We localized the tissues and cells that contribute to scent biosynthesis in scented and non-scented Rosa x hybrida cultivars as part of a detailed cytological analysis of the rose petal. Adaxial petal epidermal cells have a typical conical, papillate shape whereas abaxial petal epidermal cells are flat. Using two different techniques, solid/liquid phase extraction and headspace collection of vo...

Blade outgrowth and region-specific cell differentiation are crucial events during the early development of plant leaves, and the progression of both of these events requires a normal adaxial-abaxial pattern. In a recent study, we had demonstrated that two WUSCHEL-RELATED HOMEOBOX (WOX) family genes, i.e., PRESSED FLOWER (PRS) and WOX1, act redundantly in blade outgrowth and adaxial-abaxial pat...

Species of Carlina corymbosa L.,Carthamus dentatus Vahl. and Picnomon acarna (L.) Cass. are belonging to Asteraceae family. The purpose the study is determine anatomical structures these species in same tribe compare features. Samples root, stem leaf e-ach were collected, fixed examined using a light micros-cope. In addition, some features measured. Secondary growth was observed root cross sect...

In Brazil, Froelichia tomentosa (Mart.) Moq. has records of occurrence in Rio Grande do Sul (RS) and Bahia, however, the former there are indications that its populations extinct. RS, restricted to region sandy- fields. this region, biodiversity been threatened by advances agriculture forestry intensified sandy patch process. Therefore, work aimed describe morphoanatomy ultrastructure leaf blad...

The anatomy of leaves and inflorescence axes of Spathanthus (2 spp.), Rapatea (2 spp.), Cephalostemon (1 sp.), and Duckea (1 sp.) (Rapateoideae, Rapateaceae) was studied to identify useful characters for taxonomy. The cross-section shape of inflorescence axis differentiates the genera, while the cross-section shape and structure of leaf midrib has a specific value. The following characteristics...

Asymmetric development of plant lateral organs is initiated by a partitioning of organ primordia into distinct domains along their adaxial/abaxial axis. Two primary determinants of abaxial cell fate are members of the KANADI and YABBY gene families. Progressive loss of KANADI activity in loss-of-function mutants results in progressive transformation of abaxial cell types into adaxial ones and a...

The present study assesses light-induced variations in phenolic compounds in leaves of saplings of two co-occurring temperate species (Acer platanoides L., and Fraxinus excelsior L.) along a light gradient using a new non-invasive optical method (Dualex). The Dualex-derived UV absorbance of leaf epidermis (the sum of the adaxial and abaxial faces, AUV) increased significantly with increasing li...

Our current understanding of guard cell signaling pathways is derived from studies in a small number of model species. The ability to study stomatal responses in isolated epidermis has been an important factor in elucidating the mechanisms by which the stomata of these species respond to environmental stresses. However, such approaches have rarely been applied to study guard cell signaling in t...