"Candidatus Phytoplasma australiense" Davis et al. 1997
![Symptoms associated with infection by “Candidatus Phytoplasma australiense”. (a) Witches’ broom, foliar yellowing and reduced leaf size in a Jerusalem cherry shoot on the right compared to a healthy shoot on the left. (b) Leaf yellowing in swan plant. (c) Pink discolouration of celery foliage. (d) Yellowing of celery foliage. (e) Leaf distortion as well as pink and yellow discolouration of the leaf margins in celery. (f) Overall chlorosis and reduced leaf size in boysenberry with foliage from neighbouring healthy plants on either side. (g) Bronzing of older boysenberry leaves. © Australasian Plant Pathology Society. [Image: 166U]](https://data.landcareresearch.co.nz/Image/166U/SysPortalThumb)
![Fig. 1. Symptomatology of sudden decline of cabbage tree at various stages. A, Early-stage sapling showing yellowing of some leaves and tipping of the apex. B, Early-stage sapling leaves showing bands of yellowing extending along the leaves. C, Crown of leaves of a mid-stage sapling showing intensely yellowed leaves surrounding central tuft of green leaves. D, Mid-stage sapling dug from ground showing yellowed leaves and vigorous root growth. E-F, Advanced-stage saplingshowing desiccated leaves. G, Dead sapling. H, Longitudinal section of an early-stage sapling trunk in the vicinity of yellowing leaves, showing discoloration of the vascular traces. I, Longitudinal section of the apex of a mid-stage sapling showing vascular discoloration. J, Longitudinal section of the rhizome of mid-stage saplingshowing vascular discoloration and cortical browning. K-L, Tree photographed in September 1992 (early stage) and 2 months later (late stage) showing rapidity of leafloss. M, Subsequently affected branch of mid-stage tree showing intense yellowing and subsequent desiccation of older leaves. N, Tangential longitudinal section of branches of mid-stage tree showing unaffected wood (left) and water-stained wood (right). O, Tangential longitudinal section of the lower trunk of a mid-stage affected tree showing discoloration of the vascular tissue. P, Lower trunk of advanced-stage tree with bark removed showing cortical damage. © APS. [Image: 3XFZ]](https://data.landcareresearch.co.nz/Image/3XFZ/SysPortalThumb)
![Fig. 3. Transmission electron micrographs of phytoplasma cells within a vascular bundle of a rhizome of a sudden decline–affected sapling cabbage tree (plant COR3). A, sieve tube element with sieve plate. (p) Selected dumbbell-shaped phytoplasma cells are arrowed. B, sieve tube element with ring-shaped cells arrowed. C and D, phytoplasma cells at higher magnification showing denser peripheral cytoplasm and central fibrillar material. Bar repre-sents 500 nm in A and B, and 200 nm in C and D. © APS. [Image: 3XG0]](https://data.landcareresearch.co.nz/Image/3XG0/SysPortalThumb)
![Symptoms associated with infection by “Candidatus Phytoplasma australiense”. (a) Witches’ broom, foliar yellowing and reduced leaf size in a Jerusalem cherry shoot on the right compared to a healthy shoot on the left. (b) Leaf yellowing in swan plant. (c) Pink discolouration of celery foliage. (d) Yellowing of celery foliage. (e) Leaf distortion as well as pink and yellow discolouration of the leaf margins in celery. (f) Overall chlorosis and reduced leaf size in boysenberry with foliage from neighbouring healthy plants on either side. (g) Bronzing of older boysenberry leaves. © Australasian Plant Pathology Society. [Image: 166U]](https://data.landcareresearch.co.nz/Image/166U/SysPortalPreview)
