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Author: Professor Robert Park

25 results found:
  • First reports of wheat stripe rust for 2023 suggest widespread over-seasoning
    First reports of wheat stripe rust for 2023 suggest widespread over-seasoning
    Author: By Professor Robert Park and Dr Mumta Chhetri, Plant Breeding Institute, 2023-08-30T09:00:00+10:00

    The first detection of stripe rust on 7 July this year was about nine weeks later than in 2022; then, it was first detected on 20 May and one of the worst stripe rust epidemics experienced in eastern Australia ensued. Reports of stripe rust after the first detection this year have come from Bethungra, NSW (14 July); Tubbul, NSW (20 July); Smeaton, Victoria (20 July); Naracoorte, South Australia (24 July); and Cressy/Longford, Tasmania (26 July).

  • Making sense of varietal responses to new rust pathotypes
    Making sense of varietal responses to new rust pathotypes
    Author: Professor Robert Park, Plant Breeding Institute, 2023-04-19T09:00:00+10:00

    Knowing the presence of resistance genes in a variety is important in predicting and explaining how a variety will perform if and when a new rust pathotype appears. This is well illustrated by the events that unfolded following the introduction of wheat stripe rust pathotype 198, which originated from either Europe or South America.

  • Identifying pathotypes provides basis of rust control efforts
    Identifying pathotypes provides basis of rust control efforts
    Author: Professor Robert Park, Dr Yi Ding and Dr Mumta Chhetri, 2022-11-02T09:00:00+11:00

    Cereal rust pathotypes (aka races or strains) are isolates of rust that differ in their ability to overcome resistance genes in cereal varieties. Pathotypes are identified by using a sample of rust from a cereal crop to infect a set of cereal varieties (“differentials”) – each carrying a known resistance gene – and determining which resistance genes are overcome and which are not.

  • Three risk keys: research, resistance, reporting
    Three risk keys: research, resistance, reporting
    Author: Professor Robert F. Park, Dr Yi Ding, Dr Mumta Chhetri, University of Sydney, Plant Breeding Institute Cobbitty, 2022-09-04T09:30:00+10:00

    Almost if not all Australian wheat and barley cultivars have at least some resistance to each of the three rust diseases. This resistance saves the wheat and barley industries an estimated $1.1 billion per year

  • Fungicide insensitivity detected in barley leaf rust pathogen
    Fungicide insensitivity detected in barley leaf rust pathogen
    Author: Professor Robert Park, Dr Mumta Chhetri, and Dr Yi Ding, 2022-08-18T09:00:00+10:00

    A key to the success of pathogenic microbes in causing disease is the ability to generate genetic variation. Recent tests by the Plant Breeding Institute has found insensitivity in isolates of the barley leaf rust pathogen Puccinia hordei.

  • Wet weather increases rust potential in 2022
    Wet weather increases rust potential in 2022
    Author: By Professor Robert Park, Plant Breeding Institute, The University of Sydney, 2022-06-12T09:00:00+10:00

    The wet summer and autumn period has provided favourable conditions for rust survival in the lead-up to the 2022 season in eastern Australia. The Plant Breeding Institute has already received early reports of stripe rust in wheat at Temora, Canowindra and Wallendbeen in New South Wales.

  • New stripe rust variant warrants caution
    New stripe rust variant warrants caution
    Author: By Professor Robert Park, Dr Yi Ding, Dr Mumta Chhetri, Plant Breeding Institute, 2022-04-23T09:00:00+10:00

    A new pathotype of stripe rust with increased virulence on barley was detected in 2021. The new pathotype is not expected to cause damage in barley crops in 2022, but it will be critical to monitor the new variant.

  • Rust ‘social diseases’ a biosecurity risk
    Rust ‘social diseases’ a biosecurity risk
    Author: Professor Robert Park, Dr Yi Ding, Dr Mumta Chhetri, 2022-04-03T09:00:00+10:00

    The emergence and spread of variants of cereal rust pathogens, principally via airborne movement, show very strong parallels with recent experiences in the COVID-19 pandemic. Allowing rust to develop in crops of susceptible cereal cultivars allows rust pathogens to build up, spread and mutate.

  • Stripe rust incursions create huge challenges
    Stripe rust incursions create huge challenges
    Author: Professor Robert Park, Dr Yi Ding and Dr Mumta Chhetri, Plant Breeding Institute, the University of Sydney, 2022-01-21T09:00:00+11:00

    The impact of exotic cereal rust incursions was on full display in eastern Australia during the 2021 season, especially across much of the northern grain growing region where stripe rust was very common and, in some cases, caused significant crop infection.

  • Monitoring is key to prevent leaf rust losses
    Monitoring is key to prevent leaf rust losses
    Author: Professor Robert Park, Dr Yi Ding and Dr Davinder Singh, Plant Breeding Institute, the University of Sydney, 2021-10-16T09:00:00+11:00

    Pests and diseases cut global wheat production by 21.5 per cent. Leaf rust has long been considered the most damaging rust pathogen of wheat overall.

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