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BACTERIAL DISEASE BACTERIAL DISEASE

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Page 1: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

BACTERIAL DISEASEBACTERIAL DISEASE

Page 2: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

BACTERIABACTERIA

• Lack chlorophyll and cannot produce own Lack chlorophyll and cannot produce own foodfood

• Require 400 to 600X magnificationRequire 400 to 600X magnification

• Flagella to swimFlagella to swim

Page 3: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

BACTERIABACTERIA

PATHOGENPATHOGEN

• Pseudomonas, XanthomonasPseudomonas, Xanthomonas, , Agrobacterium, Agrobacterium, and and ErwiniaErwinia

Page 4: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

BACTERIABACTERIA

LIFE CYCLELIFE CYCLE

• Dormant in plant material or soilDormant in plant material or soil

• Reproduce by mother cell dividing in halfReproduce by mother cell dividing in half– 2 daughter cells2 daughter cells

Page 5: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

BACTERIABACTERIA

• Halo around bacterial leaf spotHalo around bacterial leaf spot

Page 6: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire
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BACTERIABACTERIA

INFECTIONINFECTION

• Do not produce spores (there are Do not produce spores (there are exceptions)exceptions)

• Pathogen appears as Pathogen appears as oozeooze

Page 8: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire
Page 9: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

BACTERIABACTERIA

INFECTIONINFECTION

• Enter plant through natural openings or Enter plant through natural openings or woundswounds

Page 10: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

BACTERIABACTERIA

CONTROLCONTROL

• Prevent injuries and introductionPrevent injuries and introduction

• Copper containing fungicides Copper containing fungicides – Bordeaux mixture (Copper sulfate and lime)Bordeaux mixture (Copper sulfate and lime)– KocideKocide

Page 11: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

FIRE BLIGHTFIRE BLIGHT

HOST: Rose family (pear, apples, quince…)HOST: Rose family (pear, apples, quince…)

• Bradford pearBradford pear

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FIRE BLIGHTFIRE BLIGHT

SYMPTOMSSYMPTOMS

• "Scorched" branches"Scorched" branches– Shepherd’s crookShepherd’s crook

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FIRE BLIGHTFIRE BLIGHT

INFECTIONINFECTION

• Enter through flowersEnter through flowers

• "Ooze" at cankers"Ooze" at cankers

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FIRE BLIGHTFIRE BLIGHT

CONTROLCONTROL

• Resistant cultivarsResistant cultivars

• Pruning and sanitizingPruning and sanitizing

Page 15: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

Fire BlightFire Blight

Page 16: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

Fire BlightFire Blight

Page 17: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

Fire BlightFire Blight

Page 18: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

Fire BlightFire Blight

Page 19: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

Bacterial Leaf SpotBacterial Leaf Spot

• IvyIvy

Page 20: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

VIRUSVIRUS

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VIRUSVIRUS

• True obligate parasitesTrue obligate parasites

• Outside living cells act like Outside living cells act like chemical substanceschemical substances

• Cannot be cultured on Cannot be cultured on artificial mediaartificial media

• Virions: virus particles, Virions: virus particles, seen only with a electron seen only with a electron microscopemicroscope

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VIRUSVIRUS

SYMPTOMSSYMPTOMS

• Mosaic / mottlingMosaic / mottling

• Loss of vigorLoss of vigor

• Distorted growthDistorted growth

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VIRUSVIRUS

INFECTIONINFECTION

• Infected for lifeInfected for life

• Commonly transmitted by insectsCommonly transmitted by insects– Thrips…Thrips…

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VIRUSVIRUS

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VIRUSVIRUS

INFECTIONINFECTION

• Rarely kill plant in short amount of timeRarely kill plant in short amount of time

