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Study sets matching "plant pathology"

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Study sets matching "plant pathology"

14 terms
Plant Pathology
Apple Scab
Armillaria Root Rot
Black Spot on Rose
Cedar Apple Rust
Apple Scab
Armillaria Root Rot
58 terms
Plant Pathology
5 Steps for Diagnosing Plant Problems
5 Steps for Diagnosing Plant Problems-…
5 Steps for Diagnosing Plant Problems-…
5 Steps for Diagnosing Plant Problems-…
1. Define the problem... 2. Look for patterns... 3. Establish timin…
1. Identify the plant (host)... 2. Establish the normal appearan…
Non uniform damage= biotic... Uniform damage= abiotic
Living organisms generally multiply with time- spread of dama…
5 Steps for Diagnosing Plant Problems
1. Define the problem... 2. Look for patterns... 3. Establish timin…
5 Steps for Diagnosing Plant Problems-…
1. Identify the plant (host)... 2. Establish the normal appearan…
95 terms
Plant Pathology 300 copy
Definition of disease
Symptoms and signs of disease
Disease triangle
Koch's postulates
departure from normal condition (physiological/morphological)…
Sign is any microscopic or macroscopic structure of the causa…
to have a disease, we need all three: pathogen, host and envi…
Four criteria: 1) microbe must be correlated with the disease…
Definition of disease
departure from normal condition (physiological/morphological)…
Symptoms and signs of disease
Sign is any microscopic or macroscopic structure of the causa…
25 terms
Plant pathology
environmental damage, physiological di…
physical factors, temperature, moistur…
Physical factors
Temperature
There are five kinds of abiotic diseases:
Environmental damage consists of
such as wind, hail, lightning ... Lightning is common; circular…
Excessive heat can damage/kill; heat necrosis of potatoes... Fre…
environmental damage, physiological di…
There are five kinds of abiotic diseases:
physical factors, temperature, moistur…
Environmental damage consists of
Plant Pathology
intercellular matrix
middle lamella
effector molecules
pathogen-induced modified... self
channel exchange between cells
3.
What pathogen exudes to increase a plant's fitness to its needs
Plant recognizes its own body's response to the invader--the…
intercellular matrix
channel exchange between cells
middle lamella
3.
84 terms
Plant Pathology
Compound Microscope
Disease
Disease Cycle
Disease Triangle
an optical instrument for forming magnified images of small o…
the abnormal functioning of an organism.
the succession of all of events and interactions among the ho…
a memory aid that diagrams the three important components nec…
Compound Microscope
an optical instrument for forming magnified images of small o…
Disease
the abnormal functioning of an organism.
83 terms
Plant Pathology
what distinguishes ascomycetes from ot…
what distinguishes basidiomycetes from…
Control measures for verticilium wilt
macrocyclic vs microcyclic rusts
has a microscopic sexual structure (sac called ascus) in whic…
reproduce sexually via the formation of specialized club-shap…
plant resistance and soil fumigation have proved viable
macrocyclic means the pathogen lives through more than just 2…
what distinguishes ascomycetes from ot…
has a microscopic sexual structure (sac called ascus) in whic…
what distinguishes basidiomycetes from…
reproduce sexually via the formation of specialized club-shap…
419 terms
Plant Pathology
Plant disease
Pathogen
Parasite
Nutrional modes
Disturbance of normal physiology, structure or function of pl…
Agent that causes disease (pathos) can be biotic or abiotic
An organism that withdraws nutrients from another living host
Obligate saprophyte, falcutative parasite, falcultative sapro…
Plant disease
Disturbance of normal physiology, structure or function of pl…
Pathogen
Agent that causes disease (pathos) can be biotic or abiotic
16 terms
Plant Pathology
Anthracnose
Bacterial Diseases
Black Knot
Blight
Distinctive limited lesions on stems, leaves and fruit. Often…
Bacterial pathogens
Black Knotty outgrowth or enlargement
Withering, cessation of growth and death of parts without rot…
Anthracnose
Distinctive limited lesions on stems, leaves and fruit. Often…
Bacterial Diseases
Bacterial pathogens
33 terms
Plant Pathology
Three structures in the gills of a bas…
Spores of ascomycota
Spores of Basidiomycota
Spores of zygomycota
Basidiospores, sterigma, basidium
Ascospores and conidia
Basidiospores and conidia
