First Report of Heterodera glycines on Soybean in South Dakota

This report indicates that Brassica carinata is a host for Macrophomina phaseolina and if susceptible crops (such as soybean and corn) are planted following B. carinata, presence of inoculum combined with drought conditions can favor charcoal rot development and cause yield loss. Accepted for publication 31 August 2015. Published 10 September 2015

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First Report of Charcoal Rot of Sunflower in Minnesota, USA

Plant Health Progress ◽

10.1094/php-2010-0707-02-br ◽

2010 ◽

Vol 11 (1) ◽

pp. 48

Author(s):

T. Gulya ◽

A. Mengistu ◽

K. Kinzer ◽

N. Balbyshev ◽

S. Markell

Keyword(s):

United States ◽

South Dakota ◽

Great Plains ◽

Northern Great Plains ◽

Charcoal Rot ◽

Midwestern United States ◽

First Report ◽

High Incidence ◽

Sunflower Crop ◽

North And South

Charcoal rot was first observed on sunflower in North and South Dakota in 1998, and was widespread on soybeans recently in Iowa, suggesting that Macrophomina may becoming more common in cooler growing areas of Midwestern United States. With the multitude of Macrophomina hosts in the northern Great Plains and the high incidence of microsclerotia we detected in soil, high disease potential may exist, suggesting that in drier, hotter years the sunflower crop may be affected by this disease. Accepted for publication 17 May 2010. Published 7 July 2010.

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First Report of Alternaria Black Spot caused by Alternaria alternata on Brassica carinata in South Dakota

Plant Disease ◽

10.1094/pdis-02-17-0222-pdn ◽

2017 ◽

Vol 101 (11) ◽

pp. 1951-1951 ◽

Cited By ~ 1

Author(s):

M. Dunbar ◽

A. Adhikari ◽

B. Kontz ◽

A. Varenhorst ◽

T. Nleya ◽

...

Keyword(s):

South Dakota ◽

Alternaria Alternata ◽

Black Spot ◽

Brassica Carinata ◽

First Report

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First report of golden crayfish Faxonius luteus (Creaser, 1933) in South Dakota

BioInvasions Records ◽

10.3391/bir.2021.10.1.16 ◽

2021 ◽

Vol 10 (1) ◽

pp. 149-157

Author(s):

Gene Galinat ◽

Mael Glon ◽

Brian Dickerson

Keyword(s):

South Dakota ◽

First Report

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First Report of Soybean Cyst Nematode (Heterodera glycines) on Soybean in North Dakota

Plant Disease ◽

10.1094/pdis.2004.88.11.1287a ◽

2004 ◽

Vol 88 (11) ◽

pp. 1287-1287 ◽

Cited By ~ 14

Author(s):

C. A. Bradley ◽

C. R. Biller ◽

B. D. Nelson

Keyword(s):

North Dakota ◽

Soybean Cyst Nematode ◽

Heterodera Glycines ◽

Plant Introduction ◽

Cyst Nematode ◽

Diagnostic Laboratory ◽

First Report ◽

Second Stage ◽

The North ◽

Pi 88788

During August 2003, soybean (Glycine max) plants from Richland County, North Dakota with white-to-yellow, lemon-shaped structures on the roots were brought to the North Dakota State University Plant Diagnostic Laboratory. To confirm that the structures were females of a cyst nematode, they were crushed and observed microscopically to determine if nematode eggs and second-stage juveniles were present. Morphology of the second-stage juveniles was consistent with Heterodera glycines, the soybean cyst nematode (SCN). A survey was conducted in soybean fields in 34 km2 around the field in which the samples originated. Ten of twenty fields surveyed had visible females on the roots of plants. Symptoms observed in those fields included patches of stunted, chlorotic, and dead plants. Soil samples were collected from selected areas within eight fields, eggs were extracted using standard soil sieving techniques, and egg numbers were determined. Egg numbers ranged from 550 to 20,000 eggs per 100 cm3 of soil. SCN collected from two different fields, designated as Dwight and LaMars, were used to determine their HG Type. Standardized procedures (1) were used in a growth chamber set at 27°C with 16-h days. Pots in the test were organized in a completely randomized design with three replicates; the test was repeated over time. After 30 days, females were extracted from roots and counted, and a female index (FI) was calculated for each indicator line (1). The mean number of females on susceptible standard cv. Lee 74, was 110. The Dwight SCN population had an FI of 5.3 on plant introduction (PI) 88788, 1.5 on PI 209332, 5.8 on PI 548316 (Cloud), and 0 on all other indicator lines. The LaMars population had an FI of 1.0 on PI 88788, 3.1 on PI 548316 (Cloud), and 0 on all other indicator lines. These results indicate that both SCN populations tested are HG Type 0. To our knowledge, this is the first report of SCN on soybean in North Dakota. Because other hosts of SCN, as well as soybean, are economically important in North Dakota, such as dry edible bean (Phaseolus vulgaris) and dry pea (Pisum sativum), this disease could adversely impact several commodities throughout the state. Reference: (1) T. L. Niblack et al. J. Nematol. 34:279, 2002.

