keyword
https://read.qxmd.com/read/38496565/repeated-loss-of-function-at-hd-mating-type-genes-and-of-recombination-suppression-without-mating-type-locus-linkage-in-anther-smut-fungi
#1
Elise A Lucotte, Paul Jay, Quentin Rougemont, Lorelei Boyer, Amandine Ac Cornille, Alodie Snirc, Amandine Labat, Elisabeth Chahine, Marine Duhamel, Jacob Gendelman, Roxanne Kaaren Hayes, Michael H Perlin, Michael Hood, Ricardo C Rodriguez de la Vega, Tatiana Giraud
A wide diversity of mating systems occur in nature, with frequent evolutionary transitions in mating-compatibility mechanisms. Basidiomycete fungi typically have two mating-type loci controlling mating compatibility, HD and PR, usually residing on different chromosomes. In Microbotryum anther-smut fungi, there have been repeated events of linkage between the two mating-type loci through chromosome fusions, leading to large non-recombining regions. By generating high-quality genome assemblies, we found that two sister Microbotryum species parasitizing Dianthus plants, M...
March 4, 2024: bioRxiv
https://read.qxmd.com/read/38125956/quantitative-disease-resistance-in-wild-silene-vulgaris-to-its-endemic-pathogen-microbotryum-silenes-inflatae
#2
JOURNAL ARTICLE
Michael E Hood, Sydney Nelson, Jae-Hoon Cho, Michelle Launi, Janis Antonovics, Emily L Bruns
The evolution of disease resistances is an expected feature of plant-pathogen systems, but whether the genetics of this trait most often produces qualitative or quantitative phenotypic variation is a significant gap in our understanding of natural populations. These two forms of resistance variation are often associated with differences in number of underlying loci, the specificities of host-pathogen coevolution, as well as contrasting mechanisms of preventing or slowing the infection process. Anther-smut disease is a commonly studied model for disease of wild species, where infection has severe fitness impacts, and prior studies have suggested resistance variation in several host species...
December 2023: Ecology and Evolution
https://read.qxmd.com/read/37709766/dynamics-of-transposable-element-accumulation-in-the-non-recombining-regions-of-mating-type-chromosomes-in-anther-smut-fungi
#3
JOURNAL ARTICLE
Marine Duhamel, Michael E Hood, Ricardo C Rodríguez de la Vega, Tatiana Giraud
In the absence of recombination, the number of transposable elements (TEs) increases due to less efficient selection, but the dynamics of such TE accumulations are not well characterized. Leveraging a dataset of 21 independent events of recombination cessation of different ages in mating-type chromosomes of Microbotryum fungi, we show that TEs rapidly accumulated in regions lacking recombination, but that TE content reached a plateau at ca. 50% of occupied base pairs by 1.5 million years following recombination suppression...
September 14, 2023: Nature Communications
https://read.qxmd.com/read/36576452/host-density-shapes-the-relative-contribution-of-vector-based-and-aerial-transmission-of-a-pathogenic-fungus
#4
JOURNAL ARTICLE
Janis Antonovics, Caroline R Amoroso, Emily Bruns, Michael Hood
Pathogen transmission mode is a key determinant of epidemiological outcomes. Theory shows that host density can influence the spread of pathogens differentially depending on their mode of transmission. Host density could therefore play an important role in selecting for pathogen transmission mode. We test theoretical expectations using floral arrays of the alpine carnation Dianthus pavonius in field experiments of spore dispersal of the anther-smut fungus, Microbotryum, by vector (pollinator)-based floral transmission and passive aerial transmission at a range of host densities...
December 28, 2022: Ecology
https://read.qxmd.com/read/36250132/can-disease-resistance-evolve-independently-at-different-ages-genetic-variation-in-age-dependent-resistance-to-disease-in-three-wild-plant-species
#5
JOURNAL ARTICLE
Emily B Bruns, Michael E Hood, Janis Antonovics, Indigo H Ballister, Sarah E Troy, Jae-Hoon Cho
Juveniles are typically less resistant (more susceptible) to infectious disease than adults, and this difference in susceptibility can help fuel the spread of pathogens in age-structured populations. However, evolutionary explanations for this variation in resistance across age remain to be tested.One hypothesis is that natural selection has optimized resistance to peak at ages where disease exposure is greatest. A central assumption of this hypothesis is that hosts have the capacity to evolve resistance independently at different ages...
