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Image Subject Name Scientific Name Description
0656077 citrus greening Candidatus Liberibacter asiaticus Citrus greening bacterium: brown necrotic or aborted seeds in infected mandarin.
0656076 citrus greening Candidatus Liberibacter asiaticus Leaf mottle on grapefruit, a characteristic symptom caused by citrus greening bacterium but also seen on trees infected by Spiroplasma citri.
0656075 citrus greening Candidatus Liberibacter asiaticus Greening-affected sweet orange showing yellow shoot symptoms.
0746054 lime witches’ broom phytoplasma Candidatus Phytoplasma aurantifolia Lime trees (Citrus aurantifolia) affected by lime witches' broom phytoplasma.
0746051 stubborn, little leaf Spiroplasma citri Sweet orange tree infected by Spiroplasma citri (left), causal agent of stubborn, showing stunting as compared to the healthy tree (right). Note the rounded shape of the infected tree.
0746052 stubborn, little leaf Spiroplasma citri Lobsided fruit from a sweet orange tree infected by Spiroplasma citri. Thickening of the albedo at the peduncular end can be observed while the albedo at the stylar end is very thin.
0746031 lime witches’ broom phytoplasma Candidatus Phytoplasma aurantifolia Close up of a witches' broom on a lime tree (Citrus aurantifolia) affected by lime witches' broom phytoplasma.
0746032 lime witches’ broom phytoplasma Candidatus Phytoplasma aurantifolia Lime shoot from a healthy tree (right); shoots from a tree affected by lime witches' broom phytoplasma; from right to left: shoots with early symptoms (leaves are still large), witches' broom before and after leaf drying.
0746033 stubborn, little leaf Spiroplasma citri Sweet orange tree infected by Spiroplasma citri. Note rosettes of cup-shaped leaves and the presence of off season flowers and fruit at all stages of maturation.
0746034 stubborn, little leaf Spiroplasma citri Normal seeds from a healthy fruit (upper row); partially aborted seeds from a Spiroplasma citri infected fruit (lower row).
0746027 lime witches’ broom phytoplasma Candidatus Phytoplasma aurantifolia Lime trees (Citrus aurantifolia) affected by lime witches' broom phytoplasma.

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