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Calonectria (Cylindrocladium) species associated with dying Pinus cuttings.

Lombard L, Rodas CA, Crous PW, Wingfield BD, Wingfield MJ - Persoonia (2009)

Bottom Line: Two species were identified, namely one undescribed species, and Cy. gracile, which is allocated to Calonectria as Ca. brassicae.The new species, Ca. brachiatica, resides in the Ca. brassicae species complex.Pathogenicity tests with Ca. brachiatica and Ca. brassicae showed that both are able to cause disease on Pinus maximinoi and P. tecunumanii.

View Article: PubMed Central - PubMed

Affiliation: Department of Microbiology and Plant Pathology, Tree Protection Cooperative Programme, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria 0002, South Africa;

ABSTRACT
Calonectria (Ca.) species and their Cylindrocladium (Cy.) anamorphs are well-known pathogens of forest nursery plants in subtropical and tropical areas of the world. An investigation of the mortality of rooted Pinus cuttings in a commercial forest nursery in Colombia led to the isolation of two Cylindrocladium anamorphs of Calonectria species. The aim of this study was to identify these species using DNA sequence data and morphological comparisons. Two species were identified, namely one undescribed species, and Cy. gracile, which is allocated to Calonectria as Ca. brassicae. The new species, Ca. brachiatica, resides in the Ca. brassicae species complex. Pathogenicity tests with Ca. brachiatica and Ca. brassicae showed that both are able to cause disease on Pinus maximinoi and P. tecunumanii. An emended key is provided to distinguish between Calonectria species with clavate vesicles and 1-septate macroconidia.

No MeSH data available.


Related in: MedlinePlus

Calonectria brassicae. a. Macroconidiophore on SNA; b. macroconidia; c. fertile branches; d, e. clavate vesicles. — Scale bars = 10 μm.
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Figure 5: Calonectria brassicae. a. Macroconidiophore on SNA; b. macroconidia; c. fertile branches; d, e. clavate vesicles. — Scale bars = 10 μm.

Mentions: Calonectria brassicae (Panwar & Bohra) L. Lombard, M.J. Wingf. & Crous, comb. nov. — MycoBank MB513423; Fig. 5


Calonectria (Cylindrocladium) species associated with dying Pinus cuttings.

Lombard L, Rodas CA, Crous PW, Wingfield BD, Wingfield MJ - Persoonia (2009)

Calonectria brassicae. a. Macroconidiophore on SNA; b. macroconidia; c. fertile branches; d, e. clavate vesicles. — Scale bars = 10 μm.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2802723&req=5

Figure 5: Calonectria brassicae. a. Macroconidiophore on SNA; b. macroconidia; c. fertile branches; d, e. clavate vesicles. — Scale bars = 10 μm.
Mentions: Calonectria brassicae (Panwar & Bohra) L. Lombard, M.J. Wingf. & Crous, comb. nov. — MycoBank MB513423; Fig. 5

Bottom Line: Two species were identified, namely one undescribed species, and Cy. gracile, which is allocated to Calonectria as Ca. brassicae.The new species, Ca. brachiatica, resides in the Ca. brassicae species complex.Pathogenicity tests with Ca. brachiatica and Ca. brassicae showed that both are able to cause disease on Pinus maximinoi and P. tecunumanii.

View Article: PubMed Central - PubMed

Affiliation: Department of Microbiology and Plant Pathology, Tree Protection Cooperative Programme, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria 0002, South Africa;

ABSTRACT
Calonectria (Ca.) species and their Cylindrocladium (Cy.) anamorphs are well-known pathogens of forest nursery plants in subtropical and tropical areas of the world. An investigation of the mortality of rooted Pinus cuttings in a commercial forest nursery in Colombia led to the isolation of two Cylindrocladium anamorphs of Calonectria species. The aim of this study was to identify these species using DNA sequence data and morphological comparisons. Two species were identified, namely one undescribed species, and Cy. gracile, which is allocated to Calonectria as Ca. brassicae. The new species, Ca. brachiatica, resides in the Ca. brassicae species complex. Pathogenicity tests with Ca. brachiatica and Ca. brassicae showed that both are able to cause disease on Pinus maximinoi and P. tecunumanii. An emended key is provided to distinguish between Calonectria species with clavate vesicles and 1-septate macroconidia.

No MeSH data available.


Related in: MedlinePlus