Influence of Temperature and Moisture on Growth, Spore Production, and Conidial Germination of<i>Monilinia laxa</i>

Tamm, Lucius; Flückiger, W.

doi:10.1094/phyto-83-1321

Cited by 48 publications

(66 citation statements)

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“…The optimal temperature and wetness duration ranges for germination were similar to those previously observed for M. laxa (TAMM & FLÜCKIGER, 1993) and M. fructicola (WEAVER, 1950;PHILLIPS, 1982;CASALS et al, 2010). Parameters estimated by the beta generalized function were similar for both Monilinia species, except for the shape parameter (b 5 ), showing that the Sporulation was detected in less than 50% of the inoculated fruit; latent period was greater than 9 days.…”

Section: Discussionsupporting

confidence: 81%

Comparative analysis of Monilinia fructicola and M. laxa isolates from Brazil: monocyclic components of peach brown rot

2017

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Section: Discussionsupporting

confidence: 81%

Comparative analysis of Monilinia fructicola and M. laxa isolates from Brazil: monocyclic components of peach brown rot

2017

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“…We found that (a) M. laxa conidia emit germ tubes when the temperature is 4°C and the RH is between 80% and 100%, and (b) M. fructicola conidia are not able to emit germ tubes under these conditions. These results are in accordance with those that were reported by Tamm and Flückiger (1993) and Tian and Bertolini (1999), who found that M. laxa conidia can germinate when the temperature is as low as − 4°C. The ability of M. laxa conidia to germinate at low temperatures has also been reported by Watson et al (2002), Casals et al (2010) and Papavasileiou et al (2015) who reported that M. fructicola conidia can germinate at low temperatures, namely 0 and 5°C.…”

Section: Tablesupporting

confidence: 93%

“…Tamm and Flückiger (1993) have also reported that maximum germination of M. laxa conidia occurred when temperature was between 15 and 25°C and RH was 100%. We found that (a) M. laxa conidia emit germ tubes when the temperature is 4°C and the RH is between 80% and 100%, and (b) M. fructicola conidia are not able to emit germ tubes under these conditions.…”

Section: Tablementioning

confidence: 87%

“…do not germinate at 0.87 a w . It has also been reported that (a) the mycelial growth of M. laxa is better than that of M. fructicola isolates at low temperatures on blossoms and fruit (Papavasileiou et al, 2015;Tamm et al, 1995), (b) M. laxa conidia can germinate at temperatures as low as −4°C on fruit (Tian and Bertolini, 1999), and (c) mycelial growth of M. laxa can still occur at 0°C (Tamm and Flückiger, 1993).…”

Section: Introductionmentioning

confidence: 93%

“…are also dependent on ambient temperature, relative humidity (RH), and water availability (water activity: a w ) (Luo et al, 2001;Tamm and Flückiger, 1993;Xu et al, 2001). Casals et al (2010) reported that more than 80% of viable conidia of M. fructicola and M. fructigena can germinate within 2 h and those of M. laxa can germinate within 4 h at 25°C and 0.99 a w on culture media.…”

Section: Introductionmentioning

confidence: 99%

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Fruit maturity and post-harvest environmental conditions influence the pre-penetration stages of Monilinia infections in peaches

Garcia-Benitez

Melgarejo

Cal

2017

International Journal of Food Microbiology

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a b s t r a c tBrown rot caused by the fungi Monilinia laxa (Aderhold and Ruhland) Honey, M. fructicola (Winter) Honey, or M. fructigena (Aderhold and Ruhland) is a serious fungal disease of peaches. The fungal infection process begins when fungal conidia germinate on the fruit surface to produce germ tubes and/or appressoria, and the incidence of brown rot increases as fruit approaches maturity. The interaction between the fungal infection process, peach maturity, and the environmental conditions is not well understood. Accordingly, the objectives of this investigation were to investigate germ tube and appressorial formation by M. laxa and M. fructicola when they were exposed to peach skin from mature and immature fruit at various temperatures and relative humidities (RHs). The greatest number of germ tubes was found when M. laxa or M. fructicola was incubated in culture medium which contained a skin extract of mature peaches. In contrast, the greatest number of appressoria was found when M. laxa or M. fructicola was incubated in culture medium which contained a skin extract of immature peaches. Although M. fructicola produced the same number of germ tubes and appressoria at 4°C, M. fructicola produced more germ tubes than appressoria at temperatures higher than 10°C. M. laxa produced more germ tubes than appressoria at any temperature, except when it was incubated for 48 h on culture medium which contained a skin extract of immature peaches at 10°C at 80% or 100% RH, or at 25°C at 60% RH. M. laxa conidia germinated better than M. fructicola conidia at low temperatures. Germ tube and appressorial formation by Monilinia spp. were influenced by fruit postharvest handling. The number of germ tubes that were formed by M. laxa conidia was significantly greater than that for M. fructicola when the conidia were incubated at 100% RH, and this number increased after 3 days of refrigeration. The number of appressoria that were formed by both Monilinia spp. also increased after 3 consecutive days of refrigeration. Negligible or no germination of M. fructicola and M. laxa conidia occurred when the RH was 60%. We concluded that the dissimilar abilities of M. laxa and M. fructicola to germinate and form appressoria at low temperatures conferred a competitive advantage to M. laxa to survive during fruit postharvest refrigeration and cold storage at 4°C.

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Relevance of the main postharvest handling operations on the development of brown rot disease on stone fruits

et al. 2017

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From all studied handling operations on stone fruit packing houses, hydrocooling is the most relevant in the development of brown rot disease. Duration of the treatment seems to be more important than chlorine concentration. In addition, hydrocooling and water dump were less relevant in peaches than in nectarines. As a general trend, hydrocooling and water dump reduced incidence on fruit with recent infections (2 or 24 h before operation); however, when infections have been established (48 h before operation) diseases were not reduced. © 2017 Society of Chemical Industry.

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Influence of Temperature and Moisture on Growth, Spore Production, and Conidial Germination ofMonilinia laxa

Cited by 48 publications

References 0 publications

Comparative analysis of Monilinia fructicola and M. laxa isolates from Brazil: monocyclic components of peach brown rot

Comparative analysis of Monilinia fructicola and M. laxa isolates from Brazil: monocyclic components of peach brown rot

Fruit maturity and post-harvest environmental conditions influence the pre-penetration stages of Monilinia infections in peaches

Relevance of the main postharvest handling operations on the development of brown rot disease on stone fruits

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