Environment and Sporulation in Phytopathogenic Fungi V. Monilinia Fruc'ticola (Wint.) Honey: Effect of Water Relations on Regeneration of Conidia in Vivo

Corbin, JB; Cruickshank, Iam

doi:10.1071/bi9630099

Cited by 16 publications

(5 citation statements)

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“…It was noted that the new conidia produced on the surface of these fruit originated from sporodochial cushions formed immediately after infection. Thus, regeneration of conidia occurred from the same sporulating area as reported for M. fructicola (Corbin & Cruickshank, 1963). This indicates a relationship between sporulating structures formed after infection and later (re)sporulation on the same fruit.…”

Section: Discussionsupporting

confidence: 60%

“…Corbin & Cruickshank (1963) showed that apricot fruitlets, collected in the field after a brown rot epidemic caused by M. fructicola , were able to produce several crops of conidia. They showed that with short incubation periods of 12 h at 20°C and 98% RH, fruitlets produced up to 10 crops of conidia before regeneration of conidia ceased.…”

Section: Discussionmentioning

confidence: 99%

“…This process might also have influenced the results in the experiments reported here. Knowledge about the effect of environmental factors, especially temperature, on regeneration of conidia is very limited (Corbin & Cruickshank, 1963).…”

Section: Discussionmentioning

confidence: 99%

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Factors affecting mummification and sporulation of pome fruit infected by Monilinia fructigena in Dutch orchards

2002

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A 2-year field experiment was conducted to study mummification and subsequent sporulation in spring of apple (cvs James Grieve, Golden Delicious) and pear (cv . Conference) fruits infected by Monilinia fructigena . Most mummified fruits were found in James Grieve and Conference, whereas in late-infected Golden Delicious, fruits were still soft when examined in April. In the first year, these late-infected fruits had a significantly higher sporulation intensity per sporulating fruit ( P = 0·05) compared with Golden Delicious fruits infected 9 and 5 weeks before harvest maturity, which were partly mummified. It was concluded that early-and late-infected fruits contributed to primary inoculum in the next season. In a postinfection regime of 25 ° C and 65-75% relative humidity under controlled conditions, the number of Conference fruits sporulating decreased rapidly, and after 12 weeks' incubation sporulation had completely ceased. After 8 weeks' incubation, sporulation intensity in the postinfection regime at 10 ° C was significantly higher than that at 20 and 25 ° C in a first experiment with inoculated unripe fruit ( P = 0·05). Results of a second experiment with ripe fruit were less clear. These results are discussed in relation to orchard disease management.

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Section: Discussionsupporting

confidence: 60%

Section: Discussionmentioning

confidence: 99%

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Factors affecting mummification and sporulation of pome fruit infected by Monilinia fructigena in Dutch orchards

2002

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“…This was supported by Corbin's (1962) work on M. fructicola where RH did not affect sporulation intensity on fruits once infection was established. It is well known that overwintered mummified fruits of brown rot need free water to sporulate (Corbin & Cruickshank, 1963; Byrde & Willetts, 1977). Results from the present study suggest that free water on freshly infected fruits is not essential for sporulation of M. fructigena .…”

Section: Discussionmentioning

confidence: 99%

Effects of temperature and relative humidity on conidial germination and viability, colonization and sporulation ofMonilinia fructigena

