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Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian 1925

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Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian, Amer. J. Bot. 12 445 (1925)
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian 1925

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Exotic
Present
New Zealand
Political Region

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(R.E. Sm. & E.H. Sm.) Leonian
R.E. Sm. & E.H. Sm.
Leonian
1925
445
ICN
species
Phytophthora citrophthora

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citrophthora

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Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian 1925

Boucher (1912) recorded brown rot on citrus trees in New Zealand. Cunningham (1925a) described both a fruit rot and a stem canker caused by the fungus. Fletcher (1954) reported that in wet seasons infection can be severe in the Auckland area resulting in loss of all fruit on the trees; he recommended the application during winter months of copper sprays such as Bordeaux mixture. Fletcher (1957b) showed that when Poncirus trifoliata was used as a rootstock it was more resistant to the formation of stem cankers than sweet orange stock.

Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian 1925

Type: Radicicolous Fungi; Description: Colonies on agar with a characteristic finely radiate growth, aerial mycelium fluffy. Chlamydospores produced by some, but not all isolates, 25–35 μm in diameter. Sporangia mostly intercalary, very variable in shape and size, ranging from globose to ovoid to ellipsoidal to extremely distorted, often with two papillae, 25–90 × 18–60 μm. Oogonia, antheridia, and oospores not known.
Distribution: Nelson, Marlborough Sounds.; 1st Record: Boucher (1912: as Pythiacytis citrophthora).
Significance: Of no significance in forestry. ‘Brown rot of citrus’ can cause serious losses. Use of resistant root-stock gives very good control (Atkinson 1971).; Host(s): Citrus grandis × reticulata, C. ichangensis × reticulata, C. limon, C. sinensis, Nothofagus fusca, Poncirus trifoliata.

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Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian 1925
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian 1925
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian 1925
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian (1925)
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian 1925
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian (1925)
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian 1925
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian (1925)
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian 1925
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian (1925)
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian 1925
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian (1925)
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian 1925
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian (1925)
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian 1925
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian (1925)
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian 1925
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian 1925
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian 1925
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian (1925)
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian 1925
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian (1925)
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian 1925
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian (1925)
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian 1925
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian (1925)
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian 1925
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian (1925)
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian 1925
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian (1925)
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian 1925
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian (1925)
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian 1925
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian (1925)
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian 1925
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian (1925)

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Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian 1925
[Not available]
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian 1925
New Zealand
Auckland
Phytophthora citrophthora (R.E. Sm. & E.H. Sm.) Leonian 1925
New Zealand
Nelson

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1cb19b09-36b9-11d5-9548-00d0592d548c
scientific name
Names_Fungi
16 June 2001
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