September 2022: Journal of Ecology
https://read.qxmd.com/read/35325190/tempo-of-degeneration-across-independently-evolved-non-recombining-regions
#6
JOURNAL ARTICLE
Fantin Carpentier, Ricardo C Rodríguez de la Vega, Paul Jay, Marine Duhamel, Jacqui A Shykoff, Michael H Perlin, R Margaret Wallen, Michael E Hood, Tatiana Giraud
Recombination is beneficial over the long term, allowing more effective selection. Despite long-term advantages of recombination, local recombination suppression can evolve and lead to genomic degeneration, in particular on sex chromosomes. Here, we investigated the tempo of degeneration in non-recombining regions, i.e., the function curve for the accumulation of deleterious mutations over time, leveraging on 22 independent events of recombination suppression identified on mating-type chromosomes of anther-smut fungi, including newly identified ones...
March 24, 2022: Molecular Biology and Evolution
https://read.qxmd.com/read/34899100/fungal-diversity-notes-1387-1511-taxonomic-and-phylogenetic-contributions-on-genera-and-species-of-fungal-taxa
#7
JOURNAL ARTICLE
Saranyaphat Boonmee, Dhanushka N Wanasinghe, Mark S Calabon, Naruemon Huanraluek, Sajini K U Chandrasiri, Gareth E B Jones, Walter Rossi, Marco Leonardi, Sanjay K Singh, Shiwali Rana, Paras N Singh, Deepak K Maurya, Ajay C Lagashetti, Deepika Choudhary, Yu-Cheng Dai, Chang-Lin Zhao, Yan-Hong Mu, Hai-Sheng Yuan, Shuang-Hui He, Rungtiwa Phookamsak, Hong-Bo Jiang, María P Martín, Margarita Dueñas, M Teresa Telleria, Izabela L Kałucka, Andrzej M Jagodziński, Kare Liimatainen, Diana S Pereira, Alan J L Phillips, Nakarin Suwannarach, Jaturong Kumla, Surapong Khuna, Saisamorn Lumyong, Tarynn B Potter, Roger G Shivas, Adam H Sparks, Niloofar Vaghefi, Mohamed A Abdel-Wahab, Faten A Abdel-Aziz, Guo-Jie Li, Wen-Fei Lin, Upendra Singh, Rajendra P Bhatt, Hyang Burm Lee, Thuong T T Nguyen, Paul M Kirk, Arun Kumar Dutta, Krishnendu Acharya, V Venkateswara Sarma, M Niranjan, Kunhiraman C Rajeshkumar, Nikhil Ashtekar, Sneha Lad, Nalin N Wijayawardene, Darbe J Bhat, Rong-Ju Xu, Subodini N Wijesinghe, Hong-Wei Shen, Zong-Long Luo, Jing-Yi Zhang, Phongeun Sysouphanthong, Naritsada Thongklang, Dan-Feng Bao, Janith V S Aluthmuhandiram, Jafar Abdollahzadeh, Alireza Javadi, Francesco Dovana, Muhammad Usman, Abdul Nasir Khalid, Asha J Dissanayake, Anusha Telagathoti, Maraike Probst, Ursula Peintner, Isaac Garrido-Benavent, Lilla Bóna, Zsolt Merényi, Lajos Boros, Bratek Zoltán, J Benjamin Stielow, Ning Jiang, Cheng-Ming Tian, Esmaeil Shams, Farzaneh Dehghanizadeh, Adel Pordel, Mohammad Javan-Nikkhah, Teodor T Denchev, Cvetomir M Denchev, Martin Kemler, Dominik Begerow, Chun-Ying Deng, Emma Harrower, Tohir Bozorov, Tutigul Kholmuradova, Yusufjon Gafforov, Aziz Abdurazakov, Jian-Chu Xu, Peter E Mortimer, Guang-Cong Ren, Rajesh Jeewon, Sajeewa S N Maharachchikumbura, Chayanard Phukhamsakda, Ausana Mapook, Kevin D Hyde
This article is the 13th contribution in the Fungal Diversity Notes series, wherein 125 taxa from four phyla, ten classes, 31 orders, 69 families, 92 genera and three genera incertae sedis are treated, demonstrating worldwide and geographic distribution. Fungal taxa described and illustrated in the present study include three new genera, 69 new species, one new combination, one reference specimen and 51 new records on new hosts and new geographical distributions. Three new genera, Cylindrotorula ( Torulaceae ), Scolecoleotia ( Leotiales genus incertae sedis ) and Xenovaginatispora ( Lindomycetaceae ) are introduced based on distinct phylogenetic lineages and unique morphologies...