Zygospores and sporagiaspores
Three structures in the gills of a bas…
Basidiospores, sterigma, basidium
Spores of ascomycota
Ascospores and conidia
65 terms
Plant Pathology
5 main types of plant disease
blast
blight
cholorosis
leaf spots, root rots, vascular wilts, abnormal growth, rots…
sudden death of flowers and buds
rapid necrosis of leaves flowers, and stems
yellowing or whitening due to lack of cholorphyll
5 main types of plant disease
leaf spots, root rots, vascular wilts, abnormal growth, rots…
blast
sudden death of flowers and buds
23 terms
Plant pathology
necrotrophs
biotrophs
rust fungi
tobacco mosaic virus
Use enzymes, toxins to affect structural integrity of plant c…
Require living plant cells, so avoid recognition and divert p…
Produce haustoria into mesophyll cells. Disease symptoms are…
Virus. Widespread in tobacco and tomato. Single-stranded RNA.…
necrotrophs
Use enzymes, toxins to affect structural integrity of plant c…
biotrophs
Require living plant cells, so avoid recognition and divert p…
105 terms
Plant Pathology Exam 1
Irish Potato Famine
Ergot
Wheat rust
Sudden Oak Death
Grew lumper potatoes in monoculture ... lived primarily on a die…
Convulsive ergotism may have been physiological basis for 169…
Pathogen: Puccinia graminis tritici (Obligate parasite)... 5 spo…
Pathogen: Phytopthera ramorum... wide range of host plants besid…
Irish Potato Famine
Grew lumper potatoes in monoculture ... lived primarily on a die…
Ergot
Convulsive ergotism may have been physiological basis for 169…
30 terms
Plant Pathology Exam 2
European larch canker
Diplodia shoot blight
sirococcus shoot blight
Pitch canker
Lachnellula
Diplodia pinea
Fusarium circinatum
European larch canker
Lachnellula
Diplodia shoot blight
Diplodia pinea
57 terms
Plant Pathology Exam
main components of a virus
General life cycle and replication of…
virus
plant viruses life cycle
protein coat, genetic material, movement
obligate intracellular molecular parasite
1) get into a susceptible host... 2) Replicate... 3) Move locally a…
main components of a virus
protein coat, genetic material, movement
General life cycle and replication of…
43 terms
Plant pathology
Lives off dead or decaying tissue
feeds off another organism, but provid…
only feeds on live cells
only feeds on dead cells
saprophyte
symbiote
obligate parasite
obligate saprophyte
Lives off dead or decaying tissue
saprophyte
feeds off another organism, but provid…
symbiote
122 terms
Plant Pathology
Phyllody
Dioecious
Autoecious
Heteroecious
Abnormal development of floral parts into leafy structures
Two separate sexual stages.
Development of the entire life cycle of a fungus on a single…
Parasitic on more than one host or group of unrelated hosts.…
Phyllody
Abnormal development of floral parts into leafy structures
Dioecious
Two separate sexual stages.
20 terms
Plant Pathology
Alfalfa
Barley
Oats
Wheat
Leaf spot & downy mildew
Cover smut, loose smut, scald, stripe rust, & powdery mildew
Crown rust, black loose or covered smut, & stem rust
Glume blotch, leaf rust, stem rust, loose smut, scab, & powde…
Alfalfa
Leaf spot & downy mildew
Barley
Cover smut, loose smut, scald, stripe rust, & powdery mildew
52 terms
plant pathology
Theophrastus
Micheli
Prevost
Tillet
greek philosopher, first to study and publish articles on pla…
determined dust particles were seeds of fungi and reproductio…
proved bunt was caused by fungus
preformed in depth seed treatments and demonstrated bunt of w…
Theophrastus
greek philosopher, first to study and publish articles on pla…
Micheli
determined dust particles were seeds of fungi and reproductio…
21 terms
Plant Pathology
Pseudomonas Syringae
Phytophthora infestans
Fungi
Mutualism
Bacteria - responsible for ice nucleation
Fungus-like protists - late blight disease (spreads above gro…
-genetic material in nucleus ... -cell wall has chitin... -tubular…
Fungus and plant benefit
Pseudomonas Syringae
Bacteria - responsible for ice nucleation
Phytophthora infestans
Fungus-like protists - late blight disease (spreads above gro…
89 terms
Plant Pathology
etiology
pathogenesis
Nature of Losses
commensalism
causal factors of disease
means of disease expression
direct: yield reduction, quality reduction, reduce aesthetic…
+, 0
etiology
causal factors of disease
pathogenesis
means of disease expression
67 terms
Plant pathology
What is the definition of plant disease
Plant disease symptoms
How do diseases develop- enviromental…
