Field investigation of topsoil moisture and temperature as drivers for decomposition or germination of sclerotia (
            <i>Sclerotinia sclerotiorum</i>
            ) under winter-killed cover crops

Euteneuer, Pia; Wagentristl, Helmut; Pauer, Stefan; Keimerl, Matthias; Schachinger, C.; Bodner, Gernot; Piepho, Hans‐Peter; Steinkellner, Siegrid

doi:10.1080/09064710.2021.2018034

Cited by 3 publications

(5 citation statements)

References 52 publications

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“…As indicated in the “Materials and Methods” section, experiments were carried out at 28°C. Although the optima temperatures for mycelial growth and sclerotia germination are between 18 and 22°C, the production of sclerotia, which was the main target in this work, is usually induced at slightly higher temperatures, between 24 and 30°C ( Abdullah et al, 2008 ; Euteneuer et al, 2021 ).…”

Section: Discussionmentioning

confidence: 99%

Antifungal Mechanism and Efficacy of Kojic Acid for the Control of Sclerotinia sclerotiorum in Soybean

et al. 2022

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Sclerotinia stem rot, which is caused by the fungal pathogen Sclerotinia sclerotiorum, is a soybean disease that results in enormous economic losses worldwide. The control of S. sclerotiorum is a difficult task due to the pathogen’s wide host range and its persistent structures, called sclerotia. In addition, there is lack of soybean cultivars with medium to high levels of resistance to S. sclerotiorum. In this work, kojic acid (KA), a natural bioactive compound commonly used in cosmetic industry, was evaluated for the management of Sclerotinia stem rot. Interestingly, KA showed strong antifungal activity against S. sclerotiorum by inhibiting chitin and melanin syntheses and, subsequently, sclerotia formation. The antifungal activity of KA was not obviously affected by pH, but was reduced in the presence of metal ions. Treatment with KA reduced the content of virulence factor oxalic acid in S. sclerotiorum secretions. Preventive applications of 50 mM KA (7.1 mg/ml) completely inhibited S. sclerotiorum symptoms in soybean; whereas, in curative applications, the combination of KA with prochloraz and carbendazim improved the efficacy of these commercial fungicides. Taken together, the antifungal activity of KA against S. sclerotiorum was studied for the first time, revealing new insights on the potential application of KA for the control of Sclerotinia stem rot in soybean.

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Section: Discussionmentioning

confidence: 99%

Antifungal Mechanism and Efficacy of Kojic Acid for the Control of Sclerotinia sclerotiorum in Soybean

et al. 2022

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“…A decrease of soil water of 0–90 cm over the summer months by transpiration of cover crops is well known (Bodner et al., 2007) and might have been fully compensated by winter precipitation until April in this study (Euteneuer et al., 2022). Thus, no depletion effect by cover crop treatments on soil water content to a soil depth of 90 cm was found.…”

Section: Discussionmentioning

confidence: 53%

“…How to cite this article: Euteneuer, P., Wagentristl, H., Neugschwandtner, R. W., Pauer, S., Keimerl, M., Piepho, H.-P., & Steinkellner, S. (2022). Cover crops affect soybean yield components, but not grain quality.…”

Section: A C K N O W L E D G M E N T Smentioning

confidence: 99%

“…Cover crops affect soil parameters such as soil moisture, temperature, and soil chemistry (Bodner et al., 2007; Couëdel et al., 2018; Euteneuer et al., 2022), and therefore may have an effect on following soybean growth. Especially in semi‐arid areas, soil water content decreases over the summer months due to transpiration of cover crops, but soil water content can be replenished over winter (Bodner et al., 2007).…”

