Skip to main content

Classification of trichome types within species of the water fern Salvinia, and ontogeny of the egg-beater trichomes

Buy Article:

$50.00 plus tax (Refund Policy)

Abstract:

Species of the water fern Salvinia are well known for their extremely water-repellent floating leaves. The architecture of Salvinia surfaces is of great interest for biomimetic applications, because submersed in water, they retain air films for a long period. Knowledge of these surfaces is also important for pest control, since one species (Salvinia molesta D.S. Mitch.) is a pantropic invasive aquatic weed. The micromorphology of the leaf surfaces of six representative species has been characterized by scanning electron microscopy. Based on their morphology, the trichomes are classified in four types, named after the typical species. Among the species examined, numbers, distribution, and sizes of the trichome types vary significantly. The simplest types, the Cucullata trichomes, are multicellular, uniseriate, and up to 800m high. Groups of two multicellular, uniseriate trichomes are described as the Oblongifolia trichomes. The Natans trichomes are grouped as four multicellular, uniseriate trichomes. The Molesta trichomes are composed of four trichomes, which are connected by the second last apical cells of the trichome. The ontogeny of the Molesta trichome groups was puzzling and resulted in various names being applied to them (“Krönchenhaare,” “egg-beater,” or “coroniform” hairs). Their unique development from four solitary uniseriate trichomes to groups of four connected trichomes is described in detail.

On connaît bien l'imperméabilité extrême des feuilles flottantes des espèces de fougères aquatiques du genre Salvinia. L'architecture des surfaces des Salvinia spp présente un grand intérêt pour des applications en biomimétisme, parce que lorsqu'elles sont immergées dans l'eau, elles retiennent des films d'air pendant de longues périodes. La connaissance de ces surfaces revêt également de l'importance pour la lutte biologique, puisqu'une espèce (Salvinia molesta D.S. Mitch.) constitue une adventice aquatique envahissante pantropique. Les auteurs ont caractérisé la micromorphologie de six espèces représentatives à l'aide de la microscopie électronique par balayage. Sur la base de leur morphologie, on classifie les trichomes selon quatre types, nommés d'après des espèces typiques. Parmi les espèces examinées, les nombres, la distribution et les dimensions des trichomes types varient significativement. Les types les plus simples, les trichomes Cucullata, sont multicellulaires, unisériés et jusqu'à 800m de haut. On décrit deux groupes de trichomes multicellulaires unisériés sous le type trichome Oblongifolia. On regroupe comme trichomes Natans quatre trichomes multicellulaires unisériés. Les trichomes Molesta comportent quatre trichomes reliés par les cellules apicales pénultièmes du trichome. L'ontogénie des groupes à trichomes Molesta présente un problème conduisant à l'utilisation de diverses appellations (poils « Krönchnhaare, » batteur d'œuf, ou coroniformes). On décrit en détail leur développement unique à partir de quatre trichomes solitaires unisériés conduisant à quatre groupes de trichomes inter reliés.

Document Type: Research Article

Publication date: September 1, 2009

More about this publication?
  • Published since 1929, this monthly journal features comprehensive research articles and notes in all segments of plant sciences, including cell and molecular biology, ecology, mycology and plant-microbe interactions, phycology, physiology and biochemistry, structure and development, genetics, systematics, and phytogeography. It also publishes commentary and review articles on topics of current interest, contributed by internationally recognized scientists.

    Previously published as the Canadian Journal of Botany
  • Information for Authors
  • Submit a Paper
  • Subscribe to this Title
  • Terms & Conditions
  • Sample Issue
  • Reprints & Permissions
  • Ingenta Connect is not responsible for the content or availability of external websites
nrc/bot/2009/00000087/00000009/art00003
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more