First Report of Brussels Sprouts and Broccoli Yellows Caused by <i>Fusarium oxysporum</i> in China

Liu, X.; Fang, Zhiyuan; Yang, Limei; Zhang, Y. Y.; Lv, Honghao

doi:10.1094/pdis-12-17-1970-pdn

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…Macroconidia were slightly curved or straight, usually with three septations, and microconidia were elliptical to cylindrical with no septation ( Supplementary Table S1). Morphologically, these isolates were identical to the previous descriptions of F. oxysporum [27].…”

Section: Morphological Characterizationsupporting

confidence: 84%

Occurrence of Sweetpotato (Ipomoea batatas) Wilt and Surface Rot Disease and Determining Resistance of Selected Varieties to the Pathogen in Korea

Paul

Won

Seung-yong

et al. 2020

Plants

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Fusarium wilt and Fusarium surface rot caused by Fusarium oxysporum Schltdl are the major diseases of sweetpotato (Ipomoea batatas) and was surveyed in different locations (Cheongju, Heanam, Iksan, Icheon, Kimje, Nonsan, Yeoungam, and Yeoju) in Korea from 2015 to 2017 in the field, after harvesting and in storehouse. The wilt incidence in the early stage represented 17.9%, 5.9%, and 8.3% in 2015, 2016, and 2017, respectively. Samples were collected, and the causal organism was isolated on potato dextrose agar (PDA). Ten pure cultures were stored at the Sweetpotato Research Laboratory, Bioenergy Crop Research Institute, Muan, Korea. Morphological analysis, along with molecular phylogeny of the sequences of internal-transcribed spacer (ITS) and elongation factor 1-α (EF-1α) genes and their combined phylogenetic analysis, confirmed the isolates as the Fusarium oxysporum Schltdl. Pathogenicity tests were conducted on sweetpotato stems, and storage roots by artificially inoculation methods, and the most virulent isolate was selected as SPL18019. A rapid screening method on 21 selected varieties for resistant variety selection was applied on stems. The Pungwanmi was found resistant to Fusarium wilt, whereas Annobeni was the most susceptible. On the other hand, six varieties were used to test surface rot resistance, and Yulmi and Yesumi were resistant and susceptible, respectively, to Fusarium surface rot.

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Section: Morphological Characterizationsupporting

confidence: 84%

Occurrence of Sweetpotato (Ipomoea batatas) Wilt and Surface Rot Disease and Determining Resistance of Selected Varieties to the Pathogen in Korea

Paul

Won

Seung-yong

et al. 2020

Plants

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Fusarium oxysporum (basal rot)

2022

CABI Compendium

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A Rapid and Reliable Method for Evaluating Cotton Resistance to Fusarium Wilt Race 4 Based on Taproot Rot at the Seed Germination Stage

Willey

Wheeler²,

Dever³

et al. 2023

Phytopathology®

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Fusarium oxysporum f. sp. vasinfectum race 4 (FOV4) is a soil-borne fungal pathogen threatening US cotton production. The objective of this study was to develop a reliable and efficient method to evaluate cotton for FOV4 resistance based on taproot rot during seed germination through five growth chamber tests and two greenhouse tests. Seeds from eight cotton cultivars (Set 1) were germinated in a paper towel for 6 days, and taproots were inoculated with a FOV4 conidial suspension using three inoculation methods, i.e., taproot dipping, taproot wounding, and paper towel drenching, in addition to seed soaking before germination. Taproot rot-based disease incidence (DI) and disease severity rating (DSR), seed germination percentage (SGP), and plant fresh weight (PFW) were measured 7 days after inoculation. Taproot dipping was the most efficient and reliable evaluation method. SGP and PFW were not significantly correlated with DI and DSR, making them inappropriate to use in resistance evaluation. Pima DP 359 RF and PHY 881 RF were the most resistant with the lowest root rot. The taproot dipping method was repeated in another test and confirmed in two tests using another set of eight cultivars (Set 2). The taproot rot-based DSR at germination was significantly correlated with DSR at the seedling stage in the greenhouse in both sets and with previous results in seedling mortality in the greenhouse and field in Set 2. The results suggest that the response to FOV4 infections at the seed germination stage is overall congruent with that at the seedling stage.

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First Report of Brussels Sprouts and Broccoli Yellows Caused by Fusarium oxysporum in China

Cited by 3 publications

References 5 publications

Occurrence of Sweetpotato (Ipomoea batatas) Wilt and Surface Rot Disease and Determining Resistance of Selected Varieties to the Pathogen in Korea

Occurrence of Sweetpotato (Ipomoea batatas) Wilt and Surface Rot Disease and Determining Resistance of Selected Varieties to the Pathogen in Korea

Fusarium oxysporum (basal rot)

A Rapid and Reliable Method for Evaluating Cotton Resistance to Fusarium Wilt Race 4 Based on Taproot Rot at the Seed Germination Stage

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