Pollen morphology and infrageneric classification of selected Callicarpa species (Lamiaceae) from the Philippines and Borneo

Abstract. Danila JS, Alejandro GJD. 2020. Pollen morphology and infrageneric classification of selected Callicarpa species (Lamiaceae) from the Philippines and Borneo. Biodiversitas 21: 5736-5746. We used pollen grains of ten species representing the controversial genera Geunsia Blume and Callicarpa...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Jennifer Danila, GRECEBIO JONATHAN D. ALEJANDRO
Formato:	article
Lenguaje:	EN
Publicado:	MBI & UNS Solo 2020
Materias:	callicarpa, geunsia, infrageneric, pollen morphology Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/7847a84c80ba413ebc8a1d1792c763b9
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:7847a84c80ba413ebc8a1d1792c763b9
record_format	dspace
spelling	oai:doaj.org-article:7847a84c80ba413ebc8a1d1792c763b92021-11-22T00:52:01ZPollen morphology and infrageneric classification of selected Callicarpa species (Lamiaceae) from the Philippines and Borneo1412-033X2085-472210.13057/biodiv/d211234https://doaj.org/article/7847a84c80ba413ebc8a1d1792c763b92020-11-01T00:00:00Zhttps://smujo.id/biodiv/article/view/7045https://doaj.org/toc/1412-033Xhttps://doaj.org/toc/2085-4722Abstract. Danila JS, Alejandro GJD. 2020. Pollen morphology and infrageneric classification of selected Callicarpa species (Lamiaceae) from the Philippines and Borneo. Biodiversitas 21: 5736-5746. We used pollen grains of ten species representing the controversial genera Geunsia Blume and Callicarpa L. from the key centers of Malesia - Philippines, and Borneo including other countries in Asia. Herbarium specimens and collected samples from the field were examined using Scanning Electron Microscopy (SEM) in search of new characters to establish conclusive evidence that might contribute to the study of the relationship between Geunsia and Callicarpa. Based on SEM observations, both the investigated pollen grains of Geunsia and Callicarpa are mostly small to medium, spheroidal or circular, prolate to oblate, isopolar, and tricolpate. Moreover, the exine surface is mostly coarsely reticulated with a thin perforated colpus edge and sunken finely granulated colpus membrane. However, exine ornamentation shows possible separation of Geunsia and Callicarpa due to various morphological results observed. Several types of exine ornamentation were found in species of the section Callicarpa, i.e., C. erioclona, C. arborea, C. macrophylla, and C. candicans which attributes in the projected separation of these species while four species in the section Geunsia are united as a group having coarsely reticulate exine. Surprisingly, C. arborea samples give additional support to the hypothesis that rugulate exine sculpture might be its plesiomorphic character due to evolutionary evidence of other exine types of this species. On the other hand, pollen size and shape class of the sections of Geunsia and Callicarpa were both observed with similar features having an average pollen size equivalent to medium and a prolate shape supporting the concept of previous studies to nest Geunsia within Callicarpa. This reveals that pollen morphology is useful in the study of infrageneric classification within these groups. However, further morphological studies involving larger number of specimens are needed especially in the study of exine to prove its consistency as diagnostic character in the study of phylogenetic relationship.Jennifer DanilaGRECEBIO JONATHAN D. ALEJANDROMBI & UNS Soloarticlecallicarpa, geunsia, infrageneric, pollen morphologyBiology (General)QH301-705.5ENBiodiversitas, Vol 21, Iss 12 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	callicarpa, geunsia, infrageneric, pollen morphology Biology (General) QH301-705.5
spellingShingle	callicarpa, geunsia, infrageneric, pollen morphology Biology (General) QH301-705.5 Jennifer Danila GRECEBIO JONATHAN D. ALEJANDRO Pollen morphology and infrageneric classification of selected Callicarpa species (Lamiaceae) from the Philippines and Borneo
description	Abstract. Danila JS, Alejandro GJD. 2020. Pollen morphology and infrageneric classification of selected Callicarpa species (Lamiaceae) from the Philippines and Borneo. Biodiversitas 21: 5736-5746. We used pollen grains of ten species representing the controversial genera Geunsia Blume and Callicarpa L. from the key centers of Malesia - Philippines, and Borneo including other countries in Asia. Herbarium specimens and collected samples from the field were examined using Scanning Electron Microscopy (SEM) in search of new characters to establish conclusive evidence that might contribute to the study of the relationship between Geunsia and Callicarpa. Based on SEM observations, both the investigated pollen grains of Geunsia and Callicarpa are mostly small to medium, spheroidal or circular, prolate to oblate, isopolar, and tricolpate. Moreover, the exine surface is mostly coarsely reticulated with a thin perforated colpus edge and sunken finely granulated colpus membrane. However, exine ornamentation shows possible separation of Geunsia and Callicarpa due to various morphological results observed. Several types of exine ornamentation were found in species of the section Callicarpa, i.e., C. erioclona, C. arborea, C. macrophylla, and C. candicans which attributes in the projected separation of these species while four species in the section Geunsia are united as a group having coarsely reticulate exine. Surprisingly, C. arborea samples give additional support to the hypothesis that rugulate exine sculpture might be its plesiomorphic character due to evolutionary evidence of other exine types of this species. On the other hand, pollen size and shape class of the sections of Geunsia and Callicarpa were both observed with similar features having an average pollen size equivalent to medium and a prolate shape supporting the concept of previous studies to nest Geunsia within Callicarpa. This reveals that pollen morphology is useful in the study of infrageneric classification within these groups. However, further morphological studies involving larger number of specimens are needed especially in the study of exine to prove its consistency as diagnostic character in the study of phylogenetic relationship.
format	article
author	Jennifer Danila GRECEBIO JONATHAN D. ALEJANDRO
author_facet	Jennifer Danila GRECEBIO JONATHAN D. ALEJANDRO
author_sort	Jennifer Danila
title	Pollen morphology and infrageneric classification of selected Callicarpa species (Lamiaceae) from the Philippines and Borneo
title_short	Pollen morphology and infrageneric classification of selected Callicarpa species (Lamiaceae) from the Philippines and Borneo
title_full	Pollen morphology and infrageneric classification of selected Callicarpa species (Lamiaceae) from the Philippines and Borneo
title_fullStr	Pollen morphology and infrageneric classification of selected Callicarpa species (Lamiaceae) from the Philippines and Borneo
title_full_unstemmed	Pollen morphology and infrageneric classification of selected Callicarpa species (Lamiaceae) from the Philippines and Borneo
title_sort	pollen morphology and infrageneric classification of selected callicarpa species (lamiaceae) from the philippines and borneo
publisher	MBI & UNS Solo
publishDate	2020
url	https://doaj.org/article/7847a84c80ba413ebc8a1d1792c763b9
work_keys_str_mv	AT jenniferdanila pollenmorphologyandinfragenericclassificationofselectedcallicarpaspecieslamiaceaefromthephilippinesandborneo AT grecebiojonathandalejandro pollenmorphologyandinfragenericclassificationofselectedcallicarpaspecieslamiaceaefromthephilippinesandborneo
_version_	1718418467900620800

Pollen morphology and infrageneric classification of selected Callicarpa species (Lamiaceae) from the Philippines and Borneo

Ejemplares similares