2021: Fungal Diversity
https://read.qxmd.com/read/34531834/rna-based-analysis-reveals-high-diversity-of-plant-associated-active-fungi-in-the-atmosphere
#8
JOURNAL ARTICLE
Yan Chen, Xishen Zhu, Ziqiong Hou, Yi Wang, Yunying Zhou, Ling Wang, Lin Liu, Jingrong Duan, Sauban Musa Jibril, Chengyun Li
Fungi are ubiquitous in nature; that is, they are present everywhere on the planet; understanding the active state and functional capacity of airborne microbes associated with health of human, animal, and plant is critical for biosafety management. Here, we firstly and directly proved that there were about 40% active fungi in the air via rRNA amplicon sequencing and imaging flow cytometry simultaneously. Amplicon sequencing analysis showed differences between structures of active and total fungal community; Ascomycota were dominant in the active community, while Basidiomycota have low transcriptional activity across all samples...
2021: Frontiers in Microbiology
https://read.qxmd.com/read/34383291/digest-evolutionary-dynamics-of-specialization-of-a-fungal-pathogen
#9
Ricardo Muñiz Trejo
Pathogen specialization may not always arise due to an adaptive trade-off between infecting one or many species. Bruns et al. (2021) characterized the potential host range of four lineages of the fungal pathogen Microbotryum on three Dianthus species. They found that both generalists and specialists co-occurred in nature and no clear fitness benefit is found for either. They suggested that specialization may be related to the specific geographic distribution of these plants. This article is protected by copyright...
August 12, 2021: Evolution; International Journal of Organic Evolution
https://read.qxmd.com/read/34260867/resistance-correlations-influence-infection-by-foreign-pathogens
#10
JOURNAL ARTICLE
Noah Lerner, Victoria Luizzi, Janis Antonovics, Emily Bruns, Michael E Hood
AbstractReciprocal selection promotes the specificity of host-pathogen associations and resistance polymorphisms in response to disease. However, plants and animals also vary in response to pathogen species not previously encountered in nature, with potential effects on new disease emergence. Using anther smut disease, we show that resistance (measured as infection rates) to foreign pathogens can be correlated with standing variation in resistance to an endemic pathogen. In Silene vulgaris , genetic variation in resistance to its endemic anther smut pathogen correlated positively with resistance variation to an anther smut pathogen from another host, but the relationship was negative between anther smut and a necrotrophic pathogen...
August 2021: American Naturalist
https://read.qxmd.com/read/33983636/from-generalist-to-specialists-variation-in-the-host-range-and-performance-of-anther-smut-pathogens-on-dianthus
#11
JOURNAL ARTICLE
Emily L Bruns, Janis Antonovics, Michael E Hood
Determining the processes that drive the evolution of pathogen host range can inform our understanding of disease dynamics and the potential for host-shifts. In natural populations, patterns of host range could be driven by genetically based differences in pathogen infectivity or ecological differences in host availability. In northwestern Italy, four reproductively isolated lineages of the fungal plant-pathogen Microbotryum have been shown to co-occur on several species in the genus Dianthus. We carried out cross-inoculation experiments to determine whether patterns of realized host range in these four lineages were driven by differences in infectivity and to test whether there was evidence of a trade-off between host range and within-host reproduction...
