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Chen, W.-Q., D. E. Gardner, and D. T. Webb. 1996. Biology and life cycle of Atelocauda koae, an unusual demicyclic rust. Mycoscience 37:91-98.
ABSTRACT
Atelocauda koae, a rust of the native Hawaiian Acacia koa, is considered as a demicyclic species, having spermogonial, aecial, and telial states, but is unusual in production of aeciospores simultaneously with teliospores rather than consecutively. Host inoculation with spores of each state separately confirmed that the life cycle was perpetuated by the telial state, but the aeciospores, while capable of germination and stomal penetration, did not produce detectable infection. This rust therefore behaves as a microcyclic species, and appears to be in evolutionary transition toward this reduced state. Teliospores produced vestigal, permanently attached basidiospores which germinated to produce infective hyphae. The hyphae entered the host either through stomata or penetrated the epidermis directly, with the latter method being more common. Unusual nuclear behavior associated with teliospore germination, in which meiosis occurs in more than one diploid nucleus was observed, in confirmation of an earlier study.

FULL TEXT
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HOSTS
Acacia koa - Koa

PATHOGENS
Atelocauda koae - Phyllode rust

RELEVANT TO BIOCONTROL
No.

KEY WORDS
Acacia koa, Atelocauda koae.

IMAGES
04_001 -- Atelocauda koae 04_001 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_002 -- Atelocauda koae 04_002 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_003 -- Atelocauda koae 04_003 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_004 -- Atelocauda koae 04_004 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_005 -- Atelocauda koae 04_005 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_006 -- Atelocauda koae 04_006 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_007 -- Atelocauda koae 04_007 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_008 -- Atelocauda koae 04_008 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_009 -- Atelocauda koae 04_009 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_010 -- Atelocauda koae 04_010 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_011 -- Atelocauda koae 04_011 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_012 -- Atelocauda koae 04_012 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_013 -- Atelocauda koae 04_013 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_014 -- Atelocauda koae 04_014 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_015 -- Atelocauda koae 04_015 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_016 -- Atelocauda koae 04_016 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_017 -- Atelocauda koae 04_017 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_018 -- Atelocauda koae 04_018 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_019 -- Atelocauda koae 04_019 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_020 -- Atelocauda koae 04_020 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_021 -- Atelocauda koae 04_021 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_022 -- Atelocauda koae 04_022 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_023 -- Atelocauda koae 04_023 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_024 -- Atelocauda koae 04_024 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_025 -- Atelocauda koae 04_025 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_027 -- Atelocauda koae 04_027 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_028 -- Atelocauda koae 04_028 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_029 -- Atelocauda koae 04_029 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_030 -- Botryosphaeria mamane on mamane (Sophora chrysophylla) 04_030 - Botryosphaeria mamane on mamane (Sophora chrysophylla)
PATHOGEN: Aspergillus melleus
04_031 -- Atelocauda koae 04_031 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_032 -- Atelocauda koae 04_032 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_033 -- Atelocauda koae 04_033 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_035 -- Atelocauda koae 04_035 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_036 -- Atelocauda koae 04_036 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_037 -- Atelocauda koae 04_037 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_039 -- Atelocauda koae 04_039 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_040 -- Atelocauda koae 04_040 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_041 -- Atelocauda koae 04_041 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_044 -- Atelocauda koae 04_044 - Atelocauda koae
PATHOGEN: Aspergillus melleus
04_045 -- Atelocauda koae 04_045 - Atelocauda koae
PATHOGEN: Aspergillus melleus
10_008 -- aerial germ tubes entering stomata on phyllode surfaces of koa, Atelocauda digitata 10_008 - aerial germ tubes entering stomata on phyllode surfaces of koa, Atelocauda digitata
PATHOGEN: Aspergillus melleus
10_012 -- aerial germ tubes entering stomata on phyllode surfaces of koa, Atelocauda digitata 10_012 - aerial germ tubes entering stomata on phyllode surfaces of koa, Atelocauda digitata
PATHOGEN: Aspergillus melleus
10_016 -- aerial germ tubes entering stomata on phyllode surfaces of koa, Atelocauda digitata 10_016 - aerial germ tubes entering stomata on phyllode surfaces of koa, Atelocauda digitata
PATHOGEN: Aspergillus melleus

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