Phylogenetic Relationships, Pathogenic Traits, and Wood-Destroying Properties of Porodaedalea niemelaei M. Fischer Isolated in the Northern Forest Limit of Larix gmelinii Open Woodlands in the Permafrost Area

Перевод названия: Патогенные и дереворазрушающие свойства Porodaedalea niemelaei M. Fischer в редколесьях Larixgmelinii в районах вечной мерзлоты

Тип публикации: статья из журнала

Год издания: 2018

Идентификатор DOI: 10.17516/1997-1389-0039

Ключевые слова: butt and stem rot, genome sequence, Its, Lignocellulosic complex, molecular genetic markers, nLSU, phylogenetics, Porodaedalea niemelaei, Rpb2, Tef1, wood destroying psychrophilic phytopathogenic fungi, White-rot, Wood biodegradation, белая гниль, биодеструкция древесины, дереворазрушающие психрофильные фитопатогенные грибы, лигноцеллюлозный комплекс, молекулярно-генетические маркеры, корневая и стволовая гниль

Аннотация: The phytopathogenic and wood destroying traits were studied in a basidiomycete fungus, Porodaedalea niemelaei M. Fischer, widespread in Siberian permafrost woodlands of Gmelinii larch, Larix gmelinii (Rupr.) Rupr. Numerous stands of dying out and fallen larch trees with white-rot („corrosion rot“) were found in the study area. Butt rot incidence varied from 63 to 100 % depending on the stand age and raised up to 0.5-1.5 m above root collar on average or up to 9 m maximum. Root rot was also widespread, including larch undergrowth. The biodiversity of xylotrophic fungi was low, with a pronounced dominance of P. niemelaei. The main factors of dying out of L. gmelinii were infection by P. niemelaei promoted by mechanical damage of roots by reindeers during migration and climate anomalies. The cultures isolated from the fruiting bodies were identified as Porodaedalea niemelaei M. Fischer based on the combination of morphological, culture, and molecular genetic methods. Under laboratory conditions, the strains were characterized as psychrotolerant (temperature limit from 6 to 22 °C) and preferred cultural media based mostly on natural and plant substrates. The most active biodegradation occurred on the broadleaf wood substrates causing up to 50 % of the biomass loss accompanied by active decomposing of the lignocellulosic complex and increasing the amount of water-soluble substances. The phylogenetic analysis demonstrated that P. niemelaei is clearly different from other well-studied Porodaedalea species, such as P. chrysoloma, P. pini, and P. cancriformans, and is very close to a group of unclassified fungi isolated in Norway and Finland. The phylogenetic analysis included 43 isolates and was based on four genetic markers - ITS, nLSU, rpb2, and tef1, commonly used in fungal phylogenetics.

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Издание

Журнал: Журнал Сибирского федерального университета. Серия: Биология

Выпуск журнала: Т. 11, 1

Номера страниц: 30-48

ISSN журнала: 19971389

Место издания: Красноярск

Издатель: Федеральное государственное автономное образовательное учреждение высшего образования Сибирский федеральный университет

Авторы

  • Pavlov Igor N. (Siberian Federal University)
  • Litovka Yuliya A. (Reshetnev Siberian State University of Science and Technology)
  • Ryazanova Tatyana V. (Reshetnev Siberian State University of Science and Technology)
  • Chuprova Nelli A. (Reshetnev Siberian State University of Science and Technology)
  • Litvinova Ekaterina A. (Reshetnev Siberian State University of Science and Technology)
  • Putintseva Yuliya A. (Siberian Federal University)
  • Kües Ursula (Georg-August University of Gottingen)
  • Krutovsky Konstantin V. (N.I. Vavilov Institute of General Genetics RAS)

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