May 13, 2021: Evolution; International Journal of Organic Evolution
https://read.qxmd.com/read/33540708/how-do-smut-fungi-use-plant-signals-to-spatiotemporally-orientate-on-and-in-planta
#12
REVIEW
Karina van der Linde, Vera Göhre
Smut fungi represent a large group of biotrophic plant pathogens that cause extensive yield loss and are also model organisms for studying plant-pathogen interactions. In recent years, they have become biotechnological tools. After initial penetration of the plant epidermis, smut fungi grow intra-and intercellularly without disrupting the plant-plasma membrane. Following the colonialization step, teliospores are formed and later released. While some smuts only invade the tissues around the initial penetration site, others colonize in multiple plant organs resulting in spore formation distal from the original infection site...
February 2, 2021: Journal of Fungi (Basel, Switzerland)
https://read.qxmd.com/read/33457822/characterization-and-phylogenetic-analysis-of-the-complete-mitochondrial-genome-of-a-basidiomycetous-yeast-cystobasidium-sp-cystobasidiales-cystobasidiaceae
#13
JOURNAL ARTICLE
Qiaofeng Liu, Xin Wang
In the present study, the complete mitochondrial genome of a basidiomycetous yeast Cystobasidium sp. was assembled and obtained. The mitochondrial genome of Cystobasidium sp. contains 16 protein-coding genes, 2 ribosomal RNA genes (rRNA), and 24 transfer RNA (tRNA) genes. The complete mitogenome of Cystobasidium sp. has a total length of 24,914 bp, with the base composition as follows: A (30.82), T (32.88%), C (18.37%) and G (17.93%). The Cystobasidium sp. mitogenome exhibited a close relationship with the mitogenome of Microbotryum cf...
June 16, 2020: Mitochondrial DNA. Part B. Resources
https://read.qxmd.com/read/33190245/vector-preference-and-heterogeneity-in-host-sex-ratio-can-affect-pathogen-spread-in-natural-plant-populations
#14
JOURNAL ARTICLE
Emme Bruns, Laura Pierce, Janis Antonovics, Michael Hood
Vector-borne diseases threaten human and agricultural health and are a critical component of the ecology of plants and animals. While previous studies have shown that pathogen spread can be affected by vector preferences for host infection status, less attention has been paid to vector preference for host sex, despite abundant evidence of sex-specific variation in disease burden. We investigated vector preference for host infection status and sex in the sterilizing 'anther-smut' pathogen (Microbotryum) of the alpine carnation, Dianthus pavonius...
November 15, 2020: Ecology
https://read.qxmd.com/read/32942986/meiotic-recombination-in-the-offspring-of-microbotryum-hybrids-and-its-impact-on-pathogenicity
#15
JOURNAL ARTICLE
Britta Bueker, Marco Alexandre Guerreiro, Michael E Hood, Andreas Brachmann, Sven Rahmann, Dominik Begerow
BACKGROUND: Hybridization is a central mechanism in evolution, producing new species or introducing important genetic variation into existing species. In plant-pathogenic fungi, adaptation and specialization to exploit a host species are key determinants of evolutionary success. Here, we performed experimental crosses between the two pathogenic Microbotryum species, M. lychnidis-dioicae and M. silenes-acaulis that are specialized to different hosts. The resulting offspring were analyzed on phenotypic and genomic levels to describe genomic characteristics of hybrid offspring and genetic factors likely involved in host-specialization...
