Biology subjects

Martinez Bruno, O.

Publications and source records attributed to Martinez Bruno, O..

2 recordsLinked to original sources

bioRxiv2018

Varieties of the plant Ctenante oppenheimiana: A colorful enigma of evolution.

The plant Ctenante oppenheimiana presents an interesting contrast of colors in the abaxial epidermis. A striking feature is that the stomata are green and cover a purple pavement where the pavement cells have green cellular walls. These characteristics have been used in studies about ecophysiology and phenotypic plasticity. However, the existence of a second tricolor variety of the plant make these characteristics even more heterogeneous and introduce new paradigms of the physiological role underlying this morphology. In this work we show by optical microscopy images the striking differences between the varieties bicolor and tricolor of the plant Ctenante oppenheimiana

plant biology↗

bioRxiv2018

Plants with purple abaxial leaves: A repository of metrics from stomata distribution.

Plants with purple abaxial leaves are very common in nature but the ecophysiological aspects of this phenotype are not well known. We observed here that the purple color of the abaxial tegument in extant plants make stomata completely visible. Based in it we measured the relations between stomatic density and distance between stomata pairs and observed a general log-normal trend line between density and interstomatic distance. These data shows that measures of stomatic distances at purple abaxial leaves are able to be a sensor to environmental changes of living purple plants. In future ecophysiological inferences will be established from the information brought by the measurements of the distance between stomata in purple plants.

plant biology↗