• Predispose plantsPredispose plants

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VIRUSVIRUS

CONTROLCONTROL

• Avoid transmitting by plant partsAvoid transmitting by plant parts

• Reduce vectorsReduce vectors

• ResistanceResistance

Page 27: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

Citrus Greening DiseaseCitrus Greening Disease

• Severe damage to citrus industrySevere damage to citrus industry

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Citrus Greening DiseaseCitrus Greening Disease

• Vectored by Asian citrus psyllidVectored by Asian citrus psyllid

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Citrus Greening DiseaseCitrus Greening Disease

• Fruit inedible and juice undrinkableFruit inedible and juice undrinkable

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CAMELLIA YELLOW MOTTLECAMELLIA YELLOW MOTTLE

SYMPTOMSSYMPTOMS

• Sporadic leaves and flowersSporadic leaves and flowers

• Not stable year to year Not stable year to year

• Flowers lose color, variegatedFlowers lose color, variegated

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CAMELLIA YELLOW MOTTLECAMELLIA YELLOW MOTTLE

CONTROLCONTROL

• Avoid contaminated stockAvoid contaminated stock

• Remove plant, if undesirable Remove plant, if undesirable

Page 32: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

Canna Virus Canna Virus

• Vein streakingVein streaking

• Weakened plantsWeakened plants

• Lack of floweringLack of flowering

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Canna VirusCanna Virus

• Aphids suspected vectorAphids suspected vector

• No resistant varietiesNo resistant varieties

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Page 35: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire
Page 36: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire
Page 37: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire
Page 38: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

Nonviral VariegationNonviral Variegation

• Genetic mutation is heritableGenetic mutation is heritable

• Some cells stop producing chlorophyllSome cells stop producing chlorophyll

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Viral VariegationViral Variegation

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Firepower NandinaFirepower Nandina

• Propagated in South CarolinaPropagated in South Carolina

• Infected with two viruses Infected with two viruses – Cucumber mosaic virusCucumber mosaic virus – Nandina mosaic virusNandina mosaic virus

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Hosta VirusHosta Virus

Page 42: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

Hosta VirusHosta Virus

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Page 44: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire
Page 45: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire
Page 46: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

NEMATODESNEMATODES

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NEMATODESNEMATODES

• Unsegmented roundwormsUnsegmented roundworms

• Can be found in every form of plant and Can be found in every form of plant and animalanimal

• Most are considered beneficialMost are considered beneficial

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NEMATODESNEMATODES

SPECIESSPECIES

• Sting, Root knot, Cyst, and othersSting, Root knot, Cyst, and others

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NEMATODESNEMATODES

SPECIESSPECIES

• There are beneficial species attacking There are beneficial species attacking insectsinsects

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NEMATODESNEMATODES

SYMPTOMSSYMPTOMS

• StuntingStunting

• YellowingYellowing

• Wilting Wilting

• Stubby rootsStubby roots

Page 51: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

NEMATODESNEMATODES

SYMPTOMSSYMPTOMS

• Only Root Knot and Cyst nematodes Only Root Knot and Cyst nematodes cause ID symptomscause ID symptoms

• ID by labID by lab

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NEMATODESNEMATODES

SYMPTOMSSYMPTOMS

• CystCyst nematodes nematodes

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NEMATODESNEMATODES

DAMAGEDAMAGE

• Severely damage rootsSeverely damage roots

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NEMATODESNEMATODES

DAMAGEDAMAGE

• Foliar nematodesFoliar nematodes

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NEMATODESNEMATODES

CONTROLCONTROL

• FumigationFumigation

• Biological controlsBiological controls– Chitin, fungalChitin, fungal

• NematicidesNematicides

Page 56: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

GALLSGALLS

Page 57: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

GALLSGALLS

SYMPTOMSSYMPTOMS

• Distortions or swellingsDistortions or swellings

• Leaves, flowers, branches, or trunkLeaves, flowers, branches, or trunk

Page 58: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire
Page 59: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire
Page 60: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire
Page 61: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

