Siberian Federal University

Issue

Journal of Siberian Federal University. Biology. 2018 11 (1)

Authors

Pavlov, Igor N.; Litovka, Yuliya A.; Ryazanova, Tatyana V.; Chuprova, Nelli A.; Litvinova, Ekaterina A.; Putintseva, Yuliya A.; Kües, Ursula; Krutovsky, Konstantin V.

Contact information

Pavlov, Igor N.: V.N. Sukachev Institute of Forest FRC «Krasnoyarsk Sceince Center of the SB RAS» 50/28 Akademgorodok, Krasnoyarsk, 660036, Russi;bSiberian Federal University 79 Svobodny, Krasnoyarsk, 660041, Russia; Litovka, Yuliya A.: V.N. Sukachev Institute of Forest FRC «Krasnoyarsk Sceince Center of the SB RAS» 50/28 Akademgorodok, Krasnoyarsk, 660036, Russia; Reshetnev Siberian State University of Science and Technology 31 Krasnoyarsky Rabochy, Krasnoyarsk, 660037, Russia; Ryazanova, Tatyana V.: Reshetnev Siberian State University of Science and Technology 31 Krasnoyarsky Rabochy, Krasnoyarsk, 660037, Russia; Chuprova, Nelli A.: Reshetnev Siberian State University of Science and Technology 31 Krasnoyarsky Rabochy, Krasnoyarsk, 660037, Russia; Litvinova, Ekaterina A.: Reshetnev Siberian State University of Science and Technology 31 Krasnoyarsky Rabochy, Krasnoyarsk, 660037, Russia; Putintseva, Yuliya A.: Siberian Federal University 79 Svobodny, Krasnoyarsk, 660041, Russia; Kües, Ursula: Georg-August-University of Göttingen 2 Büsgenweg, D-37073, Göttingen, Germany; Krutovsky, Konstantin V.: Siberian Federal University 79 Svobodny, Krasnoyarsk, 660041, Russia; Georg-August-University of Göttingen 2 Büsgenweg, D-37073, Göttingen, Germany; Texas A&M University College Station TX 77843, USA; N.I. Vavilov Institute of General Genetics RAS 3 Gubkina Str., Moscow, 119991, Russia;

Keywords

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; ITS; nLSU; Porodaedalea niemelaei; rpb2; tef1

Abstract

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

Pages

30-48

Paper at repository of SibFU

https://elib.sfu-kras.ru/handle/2311/70290

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).