Characterization of Alternaria species associated with leaf blight of sunflower in China

Wang, Taiyun; Zhao, Juan; Sun, Peng; Wu, Xuehong

doi:10.1007/s10658-014-0464-z

Cited by 20 publications

(9 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In recent years, A. tenuissima has become an important pathogen, causing foliar disease in various crops throughout China (Wang et al, 2014; Zheng et al, 2015; Zhao et al, 2016a,b). A comprehensive understanding of the population genetics of A. tenuissima has been lacking.…”

Section: Discussionmentioning

confidence: 99%

“…Alternaria tenuissima is an important global pathogen on a large variety of economically important crops, including broad bean, tomato, sunflower, potato, watermelon, and muskmelon (Rahman et al, 2002; Agamy et al, 2013; Wang et al, 2014; Zheng et al, 2015; Zhao et al, 2016a,b). The pathogen affects the above-ground parts of the crops, and is the causal agent of early blight, stem canker, and some fruit rots (Abdelfattah et al, 2016; Bessadat et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…In fact, sporadic epidemic transmission is the main factor responsible for the high frequency of occurrence of this disease (Agamy et al, 2013; Meng et al, 2015). The increasing frequency of A. tenuissima outbreaks has affected the distribution of Alternaria species responsible for causing foliar diseases (Wang et al, 2014; Zheng et al, 2015; Zhao et al, 2016a,b). The extent of genetic variation and spatial distribution in A. tenuissima associated with tomato foliar diseases in China, however, remains largely unknown.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Population Genetics of Alternaria tenuissima in Four Regions of China as Determined by Microsatellite Markers Obtained by Transcriptome Sequencing

Yang

Chen

et al. 2018

Front. Microbiol.

Self Cite

View full text Add to dashboard Cite

A total of 32,284 unigenes were obtained from the transcriptome of Alternaria tenuissima, a pathogenic fungus causing foliar disease in tomato, using next-generation sequencing (NGS) technology. In total, 24,670 unigenes were annotated using five databases, including NCBI non-redundant protein, Swiss-Prot, euKaryotic Orthologous Groups, Kyoto Encyclopedia of Genes and Genomes, and the Gene Ontology. A total of 1,140 simple sequence repeats were also identified for use as molecular markers. Sixteen of the simple sequence repeat loci were selected to study the population structure of A. tenuissima. A population genetic analysis of 191 A. tenuissima isolates, sampled from four geographic regions in China, indicated that A. tenuissima had a high level of genetic diversity, and that the selected simple sequence repeat markers could reliably capture the genetic variation. The null hypothesis of random mating was rejected for all four geographic regions in China. Isolation by distance was observed for the entire data set, but not within clusters, which is indicative of barriers to gene flow among geographic regions. The analyses of Bayesian and principal coordinates, however, did not separate four geographic regions into four separate genetic clusters. The different levels of historical migration rates suggest that isolation by distance did not represent a major biological obstacle to the spread of A. tenuissima. The potential epidemic spread of A. tenuissima in China may occur through the transport of plant products or other factors. The presented results provide a basis for a comprehensive understanding of the population genetics of A. tenuissima in China.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Population Genetics of Alternaria tenuissima in Four Regions of China as Determined by Microsatellite Markers Obtained by Transcriptome Sequencing

Yang

Chen

et al. 2018

Front. Microbiol.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Eight Alternaria species (A. alternata, A. tenuissima, A. dumosa, A. arborescens, A. infectoria, A. grandis, A. interrupra, and A. solani) have been reported that cause potato (Solanum tuberosum) foliar disease, resulting in significant yield losses in potato farming globally [11]. Nine species of Alternaria (A. helianthi, A. alternata, A. zinniae, A. tenuissima, A. leucanthemi, A. helianthicola, A. longissima, A. helianthinficiens, and A. protenta) have been reported that infect sunflower (Helianthus annuus), causing leaf spot diseases [12]. Alternaria catharanthicola associated with A. venetum was reported in China in the recent past [7].…”

Section: Introductionmentioning

confidence: 99%

Luobuma Leaf Spot Disease Caused by Alternaria tenuissima in China

Lan,

Yan,

Duan

2023

JoF

View full text Add to dashboard Cite

Luobuma (Apocynum venetum and Poacynum hendersonni) is widely cultivated for environmental conservation, medicinal purposes and the textile industry. In 2018, a severe leaf spot disease that attacked the leaves of Luobuma was observed in plants cultivated in Yuzhong County, Gansu Province, China. Symptoms of the disease appeared as white or off-white spots surrounded by brown margins on the leaves of A. venetum. The spots expanded and covered a large area of the leaf, presenting as “cankers” with progression of the disease, leading to leaf death. The initial symptoms of the disease on P. hendersonni were similar to the symptoms of A. venetum, with a larger disease spot than A. venetum, and the spot was black and thicker. The aim of this study was to identify the fungal species and evaluate the effectiveness of fungicides (hymexazol and zhongshengmycin) against the pathogen in vitro. The fungi species that caused the new disease was identified as Alternaria tenuissima based on the morphological characteristics, pathogenicity tests, and phylogenetic analysis of the internal transcribed spacer (ITS) region, glyceraldehyde 3-phosphate dehydrogenase (gpd), translation elongation factor 1-alpha (TEF) and the histone 3 (H3) gene sequences. The findings showed that hymexazol fungicide can be used to control leaf spot disease. This is the first report on Luobuma leaf spot disease caused by A. tenuissima in China.

show abstract

“…Within the diseases, leaf spot or blight caused by Alternaria helianthi (Hansf.) Tubaki & Nishihara is a serious and potentially destructive one causing premature defoliation favored by higher relative humidity and warm temperature (Prathuangwong et al 1991;Wang et al, 2014). The damages are due to the formation of leaf spots, reduction of plant photosynthetic area and early defoliation (Leite et al, 2006;Alves et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Effect of TNAU-Pf1 seed biopriming and foliar spray of newer fungicides on the incidence of leaf blight of sunflower

Rajendran

Gopalakrishnan

Selvakumar

et al. 2017

Journal of Biological Control

View full text Add to dashboard Cite

Seed biopriming followed by foliar spray of different newer fungicide molecules to manage sunflower leaf spot under field conditions have been tried in Coimbatore, Tamil Nadu, India for three consecutive years (2014)(2015)(2016). The result indicated that among the different treatments tested, seed biopriming with TNAU Pseudomonas fluorescens (Pf1) @ 10g/kg seeds followed by spray of Hexaconazole @ 0.1% at 45 days and P. fluorescens (Pf1) @ 1.0% at 60 DAS showed less severity of Alternaria leaf spot (25.7) with the highest yield of 1471kg/ha against the control (47.7) which recorded yield of 1111kg/ha. In addition, seed biopriming promoted higher and uniform seed germination under field conditions.

show abstract

Characterization of Alternaria species associated with leaf blight of sunflower in China

Cited by 20 publications

References 18 publications

The Population Genetics of Alternaria tenuissima in Four Regions of China as Determined by Microsatellite Markers Obtained by Transcriptome Sequencing

The Population Genetics of Alternaria tenuissima in Four Regions of China as Determined by Microsatellite Markers Obtained by Transcriptome Sequencing

Luobuma Leaf Spot Disease Caused by Alternaria tenuissima in China

Effect of TNAU-Pf1 seed biopriming and foliar spray of newer fungicides on the incidence of leaf blight of sunflower

Contact Info

Product

Resources

About