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Elias RB, Moura M, Roxo G, Borges Silva L, Pavão DC, Resendes R, Pereira F, Nickrent D. Arceuthobium Species (Viscaceae) Parasitizing an Angiosperm: The Unique Case of A. azoricum in the Azores Islands. PLANT DISEASE 2024; 108:2291-2296. [PMID: 38506906 DOI: 10.1094/pdis-09-23-1909-sc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
Arceuthobium azoricum Wiens & Hawksw. is a rare Azorean endemic epiphytic hemiparasite (mistletoe), which typically parasitizes branches of the gymnosperm Juniperus brevifolia (Hochst. ex Seub.) Antoine (Cupressaceae), which is also an Azorean endemic. Here, we describe a population of A. azoricum, on Pico Island, parasitizing Erica azorica Hochst. ex Seub. (Ericaceae), which is also an Azorean endemic. Our molecular analysis (using nuclear ribosomal internal transcribed spacer) showed no differences between individuals parasitizing Erica and Juniperus species. Moreover, a preliminary analysis showed no differences in morphological characteristics between accessions sampled from different hosts. Given that this is the first bona fide record of Arceuthobium sp. parasitizing an angiosperm, this population represents a unique host-shifting event, and its conservation is important because it may allow new insights into host recognition mechanisms in mistletoes. Immediate attention should be given to characterizing this Pico Island population using appropriate molecular methods and additional morphological analyses.
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Affiliation(s)
- Rui Bento Elias
- Azorean Biodiversity Group and CE3C - Center for Ecology, Evolution and Environmental Changes and CHANGE - Global Change and Sustainability Institute, Universidade dos Açores - Faculdade de Ciências Agrárias e do Ambiente, 9700-042 Angra do Heroísmo, Açores, Portugal
| | - Mónica Moura
- Research Centre in Biodiversity and Genetic Resources (CIBIO), InBIO Associate Laboratory, BIOPOLIS Program in Genomics, Biodiversity and Land Planning; UNESCO Chair - Land Within Sea: Biodiversity and Sustainability in Atlantic Islands and Universidade dos Açores, Faculdade de Ciências e Tecnologia, 9500-321 Ponta Delgada, Portugal
| | - Guilherme Roxo
- Research Centre in Biodiversity and Genetic Resources (CIBIO), InBIO Associate Laboratory, BIOPOLIS Program in Genomics, Biodiversity and Land Planning; UNESCO Chair - Land Within Sea: Biodiversity and Sustainability in Atlantic Islands and Universidade dos Açores, Faculdade de Ciências e Tecnologia, 9500-321 Ponta Delgada, Portugal
| | - Lurdes Borges Silva
- Research Centre in Biodiversity and Genetic Resources (CIBIO), InBIO Associate Laboratory, BIOPOLIS Program in Genomics, Biodiversity and Land Planning; UNESCO Chair - Land Within Sea: Biodiversity and Sustainability in Atlantic Islands and Universidade dos Açores, Faculdade de Ciências e Tecnologia, 9500-321 Ponta Delgada, Portugal
| | - Diogo Cláudio Pavão
- Research Centre in Biodiversity and Genetic Resources (CIBIO), InBIO Associate Laboratory, BIOPOLIS Program in Genomics, Biodiversity and Land Planning; UNESCO Chair - Land Within Sea: Biodiversity and Sustainability in Atlantic Islands and Universidade dos Açores, Faculdade de Ciências e Tecnologia, 9500-321 Ponta Delgada, Portugal
| | - Roberto Resendes
- Research Centre in Biodiversity and Genetic Resources (CIBIO), InBIO Associate Laboratory, BIOPOLIS Program in Genomics, Biodiversity and Land Planning; UNESCO Chair - Land Within Sea: Biodiversity and Sustainability in Atlantic Islands and Universidade dos Açores, Faculdade de Ciências e Tecnologia, 9500-321 Ponta Delgada, Portugal
| | - Fernando Pereira
