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Pane A, Cacciola SO, Adornetto M, et al. Root and Basal Stem Rot of Scotch Broom Caused by Phytophthora citricola and P. drechsleri in Italy. Plant Dis. 2005;89(10):1131doi: 10.1094/PD-89-1131A.
Pane, A., Cacciola, S. O., Adornetto, M., Proietto Russo, G., Badalà, F., & di San Lio, G. M. (2005). Root and Basal Stem Rot of Scotch Broom Caused by Phytophthora citricola and P. drechsleri in Italy. Plant disease, 89(10), 1131. https://doi.org/10.1094/PD-89-1131A
Pane, A, et al. "Root and Basal Stem Rot of Scotch Broom Caused by Phytophthora citricola and P. drechsleri in Italy." Plant disease vol. 89,10 (2005): 1131. doi: https://doi.org/10.1094/PD-89-1131A
Pane A, Cacciola SO, Adornetto M, Proietto Russo G, Badalà F, di San Lio GM. Root and Basal Stem Rot of Scotch Broom Caused by Phytophthora citricola and P. drechsleri in Italy. Plant Dis. 2005 Oct;89(10):1131. doi: 10.1094/PD-89-1131A. PMID: 30791293.
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Plant Dis. 2005 Oct;89(10):1131. doi: 10.1094/PD-89-1131A.

Root and Basal Stem Rot of Scotch Broom Caused by Phytophthora citricola and P. drechsleri in Italy.

Plant disease

A Pane, S O Cacciola, M Adornetto, G Proietto Russo, F Badalà, G Magnano di San Lio

Affiliations

  1. University of Catania, 95123 Catania, Italy.
  2. University of Palermo, 90128 Palermo, Italy.
  3. Nursery "Vivai Campo dei Fiori", S. Venerina, 95010 CT, Italy.
  4. Extension Service, Giarre, 95014 CT, Italy.
  5. Mediterranean University of Reggio Calabria, 89061 Gallina di Reggio Calabria, Italy.

PMID: 30791293 DOI: 10.1094/PD-89-1131A

Abstract

Scotch broom (Cytisus scoparius (L.) Link, Fabaceae), an evergreen shrub native to Europe, is cultivated as a garden plant. In 2003 and 2004, potted plants with symptoms of leaf chlorosis, defoliation, and eventual wilt and associated with root and collar rot were observed in ornamental nurseries in Sicily. As much as 10% of plants were affected in a single nursery. Two species of Phytophthora were consistently isolated alone or together from the same pot with the selective medium of Masago et al. (2). Pure cultures were obtained by single-hypha transfers and the species were identified as P. citricola Sawada (approximately 40% of isolations) and P. drechsleri Tucker (60% of isolations) on the basis of morphological, cultural characters, and electrophoretic phenotype. The isolates of P. drechsleri grew between 10 and 37°C (optimum 27°C) on potato dextrose agar (PDA). The sporangia produced on V8 juice agar (V8A) were ellipsoid to obpyriform, nonpapillate, persistent with internal proliferation, and often forming in a sympodium. Sizes varied, 30 to 60 × 20 to 40 μm (length/width ratio between 1.4 and 2.2). The hyphal swellings were produced in aqueous culture. All isolates were A

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