Two disease cycles
A process by which living or nonliving entities interfere ove…
Smaller leaves, fewer leaves ,smaller root system ,small or a…
The lifecycles of all disease organisms are greatly influence…
Monocylic-one infection period per crop cycle/ season... Polycyc…
What is the definition of plant disease
A process by which living or nonliving entities interfere ove…
Plant disease symptoms
Smaller leaves, fewer leaves ,smaller root system ,small or a…
32 terms
Plant Pathology
symptoms of plant disease
chlorosis
necrosis
wilting
chlorosis, necrosis, wilting
yellowing of cells due to chlorophyll degredation
browning of cells (dead cells)
plugged xylem (fungi, viruses) or fungal toxins forcing stoma…
symptoms of plant disease
chlorosis, necrosis, wilting
chlorosis
yellowing of cells due to chlorophyll degredation
142 terms
Plant Pathology (Exam 1)
Plant Pathology
Plant Pathology
14% by diseases... 12% by weeds... 10% by in…
Biotic ... Infectious
"Science that studies plant diseases and attempts to improve…
"Plant Pathology is the study of the organisms and of the env…
What are the statistics of crop losses?
Fungi... Prokaryotes (bacteria & mollicutes)... Parasitic higher pl…
Plant Pathology
"Science that studies plant diseases and attempts to improve…
Plant Pathology
"Plant Pathology is the study of the organisms and of the env…
56 terms
Plant Pathology
plasmopara viticola
erysiphe necator
neofusicoccum diplodia serrata
diaporthe ampelina
downey mildew on grapes
powdery mildew on grapes
botryosphaeria dieback
phomopsis cane & leaf spot
plasmopara viticola
downey mildew on grapes
erysiphe necator
powdery mildew on grapes
12 terms
Plant Pathology
heterotroph
Autotroph
Selective media
Blight
An organism that needs another to help gain its nutrients
An organism that gets nutrients from sunlight
A media used in pure culture to give a place for pathogen gro…
A chlorosis/necrosis of plant tissue from a pathogen
heterotroph
An organism that needs another to help gain its nutrients
Autotroph
An organism that gets nutrients from sunlight
22 terms
Plant Pathology
Alfalfa - Leaf Spot
Alfalfa - Downy Mildew
Barley - Cover Smut
Barley - Loose Smut
Cut foliage in a timely manner
Cut foliage in a timely manner
Treat seed with suitable chemical
Treat seed with suitable chemical
Alfalfa - Leaf Spot
Cut foliage in a timely manner
Alfalfa - Downy Mildew
Cut foliage in a timely manner
42 terms
Plant Pathology
Parasite
Pathogen
Polycyclic
Primary inoculum
an organism that lives in intimate association with another o…
a disease-producing organism or biotic agent
having several to many disease cycles in a growing season
the inoculum, usually from an overwintering source, that init…
Parasite
an organism that lives in intimate association with another o…
Pathogen
a disease-producing organism or biotic agent
35 terms
Plant pathology
Disease
Pathogen
Plant disease symptoms
Disease symptoms
Symptomatic of a particular disease, continued irritation, ab…
Anything that causes disease
Diseases are diagnosed by symptoms
Necrotic, hypoplastic, hyperplastic
Disease
Symptomatic of a particular disease, continued irritation, ab…
Pathogen
Anything that causes disease
12 terms
Plant pathology
Pathosystem
Hypersensitive response
Virulence
Effector
An ecosystem based on parasitism
A plant's localized defense response to a pathogen, involving…
Degree of pathogenicity
Molecules secreted by plant-associated organisms that alter p…
Pathosystem
An ecosystem based on parasitism
Hypersensitive response
A plant's localized defense response to a pathogen, involving…
22 terms
Plant Pathology
Alfalfa - Leaf Spot
Alfalfa - Downy Mildew
Barley - Cover Smut
Barley - Loose Smut
Cut foliage in a timely manner
Cut foliage in a timely manner
Treat seed with suitable chemical
Treat seed with suitable chemical
Alfalfa - Leaf Spot
Cut foliage in a timely manner
Alfalfa - Downy Mildew
Cut foliage in a timely manner
31 terms
Plant Pathology
Plant Pathology
Plant disease
Causal agent
Pathogen
the study of disease-causing agents, the host plant, the inte…
sustained physiological and structural damage to plant tissue…
organism that incites and causes plant disease
a disease-producing organism or agent
Plant Pathology
the study of disease-causing agents, the host plant, the inte…
Plant disease
sustained physiological and structural damage to plant tissue…
63 terms
plant pathology
How has ergotism affected human history?
