Identification of a Novel Alternaria alternata Strain Able to Hyperparasitize Puccinia striiformis f. sp. tritici, the Causal Agent of Wheat Stripe Rust

@article{Zheng2017IdentificationOA,
  title={Identification of a Novel Alternaria alternata Strain Able to Hyperparasitize Puccinia striiformis f. sp. tritici, the Causal Agent of Wheat Stripe Rust},
  author={Li Zheng and Jie Zhao and Xiaofei Liang and Gangming Zhan and Shuchang Jiang and Zhensheng Kang},
  journal={Frontiers in Microbiology},
  year={2017},
  volume={8}
}
The obligate bitrophic fungus Puccinia striiformis f. sp. tritici (Pst) causes stripe (yellow) rust on wheat worldwide. Here, we report a novel fungal strain able to hyperparasitize Pst. The strain was isolated from gray-colored rust pustules, and was identified as Alternaria alternata (Fr.: Fr.) keissler based on a combination of morphological characteristics and multi-locus (ITS, GAPDH, and RPB2) phylogeny. Upon artificial inoculation, the hyperparasite reduced the production and viability of… 

Figures and Tables from this paper

Identification of a Hyperparasitic Simplicillium obclavatum Strain Affecting the Infection Dynamics of Puccinia striiformis f. sp. tritici on Wheat
TLDR
It is demonstrated that inoculation of Pst-infected wheat leaves with S. obclavatum reduced the production and germination rate of PSt urediniospores, and has the potential to be developed into a biological control agent for managing wheat stripe rust.
Isolation, Identification and Hyperparasitism of a Novel Cladosporium cladosporioides Isolate Hyperparasitic to Puccinia striiformis f. sp. tritici, the Wheat Stripe Rust Pathogen
TLDR
The isolation and characterization of isolate of Cladosporium cladosporioides from Pst was reported based on morphological characterization and analysis of molecular markers and has the potential to be developed into a biological control agent for managing wheat stripe rust.
Investigating hyperparasites as potential biological control agents of rust pathogens on cereal crops
TLDR
The results of these experiments suggest that the mechanisms underlying the reduction in pustule number could include one or more of the processes of direct parasitism, antagonism by antibiosis, competition, and/or induction of host plant resistance.
Endophytic fungi in the invasive weed Impatiens glandulifera : a barrier to classical biological control?
TLDR
It is found that endophyte communities within balsam are low in diversity and become more dissimilar with increasing distance between populations, which represents a potential barrier to effective biological control and future weed control strategies need to find strains of rust that can overcome plant genetic resistance and the overlaying phenotypic resistance, conferred by endophytes.
Phylogenetic and enzymatic variability of Alternaria species isolated from various substrates in Qena governorate of Upper Egypt
TLDR
In this work, 27 isolates of Alternaria belonging to section Alternaria were isolated from different sources in Qena governorate, Egypt using multi-locus products of internal transcribed spacer region, small subunit (SSU), large sub unit (LSU) and Alt a1 gene.
Identification and pathogenicity of Fusarium spp. associated with tuber dry rot and wilt of potato in Algeria
TLDR
This is the first study identifying and characterizing potato dry rot and potato wilt pathogens in Algeria and Fusarium sambucinum was the most frequent species (52.6% of isolates) and F. nygamai isolates were the most aggressive in the Potato wilt pathogenicity test.
Transcriptome analysis of apple leaves infected by the rust fungus Gymnosporangium yamadae at two sporulation stages (spermogonia and aecia) reveals specific host responses, rust pathogenesis-related genes and a shift in the phyllosphere fungal community composition
TLDR
Dual RNA-seq analysis was conducted to simultaneously monitor gene expression profiles of G. yamadae and infected apple leaves during the formation of rust spermogonia and aecia and reveals the presence of specific secreted candidate effector proteins expressed during apple infection.
Current Status of the Disease-Resistant Gene(s)/QTLs, and Strategies for Improvement in Brassica juncea
TLDR
The present review focuses on highlighting the resistance sources and quantitative trait loci/gene identified so far from Brassicaceae and non-filial sources against these fungal pathogens of B. juncea.
Chromosome-scale genome assembly of Talaromyces rugulosus strain W13939, a mycoparasitic fungus and promising biocontrol agent.
TLDR
The T. rugulosus genome is rich in genes encoding proteases, carbohydrate-active enzymes, fungal cell wall degrading enzymes, lectin and secondary metabolite biosynthetic enzymes, reflecting its mycoparasitic life style and mycotoxingenic capability.
...
...

