Evaluation of soybean genotypes for reaction to natural field infection by Cercospora species causing purple seed stain

Li, Shuxian; Sciumbato, G. L.; Boykin, Debbie; Shannon, Grover; Chen, Pengyin

doi:10.1371/journal.pone.0222673

Cited by 14 publications

(10 citation statements)

References 38 publications

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“…Resistance to PSD was identified in six commercial cultivars in inoculated and non-inoculated tests (Li et al 2017a). In a study evaluating the response of PIs to purple seed stain (PSS), nine PIs with resistance to PSS were also resistant to PSD (Li et al 2019). PI 80,837 also has resistance to both PSS and PSD (Jackson et al 2005(Jackson et al , 2006.…”

Section: Phomopsis Seed Decaymentioning

confidence: 99%

Breeding for disease resistance in soybean: a global perspective

et al. 2022

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Key message This review provides a comprehensive atlas of QTLs, genes, and alleles conferring resistance to 28 important diseases in all major soybean production regions in the world. Abstract Breeding disease-resistant soybean [Glycine max (L.) Merr.] varieties is a common goal for soybean breeding programs to ensure the sustainability and growth of soybean production worldwide. However, due to global climate change, soybean breeders are facing strong challenges to defeat diseases. Marker-assisted selection and genomic selection have been demonstrated to be successful methods in quickly integrating vertical resistance or horizontal resistance into improved soybean varieties, where vertical resistance refers to R genes and major effect QTLs, and horizontal resistance is a combination of major and minor effect genes or QTLs. This review summarized more than 800 resistant loci/alleles and their tightly linked markers for 28 soybean diseases worldwide, caused by nematodes, oomycetes, fungi, bacteria, and viruses. The major breakthroughs in the discovery of disease resistance gene atlas of soybean were also emphasized which include: (1) identification and characterization of vertical resistance genes reside rhg1 and Rhg4 for soybean cyst nematode, and exploration of the underlying regulation mechanisms through copy number variation and (2) map-based cloning and characterization of Rps11 conferring resistance to 80% isolates of Phytophthora sojae across the USA. In this review, we also highlight the validated QTLs in overlapping genomic regions from at least two studies and applied a consistent naming nomenclature for these QTLs. Our review provides a comprehensive summary of important resistant genes/QTLs and can be used as a toolbox for soybean improvement. Finally, the summarized genetic knowledge sheds light on future directions of accelerated soybean breeding and translational genomics studies.

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Section: Phomopsis Seed Decaymentioning

confidence: 99%

Breeding for disease resistance in soybean: a global perspective

et al. 2022

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“…The bacterial pustule and wildfire disease are representative seed-borne bacterial diseases (Kang et al, 2021;Myung et al, 2009), while purple spot, leaf spot, and seed decay are representative seed-borne fungal diseases of soybean (Li et al, 2019;Sun et al, 2013). Two of the fungal pathogens we have as target species require an explanation for including them in our study.…”

Section: Discussionmentioning

confidence: 99%

Culturable Endophytes Associated with Soybean Seeds and Their Potential for Suppressing Seed-Borne Pathogens

et al. 2022

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Seed-borne pathogens in crops reduce the seed germination rate and hamper seedling growth, leading to significant yield loss. Due to the growing concerns about environmental damage and the development of resistance to agrochemicals among pathogen populations, there is a strong demand for eco-friendly alternatives to synthetic chemicals in agriculture. It has been well established during the last few decades that plant seeds harbor diverse microbes, some of which are vertically transmitted and important for plant health and productivity. In this study, we isolated culturable endophytic bacteria and fungi from soybean seeds and evaluated their antagonistic activities against common bacterial and fungal seed-borne pathogens of soybean. A total of 87 bacterial isolates and 66 fungal isolates were obtained. Sequencing of 16S rDNA and internal transcribed spacer amplicon showed that these isolates correspond to 30 and 15 different species of bacteria and fungi, respectively. Our antibacterial and antifungal activity assay showed that four fungal species and nine bacterial species have the potential to suppress the growth of at least one seed-borne pathogen tested in the study. Among them, Pseudomonas koreensis appears to have strong antagonistic activities across all the pathogens. Our collection of soybean seed endophytes would be a valuable resource not only for studying biology and ecology of seed endophytes but also for practical deployment of seed endophytes toward crop protection.

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“…Contrasting work shows greater percentages of C. kikuchii in MG III and IV with late April to early May planting dates (Alloatti et al, 2015). Environmental conditions that favor C. kikuchii are high temperatures and humid conditions (Li et al, 2019).…”

Section: Planting Datementioning

confidence: 97%

Agronomic management of early maturing soybeans in North Carolina

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Vann

Brown

et al. 2021

Crop Forage & Turfgrass Mgmt

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Interest in producing indeterminate, early maturing soybean [Glycine max (L.) Merr.] varieties [maturity group (MG) ≤IV] has increased in the southeastern United States as producers seek ways to increase soybean yields. The objective of this experiment was to generate agronomic management recommendations for early maturing soybean varieties across the southeastern United States and compare these management recommendations to historical recommendations for later-maturing varieties through identification of the optimal seeding rates, row spacing, planting dates, and fertility management. Experiments were conducted across North Carolina at seven environments in 2018 and at four environments in 2019. Two MGs were used in this study: MG III and MG IV. Data on soybean yield and soybean seed quality were collected. Row spacing recommendations were similar to recommendations for later-maturing varieties with narrow rows providing a 7.3 bu acre -1 yield advantage across environments on average, with more pronounced yield advantages in high-yield environments. Seeding rate impacted soybean yield but not seed quality. An economic analysis was conducted for seeding rate, suggesting that 80,000 to 120,000 seeds per acre will optimize both profit and yield across environments with May planting. Planting date sometimes impacted yield and seed quality, suggesting that earlier planting with these varieties could be critical to optimizing soybean yield and seed quality. Fertility applications at R1 (beginning of flowering) did not have an impact on soybean yield or seed quality.

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Evaluation of soybean genotypes for reaction to natural field infection by Cercospora species causing purple seed stain

Cited by 14 publications

References 38 publications

Breeding for disease resistance in soybean: a global perspective

Breeding for disease resistance in soybean: a global perspective

Culturable Endophytes Associated with Soybean Seeds and Their Potential for Suppressing Seed-Borne Pathogens

Agronomic management of early maturing soybeans in North Carolina

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