Pests > Pests Entities > Bacteria > Agrobacterium, passionfruit, New Caledonia



Pests > Pests Entities > Bacteria > Agrobacterium, passionfruit, New Caledonia

Pests Pests Entities Bacteria Agrobacterium, passionfruit, New Caledonia

Crown gall

July 2002. New Caledonia asked about the corky, very hard lumps growing from the stems, some partly green. Even the tendrils are affected.

It was identified as crown gall, Agrobacterium tumefaciens. The CABI Crop Protection Compendium lists Passiflora as a host. A photo of crown gall on raspberry canes was sent for comparison; it looks quite similar. Such symptoms had been seen elsewhere in the Pacific, and mites were not found, so being caused by bacteria was thought a good possibility.

The photo to the left is from raspberry.