Article
Agronomy
Kamran Saleem, Mogens Stovring Hovmoller, Rodrigo Labouriau, Annemarie Fejer Justesen, Jihad Orabi, Jeppe Reitan Andersen, Chris Khadgi Sorensen
Summary: We characterized yellow rust resistance in sixteen winter wheat breeding lines using diverse pathogen races and microscopic phenotyping. Our findings showed that different lines exhibited varying levels of resistance against different pathogen races.
Article
Biochemistry & Molecular Biology
Hany H. A. El-Sharkawy, Younes M. Rashad, Nahla T. Elazab
Summary: This study demonstrated that the endophytic fungus Epicoccum nigrum HE20 isolated from a healthy wheat plant showed strong inhibitory potential against stripe rust in wheat. The application of E. nigrum HE20 led to a significant reduction in disease severity and an overexpression of defensive genes in the infected plants. These findings suggest that E. nigrum HE20 could be an effective bioagent for controlling stripe rust.
PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY
(2023)
Article
Plant Sciences
Elena Gultyaeva, Ekaterina Shaydayuk
Summary: The significance of yellow rust caused by Puccinia striiformis (Pst) has increased worldwide, including in Russia. The study aimed to explore the yellow rust resistance potential of modern common winter wheat cultivars included in the Russian Register of Breeding Achievements. The research found that some cultivars had multiple resistance genes, which can enhance genetic diversity and overall yellow rust resistance.
Article
Plant Sciences
Wen Chen, ZeDong Zhang, Xinyao Ma, Gensheng Zhang, Qiang Yao, Zhensheng Kang, Jie Zhao
Summary: The study revealed a close virulence relationship between Puccinia striiformis f. sp. tritici isolates from barberry and wheat, indicating the considerable importance of barberry in providing aeciospores as an inoculum source causing wheat stripe rust epidemics in Qinghai in spring. The genetic ancestry analysis also showed shared ancestry between isolates from barberry and wheat, further supporting the role of barberry in stripe rust epidemics.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Plant Sciences
Gensheng Zhang, Wei Liu, Lin Wang, Xiangrui Cheng, Xiaxia Tian, Zhimin Du, Zhensheng Kang, Jie Zhao
Summary: This study found that Chinese wheat cultivars have varying levels of resistance to the new races TSA-6 and TSA-9. Some cultivars showed resistance to both races. Additionally, certain cultivars exhibited adult plant resistance and slow rusting resistance to these races.
Article
Virology
Yanhui Zhang, Hualong Guo, Siyu Zhou, Daipeng Chen, Gang Xu, Zhensheng Kang, Li Zheng
Summary: We report a new mitovirus, named Puccinia striiformis mitovirus 2 (PsMV2), from the wheat stripe rust fungus. PsMV2 exhibited high multiplication during Pst infection and suppressed programmed cell death triggered by Bax. Silencing of PsMV2 reduced fungal growth and pathogenicity of Pst. Our results indicate that PsMV2 promotes pathogenicity and has a wide distribution in field isolates of Pst.
Article
Plant Sciences
Xiao-Ming Li, Chu-Yang Wang, Yue-Ting Guo, Yu-Xin Guo, Han-Xiao Du, Ke-Xin Niu, Yan Yan, Jin-Ying Gou
Summary: This study investigated the transcriptome response of wheat seedlings to five phytohormones and developed fluorescent reporters to monitor the dynamics of jasmonate.
PLANT CELL AND ENVIRONMENT
(2022)
Article
Agronomy
Fernando Martinez-Moreno, Patricia Giraldo, Cristina Nieto, Magdalena Ruiz
Summary: A study evaluated the resistance of 84 bread wheat Spanish landraces to leaf rust and yellow rust. It was found that resistant landraces mostly originated from the north-west region with higher precipitation and more uniform temperatures.
Article
Plant Sciences
Junyan Feng, Fangjie Yao, Meinan Wang, Deven R. See, Xianming Chen
Summary: Wheat stripe rust, one of the most serious plant diseases worldwide, can be effectively controlled by breeding resistant cultivars. In this study, researchers successfully mapped the YrTr1 gene, an important resistance gene, to the short arm of chromosome 1B in wheat, and named it Yr85.
Article
Biochemistry & Molecular Biology
Jinping Wei, Xiaodong Wang, Zeyu Hu, Xiaojie Wang, Jialiu Wang, Jianfeng Wang, Xueling Huang, Zhensheng Kang, Chunlei Tang
Summary: The obligate biotrophic fungus Puccinia striiformis f. sp. tritici (Pst) employs the effector Hasp98 to inhibit wheat's immune responses and promote the infection of P. striiformis. Hasp98 interacts with the wheat protein TaMAPK4, inhibiting its kinase activity and interfering with the MAPK signaling pathway. This study provides insights into how Pst effectors regulate host defense responses and promote stripe rust disease.