Section: Introductionmentioning

confidence: 99%

“…Uncertainties about effects of cover crops on subsequent soybean in terms of plant establishment, plant pathogens and in consequence on yield, are possible reasons for a reluctant application of cover crops (Bouma, 2018;Bouma et al, 2011;Crotty & Stoate, 2019). Cover crops affect soil parameters such as soil moisture, temperature, and soil chemistry (Bodner et al, 2007;Couëdel et al, 2018;Euteneuer et al, 2022), and therefore may have an effect on following soybean growth. Especially in semi-arid areas, soil water content decreases over the summer months due to transpiration of cover crops, but soil water content can be replenished over winter (Bodner et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

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Cover crops affect soybean yield components, but not grain quality

et al. 2022

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Cover cropping is mainly used to prevent soil erosion, but the effects of individual cover crops on the subsequent soybean [Glycine max (L.) Merr.] are hardly known.Therefore, two annual field trials with 15 cover crop species and bare fallow as control were conducted in semi-arid East Austria in 2016 and 2017. Cover crops were sown in July in 3-× 10-m plots in a randomized block design with three replicates and were incorporated in mid-April before soybean were seeded. Cover crop biomass differed between plant species and year (2016, 626 ± 390; 2017, 84 ± 86.1 g m −2 ). Aboveground cover crop biomass did not affect soybean establishment, but single cover crop species such as ryegrass (Lolium multiflorum Lam. var. westerwoldicum Wittm.), kidney vetch (Anthyllis vulneraria L.), and corn cockle (Agrostemma githago L.) impeded soybean seeding due to high root densities and prevented germination or fostered outbreak of two-spotted spider mites (Tetranychus urticae Koch). These three cover crops reduced soybean grain yield by 12-84%. Grain yield was a function of grain density m −2 in a three-way interaction with year and cover crop treatment, but not by plant or pod density. Protein, oil, and sucrose content of soybean were unaffected by cover crop treatments. Overall, with the exception of ryegrass, kidney vetch, and corn cockle, cover crops can be grown ahead of soybean without any yield loss and can be used for their versatile ecosystem services.

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Development of Glycine max Germplasm Highly Resistant to Sclerotinia sclerotiorum

Webster

McCaghey²,

Mueller

et al. 2023

PhytoFrontiers™

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Sclerotinia stem rot (SSR) of soybean caused by Sclerotinia sclerotiorum is a devastating disease of soybean, especially in the Upper Midwest region of the United States. To mitigate yield losses due to this disease, many control methods are available for producers including cultural control practices, chemical control, and cultivars with quantitative resistance. However, due to few commercial cultivars with high levels of resistance, producers are often limited in their seed selection. The aim of this study was to develop novel conventional soybean cultivars with high levels of resistance to SSR, favorable agronomic traits, and levels of resistance to additional economically important diseases. Initial crosses were conducted in 2016 with two different sources of SSR resistance. Across multiple generations of screening for resistance to SSR, three highly resistant soybean lines were identified as the elite lines. These elite lines demonstrated to be highly resistant across multiple years in both greenhouse and field trials including high levels of resistance to multiple diverse S. sclerotiorum isolates. The three selected elite lines also resulted in moderately high yields and favorable agronomic traits such as low lodging and moderate branching indicating their viability for being released for production. In addition to SSR resistance, these three elite lines also demonstrated resistance to other economically important soybean diseases such as frogeye leaf spot, anthracnose, Cercospora leaf blight, and brown stem rot. Overall, this work has led to three SSR resistant soybean lines which could be useful for future breeding efforts or commercial soybean production.

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Field investigation of topsoil moisture and temperature as drivers for decomposition or germination of sclerotia ( Sclerotinia sclerotiorum ) under winter-killed cover crops

Cited by 3 publications

References 52 publications

Antifungal Mechanism and Efficacy of Kojic Acid for the Control of Sclerotinia sclerotiorum in Soybean

Antifungal Mechanism and Efficacy of Kojic Acid for the Control of Sclerotinia sclerotiorum in Soybean

Cover crops affect soybean yield components, but not grain quality

Development of Glycine max Germplasm Highly Resistant to Sclerotinia sclerotiorum

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