![Fig. 1. Symptomatology of sudden decline of cabbage tree at various stages. A, Early-stage sapling showing yellowing of some leaves and tipping of the apex. B, Early-stage sapling leaves showing bands of yellowing extending along the leaves. C, Crown of leaves of a mid-stage sapling showing intensely yellowed leaves surrounding central tuft of green leaves. D, Mid-stage sapling dug from ground showing yellowed leaves and vigorous root growth. E-F, Advanced-stage saplingshowing desiccated leaves. G, Dead sapling. H, Longitudinal section of an early-stage sapling trunk in the vicinity of yellowing leaves, showing discoloration of the vascular traces. I, Longitudinal section of the apex of a mid-stage sapling showing vascular discoloration. J, Longitudinal section of the rhizome of mid-stage saplingshowing vascular discoloration and cortical browning. K-L, Tree photographed in September 1992 (early stage) and 2 months later (late stage) showing rapidity of leafloss. M, Subsequently affected branch of mid-stage tree showing intense yellowing and subsequent desiccation of older leaves. N, Tangential longitudinal section of branches of mid-stage tree showing unaffected wood (left) and water-stained wood (right). O, Tangential longitudinal section of the lower trunk of a mid-stage affected tree showing discoloration of the vascular tissue. P, Lower trunk of advanced-stage tree with bark removed showing cortical damage. © APS. [Image: 3XFZ]](https://data.landcareresearch.co.nz/Image/3XFZ/SysPortalPreview)
![Fig. 3. Transmission electron micrographs of phytoplasma cells within a vascular bundle of a rhizome of a sudden decline–affected sapling cabbage tree (plant COR3). A, sieve tube element with sieve plate. (p) Selected dumbbell-shaped phytoplasma cells are arrowed. B, sieve tube element with ring-shaped cells arrowed. C and D, phytoplasma cells at higher magnification showing denser peripheral cytoplasm and central fibrillar material. Bar repre-sents 500 nm in A and B, and 200 nm in C and D. © APS. [Image: 3XG0]](https://data.landcareresearch.co.nz/Image/3XG0/SysPortalPreview)
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Details
"Candidatus Phytoplasma australiense" Davis et al., Int. J. Syst. Evol. Microbiol. 47 (1997)
"Candidatus Phytoplasma australiense" Davis et al. 1997
Biostatus
Indigenous, non-endemic
Present
New Zealand
Political Region
Nomenclature
Davis et al.
Davis et al.
1997
ICNP
"Candidatus Phytoplasma australiense" Davis et al. 1997
species
"Candidatus Phytoplasma australiense"
Classification
Vernacular names
Associations
View full associations recordhas host
has host
Taxonomic concepts
"Candidatus Phytoplasma australiense" Davis et al. 1997
"Candidatus Phytoplasma" australiense Davis et al. 1997
"Candidatus Phytoplasma australiense" Davis et al. 1997
"Candidatus Phytoplasma australiense" Davis et al. 1997
"Candidatus Phytoplasma" "Candidatus Phytoplasma australiense"
"Candidatus Phytoplasma australiense" Davis et al. 1997
"Candidatus Phytoplasma" "Candidatus Phytoplasma australiense"
"Candidatus Phytoplasma australiense" Davis et al. 1997
"Candidatus Phytoplasma" australiense Davis et al. 1997
"Candidatus Phytoplasma australiense" Davis et al. 1997
"Candidatus Phytoplasma australiense" Davis et al. 1997
"Candidatus Phytoplasma" australiense Davis et al. 1997
"Candidatus Phytoplasma australiense" Davis et al. 1997
"Candidatus Phytoplasma australiense" Davis et al. 1997
"Candidatus Phytoplasma" australiense Davis et al. 1997
"Candidatus Phytoplasma australiense" Davis et al. 1997
"Candidatus Phytoplasma" australiense Davis et al. 1997
"Candidatus Phytoplasma australiense" Davis et al. 1997
"Candidatus Phytoplasma" australiense Davis et al. 1997
"Candidatus Phytoplasma australiense" Davis et al. 1997
"Candidatus Phytoplasma" australiense Davis et al. 1997
Metadata
dfcde9f4-a9c6-4a18-83e8-6b4da8913792
scientific name
Names_Fungi
17 March 2006
26 June 2022
