| Title: | "Resolving the non-papilionaceous flower of Camoensia scandens, a papilionoid legume of the core genistoid clade: development, glands and insights into the pollination and systematics of the group" |
| Author(s): | Leite VG; Teixeira SP; Godoy F; Paulino JV; Mansano VF; |
| Address: | "Departamento de Ciencias Farmaceuticas, Faculdade de Ciencias Farmaceuticas de Ribeirao Preto, Universidade de Sao Paulo (USP), Av. do Cafe, s/n, Ribeirao Preto, SP, 14040-903, Brazil. Instituto de Pesquisa Jardim Botanico do Rio de Janeiro, DIPEQ, Rua Pacheco Leao, 915 Cidade Universitaria, Rio de Janeiro, RJ, 22460-030, Brazil. Departamento de Ciencias Farmaceuticas, Faculdade de Ciencias Farmaceuticas de Ribeirao Preto, Universidade de Sao Paulo (USP), Av. do Cafe, s/n, Ribeirao Preto, SP, 14040-903, Brazil. spadua@fcfrp.usp.br. Departamento de Produtos Naturais e Alimentos, Faculdade de Farmacia, Universidade Federal do Rio de Janeiro, Avenida Professor Paulo Rocco s/n, Centro de Ciencias da Saude, Bloco A segundo andar sala 06, Ilha do Fundao, Rio de Janeiro, RJ, 21941902, Brazil" |
| DOI: | 10.1007/s10265-021-01293-5 |
| ISSN/ISBN: | 1618-0860 (Electronic) 0918-9440 (Linking) |
| Abstract: | "Camoensia scandens is a papilionoid legume inserted in the core genistoid clade. It has large, crepuscular, scented flowers but the corolla is non-papilionaceous, which deviates from the pattern found in the subfamily. The vexillum has a folded claw, forming a tube, which is opposed to the androecium opening; all petals have yellow-gold crinkled margins. In addition, there is a long hypanthium, which stores a translucid liquid. The goal of this study is to elucidate the ontogenetic pathways that result in such a peculiar flower and the glands responsible for the sweet fragrance of the petals. Floral buds and flowers were processed for SEM, TEM and light microscopy analyses. Five sepals arise unidirectionally followed by five petals that initiate simultaneously. After the petals, 11 stamens emerge unidirectionally; a pair of adaxial stamens is opposite to the vexillum. In the intermediate developmental stages the sepals unite basally; the two adaxial sepals unite with each other to a greater extent than with the other sepals. The filaments are basally connate, forming a tube with an adaxial opening at the base. The carpel emerges concomitantly with the two abaxial antepetalous stamens. The long hypanthium forms from the outer floral organs (base of the sepals, petals, filaments) and is attached to the base of the stipe. The corolla is noticeable in the intermediate stages of development. The crinkled golden margins house scent glands formed of a secretory epidermis with secretory trichomes and secretory subepidermal cells. The odor is composed of neutral polysaccharides, nitrogenous substances and essential oils. An extensive nectariferous region is found on the inner surface of the hypanthial tube. The nectar is translucent, viscous and released through large pores. The comparison of our data with that of other genistoid flowers enabled discussions about the pollination and systematics of the group" |
| Keywords: | *Fabaceae Flowers Plant Nectar *Pollination Vegetables Anatomy Corolla Fragrance Glandular trichomes Leguminosae Osmophore; |
| Notes: | "MedlineLeite, Viviane Goncalves Teixeira, Simone Padua Godoy, Fernanda Paulino, Juliana Villela Mansano, Vidal Freitas eng 154529/2016-8/CNPq/ 302806/2019-9/CNPq/ 421121/2016-5/CNPq/ OO1/Capes/ E-26/010.100998/2018/Faperj/ Japan 2021/04/14 J Plant Res. 2021 Jul; 134(4):823-839. doi: 10.1007/s10265-021-01293-5. Epub 2021 Apr 13" |
