Germination of Botrytis cinerea conidia in the presence of quintozene, tecnazene and dichloran

Esuruoso, O. F.; Price, T. V.; Wood, R. K. S.

doi:10.1016/s0007-1536(68)80007-5

Cited by 11 publications

(4 citation statements)

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“…These findings are consistent with those of Esuruoso et al (1968) and Priest and Wood (1961), who showed that PCNB did not interfere with germination of sensitive fungi, but rather suppressed hyphal elongation. The consistent inhibition of hyphal elongation by PCNB in petri plates was correlated with a persistent inhibition of root colonization by two of three fungi and a strong depression of sporulation by two of three fungi in association with pea plants.…”

Section: Discussionsupporting

confidence: 92%

Mycorrhizae, biocides, and biocontrol 3. Effects of three different fungicides on developmental stages of three AM fungi

Schreiner

Bethlenfalvay

1997

Biol Fert Soils

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The effects of biocide use on nontarget organisms, such as arbuscular mycorrhizal (AM) fungi, are of interest to agriculture, since inhibition of beneficial organisms may counteract benefits derived from pest and disease control. Benomyl, pentachloronitrobenzene (PCNB) and captan were tested for their effects on the germination and early hyphal growth of the AM fungi Glomus etunicaturn (Becket & Gerd.), Glomus mosseae (Nicol. & Gerd.). Gerd. and Trappe and Gigaspora rosea (Nicol & Schenck) in a silty-clay loam soil placed in petri plates. Application of fungicides at 20 mg active ingredient (a.i.) kg-'soil inhibited spore germination by all three AM-fungal isolates incubated on unsterilized soil for 2 weeks. However, fungicides applied at 10 mg a.i. kg -1 soil had variable effects on AM-fungal isolates. Fungicide effects on germination and hyphal growth of G. etunicatum were modified by soil pasteurization and CO2 concentration in petri plates and also by placing spores below the soil surface followed by fungicide drenches. Effects of fungicides on mycorrhiza formation and sporulation of AM fungi, and the resulting host-plant response, were evaluated in the same soil in associated pea (Pisum sativum L.) plants. Fungicides applied at 20 mg a.i. kg -1 soil did not affect the root length colonized by G. etunicatum, but both benomyl and PCNB reduced sporulation by this fungus. Benomyl and PCNB reduced the root length colonized by G. rosea at 48 and 82 days after transplanting. PCNB also reduced G. mosseae-colonized root length at 48 and 82 days, but benomyl only affected root length colonized by G. mosseae at the earlier time point. Only PCNB reduced sporulation by G. mosseae, consistent with its effect on root length colonized by this fungus, captan reduced the root length colonized by G. rosea at 48 days, but not at 82 days, and reduced colonization by G. mosseae at 82 days, but not at 48 days. Captan did not affect sporulation by any of the fungi. G. rosea spore production was highly variable, but benomyl appeared to reduce sporulation by this fungus. Overall, G. etunicatum was the most tolerant to fungicides in association with pea plants in this soil, and G. rosea the most sensitive. Benomyl and PCNB were overall more toxic to these fungi than captan. Interactions of AM fungi and fungicides were highly variable and biological responses depended on fungus-fungicide combinations and on environmental conditions.

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Section: Discussionsupporting

confidence: 92%

Mycorrhizae, biocides, and biocontrol 3. Effects of three different fungicides on developmental stages of three AM fungi

Schreiner

Bethlenfalvay

1997

Biol Fert Soils

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“…Antibiotics such as cyanein, actinomycin C, griseofulvin and actidione which interfere with the biosynthesis of nucleic acids and protein all induce morphological changes in Botrytis cinerea. The fungicides tecnazine and dicloran also produce swollen and branched germ tubes in B. cinerea growing on agar (Esuruoso, Price &Wood, 1968) resembling the effects of benomyl. Dicloran is an inhibitor of protein synthesis (Weber & Ogawa, 1965).…”

Section: V Richmond and R J Pring 92mentioning

confidence: 89%

The Effect of Benomyl on the Fine Structure of Botrytis fabae

Richmond

Pring

1971

Journal of General Microbiology

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“…These results provide a further and commercially relevant example of tolerance of Botrytis cinerea to benomyl and also add benomyl again to the list of other fungicides tolerated by B. cinerea viz., quintozene (Reavill, 1954), tecnazene and dicloran (Esuruoso et al 1968;Webster et al, 1970;Lankow, 1971) copper mercury salts, thiram, zineb, ziram, ferbam, nabam and captan Wood, 1958, 1959a, 19596). Unlike most of these examples, however, we found tolerance to a relatively high level of benomyl immediately on isolation.…”

Section: Discussionmentioning

confidence: 99%

Tolerance to Benomyl in Botrytis cinerea and Penicillium corymbiferum

Jarvis

Hargreaves

1973

Plant Pathology

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SUMMARY Isolates of Botrytis cinerea which grew rapidly and sporulated on media containing 1,000 p.p.m. benomyl were obtained from mummified fruits of (a) strawberry plants treated one year previously with a Benlate drench to control Verticillium dahliae, and (b) raspberry plants variously sprayed with Benlate to control B. cinerea. Isolates of Penicillium corymbiferum with the same level of benomyl tolerance were obtained from Benlate‐treated tulip bulbs. Isolates of V. dahliae were also obtained from the strawberry plants treated one year previously with Benlate drench, but they were intolerant of benomyl.

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Germination of Botrytis cinerea conidia in the presence of quintozene, tecnazene and dichloran

Cited by 11 publications

References 1 publication

Mycorrhizae, biocides, and biocontrol 3. Effects of three different fungicides on developmental stages of three AM fungi

Mycorrhizae, biocides, and biocontrol 3. Effects of three different fungicides on developmental stages of three AM fungi

The Effect of Benomyl on the Fine Structure of Botrytis fabae

Tolerance to Benomyl in Botrytis cinerea and Penicillium corymbiferum

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