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First Report of the Soybean Cyst Nematode, Heterodera glycines, on Soybean in Zhejiang, Eastern China

Plant Disease ◽

10.1094/pdis-93-3-0319b ◽

2009 ◽

Vol 93 (3) ◽

pp. 319-319 ◽

Cited By ~ 4

Author(s):

J. Zheng ◽

Y. Zhang ◽

X. Li ◽

L. Zhao ◽

S. Chen

Keyword(s):

Soybean Cyst Nematode ◽

Heterodera Glycines ◽

Eastern China ◽

Mainland China ◽

Its Region ◽

Cyst Nematode ◽

Northeastern China ◽

First Report ◽

Soybean Plants ◽

Two Populations

The soybean cyst nematode (SCN), Heterodera glycines Ichinohe, is a destructive pest of soybean. Damage to soybean by SCN was first reported from northeastern China in 1899 (1). SCN has been documented in Anhui, Beijing, Hebei, Heilongjiang, Henan, Jiangsu, Jilin, Liaoning, Neimenggu, Shaanxi, Shandong, and Shanxi provinces in mainland China (1). These provinces are situated in the Heilongjiang and Songhuajing valleys in northeastern China and the eastern region of the Yangtze and Yellow rivers in northern China and have cold to temperate climates. In June of 2008, cyst-forming nematodes were detected in two soybean-growing areas of Hangzhou and Xiaoshan in Zhejiang Province, in subtropical eastern China. The soybean plants at the Hangzhou site showed symptoms of stunting and chlorosis, whereas no aboveground or root symptoms were observed on soybean plants at the Xiaoshan site, except for the presence of SCN females on the roots. The two populations had the same morphological and molecular characters. The cysts were lemon shaped with posterior protuberance, ambifenestrate, underbridge and bullae strongly developed, and lateral field of second-stage juveniles consisted of four incisures. The key morphometrics of cysts were fenestra length (41 to 52 μm) and width (33 to 48 μm), vulval silt (47 to 55 μm), and underbridge length (79 to 94 μm), all of which were coincident with that of SCN (2). Amplification of rDNA-internal transcribed spacer (ITS) region using primers TW81 (5′-GTT TCC GTA GGT GAA CCT GC-3′) and AB28 (5′-ATA TGC TTA AGT TCA GCG GGT-3′) yielded a PCR fragment of approximately 1,030 bp. The digestion patterns of the PCR fragments of the ITS region with AluI, AvaI, CfoI, MvaI, and RsaI showed identical restriction profiles to H. glycines (3), and the sequences exhibited 100% similarity with those of H. glycines isolates, Accession No. AY667456 from GenBank. Morphological and molecular identification confirmed that the two populations of cyst-forming nematodes from Zhejiang are SCN. To our knowledge, this is the first report of SCN in Zhejiang, now the most southern location in mainland China with confirmed infestation of SCN. References: (1) Z. X. Liu et al. Int. J. Nematol. 7:18, 1997. (2) R. H. Mulvey. Can. J. Zool. 50:1277, 1972. (3) J. Zheng et al. Russ. J. Nematol. 8:109, 2000.

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