Pollination and Floral Biology of a Rare Morning Glory Species Endemic to Thailand, <i>Argyreia siamensis</i>

<i>Argyreia siamensis</i> is extremely rare, and very little is known about its reproduction. The species has colorful flowers that seem likely to attract pollinators, but population sizes are typically small (<30 individuals). To determine whether poor reproduction contributes to its...

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Autores principales:	Awapa Jirabanjongjit, Paweena Traiperm, Tomoki Sando, Alyssa B. Stewart
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	breeding system Convolvulaceae histochemistry floral nectary pollinators Botany QK1-989
Acceso en línea:	https://doaj.org/article/1470a9cec3fe421cb4c591639e9905ad
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spelling	oai:doaj.org-article:1470a9cec3fe421cb4c591639e9905ad2021-11-25T18:46:19ZPollination and Floral Biology of a Rare Morning Glory Species Endemic to Thailand, <i>Argyreia siamensis</i>10.3390/plants101124022223-7747https://doaj.org/article/1470a9cec3fe421cb4c591639e9905ad2021-11-01T00:00:00Zhttps://www.mdpi.com/2223-7747/10/11/2402https://doaj.org/toc/2223-7747<i>Argyreia siamensis</i> is extremely rare, and very little is known about its reproduction. The species has colorful flowers that seem likely to attract pollinators, but population sizes are typically small (<30 individuals). To determine whether poor reproduction contributes to its rarity, we investigated its mating system and potential pollinators in two populations. We also examined the staminal trichomes and floral nectary to investigate their role in pollinator attraction. The mating system was assessed with a bagging experiment and pollinator visits were recorded with action cameras. Additionally, we tested the staminal trichomes and floral nectary for terpenes and flavonoids and examined floral nectary micromorphology via scanning electron microscope and compound light microscope. Our results reveal that <i>A. siamensis</i> is self-incompatible and dependent on pollinators; the western population was pollinated by bees (Meliponini and <i>Amegilla</i>), while the eastern population was mainly pollinated by skipper butterflies (Hesperiidae). Both staminal trichomes and the floral nectary appear to contribute to pollinator attraction through the presence of terpenes and flavonoids (in both secretory structures) and nectariferous tissue and nectarostomata (in the nectary). Our results indicate that <i>A. siamensis</i> has reliable and effective pollinators and that insufficient pollination is likely not a primary cause of its rarity.Awapa JirabanjongjitPaweena TraipermTomoki SandoAlyssa B. StewartMDPI AGarticlebreeding systemConvolvulaceaehistochemistryfloral nectarypollinatorsBotanyQK1-989ENPlants, Vol 10, Iss 2402, p 2402 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	breeding system Convolvulaceae histochemistry floral nectary pollinators Botany QK1-989
spellingShingle	breeding system Convolvulaceae histochemistry floral nectary pollinators Botany QK1-989 Awapa Jirabanjongjit Paweena Traiperm Tomoki Sando Alyssa B. Stewart Pollination and Floral Biology of a Rare Morning Glory Species Endemic to Thailand, <i>Argyreia siamensis</i>
description	<i>Argyreia siamensis</i> is extremely rare, and very little is known about its reproduction. The species has colorful flowers that seem likely to attract pollinators, but population sizes are typically small (<30 individuals). To determine whether poor reproduction contributes to its rarity, we investigated its mating system and potential pollinators in two populations. We also examined the staminal trichomes and floral nectary to investigate their role in pollinator attraction. The mating system was assessed with a bagging experiment and pollinator visits were recorded with action cameras. Additionally, we tested the staminal trichomes and floral nectary for terpenes and flavonoids and examined floral nectary micromorphology via scanning electron microscope and compound light microscope. Our results reveal that <i>A. siamensis</i> is self-incompatible and dependent on pollinators; the western population was pollinated by bees (Meliponini and <i>Amegilla</i>), while the eastern population was mainly pollinated by skipper butterflies (Hesperiidae). Both staminal trichomes and the floral nectary appear to contribute to pollinator attraction through the presence of terpenes and flavonoids (in both secretory structures) and nectariferous tissue and nectarostomata (in the nectary). Our results indicate that <i>A. siamensis</i> has reliable and effective pollinators and that insufficient pollination is likely not a primary cause of its rarity.
format	article
author	Awapa Jirabanjongjit Paweena Traiperm Tomoki Sando Alyssa B. Stewart
author_facet	Awapa Jirabanjongjit Paweena Traiperm Tomoki Sando Alyssa B. Stewart
author_sort	Awapa Jirabanjongjit
title	Pollination and Floral Biology of a Rare Morning Glory Species Endemic to Thailand, <i>Argyreia siamensis</i>
title_short	Pollination and Floral Biology of a Rare Morning Glory Species Endemic to Thailand, <i>Argyreia siamensis</i>
title_full	Pollination and Floral Biology of a Rare Morning Glory Species Endemic to Thailand, <i>Argyreia siamensis</i>
title_fullStr	Pollination and Floral Biology of a Rare Morning Glory Species Endemic to Thailand, <i>Argyreia siamensis</i>
title_full_unstemmed	Pollination and Floral Biology of a Rare Morning Glory Species Endemic to Thailand, <i>Argyreia siamensis</i>
title_sort	pollination and floral biology of a rare morning glory species endemic to thailand, <i>argyreia siamensis</i>
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/1470a9cec3fe421cb4c591639e9905ad
work_keys_str_mv	AT awapajirabanjongjit pollinationandfloralbiologyofararemorninggloryspeciesendemictothailandiargyreiasiamensisi AT paweenatraiperm pollinationandfloralbiologyofararemorninggloryspeciesendemictothailandiargyreiasiamensisi AT tomokisando pollinationandfloralbiologyofararemorninggloryspeciesendemictothailandiargyreiasiamensisi AT alyssabstewart pollinationandfloralbiologyofararemorninggloryspeciesendemictothailandiargyreiasiamensisi
_version_	1718410695960166400

Pollination and Floral Biology of a Rare Morning Glory Species Endemic to Thailand, <i>Argyreia siamensis</i>

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