Andersen, Mark T.; Beever, Ross E.; Sutherland, Paul W.; Forster, Richard L. S. 2001: Association of “Candidatus Phytoplasma australiense” with Sudden Decline of Cabbage Tree in New Zealand. Plant Disease 85(5): 462-469.
![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)
![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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Andersen, Mark T.; Beever, Ross E.; Sutherland, Paul W.; Forster, Richard L. S. 2001: Association of “Candidatus Phytoplasma australiense” with Sudden Decline of Cabbage Tree in New Zealand. Plant Disease 85(5): 462-469.
10.1094/PDIS.2001.85.5.462
Article
Taxonomic concepts
"Candidatus Phytoplasma" australiense Davis et al. 1997
Associations
View full associations record
Cited scientific names
Metadata
6cf9e917-1968-4bb6-8798-70347d6cef7d
reference
Names_Fungi
26 June 2022
