Signaling at Physical Barriers during Pollen–Pistil Interactions

In angiosperms, double fertilization requires pollen tubes to transport non-motile sperm to distant egg cells housed in a specialized female structure known as the pistil, mediating the ultimate fusion between male and female gametes. During this journey, the pollen tube encounters numerous physical...

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Autores principales:	Kayleigh J. Robichaux, Ian S. Wallace
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	pollen penetration plant cell wall pectin cell–cell interaction cell adhesion Biology (General) QH301-705.5 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/2db170badc5e478d9fc7648ce98b4f36
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id	oai:doaj.org-article:2db170badc5e478d9fc7648ce98b4f36
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spelling	oai:doaj.org-article:2db170badc5e478d9fc7648ce98b4f362021-11-25T17:54:31ZSignaling at Physical Barriers during Pollen–Pistil Interactions10.3390/ijms2222122301422-00671661-6596https://doaj.org/article/2db170badc5e478d9fc7648ce98b4f362021-11-01T00:00:00Zhttps://www.mdpi.com/1422-0067/22/22/12230https://doaj.org/toc/1661-6596https://doaj.org/toc/1422-0067In angiosperms, double fertilization requires pollen tubes to transport non-motile sperm to distant egg cells housed in a specialized female structure known as the pistil, mediating the ultimate fusion between male and female gametes. During this journey, the pollen tube encounters numerous physical barriers that must be mechanically circumvented, including the penetration of the stigmatic papillae, style, transmitting tract, and synergid cells as well as the ultimate fusion of sperm cells to the egg or central cell. Additionally, the pollen tube must maintain structural integrity in these compact environments, while responding to positional guidance cues that lead the pollen tube to its destination. Here, we discuss the nature of these physical barriers as well as efforts to genetically and cellularly identify the factors that allow pollen tubes to successfully, specifically, and quickly circumnavigate them.Kayleigh J. RobichauxIan S. WallaceMDPI AGarticlepollen penetrationplant cell wallpectincell–cell interactioncell adhesionBiology (General)QH301-705.5ChemistryQD1-999ENInternational Journal of Molecular Sciences, Vol 22, Iss 12230, p 12230 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	pollen penetration plant cell wall pectin cell–cell interaction cell adhesion Biology (General) QH301-705.5 Chemistry QD1-999
spellingShingle	pollen penetration plant cell wall pectin cell–cell interaction cell adhesion Biology (General) QH301-705.5 Chemistry QD1-999 Kayleigh J. Robichaux Ian S. Wallace Signaling at Physical Barriers during Pollen–Pistil Interactions
description	In angiosperms, double fertilization requires pollen tubes to transport non-motile sperm to distant egg cells housed in a specialized female structure known as the pistil, mediating the ultimate fusion between male and female gametes. During this journey, the pollen tube encounters numerous physical barriers that must be mechanically circumvented, including the penetration of the stigmatic papillae, style, transmitting tract, and synergid cells as well as the ultimate fusion of sperm cells to the egg or central cell. Additionally, the pollen tube must maintain structural integrity in these compact environments, while responding to positional guidance cues that lead the pollen tube to its destination. Here, we discuss the nature of these physical barriers as well as efforts to genetically and cellularly identify the factors that allow pollen tubes to successfully, specifically, and quickly circumnavigate them.
format	article
author	Kayleigh J. Robichaux Ian S. Wallace
author_facet	Kayleigh J. Robichaux Ian S. Wallace
author_sort	Kayleigh J. Robichaux
title	Signaling at Physical Barriers during Pollen–Pistil Interactions
title_short	Signaling at Physical Barriers during Pollen–Pistil Interactions
title_full	Signaling at Physical Barriers during Pollen–Pistil Interactions
title_fullStr	Signaling at Physical Barriers during Pollen–Pistil Interactions
title_full_unstemmed	Signaling at Physical Barriers during Pollen–Pistil Interactions
title_sort	signaling at physical barriers during pollen–pistil interactions
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/2db170badc5e478d9fc7648ce98b4f36
work_keys_str_mv	AT kayleighjrobichaux signalingatphysicalbarriersduringpollenpistilinteractions AT ianswallace signalingatphysicalbarriersduringpollenpistilinteractions
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Signaling at Physical Barriers during Pollen–Pistil Interactions

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