why was loss of potatoes so important…
Chestnut blight problems in US
how can pathogens be used in bioterror…
-European outbreaks in 15th and 16th century kill 10s of thou…
mid-18oos the population at limits of food supply, are introd…
1/4 of trees in appalachia were chestnuts, theyre resistant t…
they can be used to damage ag. econ
How has ergotism affected human history?
-European outbreaks in 15th and 16th century kill 10s of thou…
why was loss of potatoes so important…
mid-18oos the population at limits of food supply, are introd…
Plant Pathology
Plant Disease
Noninfections
Infections
Causal Agents
Harmful alteration of the normal biology of the plant
Abiotic... Ex. water, nutrient deficiencies... *Common, but confine…
Biotic... Ex. Pathogen... *Rare, but dangerous because they can cau…
Causes of plant disease
Plant Disease
Harmful alteration of the normal biology of the plant
Noninfections
Abiotic... Ex. water, nutrient deficiencies... *Common, but confine…
27 terms
Plant Pathology
Phylum: Arthropoda
Subphylum: Mandibulata
Class: Crustacea
Class: Diplopoda
...
Equipped with Mandibles (Jaw-Like Mouthparts)
- 2 Body Parts... --Abdomen... --Cephalothorax... - 5+ Pairs of Legs…
Millipedes... -2 Pairs of Legs Per Segment ... -Cylindrical Body... --…
Phylum: Arthropoda
...
Subphylum: Mandibulata
Equipped with Mandibles (Jaw-Like Mouthparts)
99 terms
Plant Pathology
Epidemic
Epiphytotic
Epidemiology
The two basis models for plant disease…
Disease increase in a population overtime
Disease increase in plants
The study of disease increases in populations
Monocyclic and polycyclic
Epidemic
Disease increase in a population overtime
Epiphytotic
Disease increase in plants
34 terms
Plant pathology
Microbiota
Biofilm
Binary fission
Endospores
Community of microorganisms that live in/on our bodies
A surface coating cooperative colony of prokaryotes , difficu…
Asexual reproduction where parent organism copies their DNA a…
A think-coated, protective cell produced within the cell when…
Microbiota
Community of microorganisms that live in/on our bodies
Biofilm
A surface coating cooperative colony of prokaryotes , difficu…
54 terms
Plant Pathology
Sclerotia
Ergot
Irish Potato Famine Causes
Agrobacterium
Fungal tissue which has massed up and turned black... -ability t…
Fungus which is toxic to humans and often found on wheat.... -bl…
-population explosion... -reliance on a single crop... -men ate 12-…
soil born bacterium which thrives in warm weather... -rod-shaped…
Sclerotia
Fungal tissue which has massed up and turned black... -ability t…
Ergot
Fungus which is toxic to humans and often found on wheat.... -bl…
149 terms
Plant Pathology Exam 1
abiotic
acervulus
agar
alternative host
pertaining to the absence of life; abiotic diseases are not c…
an erumpent, cushionlike fruiting body bearing conidiophores,…
a gelatinlike material derived from algae and used to solidif…
a plant other than the main host that a parasite can colonize…
abiotic
pertaining to the absence of life; abiotic diseases are not c…
acervulus
an erumpent, cushionlike fruiting body bearing conidiophores,…
84 terms
Plant Pathology Exam 1
Disease
Symptom
Sign
Disease Triangle
Departure from normal function by an organism with a continuo…
conditions caused by a pathogen (chlorosis, leaf spots, etc.)
actual presence of a pathogen (fruiting bodies, hyphae, etc.)
Environment must be suitable, host must be susceptible, and p…
Disease
Departure from normal function by an organism with a continuo…
Symptom
conditions caused by a pathogen (chlorosis, leaf spots, etc.)