September 17, 2020: BMC Evolutionary Biology
https://read.qxmd.com/read/32724522/anther-smut-fungi-from-more-contaminated-sites-in-chernobyl-show-lower-infection-ability-and-lower-viability-following-experimental-irradiation
#16
JOURNAL ARTICLE
Sylvie Arnaise, Jacqui A Shykoff, Anders P Møller, Timothy A Mousseau, Tatiana Giraud
The long-term contamination that followed the nuclear disaster at Chernobyl provides a case study for the effects of chronic ionizing radiation on living organisms and on their ability to tolerate or evolve resistance to such radiation. Previously, we studied the fertility and viability of early developmental stages of a castrating plant pathogen, the anther-smut fungus Microbotryum lychnidis-dioicae, isolated from field sites varying over 700-fold in degree of radioactive contamination. Neither the budding rate of haploid spores following meiosis nor the karyotype structure varied with increasing radiation levels at sampling sites...
July 2020: Ecology and Evolution
https://read.qxmd.com/read/32194322/the-smut-fungi-of-greenland
#17
JOURNAL ARTICLE
Teodor T Denchev, Henning Knudsen, Cvetomir M Denchev
The first taxonomic treatment of the smut fungi in Greenland is provided. A total of 43 species in 11 genera are treated and illustrated by photographs of sori, microphotographs of spores in LM and SEM, and distribution maps. Two species, Anthracoidea pseudofoetidae and Urocystis tothii, are recorded as new from North America. Thirteen species, Anthracoidea altera, A. capillaris, A. limosa, A. liroi, A. pseudofoetidae, A. scirpoideae, A. turfosa, Microbotryum lagerheimii, M. stellariae, Schizonella elynae, Stegocintractia luzulae, Urocystis fischeri, and U...
2020: MycoKeys
https://read.qxmd.com/read/32068929/congruent-population-genetic-structures-and-divergence-histories-in-anther-smut-fungi-and-their-host-plants-silene-italica-and-the-s-nutans-species-complex
#18
JOURNAL ARTICLE
Fanny E Hartmann, Alodie Snirc, Amandine Cornille, Cécile Godé, Pascal Touzet, Fabienne Van Rossum, Elisabeth Fournier, Stéphanie Le Prieur, Jacqui Shykoff, Tatiana Giraud
The study of population genetic structure congruence between hosts and pathogens gives important insights into their shared phylogeographic and coevolutionary histories. We studied the population genetic structure of castrating anther-smut fungi (Microbotryum genus) and of their host plants, the Silene nutans species complex, and the morphologically and genetically close S. italica, which can be found in sympatry. Phylogeographic population genetic structure related to persistence in separate glacial refugia has been recently revealed in the S...
February 18, 2020: Molecular Ecology
https://read.qxmd.com/read/32058544/differential-gene-expression-between-fungal-mating-types-is-associated-with-sequence-degeneration
#19
JOURNAL ARTICLE
Wen-Juan Ma, Fantin Carpentier, Tatiana Giraud, Michael Hood
Degenerative mutations in non-recombining regions, such as on sex chromosomes, may lead to differential expression between alleles if mutations occur stochastically in one or the other allele. Reduced allelic expression due to degeneration has indeed been suggested to occur in various sex-chromosome systems. However, whether an association occurs between specific signatures of degeneration and differential expression between alleles has not been extensively tested, and sexual antagonism can also cause differential expression on sex chromosomes...
February 14, 2020: Genome Biology and Evolution
https://read.qxmd.com/read/31690676/cause-and-effectors-whole-genome-comparisons-reveal-shared-but-rapidly-evolving-effector-sets-among-host-specific-plant-castrating-fungi
#20
JOURNAL ARTICLE
William C Beckerson, Ricardo C Rodríguez de la Vega, Fanny E Hartmann, Marine Duhamel, Tatiana Giraud, Michael H Perlin
Plant pathogens utilize a portfolio of secreted effectors to successfully infect and manipulate their hosts. It is, however, still unclear whether changes in secretomes leading to host specialization involve mostly effector gene gains/losses or changes in their sequences. To test these hypotheses, we compared the secretomes of three host-specific castrating anther smut fungi ( Microbotryum ), two being sister species. To address within-species evolution, which might involve coevolution and local adaptation, we compared the secretomes of strains from differentiated populations...
November 5, 2019: MBio
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