Guerin

Robinson

2001

Plant Pathology

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Experiments were conducted to investigate the effects of temperature and relative humidity (RH) on the in vitro germination and viability of conidia of the apple brown rot fungus (Monilinia fructigena), and on colonization and sporulation on detached fruits by M. fructigena. Conidia only germinated under near-saturation humidity ($ 97% RH) and the rate of germination initially increased with temperature to a maximum at < 23±258C and then decreased. Conidia germinated rapidly ± more than 70% of viable conidia had germinated within 2 h at 20 and 258C. The rate of colonization on detached fruits increased log-linearly with increasing temperature. Sporulation on detached fruits was not observed at 5 or 258C; sporulation appeared to be unaffected by either temperature (10± 208C) or RH (45±98%) once infection was established. Detached conidia remained viable for a long period of time, up to 20 days, the longest assessment time in this study, depending on storage temperature (10 or 208C) and RH (45 or 85%). Temperature appeared to be more important than RH in affecting conidial viability. Low temperature and high RH resulted in reduced loss of conidial viability. Storage at 108C and 85% RH for up to 20 days appeared not to affect conidial viability. These results indicate that environmental conditions during the main UK growing seasons are unlikely to be limiting factors for the development of brown rot on apple.

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“…The literature describes that fruit decay symptoms and signs on ripe peaches occur respectively within 48 h (Corbin and Cruickshank 1963;Ogawa et al 1995;Adaskaveg et al 2008) and 72 h (Hewitt and Leach 1939;Jenkins 1965;Sanoamuang and Gaunt 1995) after infection, but in some case those periods could vary (Biggs and Northover 1988;Sanoamuang and Gaunt 1995). In many pathosystems, variation in incubation and latent period are mainly caused by fruit injury (Corbin 1963;Xu and Robinson 2000a) and the effect of incubation temperature during spore production (Eversmeyer et al 1980;Bertolini and Tian 1997;Xu and Robinson 2000b).…”

Section: Discussionmentioning

confidence: 99%

Comparative in vivo and in vitro study on Monilia fructicola causing brown rot of stone fruit in Brazil and California

Lichtemberg

Zeviani

Michailides

et al. 2016

Trop. plant pathol.

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Stone fruit production plays an important economical role in southern Brazil as well as in California, United States. In both countries, brown rot caused by Monilinia fructicola is the most important stone fruit disease, responsible for significant pre-and post-harvest fruit losses. The United States is among the main importers of stone fruit to Brazil. Imported fruit carrying the pathogen may introduce isolates with greater ability to infect stone fruit orchards in Brazil. In this study, 26 M. fructicola isolates from Brazil and California, recovered from commercial stone fruit orchards, were randomly selected and compared based on in vitro (optimum growth temperature, mycelial growth rate, germination, spore production and germ tube rate) and in vivo (sporulation, area under disease progress curve, incubation and latent period) studies on brown rot infection components. The isolates behaved similarly for most of the studied variables, except for germ tube length and sporulation on fruit, which were higher in isolates from California and Brazil, respectively. The negative correlation between these variables may be disadvantage for isolates from California to cause infections in the main peach cultivar grown in South Brazil. Significant differences in incubation and latent period and the area under disease progress curve were found among isolates from a same country. Such differences may be due to intraspecific diversity associated with the occurrence of the perfect stage in California, and by the broad sampling area from where isolates from Brazil were obtained. It is still difficult to determine the effect of isolates arising from imported California fruits in Brazilian stone fruit orchards. Further genetic variability studies and comparative epidemiology in the field may help to understant the real threat that foreign isolates represent.

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Environment and Sporulation in Phytopathogenic Fungi V. Monilinia Fruc'ticola (Wint.) Honey: Effect of Water Relations on Regeneration of Conidia in Vivo

Abstract: An investigation into the role of water relations in determining conidial regeneration of Monilinia f1"Ucticola (Wint.) Honey on infected leaves, peduncles, and mummified fruitlets of apricot (Prunus armeniaca L. cv. Trevatt) demonstrated the following points:

Cited by 16 publications

References 2 publications

Factors affecting mummification and sporulation of pome fruit infected by Monilinia fructigena in Dutch orchards

Factors affecting mummification and sporulation of pome fruit infected by Monilinia fructigena in Dutch orchards

Effects of temperature and relative humidity on conidial germination and viability, colonization and sporulation ofMonilinia fructigena

Comparative in vivo and in vitro study on Monilia fructicola causing brown rot of stone fruit in Brazil and California

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