Plan of attack for aggressive Ascochyta isolates

Ford, Rebecca and Sambasivam, Prabhakaran and Mehmood, Yasir and Christie, Melody and Vaghefi, Niloofar ORCID: https://orcid.org/0000-0003-0430-4856 and Sparks, Adam ORCID: https://orcid.org/0000-0002-0061-8359 and Bar, Ido (2021) Plan of attack for aggressive Ascochyta isolates. GRDC GroundCover, May-Jun 2021. Suppl..


Abstract

Ascochyta blight in chickpeas has become more aggressive over the past five years. The proportion of isolates collected annually from all major growing regions across Australia where Ascochyta epidemics have occurred that are able to cause severe disease is as high as 70 per cent for PBA HatTrick. Researchers are targeting pathogen biology and genetics to identify future opportunities to overcome this aggressiveness. Work is underway to limit the increasing aggressiveness of Ascochyta blight in chickpeas. Ascochyta blight pathogen in chickpea is becoming more aggressive against commonly grown varieties. Caused by the fungus Ascochyta rabiei, it arrived in Australia in the 1970s, most likely on infected seed. Ascochyta has since established across all Australian chickpea growing regions and has rapidly evolved to become highly pathogenic – meaning it has overcome resistance in many varieties. To develop more resistant varieties and provide useful advice for growers, we need to understand the mechanisms that enable the pathogen to overcome both genetic resistance and our best management practices.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: No
Item Status: Live Archive
Additional Information: GRDC online article.
Faculty/School / Institute/Centre: Current - Institute for Life Sciences and the Environment - Centre for Crop Health (24 Mar 2014 -)
Faculty/School / Institute/Centre: Current - Institute for Life Sciences and the Environment - Centre for Crop Health (24 Mar 2014 -)
Date Deposited: 20 Jan 2022 06:01
Last Modified: 16 Feb 2022 00:16
Uncontrolled Keywords: Ascochyta blight; chickpeas; Australia
Fields of Research (2008): 06 Biological Sciences > 0607 Plant Biology > 060704 Plant Pathology
06 Biological Sciences > 0605 Microbiology > 060505 Mycology
06 Biological Sciences > 0604 Genetics > 060411 Population, Ecological and Evolutionary Genetics
Fields of Research (2020): 31 BIOLOGICAL SCIENCES > 3107 Microbiology > 310705 Mycology
31 BIOLOGICAL SCIENCES > 3108 Plant biology > 310805 Plant pathology
Socio-Economic Objectives (2008): E Expanding Knowledge > 97 Expanding Knowledge > 970106 Expanding Knowledge in the Biological Sciences
B Economic Development > 82 Plant Production and Plant Primary Products > 8205 Winter Grains and Oilseeds > 820503 Grain Legumes
D Environment > 96 Environment > 9604 Control of Pests, Diseases and Exotic Species > 960403 Control of Animal Pests, Diseases and Exotic Species in Farmland, Arable Cropland and Permanent Cropland Environments
Socio-Economic Objectives (2020): 28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280102 Expanding knowledge in the biological sciences
26 PLANT PRODUCTION AND PLANT PRIMARY PRODUCTS > 2603 Grains and seeds > 260303 Grain legumes
URI: http://eprints.usq.edu.au/id/eprint/45517

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