References

SHOWING 1-10 OF 76 REFERENCES
A Novel Fungal Hyperparasite of Puccinia striiformis f. sp. tritici, the Causal Agent of Wheat Stripe Rust
TLDR
A novel hyperparasite was reported on Pst that reduced the production and viability of urediniospores and, therefore, could potentially be used for biological control of wheat stripe rust.
Race Dynamics, Diversity, and Virulence Evolution in Puccinia striiformis f. sp. tritici, the Causal Agent of Wheat Stripe Rust in China from 2003 to 2007.
TLDR
The uneven distribution of major races and comparatively greater diversity in the Northwest and Southwest regions than that in the Huang-Huai-Hai region suggest that long-distance migrations of the pathogen occur from one or more over-summering areas eastward into over-wintering areas, supporting the hypothesis that southern Gansu and northwestern Sichuan comprises a "center of origin for virulence".
Pathogenicity to willow rust, Melampsora epitea, of the mycoparasite Sphaerellopsis filum from different sources
TLDR
The results suggest that S. filum is composed of pathogenically specialized populations differing widely in their virulence.
Hyperparasitism of Scytalidium uredinicola on western gall rust, Endocronartium harknessii
TLDR
A destructive hyperparasite of western gall rust,cytalidium uredinicola, that reduces the inoculum potential of the rust and produces abundant arthroconidia among the rust spores to give the infected sori a yellowish-green to whitish-gray appearance is considered promising.
Development of SCAR Markers and an SYBR Green Assay to Detect Puccinia striiformis f. sp. tritici in Infected Wheat Leaves.
TLDR
An SYBR Green RT-PCR method was developed and two pairs of sequence characterized amplified region (SCAR) primers were designed that should be useful for rapid diagnosis and accurate detection of P. tritici in infected wheat leaves for timely control of the disease.
Diversity of Puccinia striiformis on cereals and grasses.
TLDR
This has been the case since 2000, where large-scale epidemics in warmer wheat-growing areas have been ascribed to the emergence of two closely related yellow rust strains with increased aggressiveness and tolerance to warm temperatures.
A PCR-Based Assay for Detection of Puccinia striiformis f. sp. tritici in Wheat.
TLDR
A specific and sensitive polymerase chain reaction (PCR) assay for detecting the pathogen in wheat (Triticum aestivum) leaves was developed and required only 0.1 pg of the target DNA for a detectable and reliable amplification with the PSF and PSR primers.
Epidemiology and control of stripe rust [Puccinia striiformis f. sp. tritici] on wheat
TLDR
Research on plant resistance to disease, including types of resistance, genes, and molecular markers, and on the use of fungicides are summarized, and strategies for more effective control of the disease are discussed.
Evidence for hyperparasitism of coffee rust (Hemileia vastatrix) by the entomogenous fungus, Lecanicillium lecanii, through a complex ecological web
TLDR
A weak but statistically significant effect of hyperparasitic control of coffee rust was observed on two distinct scales and was linked to an indirect effect of the ant‐coccid mutualism, where L. lecanii was a parasite of the coccid.
Emerging Yr26-Virulent Races of Puccinia striiformis f. tritici Are Threatening Wheat Production in the Sichuan Basin, China.
TLDR
The objective of this study was to assess the vulnerability of the wheat cultivars and breeding lines in the Sichuan Basin to Yr26-virulent races, and it was shown that the Yr 26 virulence is a major threat to wheat production in the Hubei Basin and potentially in other regions of China.
...
...