50 terms
plant pathology chapter one
plant disease
types of pathogens
symptoms
signs
plant functions abnormally and this causes harm to a plant
fungi... fungal like organisms-oomycetes... bacteria ... viruses... nemat…
reaction by the host
direct observation of a pathogen or its parts
plant disease
plant functions abnormally and this causes harm to a plant
types of pathogens
fungi... fungal like organisms-oomycetes... bacteria ... viruses... nemat…
50 terms
Plant Pathology
Đạo ôn
Bạc lá
Vàng lùn
Lùn xoắn lá
Pyricularia oryzae
Xanthomonas oryzae
Rice grassy stunt virus
Rice rugged stunt virus
Đạo ôn
Pyricularia oryzae
Bạc lá
Xanthomonas oryzae
19 terms
Plant Pathology
Plant Immune Systems
Saprophyte
Fungus
Mycelium
-Pathogens enter through pores (stomates/lenticiles) or holes…
An organism that lives on dead or decaying organic matter. Mo…
Composed of filaments called hyphae (one hypha) composed of l…
The body of the fungus. Composed of hyphae
Plant Immune Systems
-Pathogens enter through pores (stomates/lenticiles) or holes…
Saprophyte
An organism that lives on dead or decaying organic matter. Mo…
113 terms
Plant Pathology Exam 2
What is a fungus?
What are the roles of fungi in nature?
What are the roles of fungi for human…
What are hyphae?
A eukaryotic, heterotropic, absorptive organism that develop…
By breaking down dead organic material, they continue the cyc…
Some fungi provide numerous drugs, like Penicillin and other…
Thread-like structures that are the basic units of fungi.
What is a fungus?
A eukaryotic, heterotropic, absorptive organism that develop…
What are the roles of fungi in nature?
By breaking down dead organic material, they continue the cyc…
130 terms
Plant Pathology
Textbook
What is synonymous with plant pathology?
What are the three components of plant…
What are some differences between huma…
Schumann and d'arcy essential plant pathology 2nd edition
phytopathology.
etiology: causes, biology, taxonomy. Epidemiology: disease sp…
Treatment directed at populations in plants rather than indiv…
Textbook
Schumann and d'arcy essential plant pathology 2nd edition
What is synonymous with plant pathology?
phytopathology.
42 terms
Plant Pathology
Define Disease
How does disease affect cells
How are most diseases identified
When diagnosing a disease how do you e…
Disease in plants is an injurious physiological process, caus…
Cells are programmed to do certain things; disease disrupts w…
Through symptoms
You say that the plant is exhibiting symptoms of a particular…
Define Disease
Disease in plants is an injurious physiological process, caus…
How does disease affect cells
Cells are programmed to do certain things; disease disrupts w…
31 terms
Plant Pathology
Powdery Mildew of Apple
Cleistothecium
Ascus Spores
Canidiophores
Podosphaera leucotricha
a hollow ball that drops off leaves and goes dormant under th…
spores that are shot out of the clestothecium
finger-like structures that rise from colonies of fungus
Powdery Mildew of Apple
Podosphaera leucotricha
Cleistothecium
a hollow ball that drops off leaves and goes dormant under th…
30 terms
Plant Pathology
Late blight will spread among stored p…
Potato tubers are actually
The cork on a potato tuber
Recent evidence supports the hypothesi…
too wet
stems
helps to protect the tuber
Central or North America
Late blight will spread among stored p…
too wet
Potato tubers are actually
stems
207 terms
Plant pathology concepts
Plant
Plant Disease Triangle
Plant pathology
Anton de Bary
the foundation of agriculture and life on earth
Disease = Susceptible Host, Virulent Pathogen and Conducive E…
the study of the causes, development, and management of disea…
the Father of Plant Pathology, proved a fungus caused plant d…
Plant
the foundation of agriculture and life on earth
Plant Disease Triangle
Disease = Susceptible Host, Virulent Pathogen and Conducive E…
56 terms
Plant and Pathology
Why are plants important to people?
What can cause diseases in Plants?
How was the potato established as stap…
What is Vegetative Propagation?
Oxygen, Clothing, Food, Emotion (Sugar-Chocolate) Flowers (Ha…
Bacteria, Viruses, Fungi, Nematodes
1800s- well suited to Irish soil/climate... -low crop labor... -hig…
asexual reproduction where no new organisms arise without see…
Why are plants important to people?
Oxygen, Clothing, Food, Emotion (Sugar-Chocolate) Flowers (Ha…
What can cause diseases in Plants?
Bacteria, Viruses, Fungi, Nematodes
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