Micro-morphology and anatomy of Turbinicarpus (Cactaceae) spines
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Universidad Nacional Autónoma de México
2009
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| author | Alessandro Mosco |
| author_facet | Alessandro Mosco |
| contents | Micro-morphology and anatomy of Turbinicarpus (Cactaceae) spines Alessandro Mosco Biología fibers morphology spine micro sclerenchyma Spine anatomy Spines are a striking feature of cacti and display wide variation in size, number, shape, and texture. This study showed that Turbinicarpus species exhibit not only a high variability in the gross morphology of the spines, but also in their micro-morphology. Their surface can be smooth or ornamented with projections that can be low, conical, pinnate, or long trichomes. The epidermis can be continuous, broken up into single cell elements or transversely fi ssured, the fi ssures extending deeply into the underlying sclerenchyma. The mechanical properties of the spines are related to their anatomy, here documented for the fi rst time. The woody rigid spines being made up of fi bers with thick walls (> 3 um), while papery or corky spines have a sclerenchyma made up of fi bers with thin walls (< 2 um). Alternatively, spine anatomy can be dimorphic with the outermost layers made up of thin-walled fi bers and an inner core made up of thick-walled fibers. Turbinicarpus taxonomy mostly relies on spine features and the newly collected data can contribute to a better understanding of the interspecific relationships. The epidermal features like long trichomes or the lack of ornamentation as well as the modifi ed anatomy of corky spines may be apomorphic characters within the genus. 2009 artículo científico 1870-3453 https://www.redalyc.org/articulo.oa?id=42511957014 en http://www.redalyc.org/revista.oa?id=425 Revista Mexicana de Biodiversidad application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Biodiversidad (México) Num.1 Vol.80 |
| format | Artículo científico |
| id | redalyc_42511957014 |
| institution | Redalyc |
| language | en |
| publishDate | 2009 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Micro-morphology and anatomy of Turbinicarpus (Cactaceae) spines Alessandro Mosco Biología fibers morphology spine micro sclerenchyma Spine anatomy Micro-morphology and anatomy of Turbinicarpus (Cactaceae) spines Alessandro Mosco Biología fibers morphology spine micro sclerenchyma Spine anatomy Spines are a striking feature of cacti and display wide variation in size, number, shape, and texture. This study showed that Turbinicarpus species exhibit not only a high variability in the gross morphology of the spines, but also in their micro-morphology. Their surface can be smooth or ornamented with projections that can be low, conical, pinnate, or long trichomes. The epidermis can be continuous, broken up into single cell elements or transversely fi ssured, the fi ssures extending deeply into the underlying sclerenchyma. The mechanical properties of the spines are related to their anatomy, here documented for the fi rst time. The woody rigid spines being made up of fi bers with thick walls (> 3 um), while papery or corky spines have a sclerenchyma made up of fi bers with thin walls (< 2 um). Alternatively, spine anatomy can be dimorphic with the outermost layers made up of thin-walled fi bers and an inner core made up of thick-walled fibers. Turbinicarpus taxonomy mostly relies on spine features and the newly collected data can contribute to a better understanding of the interspecific relationships. The epidermal features like long trichomes or the lack of ornamentation as well as the modifi ed anatomy of corky spines may be apomorphic characters within the genus. 2009 artículo científico 1870-3453 https://www.redalyc.org/articulo.oa?id=42511957014 en http://www.redalyc.org/revista.oa?id=425 Revista Mexicana de Biodiversidad application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Biodiversidad (México) Num.1 Vol.80 |
| title | Micro-morphology and anatomy of Turbinicarpus (Cactaceae) spines |
| topic | Biología fibers morphology spine micro sclerenchyma Spine anatomy |
| url | https://www.redalyc.org/articulo.oa?id=42511957014 |