Characterization and Genetic Mapping of Black Root Rot Resistance in Gossypium arboreum L.

Wilson, Iain W.; Moncuquet, Philippe; Ellis, Marc H.; White, Rosemary G.; Zhu, Qian; Stiller, Warwick N.; Llewellyn, Danny

doi:10.3390/ijms22052642

Cited by 10 publications

(8 citation statements)

References 38 publications

(40 reference statements)

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“…BRR resistance has not been found in any G. hirsutum or G. barbadense germplasm, so breeding for resistance must access secondary germplasm sources such as diploid cotton species. Resistance to BRR has been identified in G. arboreum (Figure 5) and the inheritance of resistance to BRR was evaluated in an F 6 recombinant inbred population and shows a single semi-dominant locus conferring resistance that was fine mapped to a region on chromosome 1, containing ten genes including five putative resistance-like genes (Wilson et al, 2021).…”

Section: Black Root Rotmentioning

confidence: 99%

Cotton Breeding in Australia: Meeting the Challenges of the 21st Century

et al. 2022

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The Commonwealth Scientific and Industrial Research Organisation (CSIRO) cotton breeding program is the sole breeding effort for cotton in Australia, developing high performing cultivars for the local industry which is worth∼AU$3 billion per annum. The program is supported by Cotton Breeding Australia, a Joint Venture between CSIRO and the program’s commercial partner, Cotton Seed Distributors Ltd. (CSD). While the Australian industry is the focus, CSIRO cultivars have global impact in North America, South America, and Europe. The program is unique compared with many other public and commercial breeding programs because it focuses on diverse and integrated research with commercial outcomes. It represents the full research pipeline, supporting extensive long-term fundamental molecular research; native and genetically modified (GM) trait development; germplasm enhancement focused on yield and fiber quality improvements; integration of third-party GM traits; all culminating in the release of new commercial cultivars. This review presents evidence of past breeding successes and outlines current breeding efforts, in the areas of yield and fiber quality improvement, as well as the development of germplasm that is resistant to pests, diseases and abiotic stressors. The success of the program is based on the development of superior germplasm largely through field phenotyping, together with strong commercial partnerships with CSD and Bayer CropScience. These relationships assist in having a shared focus and ensuring commercial impact is maintained, while also providing access to markets, traits, and technology. The historical successes, current foci and future requirements of the CSIRO cotton breeding program have been used to develop a framework designed to augment our breeding system for the future. This will focus on utilizing emerging technologies from the genome to phenome, as well as a panomics approach with data management and integration to develop, test and incorporate new technologies into a breeding program. In addition to streamlining the breeding pipeline for increased genetic gain, this technology will increase the speed of trait and marker identification for use in genome editing, genomic selection and molecular assisted breeding, ultimately producing novel germplasm that will meet the coming challenges of the 21st Century.

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Section: Black Root Rotmentioning

confidence: 99%

Cotton Breeding in Australia: Meeting the Challenges of the 21st Century

et al. 2022

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“…However, one prominent example is the introgression of genes from G. arboreum and G. thurberi into Upland cotton to improve fiber strength ( Culp and Harrell, 1974 ). In more recent times, the focus has shifted to pest and disease resistance and water and heat tolerance traits from the secondary gene pool ( Constable, 1998 ; Singh et al, 2007 ; Azhar et al, 2009 ; Cottee et al, 2010 , 2014 ; Trapero et al, 2016 ; Li et al, 2020 ; Wilson et al, 2021 ). This is also relevant to the Australian context where significant resources have been focused on using diploid species to improve resistance to Fusarium wilt and Verticillium wilt, as well as pests such as mites and whitefly.…”

Section: Current Germplasm Utilization Within Australian Cotton Germp...mentioning

confidence: 99%

“…Conversely, for traits that are common, the highest performing accessions would be selected for inclusion in the core collection. Importantly, adequate representation from related cotton species must be included, historically sources of host plant resistance to biotic stressors have been identified in landrace and crop wild relatives in the CSIRO cotton breeding program ( Allen et al, 2004 ; Miyazaki et al, 2012 ; Wilson et al, 2021 ). We conclude that CSIRO should pursue the development of a core collection through a greater characterization of our main collection at both a molecular and phenotypic level and augmenting it where necessary with new material from global collections to fill gaps and ensure a high level of genetic diversity across several traits types of interest, but of a size that we can economically maintain through regular regeneration of our stocks.…”

Section: Will Core Collections Provide Benefit To Australian Cotton B...mentioning

confidence: 99%

Core Collections: Is There Any Value for Cotton Breeding?

