Factors affecting flower infection and disease severity of lowbush blueberry by<i>Botrytis cinerea</i>

Hildebrand, P.D.; McRae, K.B.; Lu, X.

doi:10.1080/07060660109506957

Cited by 33 publications

(32 citation statements)

References 13 publications

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“…Botrytis cinerea (strain DSM 5145, DSMZ, Braunschweig, Germany) was used in this study as the model pathogen because it is a known pathogen of blueberry (Hildebrandt et al 2001) and widely used in pathogenesis studies. Pathogen and endophyte spores were diluted in 50 mM HEPES buffer with an estimate of 1,100 spores µl -1 ;.…”

Section: Fungal Infectionmentioning

confidence: 99%

“…After infection by B. cinerea, leaves turn light-brown and grey mould is sometimes found on the surface. Flowers turn brown and shrivel up, and entire flower clusters can become destroyed (Hildebrandt et al 2001). In addition to pathogen attack, bilberry has constant interaction with other microbes in the field.…”

Section: Introductionmentioning

confidence: 98%

“…Some studies have concentrated on the ecology of the parasitic fungus Valdensia heterodoxa on bilberry with respect to nitrogen fertilisation (Witzell and Shevtsova, 2004). The multihost pathogen Botrytis cinerea has been isolated from bilberry (Vlassova et al 2000) and is one of the most significant pathogens found on cultivated blueberries (Hildebrandt et al 2001). After infection by B. cinerea, leaves turn light-brown and grey mould is sometimes found on the surface.…”

Section: Introductionmentioning

confidence: 99%

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Flavonoid biosynthesis and degradation play a role in early defence responses of bilberry (Vaccinium myrtillus) against biotic stress

et al. 2009

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Bilberry (Vaccinium myrtillus) represents one of the richest flavonoid sources among plants. Flavonoids play variable, species-dependent roles in plant defences. In bilberry, flavonoid metabolism is activated in response to solar radiation but not against mechanical injury. In this paper, the defence reaction and biosynthesis of phenolic compounds of bilberry was studied after infection by a fungal endophyte (Paraphaeosphaeria sp.) and a pathogen (Botrytis cinerea). The defence response of bilberry was faster against the endophyte than the pathogen. All flavonoid biosynthesis genes tested were activated by each infection. Biosynthesis and accumulation of phenolic acids, flavan-3-ols and oligomeric proanthocyanidins were clearly elevated in both infected samples. Infection by the pathogen promoted specifically accumulation of epigallocatechin, quercetin-3-glucoside, quercetin-3-O-α-rhamnoside, quercetin-3-O-(4"-HMG)-R-rhamnoside, chlorogenic acid and coumaroyl quinic acid. The endophyte-infected plants had a higher content of quercetin-3-glucuronide and coumaroyl iridoid. Therefore, accumulation of individual phenolic compounds could be specific for each infection. Quantity of insoluble proanthocyanidins was the highest in control plants, suggesting that they might act as storage compounds and become activated by degradation upon infection.

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Section: Fungal Infectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Flavonoid biosynthesis and degradation play a role in early defence responses of bilberry (Vaccinium myrtillus) against biotic stress

et al. 2009

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“…The total number of seed produced by M. micrantha in the moderate rainfall region (99 705 m À2 ) was significantly higher than that seen in the high rainfall region (89 044 m À2 ) of Viti Levu. The significantly smaller production of seed in the high rainfall region may be attributed to the reduced number of floral visits by pollinators that take place there (Hegland et al, 2009) and because prolonged wet conditions may also result in fungal infections that reduce viable pollen production and seed viability (Hildebrand et al, 2001;Xu et al, 2009). Seed production observed in Fiji was considerably less than that previously reported from China (210 468 m À2 ; Zhang et al, 2003), and it is possible that environmental conditions such as temperature and rainfall may play a role.…”

Section: Discussionmentioning

confidence: 99%

Seed biology of Mikania micrantha in Viti Levu, Fiji

2018

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Summary Mikania micrantha (mile‐a‐minute) reproduces both by seed and vegetatively. A study to determine the possible pollinators, seed production rates, temperature and salinity limitations to germination and its seedbank size and persistence was conducted in Viti Levu, Fiji. Representatives of the Diptera had the greatest percentage of all floral visits (38%), followed by Hymenoptera (34%) and Lepidoptera (27%), while the honeybee was the most recurring visitor (18% of all visits). Flower heads (capitula) within the inflorescence commonly formed four viable seeds, resulting in 60 820 filled seed being produced per m2. However, the seedbanks formed were not massive (600 seed m−2) and they were moderately persistent (T50: 1–3 years). Seed germination from both high and moderate rainfall regions occurred rapidly, under a wide range of temperature regimes, with no primary dormancy being observed. This study indicates that the seed reproductive success of M. micrantha in the two rainfall regions of Fiji is due to a number of factors, including the production of large numbers of flowers, successful pollination by local insects and the subsequent production of a large number of viable seeds. These seeds have high viability, no dormancy and are capable of forming small‐to‐medium seedbanks that are moderately long‐lived. In addition, seeds can germinate under a wide range of temperature and salinity conditions. This knowledge on seed production, biology, longevity and salt tolerance is vital in the development of management plans of M. micrantha in Fiji.

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“…Information on infection periods (conducive environmental conditions) has enabled researchers to develop forecasting models to provide recommendations for disease management for a number of other diseases. These include botrytis blight of blueberry (Hildebrand et al., 2001), peanut leaf spot (Cu & Phipps, 1993), tomato anthracnose (Byrne et al., 1998), legume anthracnose (Chakraborty et al. , 2004) and anthracnose of saskatoon berries (Holtslag et al.…”

Section: Discussionmentioning

confidence: 99%

Environmental and host requirements for field infection of blueberry fruits by Colletotrichum acutatum in British Columbia

2006

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Higher recovery of Colletotrichum acutatum , the causal agent of anthracnose (ripe-rot), from blueberry tissues during the growing seasons of 2002 and 2003 was found at bloom and ripe berry than at other stages of plant development. The effects of leaf-wetness duration and ambient temperature on fruit infection frequency were determined during the growing seasons of 2001-03. Potted 2-year-old blueberry plants were exposed for 1-week periods to prevailing environmental conditions and natural inoculum in a commercial field, and grown to harvest, when fruit infection was assessed. Three peaks of infection were observed: early during bloom, mid-season during the mature green berry stage, and later in the season when berries had ripened. Weather data collected simultaneously indicated that a minimum of 10 h of leaf wetness at 11 ° C was sufficient for fruit infection. These conditions preceded each peak of infection. To determine whether peaks of infection in the field were also caused by changes in host susceptibility or available inoculum, groups of potted blueberry plants were artificially inoculated at weekly intervals during the growing season of 2004, exposed to prevailing environmental conditions, and fruit infection assessed at harvest. Flowers and developing fruits were found to be susceptible throughout the season, indicating that specific peaks of infection were associated with environmental conditions and availability of inoculum.

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Factors affecting flower infection and disease severity of lowbush blueberry byBotrytis cinerea

Cited by 33 publications

References 13 publications

Flavonoid biosynthesis and degradation play a role in early defence responses of bilberry (Vaccinium myrtillus) against biotic stress

Flavonoid biosynthesis and degradation play a role in early defence responses of bilberry (Vaccinium myrtillus) against biotic stress

Seed biology of Mikania micrantha in Viti Levu, Fiji

Environmental and host requirements for field infection of blueberry fruits by Colletotrichum acutatum in British Columbia

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