کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5739606 1412104 2017 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Phylogenetic species recognition and hybridisation in Lasiodiplodia: A case study on species from baobabs
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم کشاورزی و بیولوژیک (عمومی)
پیش نمایش صفحه اول مقاله
Phylogenetic species recognition and hybridisation in Lasiodiplodia: A case study on species from baobabs
چکیده انگلیسی


- Hybridisation is occurring frequently in Lasiodiplodia.
- Lasiodiplodia brasiliense, Lasiodiplodia laeliocattleyae, Lasiodiplodia missouriana, and Lasiodiplodia viticola are hybrids.
- Ten Lasiodiplodia species were identified from baobab trees in Africa.

Lasiodiplodia species (Botryosphaeriaceae, Ascomycota) infect a wide range of typically woody plants on which they are associated with many different disease symptoms. In this study, we determined the identity of Lasiodiplodia isolates obtained from baobab (Adansonia species) trees in Africa and reviewed the molecular markers used to describe Lasiodiplodia species. Publicly available and newly produced sequence data for some of the type strains of Lasiodiplodia species showed incongruence amongst phylogenies of five nuclear loci. We conclude that several of the previously described Lasiodiplodia species are hybrids of other species. Isolates from baobab trees in Africa included nine species of Lasiodiplodia and two hybrid species. Inoculation trials with the most common Lasiodiplodia species collected from these trees produced significant lesions on young baobab trees. There was also variation in aggressiveness amongst isolates from the same species. The apparently widespread tendency of Lasiodiplodia species to hybridise demands that phylogenies from multiple loci (more than two and preferably four or more) are compared for congruence prior to new species being described. This will avoid hybrids being incorrectly described as new taxa, as has clearly occurred in the past.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fungal Biology - Volume 121, Issue 4, April 2017, Pages 420-436
نویسندگان
, , , ,