JOURNAL OF INTEGRATIVE PLANT BIOLOGY
(2023)
Article
Plant Sciences
Meng Ju, Wei Liu, Lin Wang, Mudi Sun, Zhensheng Kang, Jie Zhao
Summary: The study showed that wheat stripe rust strains found in Jiangsu and Zhejiang were shared with oversummering regions, overwintering regions, and Yun-Gui epidemiological regions. Different strains were found in Jiangsu and Zhejiang in the JZER region, with genotypic analysis revealing significant gene flow between the two regions.
Article
Multidisciplinary Sciences
Gerald Blasch, Tadesse Anberbir, Tamirat Negash, Lidiya Tilahun, Fikrte Yirga Belayineh, Yoseph Alemayehu, Girma Mamo, David P. Hodson, Francelino A. Rodrigues
Summary: High-resolution satellite and unmanned aerial vehicle (UAV) imagery can be used to develop new crop disease detection methods and early warning systems. In this study, UAV and satellite imagery were used to monitor six bread wheat varieties with different resistances to rust diseases. Spectral features showed strong predictive power for detecting wheat rust diseases and estimating varieties' response to disease stress and grain yield.
SCIENTIFIC REPORTS
(2023)
Article
Plant Sciences
Younes M. Rashad, Hany H. El-Sharkawy, Sara A. Abdalla, Omar M. Ibrahim, Nahla T. Elazab
Summary: This study investigated the time-course changes in expression of polyphenol biosynthesis pathway genes in wheat against stripe rust. The defense mechanisms triggered by mycorrhizal colonization and/or spraying with Streptomyces viridosporus HH1 were also investigated. Results showed that the dual treatment led to significant overexpression of 10 out of the 13 studied genes. Gene co-expression network analysis revealed the central role of HQT in wheat resistance to stripe rust. Furthermore, the dual treatment resulted in a significant reduction in disease severity.
Article
Agronomy
Mei Deng, Li Long, Yukun Cheng, Fangjie Yao, Fangnian Guan, Yuqi Wang, Hao Li, Zhien Pu, Wei Li, Qiantao Jiang, Yuming Wei, Jian Ma, Houyang Kang, Pengfei Qi, Jirui Wang, Youliang Zheng, Yunfeng Jiang, Guoyue Chen
Summary: In this study, three quantitative trait loci (QTL) associated with adult-plant stripe rust resistance were identified from the Chinese wheat landrace Yibinzhuermai. Among them, QYr.YBZR-6AL and QYr.YBZR-7DS had major effects in different field environments. Furthermore, haplotype analysis revealed that the resistance allele at QYr.YBZR-6AL was present in a small proportion of Chinese wheat landraces.
Article
Agronomy
Bowei Ye, Ravi P. Singh, Chan Yuan, Demei Liu, Mandeep S. Randhawa, Julio Huerta-Espino, Sridhar Bhavani, Evans Lagudah, Caixia Lan
Summary: This study determined the genetic basis of resistance to leaf rust (LR) and stripe rust (YR) in wheat variety Borlaug 100. Multiple resistance genes were found to significantly affect the severity of the diseases, and their additive and interactive effects were observed. The results provide resistance sources for wheat breeding programs.
Article
Agronomy
Hester J. Schalkwyk, Thomas Adams, Antoine Persoons, Willem H. P. Boshoff, Ruth Wanyera, Mogens S. Hovmoller, Cristobal Uauy, Lesley Boyd, Zacharias A. Pretorius, Renee Prins, Diane G. O. Saunders
Summary: Wheat stripe rust caused by the fungal pathogen Puccinia striiformis f. sp. tritici poses a constant threat to wheat production in South Africa. Genomic-based analyses revealed genetic diversity and relationships between South African Pst isolates and isolates from East Africa, Pakistan, the UK, and France. There is a critical need for continuous surveillance to monitor the introduction and transmission of Pst isolates to prevent future rust epidemics.
Article
Plant Sciences
Mercy N. Wamalwa, Ruth Wanyera, Julian Rodriguez-Algaba, Lesley A. Boyd, James Owuoche, Joshua Ogendo, Sridhar Bhavani, Cristobal Uauy, Annemarie F. Justesen, Mogens Hovmoller
Summary: This study investigates the virulence of prevalent wheat stripe rust pathogen strains in the main wheat growing regions of Kenya, finding an increasing virulence in the Kenyan population. Different stripe rust strain groups dominate different wheat growing regions in Kenya, and there may be migration of some strain groups into Kenya from other regions in East Africa.
Article
Agronomy
Dolors Villegas, Radhika Bartaula, Carlos Cantero-Martinez, Douglas Luster, Les Szabo, Pablo Olivera, Anna Berlin, Julian Rodriguez-Algaba, Mogens S. Hovmoller, Robert McIntosh, Yue Jin
Summary: This study investigates the functionality of indigenous Berberis species as alternate hosts for stem rust caused by Puccinia graminis and finds that they play an active role in the sexual cycle of the pathogen under natural conditions in Spain.
