
Dispersal of
aeciospores to
o o wheat i n spring
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

23. MANZANO: Gymnosporangium juniperi-virginianae
(hospedante - cultivo - primavera)
AGRIOS, 2005
O. Espermagonios (centro)
I. Aecias (alrededor centro)
COLEGIO DE POSTGRADUADOS-HF-FIT613
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xx
HETEROECIOS: DEMICICLICA

24. AGRIOS, 2005
I.
PERIDIO
FRUTO
AECIA y aeciosporas
(tejocote)

25. Juniperus sp. (hospedante – 2 – resto del año)
III. TELIA
AGALLA
AGRIOS, 2005
HF-FIT613

26. IV. BASIDIOSPORAS
AGRIOS, 2005

27. Telial horn
protruding from
cedar galls
and producing
teliospores
Basidiospores
carried by the wind
to young apple leaves
and fruit
Basidiospore germinales
on apple tissue and
penetrates cells directly
Telial horns develop
and expand on
cedar gall the
followi g spring
n
-Aecia and
spermogonia
on apple fruit
fruit
Top view of
enlarged aecia
on apple fruit
leaf
Cross section
of a young gall on
cedar consisting of
paranchyma cells
and intercellular
mycelium with haustoria
Aeciospores
carried by wind
to cedar trees
Clusters of
aecia on
lower
leaf
spermagonia
on upper leaf
surface
Normal leaf
Aeciospores land on---and infect cedar leaf
of axillary bud in
late summer or early
fall
appears
the following
summer
uniperi-virginianae
Spermagonia
(in the center)
and aecia on
infected apple
fruit
Spermagonia
Spermagonia and aecia
on apple leaf

28. PINO (blanco)
Cronartium
ribicola
Spermogonia y
aecia
AGRIOS, 2005

29. Uredia and telial
collumns on lower
side of Ribes leaf
Aeciospore
(or uredospore)
infecting lower
slde of Ribes leaf
Uredospores
l!redium on lower
side of Ribes leaf
(late spring,summer)
Basidiospores
carried by wind
to white pine
i
needles a few
hundred feet away
(summer,fall)
tissue
Basidiospore
H
l,
Cross section of
branch
aecia (A)
Aecia blisters
on stem and
branches of
white pine
'ele(
Aecia produced
annually on
branch in spring
beginning 3-6
years after
infection
Spermagonia produced
nartium ribicola
Early infection of
anrnually on branch in
late spring or early
white pine branch
showing puffy bark
summer beginning 2-4
years after infection.
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xx

30. Hemileia vastatrix
CAFÉ (no se conoce hospedante alterno)
AGRIOS, 2005

31. Germínating uredospore enters
lower sí de of leaf through stoma
lntercellular
mycelíum (M)
and haustoria (H)
Uredíum on
lower side of leaf
j
Cluster
of uredia
Clusters of uredia
Uredium-telium with
uredospores and teliospores

32. ¡ SISTEMATICA, BIOLOGIA, FITOPATOLOGIA,
EPIDEMIOLOGIA, CUARENTENADOS, CONTROL !
COLEGIO DE POSTGRADUADOS-HF-FIT613