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Strigolactones are chemoattractants for host tropism in Orobanchaceae parasitic plants

Parasitic plants are worldwide threats that damage major agricultural crops. To initiate infection, parasitic plants have developed the ability to locate hosts and grow towards them. This ability, called host tropism, is critical for parasite survival, but its underlying mechanism remains mostly unr...

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Autores principales: Ogawa, Satoshi, Cui, Songkui, White, Alexandra R. F., Nelson, David C., Yoshida, Satoko, Shirasu, Ken
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9378612/
https://www.ncbi.nlm.nih.gov/pubmed/35970835
http://dx.doi.org/10.1038/s41467-022-32314-z
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author Ogawa, Satoshi
Cui, Songkui
White, Alexandra R. F.
Nelson, David C.
Yoshida, Satoko
Shirasu, Ken
author_facet Ogawa, Satoshi
Cui, Songkui
White, Alexandra R. F.
Nelson, David C.
Yoshida, Satoko
Shirasu, Ken
author_sort Ogawa, Satoshi
collection PubMed
description Parasitic plants are worldwide threats that damage major agricultural crops. To initiate infection, parasitic plants have developed the ability to locate hosts and grow towards them. This ability, called host tropism, is critical for parasite survival, but its underlying mechanism remains mostly unresolved. To characterise host tropism, we used the model facultative root parasite Phtheirospermum japonicum, a member of the Orobanchaceae. Here, we show that strigolactones (SLs) function as host-derived chemoattractants. Chemotropism to SLs is also found in Striga hermonthica, a parasitic member of the Orobanchaceae, but not in non-parasites. Intriguingly, chemotropism to SLs in P. japonicum is attenuated in ammonium ion-rich conditions, where SLs are perceived, but the resulting asymmetrical accumulation of the auxin transporter PIN2 is diminished. P. japonicum encodes putative receptors that sense exogenous SLs, whereas expression of a dominant-negative form reduces its chemotropic ability. We propose a function for SLs as navigators for parasite roots.
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spelling pubmed-93786122022-08-17 Strigolactones are chemoattractants for host tropism in Orobanchaceae parasitic plants Ogawa, Satoshi Cui, Songkui White, Alexandra R. F. Nelson, David C. Yoshida, Satoko Shirasu, Ken Nat Commun Article Parasitic plants are worldwide threats that damage major agricultural crops. To initiate infection, parasitic plants have developed the ability to locate hosts and grow towards them. This ability, called host tropism, is critical for parasite survival, but its underlying mechanism remains mostly unresolved. To characterise host tropism, we used the model facultative root parasite Phtheirospermum japonicum, a member of the Orobanchaceae. Here, we show that strigolactones (SLs) function as host-derived chemoattractants. Chemotropism to SLs is also found in Striga hermonthica, a parasitic member of the Orobanchaceae, but not in non-parasites. Intriguingly, chemotropism to SLs in P. japonicum is attenuated in ammonium ion-rich conditions, where SLs are perceived, but the resulting asymmetrical accumulation of the auxin transporter PIN2 is diminished. P. japonicum encodes putative receptors that sense exogenous SLs, whereas expression of a dominant-negative form reduces its chemotropic ability. We propose a function for SLs as navigators for parasite roots. Nature Publishing Group UK 2022-08-15 /pmc/articles/PMC9378612/ /pubmed/35970835 http://dx.doi.org/10.1038/s41467-022-32314-z Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Ogawa, Satoshi
Cui, Songkui
White, Alexandra R. F.
Nelson, David C.
Yoshida, Satoko
Shirasu, Ken
Strigolactones are chemoattractants for host tropism in Orobanchaceae parasitic plants
title Strigolactones are chemoattractants for host tropism in Orobanchaceae parasitic plants
title_full Strigolactones are chemoattractants for host tropism in Orobanchaceae parasitic plants
title_fullStr Strigolactones are chemoattractants for host tropism in Orobanchaceae parasitic plants
title_full_unstemmed Strigolactones are chemoattractants for host tropism in Orobanchaceae parasitic plants
title_short Strigolactones are chemoattractants for host tropism in Orobanchaceae parasitic plants
title_sort strigolactones are chemoattractants for host tropism in orobanchaceae parasitic plants
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9378612/
https://www.ncbi.nlm.nih.gov/pubmed/35970835
http://dx.doi.org/10.1038/s41467-022-32314-z
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