GALLSGALLS

Insect-causingInsect-causing

• Harbor the eggs and larvaHarbor the eggs and larva

• Larval secretions induce abnormal growthLarval secretions induce abnormal growth– Hyperplasia Hyperplasia

• Protection and foodProtection and food

Page 62: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

GALLSGALLS

BacteriaBacteria

• Crown gall (Crown gall (Agrobacterium Agrobacterium tumefacienstumefaciens))

• Gall at root crown (often)Gall at root crown (often)

• Can kill young plantsCan kill young plants

Page 63: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

• http://www.missouribotanicalgarden.org/http://www.missouribotanicalgarden.org/gardens-gardening/your-garden/help-for-gardens-gardening/your-garden/help-for-the-home-gardener/advice-tips-the-home-gardener/advice-tips-resources/pests-and-problems/diseases/resources/pests-and-problems/diseases/bacterial-galls.aspxbacterial-galls.aspx

Bacterial Gall on RosemaryBacterial Gall on Rosemary

Page 64: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

Bacterial Gall on RosemaryBacterial Gall on Rosemary

• http://www.missouribotanicalgarden.org/http://www.missouribotanicalgarden.org/gardens-gardening/your-garden/help-for-gardens-gardening/your-garden/help-for-the-home-gardener/advice-tips-the-home-gardener/advice-tips-resources/pests-and-problems/diseases/resources/pests-and-problems/diseases/bacterial-galls.aspxbacterial-galls.aspx

Page 65: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

Bacterial Gall on RosemaryBacterial Gall on Rosemary

• http://www.missouribotanicalgarden.org/http://www.missouribotanicalgarden.org/gardens-gardening/your-garden/help-for-gardens-gardening/your-garden/help-for-the-home-gardener/advice-tips-the-home-gardener/advice-tips-resources/pests-and-problems/diseases/resources/pests-and-problems/diseases/bacterial-galls.aspxbacterial-galls.aspx

Page 66: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

Bacterial Gall on RosemaryBacterial Gall on Rosemary

• http://www.missouribotanicalgarden.org/http://www.missouribotanicalgarden.org/gardens-gardening/your-garden/help-for-gardens-gardening/your-garden/help-for-the-home-gardener/advice-tips-the-home-gardener/advice-tips-resources/pests-and-problems/diseases/resources/pests-and-problems/diseases/bacterial-galls.aspxbacterial-galls.aspx

Page 67: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

Bacterial Gall on RosemaryBacterial Gall on Rosemary

• http://www.missouribotanicalgarden.org/http://www.missouribotanicalgarden.org/gardens-gardening/your-garden/help-for-gardens-gardening/your-garden/help-for-the-home-gardener/advice-tips-the-home-gardener/advice-tips-resources/pests-and-problems/diseases/resources/pests-and-problems/diseases/bacterial-galls.aspxbacterial-galls.aspx

Page 68: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

Crown gallCrown gall

• Crown gall (Crown gall (Agrobacterium tumefaciensAgrobacterium tumefaciens))

Page 69: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

GALLSGALLS

Crown gall (Crown gall (Agrobacterium tumefaciensAgrobacterium tumefaciens))

Page 70: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

GALLSGALLS

CONTROLCONTROL

• Prune out gallsPrune out galls

• Purchase healthy stockPurchase healthy stock

Page 71: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire

Leaf GallLeaf Gall

PATHOGEN: FungalPATHOGEN: Fungal

HOST: Azalea and SassanquaHOST: Azalea and Sassanqua

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GALLSGALLS

SYMPTOMSSYMPTOMS

• Individual leaves thick and fleshyIndividual leaves thick and fleshy

• Early springEarly spring

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GALLSGALLS

CONTROLCONTROL

• Hand pickHand pick

• Rarely chemicalRarely chemical

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Page 75: BACTERIAL DISEASE. BACTERIA Lack chlorophyll and cannot produce own foodLack chlorophyll and cannot produce own food Require 400 to 600X magnificationRequire