Assessing Genetic Variation in Resistance to Pinewood Nematode (Bursaphelenchus xylophilus) in Pinus radiata D. Don Half-Sib Families

Full understanding and control of pine wilt disease (PWD) is a work in progress and breeding for disease resistance constitutes an essential management strategy for reducing its impact, as evidenced by advanced breeding programs in countries such as Japan. Since Pinus radiata is o...

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Autores principales:	María Menéndez-Gutiérrez, Margarita Alonso, Raquel Díaz
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	heritability tree breeding disease resistance pine wilt disease genotype by environment interaction genetic gain Plant ecology QK900-989
Acceso en línea:	https://doaj.org/article/f19f4a14468049f5b56a42429958f4a2
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spelling	oai:doaj.org-article:f19f4a14468049f5b56a42429958f4a22021-11-25T17:37:40ZAssessing Genetic Variation in Resistance to Pinewood Nematode (<i>Bursaphelenchus xylophilus</i>) in <i>Pinus radiata</i> D. Don Half-Sib Families10.3390/f121114741999-4907https://doaj.org/article/f19f4a14468049f5b56a42429958f4a22021-10-01T00:00:00Zhttps://www.mdpi.com/1999-4907/12/11/1474https://doaj.org/toc/1999-4907Full understanding and control of pine wilt disease (PWD) is a work in progress and breeding for disease resistance constitutes an essential management strategy for reducing its impact, as evidenced by advanced breeding programs in countries such as Japan. Since <i>Pinus radiata</i> is one of the most commercially relevant species in northern Spain, we designed a study to assess genetic variation in susceptibility to this pathogen using 44 <i>P. radiata</i> half-sib families from the Galician breeding program. Three <i>Bursaphelenchus xylophilus</i> (pinewood nematode, PWN) inoculation experiments were performed to evaluate disease-related variables, estimate genetic parameters, and study sources of genotype by environment interaction (G × E). We also looked at differences in the constitutive chemical compounds of susceptible and non-susceptible individuals. The results showed great variation in PWN susceptibility, with survival rates for <i>P. radiata</i> families ranging from 0% to 90%. In addition, heritability estimates (h<sub>i</sub><sup>2</sup> = 0.43, h<sub>f</sub><sup>2</sup> = 0.72) and genetic gain (>26% selecting 50% of the families) were both moderately high for survival. Significant differences in several constitutive chemical compounds were found between susceptible and non-susceptible seedlings in the two susceptibility groups considered. These results confirm the potential of breeding to obtain <i>P. radiata</i> genotypes that are resistant to pine wilt disease and open possibilities for mitigating its future impact on <i>P. radiata</i> stands.María Menéndez-GutiérrezMargarita AlonsoRaquel DíazMDPI AGarticleheritabilitytree breedingdisease resistancepine wilt diseasegenotype by environment interactiongenetic gainPlant ecologyQK900-989ENForests, Vol 12, Iss 1474, p 1474 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	heritability tree breeding disease resistance pine wilt disease genotype by environment interaction genetic gain Plant ecology QK900-989
spellingShingle	heritability tree breeding disease resistance pine wilt disease genotype by environment interaction genetic gain Plant ecology QK900-989 María Menéndez-Gutiérrez Margarita Alonso Raquel Díaz Assessing Genetic Variation in Resistance to Pinewood Nematode (<i>Bursaphelenchus xylophilus</i>) in <i>Pinus radiata</i> D. Don Half-Sib Families
description	Full understanding and control of pine wilt disease (PWD) is a work in progress and breeding for disease resistance constitutes an essential management strategy for reducing its impact, as evidenced by advanced breeding programs in countries such as Japan. Since <i>Pinus radiata</i> is one of the most commercially relevant species in northern Spain, we designed a study to assess genetic variation in susceptibility to this pathogen using 44 <i>P. radiata</i> half-sib families from the Galician breeding program. Three <i>Bursaphelenchus xylophilus</i> (pinewood nematode, PWN) inoculation experiments were performed to evaluate disease-related variables, estimate genetic parameters, and study sources of genotype by environment interaction (G × E). We also looked at differences in the constitutive chemical compounds of susceptible and non-susceptible individuals. The results showed great variation in PWN susceptibility, with survival rates for <i>P. radiata</i> families ranging from 0% to 90%. In addition, heritability estimates (h<sub>i</sub><sup>2</sup> = 0.43, h<sub>f</sub><sup>2</sup> = 0.72) and genetic gain (>26% selecting 50% of the families) were both moderately high for survival. Significant differences in several constitutive chemical compounds were found between susceptible and non-susceptible seedlings in the two susceptibility groups considered. These results confirm the potential of breeding to obtain <i>P. radiata</i> genotypes that are resistant to pine wilt disease and open possibilities for mitigating its future impact on <i>P. radiata</i> stands.
format	article
author	María Menéndez-Gutiérrez Margarita Alonso Raquel Díaz
author_facet	María Menéndez-Gutiérrez Margarita Alonso Raquel Díaz
author_sort	María Menéndez-Gutiérrez
title	Assessing Genetic Variation in Resistance to Pinewood Nematode (<i>Bursaphelenchus xylophilus</i>) in <i>Pinus radiata</i> D. Don Half-Sib Families
title_short	Assessing Genetic Variation in Resistance to Pinewood Nematode (<i>Bursaphelenchus xylophilus</i>) in <i>Pinus radiata</i> D. Don Half-Sib Families
title_full	Assessing Genetic Variation in Resistance to Pinewood Nematode (<i>Bursaphelenchus xylophilus</i>) in <i>Pinus radiata</i> D. Don Half-Sib Families
title_fullStr	Assessing Genetic Variation in Resistance to Pinewood Nematode (<i>Bursaphelenchus xylophilus</i>) in <i>Pinus radiata</i> D. Don Half-Sib Families
title_full_unstemmed	Assessing Genetic Variation in Resistance to Pinewood Nematode (<i>Bursaphelenchus xylophilus</i>) in <i>Pinus radiata</i> D. Don Half-Sib Families
title_sort	assessing genetic variation in resistance to pinewood nematode (<i>bursaphelenchus xylophilus</i>) in <i>pinus radiata</i> d. don half-sib families
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/f19f4a14468049f5b56a42429958f4a2
work_keys_str_mv	AT mariamenendezgutierrez assessinggeneticvariationinresistancetopinewoodnematodeibursaphelenchusxylophilusiinipinusradiataiddonhalfsibfamilies AT margaritaalonso assessinggeneticvariationinresistancetopinewoodnematodeibursaphelenchusxylophilusiinipinusradiataiddonhalfsibfamilies AT raqueldiaz assessinggeneticvariationinresistancetopinewoodnematodeibursaphelenchusxylophilusiinipinusradiataiddonhalfsibfamilies
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Assessing Genetic Variation in Resistance to Pinewood Nematode (<i>Bursaphelenchus xylophilus</i>) in <i>Pinus radiata</i> D. Don Half-Sib Families

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