2022

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Global plant breeding activities are reliant on the available genetic variation held in extant varieties and germplasm collections. Throughout the mid- to late 1900s, germplasm collecting efforts were prioritized for breeding programs to archive precious material before it disappeared and led to the development of the numerous large germplasm resources now available in different countries. In recent decades, however, the maintenance and particularly the expansion of these germplasm resources have come under threat, and there has been a significant decline in investment in further collecting expeditions, an increase in global biosecurity restrictions, and restrictions placed on the open exchange of some commercial germplasm between breeders. The large size of most genebank collections, as well as constraints surrounding the availability and reliability of accurate germplasm passport data and physical or genetic characterization of the accessions in collections, limits germplasm utilization by plant breeders. To overcome these constraints, core collections, defined as a representative subset of the total germplasm collection, have gained popularity. Core collections aim to increase germplasm utilization by containing highly characterized germplasm that attempts to capture the majority of the variation in a whole collection. With the recent availability of many new genetic tools, the potential to unlock the value of these resources can now be realized. The Commonwealth Scientific and Industrial Research Organisation (CSIRO) cotton breeding program supplies 100% of the cotton cultivars grown in Australia. The program is reliant on the use of plant genetic resources for the development of improved cotton varieties to address emerging challenges in pest and disease resistance as well as the global changes occurring in the climate. Currently, the CSIRO germplasm collection is actively maintained but underutilized by plant breeders. This review presents an overview of the Australian cotton germplasm resources and discusses the appropriateness of a core collection for cotton breeding programs.

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“…As global breeding efforts have also yet to be successful in developing a BRR resistant commercial cultivar., disease management is currently based on cropping practices. However, BRR remains a breeding target in the CSIRO program and Wilson et al (2021) characterized and mapped strong resistance to BRR to a single region from G. arboreum that contains several putative resistance-like genes.…”

Section: Emerging Biotic Threats To Australian Cotton Productionmentioning

confidence: 99%

The Past, Present, and Future of Host Plant Resistance in Cotton: An Australian Perspective

Egan

Stiller

2022

Front. Plant Sci.

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Cotton is a key global fiber crop. However, yield potential is limited by the presence of endemic and introduced pests and diseases. The introduction of host plant resistance (HPR), defined as the purposeful use of resistant crop cultivars to reduce the impact of pests and diseases, has been a key breeding target for the Commonwealth Scientific and Industrial Research Organisation (CSIRO) cotton breeding program. The program has seen success in releasing cultivars resistant to Bacterial blight, Verticillium wilt, Fusarium wilt, and Cotton bunchy top. However, emerging biotic threats such as Black root rot and secondary pests, are becoming more frequent in Australian cotton production systems. The uptake of tools and breeding methods, such as genomic selection, high throughput phenomics, gene editing, and landscape genomics, paired with the continued utilization of sources of resistance from Gossypium germplasm, will be critical for the future of cotton breeding. This review celebrates the success of HPR breeding activities in the CSIRO cotton breeding program and maps a pathway for the future in developing resistant cultivars.

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Characterization and Genetic Mapping of Black Root Rot Resistance in Gossypium arboreum L.

Cited by 10 publications

References 38 publications

Cotton Breeding in Australia: Meeting the Challenges of the 21st Century

Cotton Breeding in Australia: Meeting the Challenges of the 21st Century

Core Collections: Is There Any Value for Cotton Breeding?

The Past, Present, and Future of Host Plant Resistance in Cotton: An Australian Perspective

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