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Van Haeften S, Kang Y, Dudley C, Potgieter A, Robinson H, Dinglasan E, Wenham K, Noble T, Kelly L, Douglas CA, Hickey L, Smith MR. Fusarium wilt constrains mungbean yield due to reduction in source availability. AoB Plants 2024; 16:plae021. [PMID: 38650718 PMCID: PMC11034375 DOI: 10.1093/aobpla/plae021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Accepted: 04/07/2024] [Indexed: 04/25/2024]
Abstract
Mungbean is an important source of plant protein for consumers and a high-value export crop for growers across Asia, Australia and Africa. However, many commercial cultivars are highly vulnerable to biotic stresses, which rapidly reduce yield within the season. Fusarium oxysporum is a soil-borne pathogen that is a growing concern for mungbean growers globally. This pathogen causes Fusarium wilt by infecting the root system of the plant resulting in devastating yield reductions. To understand the impact of Fusarium on mungbean development and productivity and to identify tolerant genotypes, a panel of 23 diverse accessions was studied. Field trials conducted in 2016 and 2021 in Warwick, Queensland, Australia under rainfed conditions investigated the variation in phenology, canopy and yield component traits under disease and disease-free conditions. Analyses revealed a high degree of genetic variation for all traits. By comparing the performance of these traits across these two environments, we identified key traits that underpin yield under disease and disease-free conditions. Aboveground biomass components at 50 % flowering were identified as significant drivers of yield development under disease-free conditions and when impacted by Fusarium resulted in up to 96 % yield reduction. Additionally, eight genotypes were identified to be tolerant to Fusarium. These genotypes were found to display differing phenological and morphological behaviours, thereby demonstrating the potential to breed tolerant lines with a range of diverse trait variations. The identification of tolerant genotypes that sustain yield under disease pressure may be exploited in crop improvement programs.
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Affiliation(s)
- Shanice Van Haeften
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, QLD 4067, Australia
| | - Yichen Kang
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, QLD 4067, Australia
| | - Caitlin Dudley
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, QLD 4067, Australia
| | - Andries Potgieter
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, QLD 4067, Australia
| | - Hannah Robinson
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, QLD 4067, Australia
| | - Eric Dinglasan
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, QLD 4067, Australia
| | - Kylie Wenham
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, QLD 4067, Australia
| | - Thomas Noble
- Department of Agriculture and Fisheries Queensland, QLD 4370, Australia
| | - Lisa Kelly
- Department of Agriculture and Fisheries Queensland, QLD 4370, Australia
| | - Colin A Douglas
- Department of Agriculture and Fisheries Queensland, QLD 4370, Australia
| | - Lee Hickey
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, QLD 4067, Australia
| | - Millicent R Smith
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, QLD 4067, Australia
- School of Agriculture and Food Sustainability, The University of Queensland, QLD 4343, Australia
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