Invasive Lactuca serriola seeds contain endophytic bacteria that contribute to drought tolerance

Abstract The mutualistic relationship between alien plant species and microorganisms is proposed to facilitate or hinder invasive success, depending on whether plants can form novel associations with microorganisms in the introduced habitats. However, this hypothesis has not considered seed endophyt...

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Autores principales:	Seorin Jeong, Tae-Min Kim, Byungwook Choi, Yousuk Kim, Eunsuk Kim
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/1292f4a011294a06b4b116c71f4e62ae
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spelling	oai:doaj.org-article:1292f4a011294a06b4b116c71f4e62ae2021-12-02T18:02:49ZInvasive Lactuca serriola seeds contain endophytic bacteria that contribute to drought tolerance10.1038/s41598-021-92706-x2045-2322https://doaj.org/article/1292f4a011294a06b4b116c71f4e62ae2021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-92706-xhttps://doaj.org/toc/2045-2322Abstract The mutualistic relationship between alien plant species and microorganisms is proposed to facilitate or hinder invasive success, depending on whether plants can form novel associations with microorganisms in the introduced habitats. However, this hypothesis has not considered seed endophytes that would move together with plant propagules. Little information is available on the seed endophytic bacteria of invasive species and their effects on plant performance. We isolated the seed endophytic bacteria of a xerophytic invasive plant, Lactuca serriola, and examined their plant growth-promoting traits. In addition, we assessed whether these seed endophytes contributed to plant drought tolerance. Forty-two bacterial species were isolated from seeds, and all of them exhibited at least one plant growth-promoting trait. Kosakonia cowanii occurred in all four tested plant populations and produced a high concentration of exopolysaccharides in media with a highly negative water potential. Notably, applying K. cowanii GG1 to Arabidopsis thaliana stimulated plant growth under drought conditions. It also reduced soil water loss under drought conditions, suggesting bacterial production of exopolysaccharides might contribute to the maintenance of soil water content. These results imply that invasive plants can disperse along with beneficial bacterial symbionts, which potentially improve plant fitness and help to establish alien plant species.Seorin JeongTae-Min KimByungwook ChoiYousuk KimEunsuk KimNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Seorin Jeong Tae-Min Kim Byungwook Choi Yousuk Kim Eunsuk Kim Invasive Lactuca serriola seeds contain endophytic bacteria that contribute to drought tolerance
description	Abstract The mutualistic relationship between alien plant species and microorganisms is proposed to facilitate or hinder invasive success, depending on whether plants can form novel associations with microorganisms in the introduced habitats. However, this hypothesis has not considered seed endophytes that would move together with plant propagules. Little information is available on the seed endophytic bacteria of invasive species and their effects on plant performance. We isolated the seed endophytic bacteria of a xerophytic invasive plant, Lactuca serriola, and examined their plant growth-promoting traits. In addition, we assessed whether these seed endophytes contributed to plant drought tolerance. Forty-two bacterial species were isolated from seeds, and all of them exhibited at least one plant growth-promoting trait. Kosakonia cowanii occurred in all four tested plant populations and produced a high concentration of exopolysaccharides in media with a highly negative water potential. Notably, applying K. cowanii GG1 to Arabidopsis thaliana stimulated plant growth under drought conditions. It also reduced soil water loss under drought conditions, suggesting bacterial production of exopolysaccharides might contribute to the maintenance of soil water content. These results imply that invasive plants can disperse along with beneficial bacterial symbionts, which potentially improve plant fitness and help to establish alien plant species.
format	article
author	Seorin Jeong Tae-Min Kim Byungwook Choi Yousuk Kim Eunsuk Kim
author_facet	Seorin Jeong Tae-Min Kim Byungwook Choi Yousuk Kim Eunsuk Kim
author_sort	Seorin Jeong
title	Invasive Lactuca serriola seeds contain endophytic bacteria that contribute to drought tolerance
title_short	Invasive Lactuca serriola seeds contain endophytic bacteria that contribute to drought tolerance
title_full	Invasive Lactuca serriola seeds contain endophytic bacteria that contribute to drought tolerance
title_fullStr	Invasive Lactuca serriola seeds contain endophytic bacteria that contribute to drought tolerance
title_full_unstemmed	Invasive Lactuca serriola seeds contain endophytic bacteria that contribute to drought tolerance
title_sort	invasive lactuca serriola seeds contain endophytic bacteria that contribute to drought tolerance
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/1292f4a011294a06b4b116c71f4e62ae
work_keys_str_mv	AT seorinjeong invasivelactucaserriolaseedscontainendophyticbacteriathatcontributetodroughttolerance AT taeminkim invasivelactucaserriolaseedscontainendophyticbacteriathatcontributetodroughttolerance AT byungwookchoi invasivelactucaserriolaseedscontainendophyticbacteriathatcontributetodroughttolerance AT yousukkim invasivelactucaserriolaseedscontainendophyticbacteriathatcontributetodroughttolerance AT eunsukkim invasivelactucaserriolaseedscontainendophyticbacteriathatcontributetodroughttolerance
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Invasive Lactuca serriola seeds contain endophytic bacteria that contribute to drought tolerance

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