HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Full Text (PDF) Submit a response Alert me when this article is cited Alert me when eLetters are posted Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (6) Citing Articles via Google Scholar Google Scholar Articles by Gleissberg, S. Search for Related Content PubMed Articles by Gleissberg, S. Agricola Articles by Gleissberg, S.

Comparative analysis of leaf shape development in Eschscholzia californica and other Papaveraceae-Eschscholzioideae¹

Institut für Spezielle Botanik, Universität Mainz, Bentzelweg 9a, 55099 Mainz, Germany

Dissected leaves in Papaveraceae-Eschscholzioideae have an architecture frequently encountered in the basal eudicot clade Ranunculales that could represent an ancestral condition for eudicots. Developmental morphology of foliage leaves was investigated using scanning electron microscopy and focusing on primordium formation activity (primary morphogenesis) at the leaf margin. Eschscholzia californica, E. lobii, and Hunnemannia fumariaefolia had a polyternate-acropetal mode of leaf dissection. Segment formation continued around the whole leaf blade periphery. Differences in mature leaf architecture was traced to variations in regional blastozone activity and duration. Epidermal cell size measurements in E. californica indicated that the leaf tip tissue starts to differentiate already at the onset of organogenic activity and that tip cells remain larger than epidermal cells at the basal margins during further growth. It is argued that early differentiation of the tip does not set up a general basipetal differentiation gradient, but is a local effect that allows acropetal pinna initiation to occur in subapical blastozones. In Dendromecon, secondarily entire leaves have evolved through the loss of primordium formation activity. Marginal corrugations found in Dendromecon form late in development and are not reminiscent of lateral primordia.

Key Words: blastozone • Dendromecon • Eschscholzia • histogenesis • Hunnemannia • leaf dissection • primary morphogenesis

This article has been cited by other articles:

				S. Wege, A. Scholz, S. Gleissberg, and A. Becker Highly Efficient Virus-induced Gene Silencing (VIGS) in California Poppy (Eschscholzia californica): An Evaluation of VIGS as a Strategy to Obtain Functional Data from Non-model Plants Ann. Bot., September 1, 2007; 100(3): 641 - 649. [Abstract] [Full Text] [PDF]

				C. Damerval, M. L. Guilloux, M. Jager, and C. Charon Diversity and Evolution of CYCLOIDEA-Like TCP Genes in Relation to Flower Development in Papaveraceae Plant Physiology, February 1, 2007; 143(2): 759 - 772. [Abstract] [Full Text] [PDF]