- Azorean Biodiversity Group and CE3C - Center for Ecology, Evolution and Environmental Changes and CHANGE - Global Change and Sustainability Institute, Universidade dos Açores - Faculdade de Ciências Agrárias e do Ambiente, 9700-042 Angra do Heroísmo, Açores, Portugal
| | - Daniel Nickrent
- Plant Biology Section, School of Integrative Plant Science, College of Agriculture and Life Science, Cornell University, Ithaca, NY 14853, U.S.A
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Ibarra-Laclette E, Venancio-Rodríguez CA, Vásquez-Aguilar AA, Alonso-Sánchez AG, Pérez-Torres CA, Villafán E, Ramírez-Barahona S, Galicia S, Sosa V, Rebollar EA, Lara C, González-Rodríguez A, Díaz-Fleisher F, Ornelas JF. Transcriptional Basis for Haustorium Formation and Host Establishment in Hemiparasitic Psittacanthus schiedeanus Mistletoes. Front Genet 2022; 13:929490. [PMID: 35769994 PMCID: PMC9235361 DOI: 10.3389/fgene.2022.929490] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 05/20/2022] [Indexed: 11/13/2022] Open
Abstract
The mistletoe Psittacanthus schiedeanus, a keystone species in interaction networks between plants, pollinators, and seed dispersers, infects a wide range of native and non-native tree species of commercial interest. Here, using RNA-seq methodology we assembled the whole circularized quadripartite structure of P. schiedeanus chloroplast genome and described changes in the gene expression of the nuclear genomes across time of experimentally inoculated seeds. Of the 140,467 assembled and annotated uniGenes, 2,000 were identified as differentially expressed (DEGs) and were classified in six distinct clusters according to their expression profiles. DEGs were also classified in enriched functional categories related to synthesis, signaling, homoeostasis, and response to auxin and jasmonic acid. Since many orthologs are involved in lateral or adventitious root formation in other plant species, we propose that in P. schiedeanus (and perhaps in other rootless mistletoe species), these genes participate in haustorium formation by complex regulatory networks here described. Lastly, and according to the structural similarities of P. schiedeanus enzymes with those that are involved in host cell wall degradation in fungi, we suggest that a similar enzymatic arsenal is secreted extracellularly and used by mistletoes species to easily parasitize and break through tissues of the host.
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Affiliation(s)
- Enrique Ibarra-Laclette
- Instituto de Ecología A.C. (INECOL), Red de Estudios Moleculares Avanzados (REMAv), Xalapa, Mexico
| | | | | | | | - Claudia-Anahí Pérez-Torres
- Instituto de Ecología A.C. (INECOL), Red de Estudios Moleculares Avanzados (REMAv), Xalapa, Mexico
- Investigador por Mexico-CONACyT en el Instituto de Ecología A.C. (INECOL), Xalapa, Mexico
| | - Emanuel Villafán
- Instituto de Ecología A.C. (INECOL), Red de Estudios Moleculares Avanzados (REMAv), Xalapa, Mexico
| | - Santiago Ramírez-Barahona
- Departamento de Botánica, Instituto de Biología, Universidad Nacional Autónoma de Mexico (UNAM), Ciudad de Mexico, Mexico
| | - Sonia Galicia
- Instituto de Ecología A.C. (INECOL), Red de Biología Evolutiva, Xalapa, Mexico
| | - Victoria Sosa
- Instituto de Ecología A.C. (INECOL), Red de Biología Evolutiva, Xalapa, Mexico
| | - Eria A. Rebollar
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de Mexico, Cuernavaca, Mexico
| | - Carlos Lara
- Centro de Investigación en Ciencias Biológicas, Universidad Autónoma de Tlaxcala, Tlaxcala, Mexico
| | - Antonio González-Rodríguez
- Laboratorio de Genética de la Conservación, Instituto de Investigaciones en Ecosistemas y Sustentabilidad (IIES), UNAM, Morelia, Mexico
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