A New Phomopsis Species from Soybean

Hobbs, Thomas; Schmitthenner, A. F.; Kuter, Geoffrey A.

doi:10.2307/3793352

Cited by 62 publications

(67 citation statements)

References 2 publications

(2 reference statements)

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“…In contrast, isolates from the second group never formed perithecia. These isolates differed from Lehman's description of P. sojae, and from the isolates in the first group, in the shape of the pycnidial locule, the morphology of the conidiomata, the size and shape of the stromata, and in the conidiophore morphology (Hobbs et al, 1985). Hobbs et al (1985) pointed out that isolates similar to the second group might have been observed in the past, but were probably reported as D. phaseolorum var.…”

Section: Discovery and Description Of Phomopsis Longicollacontrasting

confidence: 38%

“…P. longicolla differs from others in the Diaporthe -Phomopsis complex in its morphology. It also does not have a known teleomorph (Hobbs et al, 1985). Although other Diaporthe and Phomopsis spp.…”

Section: The Causal Agentsmentioning

confidence: 99%

“…In addition, isolates in the second group were distinct from P. glycines and P. phaseoli Petch, the other Phomopsis species described from soybean. Based on the mophological differences and the pathological and ecological notes in reported studies (Kmetz et al, 1974;, Hobbs et al (1985) proposed that isolates similar to those in the first group retained the name of Phomopsis sojae, while isolates from the other group was described as a new species, Phomopsis longicolla. The description of P. longicolla by Hobbs et al (1985) is as follows: "Phomopsis longicolla Hobbs, sp.…”

Section: Discovery and Description Of Phomopsis Longicollamentioning

confidence: 99%

“…Based on the mophological differences and the pathological and ecological notes in reported studies (Kmetz et al, 1974;, Hobbs et al (1985) proposed that isolates similar to those in the first group retained the name of Phomopsis sojae, while isolates from the other group was described as a new species, Phomopsis longicolla. The description of P. longicolla by Hobbs et al (1985) is as follows: "Phomopsis longicolla Hobbs, sp. Nov. Colonies on potato dextrose agar floccose, dense, white with occasional greenish-yellow areas; reverse colorless with large black stromata.…”

Section: Discovery and Description Of Phomopsis Longicollamentioning

confidence: 99%

“…Phomopsis longicolla was first identified in 1985 (Hobbs et al, 1985). The majority of isolates used in that study were obtained as mycelial cultures from soybean seed, pod, and stem tissues collected from various locations in several states in the U. S. Hobbs et al (1985) found that isolates used in their study could be divided into two groups based on colony appearance on potato dextrose agar (acidified to pH 4.5 with 85% lactic acid) after being incubated under intermittent fluorescent light with a photoperiod of 12 hours daily for 2 weeks.…”

Section: Discovery and Description Of Phomopsis Longicollamentioning

confidence: 99%

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Phomopsis Seed Decay of Soybean

Li¹

2011

Soybean - Molecular Aspects of Breeding

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Section: Discovery and Description Of Phomopsis Longicollacontrasting

confidence: 38%

Section: The Causal Agentsmentioning

confidence: 99%

Section: Discovery and Description Of Phomopsis Longicollamentioning

confidence: 99%

Section: Discovery and Description Of Phomopsis Longicollamentioning

confidence: 99%

Section: Discovery and Description Of Phomopsis Longicollamentioning

confidence: 99%

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Phomopsis Seed Decay of Soybean

Li¹

2011

Soybean - Molecular Aspects of Breeding

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Identification of fungi associated with soybeans and effective seed disinfection treatments

Escamilla

Rosso

Zhang

2019

Food Science & Nutrition

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Sprouts can be a vehicle for the transmission of several pathogens capable of causing human illness, and the potential source of contamination is seed used for sprouting. The limited information about seed‐borne pathogens as well as their incidence on soybean seeds for soybean sprout industry led the objectives of this study that were to identify seed‐borne pathogens on commercial sprout soybean seeds and to evaluate different decontamination treatments on disinfection effectiveness and sprout quality. Seeds of “MFS‐561,” a sprout soybean cultivar, from three production regions were used in this study. The internal transcribed spacer (ITS1 and ITS2) DNA sequences of the isolated fungi from MFS‐561 seeds were used for species identification. Seven disinfection treatments were evaluated on their effectiveness on reducing fungal incidence and impact on sprout characteristics. Out of 55 fungal isolates obtained from the soybean seeds, seven species and six genera were identified. The most frequent genera across regions were Alternaria, Diaphorte, and Fusarium. The treatment of soaking seeds in 2% calcium hypochlorite for 10 min and 5% acetic acid for 2 min before sprouting were promising seed disinfection treatments as they significantly reduced fungi incidence without any negative effects on sprout quality.

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Developing soybean varieties with genetic resistance toPhomopsis spp.

Minor

Brown²,

Zimmerman

1995

J Americ Oil Chem Soc

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Phomopsis iongicolla Hobbs and P. sojae Lehman are the principal causal organisms of Phomopsis seed decay. This disease can reduce germination and quality of soybean. Production of mycotoxins by Phomopsis spp. has been reported. No commercial cultivars are resistant to Phomopsis seed decay. However, the plant introduction PI-417479 is a source of genetic resistance. When grown under field conditions favorable for infection by Phomopsis spp., PI-417479 was free of seed infection in two tests and had 3% infection in another. In the same environments, the cultivar "Williams 82" had 25 to 59% infection. Inheritance of the trait was determined to provide information for efficient transfer of the resistance to improved cuitivars. Crosses were made between PI-417479 and two susceptible genotypes. Five generations were developed for each cross and tested at two locations. Plots were artificially inoculated to enhance infection. Seeds from plants that showed various degrees of infection in the first season were progenytested. Environment strongly influenced disease incidence, but results indicated that resistance to Phomopsis seed decay is controlled by two complementary dominant nuclear genes. Information developed in these studies will facilitate development of resistant cultivars.]AOCS 72, 1431-1434 (1995).

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A New Phomopsis Species from Soybean

Cited by 62 publications

References 2 publications

Phomopsis Seed Decay of Soybean

Phomopsis Seed Decay of Soybean

Identification of fungi associated with soybeans and effective seed disinfection treatments

Developing soybean varieties with genetic resistance toPhomopsis spp.

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