Lignin concentrations in phloem and outer bark are not associated with resistance to mountain pine beetle among high elevation pines.

A key component in understanding plant-insect interactions is the nature of host defenses. Research on defense traits among Pinus species has focused on specialized metabolites and axial resin ducts, but the role of lignin in defense within diverse systems is unclear. We investigated lignin levels i...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	David N Soderberg, Bethany Kyre, Pierluigi Bonello, Barbara J Bentz
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/65bdc0e8a0ab4b31bee5d29105a6ac50
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:65bdc0e8a0ab4b31bee5d29105a6ac50
record_format	dspace
spelling	oai:doaj.org-article:65bdc0e8a0ab4b31bee5d29105a6ac502021-12-02T20:08:04ZLignin concentrations in phloem and outer bark are not associated with resistance to mountain pine beetle among high elevation pines.1932-620310.1371/journal.pone.0250395https://doaj.org/article/65bdc0e8a0ab4b31bee5d29105a6ac502021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0250395https://doaj.org/toc/1932-6203A key component in understanding plant-insect interactions is the nature of host defenses. Research on defense traits among Pinus species has focused on specialized metabolites and axial resin ducts, but the role of lignin in defense within diverse systems is unclear. We investigated lignin levels in the outer bark and phloem of P. longaeva, P. balfouriana, and P. flexilis; tree species growing at high elevations in the western United States known to differ in susceptibility to mountain pine beetle (Dendroctonus ponderosae; MPB). Pinus longaeva and P. balfouriana are attacked by MPB less frequently than P. flexilis, and MPB brood production in P. longaeva is limited. Because greater lignification of feeding tissues has been shown to provide defense against bark beetles in related genera, such as Picea, we hypothesized that P. longaeva and P. balfouriana would have greater lignin concentrations than P. flexilis. Contrary to expectations, we found that the more MPB-susceptible P. flexilis had greater phloem lignin levels than the less susceptible P. longaeva and P. balfouriana. No differences in outer bark lignin levels among the species were found. We conclude that lignification in Pinus phloem and outer bark is likely not adaptive as a physical defense against MPB.David N SoderbergBethany KyrePierluigi BonelloBarbara J BentzPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 9, p e0250395 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q David N Soderberg Bethany Kyre Pierluigi Bonello Barbara J Bentz Lignin concentrations in phloem and outer bark are not associated with resistance to mountain pine beetle among high elevation pines.
description	A key component in understanding plant-insect interactions is the nature of host defenses. Research on defense traits among Pinus species has focused on specialized metabolites and axial resin ducts, but the role of lignin in defense within diverse systems is unclear. We investigated lignin levels in the outer bark and phloem of P. longaeva, P. balfouriana, and P. flexilis; tree species growing at high elevations in the western United States known to differ in susceptibility to mountain pine beetle (Dendroctonus ponderosae; MPB). Pinus longaeva and P. balfouriana are attacked by MPB less frequently than P. flexilis, and MPB brood production in P. longaeva is limited. Because greater lignification of feeding tissues has been shown to provide defense against bark beetles in related genera, such as Picea, we hypothesized that P. longaeva and P. balfouriana would have greater lignin concentrations than P. flexilis. Contrary to expectations, we found that the more MPB-susceptible P. flexilis had greater phloem lignin levels than the less susceptible P. longaeva and P. balfouriana. No differences in outer bark lignin levels among the species were found. We conclude that lignification in Pinus phloem and outer bark is likely not adaptive as a physical defense against MPB.
format	article
author	David N Soderberg Bethany Kyre Pierluigi Bonello Barbara J Bentz
author_facet	David N Soderberg Bethany Kyre Pierluigi Bonello Barbara J Bentz
author_sort	David N Soderberg
title	Lignin concentrations in phloem and outer bark are not associated with resistance to mountain pine beetle among high elevation pines.
title_short	Lignin concentrations in phloem and outer bark are not associated with resistance to mountain pine beetle among high elevation pines.
title_full	Lignin concentrations in phloem and outer bark are not associated with resistance to mountain pine beetle among high elevation pines.
title_fullStr	Lignin concentrations in phloem and outer bark are not associated with resistance to mountain pine beetle among high elevation pines.
title_full_unstemmed	Lignin concentrations in phloem and outer bark are not associated with resistance to mountain pine beetle among high elevation pines.
title_sort	lignin concentrations in phloem and outer bark are not associated with resistance to mountain pine beetle among high elevation pines.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/65bdc0e8a0ab4b31bee5d29105a6ac50
work_keys_str_mv	AT davidnsoderberg ligninconcentrationsinphloemandouterbarkarenotassociatedwithresistancetomountainpinebeetleamonghighelevationpines AT bethanykyre ligninconcentrationsinphloemandouterbarkarenotassociatedwithresistancetomountainpinebeetleamonghighelevationpines AT pierluigibonello ligninconcentrationsinphloemandouterbarkarenotassociatedwithresistancetomountainpinebeetleamonghighelevationpines AT barbarajbentz ligninconcentrationsinphloemandouterbarkarenotassociatedwithresistancetomountainpinebeetleamonghighelevationpines
_version_	1718375244567150592

Lignin concentrations in phloem and outer bark are not associated with resistance to mountain pine beetle among high elevation pines.

Ejemplares similares