Effects of Phytophthora Inoculations on Photosynthetic Behaviour and Induced Defence Responses of Plant Volatiles in Field-Grown Hybrid Poplar Tolerant to Bark Canker Disease

Bark cankers accompanied by symptoms of decline and dieback are the result of a destructive disease caused by Phytophthora infections in woody plants. Pathogenicity, gas exchange, chlorophyll a fluorescence, and volatile responses to P. cactorum</i&g...

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Autores principales:	Jaroslav Ďurkovič, Tatiana Bubeníková, Adriána Gužmerová, Peter Fleischer, Daniel Kurjak, Ingrid Čaňová, Ivan Lukáčik, Miloň Dvořák, Ivan Milenković
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	α-cubebene bark canker β-caryophyllene gas exchange germacrene D transpiration Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/141b04aa9e9743d5a12e6df0e80c7ed1
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spelling	oai:doaj.org-article:141b04aa9e9743d5a12e6df0e80c7ed12021-11-25T18:06:16ZEffects of <i>Phytophthora</i> Inoculations on Photosynthetic Behaviour and Induced Defence Responses of Plant Volatiles in Field-Grown Hybrid Poplar Tolerant to Bark Canker Disease10.3390/jof71109692309-608Xhttps://doaj.org/article/141b04aa9e9743d5a12e6df0e80c7ed12021-11-01T00:00:00Zhttps://www.mdpi.com/2309-608X/7/11/969https://doaj.org/toc/2309-608XBark cankers accompanied by symptoms of decline and dieback are the result of a destructive disease caused by <i>Phytophthora</i> infections in woody plants. Pathogenicity, gas exchange, chlorophyll <i>a</i> fluorescence, and volatile responses to <i>P. cactorum</i> and <i>P. plurivora</i> inoculations were studied in field-grown 10-year-old hybrid poplar plants. The most stressful effects of <i>P. cactorum</i> on photosynthetic behaviour were found at days 30 and 38 post-inoculation (p.-i.), whereas major disturbances induced by <i>P. plurivora</i> were identified at day 30 p.-i. and also belatedly at day 52 p.-i. The spectrum of volatile organic compounds emitted at day 98 p.-i. was richer than that at day 9 p.-i, and the emissions of both sesquiterpenes α-cubebene and germacrene D were induced solely by the <i>Phytophthora</i> inoculations. Significant positive relationships were found between both the axial and the tangential development of bark cankers and the emissions of α-cubebene and β-caryophyllene, respectively. These results show that both α-cubebene and germacrene D are signal molecules for the suppression of <i>Phytophthora</i> hyphae spread from necrotic sites of the bark to healthy living tissues. Four years following inoculations, for the majority of the inoculated plants, the callus tissue had already closed over the bark cankers.Jaroslav ĎurkovičTatiana BubeníkováAdriána GužmerováPeter FleischerDaniel KurjakIngrid ČaňováIvan LukáčikMiloň DvořákIvan MilenkovićMDPI AGarticleα-cubebenebark cankerβ-caryophyllenegas exchangegermacrene DtranspirationBiology (General)QH301-705.5ENJournal of Fungi, Vol 7, Iss 969, p 969 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	α-cubebene bark canker β-caryophyllene gas exchange germacrene D transpiration Biology (General) QH301-705.5
spellingShingle	α-cubebene bark canker β-caryophyllene gas exchange germacrene D transpiration Biology (General) QH301-705.5 Jaroslav Ďurkovič Tatiana Bubeníková Adriána Gužmerová Peter Fleischer Daniel Kurjak Ingrid Čaňová Ivan Lukáčik Miloň Dvořák Ivan Milenković Effects of <i>Phytophthora</i> Inoculations on Photosynthetic Behaviour and Induced Defence Responses of Plant Volatiles in Field-Grown Hybrid Poplar Tolerant to Bark Canker Disease
description	Bark cankers accompanied by symptoms of decline and dieback are the result of a destructive disease caused by <i>Phytophthora</i> infections in woody plants. Pathogenicity, gas exchange, chlorophyll <i>a</i> fluorescence, and volatile responses to <i>P. cactorum</i> and <i>P. plurivora</i> inoculations were studied in field-grown 10-year-old hybrid poplar plants. The most stressful effects of <i>P. cactorum</i> on photosynthetic behaviour were found at days 30 and 38 post-inoculation (p.-i.), whereas major disturbances induced by <i>P. plurivora</i> were identified at day 30 p.-i. and also belatedly at day 52 p.-i. The spectrum of volatile organic compounds emitted at day 98 p.-i. was richer than that at day 9 p.-i, and the emissions of both sesquiterpenes α-cubebene and germacrene D were induced solely by the <i>Phytophthora</i> inoculations. Significant positive relationships were found between both the axial and the tangential development of bark cankers and the emissions of α-cubebene and β-caryophyllene, respectively. These results show that both α-cubebene and germacrene D are signal molecules for the suppression of <i>Phytophthora</i> hyphae spread from necrotic sites of the bark to healthy living tissues. Four years following inoculations, for the majority of the inoculated plants, the callus tissue had already closed over the bark cankers.
format	article
author	Jaroslav Ďurkovič Tatiana Bubeníková Adriána Gužmerová Peter Fleischer Daniel Kurjak Ingrid Čaňová Ivan Lukáčik Miloň Dvořák Ivan Milenković
author_facet	Jaroslav Ďurkovič Tatiana Bubeníková Adriána Gužmerová Peter Fleischer Daniel Kurjak Ingrid Čaňová Ivan Lukáčik Miloň Dvořák Ivan Milenković
author_sort	Jaroslav Ďurkovič
title	Effects of <i>Phytophthora</i> Inoculations on Photosynthetic Behaviour and Induced Defence Responses of Plant Volatiles in Field-Grown Hybrid Poplar Tolerant to Bark Canker Disease
title_short	Effects of <i>Phytophthora</i> Inoculations on Photosynthetic Behaviour and Induced Defence Responses of Plant Volatiles in Field-Grown Hybrid Poplar Tolerant to Bark Canker Disease
title_full	Effects of <i>Phytophthora</i> Inoculations on Photosynthetic Behaviour and Induced Defence Responses of Plant Volatiles in Field-Grown Hybrid Poplar Tolerant to Bark Canker Disease
title_fullStr	Effects of <i>Phytophthora</i> Inoculations on Photosynthetic Behaviour and Induced Defence Responses of Plant Volatiles in Field-Grown Hybrid Poplar Tolerant to Bark Canker Disease
title_full_unstemmed	Effects of <i>Phytophthora</i> Inoculations on Photosynthetic Behaviour and Induced Defence Responses of Plant Volatiles in Field-Grown Hybrid Poplar Tolerant to Bark Canker Disease
title_sort	effects of <i>phytophthora</i> inoculations on photosynthetic behaviour and induced defence responses of plant volatiles in field-grown hybrid poplar tolerant to bark canker disease
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/141b04aa9e9743d5a12e6df0e80c7ed1
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Effects of <i>Phytophthora</i> Inoculations on Photosynthetic Behaviour and Induced Defence Responses of Plant Volatiles in Field-Grown Hybrid Poplar Tolerant to Bark Canker Disease

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