Plant Pathology Collection

Root-knot nematode larva, SEM
Root-knot nematode larva. Coloured scanning electron micrograph (SEM) of the whiplike larva of the root-knot nematode Meloidogyne incognita. Here, it is penetrating a tomato root

Rust fungus on a rose leaf, SEM C017 / 7132
Rust fungus on a rose leaf. Coloured scanning electron micrograph (SEM) of rust fungus (Phragmidium sp.) spores emerging from a rose (Rosa sp.) leaf (brown)

Turnip yellow mosaic virus capsid, molecular model. This virus infects a wide variety of plants, including crops such as turnips and cabbages, causing yellow patches on the leaves

Brome mosaic virus capsid, molecular model. This plant virus infects grasses, especially brome grasses, and also barley. It causes mosaic patches of discolouration

Cowpea chlorotic mottle virus capsid, molecular model. This virus (CCMV) infects the cowpea plant (Vigna unguiculata), causing yellow spots of discolouration

Tobacco necrosis virus capsid, molecular model. This plant virus infects a wide rage of plants, including the tobacco plant for which it is named. The virus causes tissue death (necrosis)

Grapevine fanleaf virus capsid, molecular model. This plant virus is named for its infection of grape vines. It is transmitted by the nematode worm Xiphinema index

Rust fungus on a rose leaf, SEM C017 / 7131
Rust fungus on a rose leaf. Coloured scanning electron micrograph (SEM) of rust fungus (Phragmidium sp.) spores emerging from a rose (Rosa sp.) leaf (brown)

Citrus greening disease research C018 / 6323
Citrus greening disease research. Scientists performing a genetic (DNA) analysis of populations of psyllid insects collected in North and South America

Rust fungus on a rose leaf, SEM C017 / 7130
Rust fungus on a rose leaf. Coloured scanning electron micrograph (SEM) of rust fungus (Phragmidium sp.) spores emerging from a rose (Rosa sp.) leaf (mauve)

Ryegrass mottle virus capsid, molecular model. This plant virus is named for its infection of ryegrass, and the discolouration it causes

Bombyx mori densovirus 1 capsid
Bombyx mori densovirus 1 (BmDNV-1), molecular model. This virus infects crustaceans and insects, especially the silkworm (Bombyx mori)

Spraying against ash dieback disease
MODEL RELEASED. Spraying against ash dieback disease. Researcher using a hot fogger to spray a fine mist of fungicide over an ash tree during a field trial

Ash dieback disease fungus, SEM C017 / 8028
Ash dieback disease fungus. Coloured scanning electron micrograph (SEM) of the surface of a fruiting body of the fungus Chalara fraxinea

Ash dieback disease fungus, SEM C017 / 8026
Ash dieback disease fungus. Coloured scanning electron micrograph (SEM) of a fruiting body of the fungus Chalara fraxinea, also known as Hymenoscyphus pseudoalbidus in its fruiting stage

Ash dieback disease fungus, SEM C017 / 8027
Ash dieback disease fungus. Coloured scanning electron micrograph (SEM) of fruiting bodies of the fungus Chalara fraxinea, also known as Hymenoscyphus pseudoalbidus in its fruiting stage

Viral RNA interference complex C015 / 5356
Viral RNA interference complex, molecular model. Small interfering RNA (siRNA) complexed with tomato aspermy virus 2b protein (TAV2b)

Viral RNA interference complex C015 / 5355
Viral RNA interference complex, molecular model. Small interfering RNA (siRNA) complexed with tomato aspermy virus 2b protein (TAV2b)

Mould fungus, SEM
Mould fungus (Penicillium expansum), coloured scanning electron micrograph (SEM). This fungus, also called blue mould, is a pathogen of plant material

Erwinia bacteria, SEM
Erwinia bacteria. Coloured scanning electron micrograph (SEM) of Erwinia carotovora bacteria. This gram-negative flagellated bacterium causes soft rot of plant crops such as potato

Locusts destroying crops. Historical artwork showing the various stages during a locust plague and the effects on crops. At top right is a locust egg

Mouldy grapes on the vine. Ripening bunch of grapes (Vitis vinifera) showing infection by grey mould (Botrytis cinerea). This fungus is pathogenic and widespread and causes a variety of rots

Caterpillars eating hawthorn leaves
caterpillar eat leaf of Crataegus district Närke

Bean rust pustules, SEM
Bean rust (Uromyces sp.) pustules, coloured scanning electron micrograph (SEM). The spores (orange) are emerging from pustules on the underside of a leaf on a bean plant

Bean rust spores, SEM
Bean rust (Uromyces sp.) spores, coloured scanning electron micrograph (SEM). Bean rust is a fungal disease that infects bean plants

Rust fungus infection, light micrograph. Transverse section through a barberry (Berberis sp.) leaf infected by a parasitic rust (Puccinia sp.)

Leaf miner moth damage to a horse chestnut leaf (Aesculus hippocastanum). The leaf miner moth larva (Cameraria ohridella) burrows into the leaves of the horse chestnut causing damage

Bleeding canker on tree bark
Bleeding canker on a horse chestnut tree (Aesculus hippocastanum). Where this pathogen has been active, bark, cambial tissue and the phloem (sugar conducting tissue) are destroyed

Knopper galls on acorns of an English oak (Quercus robur). These swellings are galls filled with the larvae of the gall wasp Andricus quercuscalicis. Photographed in August

Bleeding canker. Liquid exuding from the trunk of a horse chestnut tree (Aesculus hippocastanum). This pathogen destroys bark, cambial tissue and the phloem (sugar conducting tissue)

Palm seeds infected with pestalotia
Palm seeds infected with the parasitic fungus Pestalotia sp. (black growths)

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"Exploring the Intricate World of Plant Pathology: Unveiling the Secrets of Disease" In the realm of plant pathology, nature's battles unfold as microscopic warriors engage in a constant struggle for survival. From bleeding cankers to rust fungi on rose leaves, these captivating images captured by scanning electron microscopy (SEM) offer a glimpse into this hidden world. Behold the intricate beauty of turnip yellow mosaic virus capsid and brome mosaic virus capsid, resembling delicate works of art that belie their destructive potential. The cowpea chlorotic mottle virus capsid and tobacco necrosis virus capsid showcase stunning geometric patterns, reminding us that even in chaos, there is order. Venturing deeper into this unseen realm, we encounter the grapevine fanleaf virus capsid – an enigmatic structure embodying both fragility and resilience. Meanwhile, root-knot nematode larvae lurk beneath the soil surface, their presence causing havoc to plant roots. Rust fungus on rose leaves becomes an artistic masterpiece under SEM's lens - its spores intricately arranged like a painter's brushstrokes across a canvas. These captivating images serve as reminders that beauty can be found even amidst destruction. Amidst these visual wonders lies ongoing research on citrus greening disease – scientists tirelessly striving to unravel its mysteries and find solutions to protect our beloved citrus trees from devastation. As we delve further into this mesmerizing world through SEM imagery, it becomes evident that plant pathology is not merely about studying diseases; it is about understanding complex interactions between plants and pathogens, and is about safeguarding our crops' health while preserving biodiversity for future generations. So let us marvel at these snapshots frozen in time – each image telling a story of resilience or vulnerability within the intricate web woven by nature herself. In embracing plant pathology's challenges head-on, we unlock crucial knowledge vital for sustaining our planet's green tapestry.