Two Interesting Hyphomycetes

Subramanian, C. V.; Lodha, B.C.

doi:10.1139/b64-098

Cited by 20 publications

(10 citation statements)

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“…C.V. Subramanian, and C. geniculata (Tracy et Earle) Boedijn in the "geniculata" group, had been widely accepted as independent species (Groves and Skolko 1945;Subramanian 1953Subramanian , 1956Ellis 1966Ellis , 1971Sivanesan 1987). However, the differences of these species are difficult to recognize because of inconsistency of morphological characteristics used for species delimitation among them.…”

Section: Introductionmentioning

confidence: 99%

Conidium morphology of Curvularia geniculata and allied species

2003

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The species delimitation of some members of Curvularia with 4-septate conidia was studied. Conidial shapes and sizes were variable to some extent depending on isolates and herbarium materials examined. By crossing experiments, C. affinis, C. fallax, and C. senegalensis showed no reproductive isolation from C. geniculata. Some isolates obtained from culture collections and from fields were not fertile with tester isolates of C. geniculata. Their conidial morphology were somewhat different from C. geniculata. SEM observations also revealed their morphological difference from C. geniculata. Restriction fragment length polymorphism (RFLP) of total DNA was analyzed with several isolates of species belonging to the "geniculata" group of genus Curvularia. DNA fingerprinting with probes prepared from GPD-1 and tublin coding regions gave clear differences among them, resulting in different banding positions. The results of analyses also confirmed that C. senegalensis, C. affinis, and C. fallax are synonymous to Curvularia geniculata. Two populations having 4-septate conidia with warping hilum and one population with rough surface conidia were clearly different from C. geniculata.

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Section: Introductionmentioning

confidence: 99%

Conidium morphology of Curvularia geniculata and allied species

2003

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“…Indeed, many members of the Xylariaceae family are hyaline at first and colored later on with age. Regardless of this, Subramanian from India related two Acrostaphylus species: Acrostaphylus hyperparasiticus Subram, with globose conidia, and Acrostaphylus lignicola Subram, with conidia oval to elliptical up to 7 m long (22). These two taxa do not correspond to the present isolate.…”

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confidence: 59%

“…Subramanian restricted Nodulisporium to pale colored species and placed the dematiaceous species in the genus Acrostaphylus Arnaud ex Subramanian (22). Greenhalgh and Chesters (12) do not accept this division, based on pigmentation.…”

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confidence: 99%

Isolation of a Nodulisporium Species from a Case of Cerebral Phaeohyphomycosis

Umabala¹,

Lakshmi²,

Murthy³

et al. 2001

J Clin Microbiol

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A fungal infection of the brain of a 55-year-old male patient is reported. The lesion and involved fungus were located exclusively in the right medial temporo-parietal region. The patient was successfully treated with surgical resection of the lesion and antifungal chemotherapy. Few pathogenic dematiaceous fungi exhibit neurotropism and can cause primary infection in the central nervous system (CNS). The etiological agent is described as a Nodulisporium species. To date Nodulisporium has never been reported as an agent of CNS infection in humans. CASE REPORTA 55-year-old male patient was admitted to the neurosurgery facility of Nizam's Institute of Medical Sciences (NIMS), Hyderabad, Andhra Pradesh, India, with an admitting diagnosis of right choroidal meningioma.Two months prior to admittance to NIMS, the patient experienced rapid deterioration of vision in the right eye along with associated numbness in the right half of the face. For 1 year prior to admittance he had also experienced difficulty in chewing food and intermittent episodes of transient loss of consciousness associated with weakness on the right side, mainly involving the limbs. The recovery time from such episodes was about 1 to 2 h. There was no history of generalized tonic or clonic seizures. He did not have a history of hypertension or diabetes and was not on any medication.A computerized tomogram (CT) of the brain was performed by the referring hospital ( Fig. 1). CT sections 5 mm thick were obtained in the posterior fossa, and CT sections 10 mm thick were obtained thereafter, both before and after administration of intravenous contrast (ionic contrast [40 ml of 76% Uro Video; Bracco]). The scan revealed a large, irregularly shaped, slightly hyperdense, densely enhancing lesion in the right medial temporo-parietal region of about 44.3 by 33.2 mm. It showed a large, irregular, hypodense white matter with surrounding edema. There was a shift in the midline structures to the left. The ventricular system and sulcal cerebrospinal fluid spaces were effaced more on the right. The overall impression was of a sphenoid meningioma in the right medial temporoparietal region with cerebral edema. With these clinical details, the patient was referred to NIMS for further management.The patient was conscious and coherent. There were no signs of anemia, clubbing, or palpitation. His pulse and respiratory rate were within the normal range. There was no lymphadenopathy or organomegaly.The right eye showed exophthalmos, with no pupillary light reaction and primary optic atrophy on fundus examination. The left eye was normal. Paresis of the right fifth and sixth cranial nerves was present. There was loss of motor and sensory components of the fifth cranial nerve. There were no other sensory or motor deficits.The peripheral blood picture and biochemistry were within normal limits. Hemoglobin was 13.5 g%, packed cell volume was 39%, and total leukocyte counts and differential counts were within normal range. The test of anti-human immunodeficiency virus antibodies w...

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“…Conidia of several other genera including Trimmatostroma Corda (1837), Bahusakala Subram. (1958) andMatsushimaea Subram. (1977) share similar morphologies with those of Taeniolina.…”

Section: Discussionmentioning

confidence: 99%