Article
Cell Biology
Nikolaj Meisner Vendelbo, Khalid Mahmood, Pernille Sarup, Mogens S. Hovmoller, Annemarie Fejer Justesen, Peter Skov Kristensen, Jihad Orabi, Ahmed Jahoor
Summary: Leaf rust is a significant foliar disease in rye, and in this study, we identified two genomic regions associated with resistance and a potential resistance gene, Pr6, which may be an ortholog of the wheat leaf rust resistance gene Lr1 in rye.
Editorial Material
Plant Sciences
M. A. Fernandez-Gamarra, P. Chavez, L. Cardozo Tellez, R. Scholz, N. Bobadilla, M. J. Vargas, L. N. Talavera Stefani, G. A. Enciso-Maldonado, T. Thach, M. S. Hovmoller, M. M. Kohli
Article
Plant Sciences
Mehran Patpour, Mogens S. Hovmoller, Julian Rodriguez-Algaba, Biagio Randazzo, Dolors Villegas, Vladimir P. Shamanin, Anna Berlin, Kerstin Flath, Pawel Czembor, Alena Hanzalova, Svetlana Slikova, Ekaterina S. Skolotneva, Yue Jin, Les Szabo, Kevin J. G. Meyer, Romain Valade, Tine Thach, Jens G. Hansen, Annemarie F. Justesen
Summary: This study investigated the re-emergence of a previously important crop pathogen, wheat stem rust, in Europe. The pathogen has been insignificant in Europe for more than 60 years, but since 2016, it has caused epidemics in certain areas in southern Europe, as well as Central- and West Europe. The study revealed the prevalence of different genotypes/races of the pathogen, indicating clonal reproduction and mutation. It also highlighted the susceptibility of European wheat varieties and the potential role of alternate hosts in the epidemiology of wheat stem rust.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Cell Biology
Nikolaj M. Vendelbo, Khalid Mahmood, Burkhard Steuernagel, Brande B. H. Wulff, Pernille Sarup, Mogens S. Hovmoller, Annemarie Fejer Justesen, Peter S. Kristensen, Jihad Orabi, Ahmed Jahoor
Summary: We identified 55 resistant inbred lines out of 92 from the Gulzow germplasm, and discovered five resistance-associated QTLs through genome-wide association study. Candidate resistance genes related to Puccinia recondita were also identified through sequencing and trait-genotype correlation analysis.
Article
Agronomy
Kamran Saleem, Mogens Stovring Hovmoller, Rodrigo Labouriau, Annemarie Fejer Justesen, Jihad Orabi, Jeppe Reitan Andersen, Chris Khadgi Sorensen
Summary: We characterized yellow rust resistance in sixteen winter wheat breeding lines using diverse pathogen races and microscopic phenotyping. Our findings showed that different lines exhibited varying levels of resistance against different pathogen races.
Review
Microbiology
Mogens S. Hovmoller, Tine Thach, Annemarie F. Justesen
Summary: Long-distance dispersal of plant pathogens, whether through airborne transmission or human travel and trade, can have significant implications on plant health, especially when it leads to the spread of disease to new territories. Recent surveillance efforts on cereal rust fungi have shown that new strains entering established disease areas can also have similar effects. Critical mitigation efforts include coordinated pathogen surveillance, host crop diversification, and breeding for disease resistance.
CURRENT OPINION IN MICROBIOLOGY
(2023)
Article
Plant Sciences
Wided Abdedayem, Mehran Patpour, Marwa Laribi, Annemarie F. Justesen, Hajer Kouki, Moez Fakhfakh, Mogens S. Hovmoller, Amor H. Yahyaoui, Sonia Hamza, Sarrah Ben M'Barek
Summary: Climate changes in the past 25 years have contributed to the re-emergence of wheat stem rust disease caused by Puccinia graminis f.sp. tritici (Pgt) in East Africa, Europe, and the Mediterranean basin. This study investigated Pgt occurrence in major wheat growing areas in Tunisia, revealing the predominance of three races. The low disease incidence and population diversity suggest that the fungus was likely introduced from other regions, and climate factors may have facilitated its establishment.
Article
Plant Sciences
Amy Mackenzie, Michael Norman, Mesfin Gessese, Chunhong Chen, Chris Sorensen, Mogens Hovmoller, Lina Ma, Kerrie Forrest, Lee Hickey, Harbans Bariana, Urmil Bansal, Sambasivam Periyannan
Summary: This study identified the stripe rust resistance gene YR63 from a Portuguese hexaploid wheat landrace, which shows resistance to a wide spectrum of Pst races. The closely linked SNP marker associated with YR63 will facilitate its introgression into elite wheat cultivars through marker-assisted selection. The study highlights the importance of using long-read sequencing techniques for accurate detection of resistance genes within large gene clusters.
