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    Home > Active Ingredient News > Drugs Articles > Morphological characteristics of various molds -- 5

    Morphological characteristics of various molds -- 5

    • Last Update: 2010-03-26
    • Source: Internet
    • Author: User
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    1.3.5 on potato glucose agar, the aeromycelia of Fusarium pyrisporum grew well, with spider like and silk like sometimes powdery, up to 7mm-8mm high, pale rose, light pink magenta and magenta The reverse is magenta or mauve with different shades The branches of hyphae are usually opposite and whorled The small conidia are usually pseudocephalic, sometimes short chain After the conidia fall off, the mycelial layer is spread as fine powder Small conidia are spherical, pear shaped, lemon shaped and obovate shaped, and there are also small conidia with oval, spindle shaped and narrow melon seed shaped 0 ~ 1 septum, transparent and smooth The diameter of globular spore is 4um-8um, the microspores of other shapes have no septum, [(5) 8um-10 (- 12)] Um * [(2.5 -) 3um-6 (- 8) um] Chlamydospores are round or oval like, most of them are epiphytic, a few are terminal, solitary or several are in clusters, or nodular, and store yellow Fusarium pyrisporum is mainly parasitic on Cereals, which can produce T-2 toxin, Fusarium oxysporum enol and butylenate vinegar 1.3.6 on the potato glucose agar medium, the aerial hyphae of Fusarium oxysporum grow luxuriantly, cotton like, slightly powdery on the surface, initially white, and quickly turn cherry red The reverse side of the colony is dark purple red The small conidia are formed on the pseudobranches (sporogenous cells with multiple buds) of the conidia peduncles and are usually slightly sparse Small conidia are spherical, pear shaped, elliptic, sub lanceolate or sub sickle shaped, One by one Large conidia are produced in the pedicel of aeromycelia or conidia They are sickle shaped, spindle sickle shaped, lanceolate, curved, pedicellum, 3-5-septum Chlamydospores are intergrowth, single or paired, nodular or clustered This fungus mainly lives on wheat, oats, corn, melon and other crops It can produce T-2 toxin, butenoic acid vinegar and fusarienol 1.3.7 on potato glucose agar medium, Fusarium xylinum grows fast, cotton like, white, milky yellow to brown The large conidia are spindle sickle shaped, arc bow shaped, lanceolate, eel shaped, parabola shaped, hyperbolic shaped or nearly straight, the central cells are obviously expanded, the apical cells are narrow and thin, the growth of thorns or lines, the foot cells are obvious, 4-7 septa Chlamydospores are intercalated in mycelium, in clusters or nodules, with very thick defect like protuberances or smooth, yellow brown or transparent, and the diameter of a single chlamydospore is 6um-10um Ascus stage: Gibberella alterniflora Fusarium Equisetum is mainly parasitized on soybean seeds and seedlings, wheat, barley and rye It can produce fusarienol diacetate, zearalenone, fusarienol neweggplant disease and neku butylenate 6.3.8 when Fusarium solanacearum strains were cultured on potato glucose agar medium, the growth of aeromycelia was good, cotton like, low flat, or spider like, slightly high On the wall of the test tube, there is a tendency of knitting into mycelium rope, which is white, pale to light purple, pale to light storage, pale to light yellow The reverse is light Heather, light Heather - dark blue, light yellow cream Whether there is or not the myxospora of aeromycelia, if any, it is white, brown, yellow, blue, green or the color between them Small conidia are pseudocephalic, oval, oval, long oval, short dachshund, comma shaped, 0-1 septum, smooth (4um-15um) * (3um-5um [change range (3um-19um) * (2um-6um)] Large conidia are nearly sickle shaped, spindle sickle shaped, spindle lanceolate, spindle column shaped and slightly curved A few strains have large conidial curved spores, which have the same diameter in a large distance, short apical cells, slightly narrow, thin or blunt, and podocytes The wall of large conidia was significantly thick, with 2 septa to 5 (- 7) septa, most of which were 3 septa Chlamydospores are produced on Chaetomium medium, terminal or intergrowth, single cell or double cell In a few strains, they are short chain or nodular, with smooth or small sink like protuberances, light yellow pig color, or colorless The single cell chlamydospores are usually round or ellipsoid, with a diameter of about 7um-14 (- 16) um Ascus stage: red shell and red shell Fusarium solanacearum can cause Fusarium Wilt of broad bean, root rot, stem rot and fruit dry rot of various cultivated crops, such as peanut, beet, potato, tomato, sesame, corn and wheat, and can produce Fusarium solanacearum enol and zearalenone 6.3.9 Fusarium oxysporum strains grew well on potato glucose agar medium, cotton like or spider like, usually white, pale rose, light cream yellow, light rose red, preserved purple or pale purple The reverse side is colorless, light storage color or light gray light purple, light pig rose color There was a trend of cordlike formation of aeromycelium or not There are or not myxospores on aeromycelia Myxospores are colorless or light rose, pig, blue Sclerotia with or without, if any, green blue black or other colors The diameter is about 0.5mm-0.6mm The aerial hyphae are septate, branched, transparent, with a diameter of [1.5um-3 (- 5) um] Small conidia were born in aeromycelia, pseudocephalate or myxospora The shape of small conidia can be ellipse, spindle ellipse, near column, narrow dachshund, comma, kidney like, oval, with 0-1 septum, smooth, kernel (4 -) 6um-14 (- 18) um) * [(1.8 -) 2um-3 [~ 3.5) um] Large conidia are spindle-shaped, sickle shaped, elliptical curved, with long apical cells, gradually narrow and thin, slightly sharp, very sharp or slightly narrow and blunt, with or without podocytes The wall of chlamydospores is thin, with 1 (to) 3-5 intervals, and some as many as 7 intervals The chlamydospores in mycelium are terminal or intergrowth, single cell or double cell, smooth or rough or with defects The chlamydospores of single cell are round or rectangular, with a diameter of about 5um-13 (to 16) um Fusarium oxysporum can parasitize on the seeds of corn, wheat and barley
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