Taxonomic study of the genus Padina (Dictyotales, Phaeophyceae) from the Persian Gulf coast was conducted based on morphology and molecular phylogenetic analyses using chloroplast encoded large subunit RuBisCo (rbcL) gene sequences. Detailed descriptions of each species found in this study are described. Several morphological characters, such as number of cell layers composing the thallus, pr...

Loss of selective constraint on a gene may be expected following changes in the environment or life history that render its function unnecessary. The long-term persistence of protein-coding genes after the loss of known functional necessity can occur by chance or because of selective maintenance of an unknown gene function. The selective maintenance of an alternative gene function is not demons...

s. St. Louis: Missouri Botanical Garden, 250. Conti E, Litt A, Sytsma KJ. 1996. Circumscription of Myrtales and their relationships to other rosids: evidence from rbcL sequence data. American Journal of Botany 83: 221–233. Contreras VR, Scogin R, Philbrick CT. 1993. A phytochemical study of selected Podostemaceae: systematic implications. Aliso 13: 513–520. Cronquist A. 1981. An integrated syst...

Generic concepts in the economically important agarophyte red algal family Gracilariaceae were evaluated based on maximum parsimony, Bayesian likelihood, and minimum evolution analyses of the chloroplast-encoded rbcL gene from 67 specimens worldwide. The results confirm the monophyly of the family and identify three large clades, one of which corresponds to the ancestral antiboreal genera Curdi...

The use of molecular marker in the dairy sector is gaining large acceptance as a reliable diagnostic approach for food authenticity and traceability. Using a PCR approach, the rbcL marker, a chloroplast-based gene, was selected to amplify plant DNA fragments in raw cow milk samples collected from stock farms or bought on the Italian market. rbcL-specific DNA fragments could be found in total mi...

background:confirmation of olive oil authenticity and particularly virgin olive oil has a great importance. several advanced chemical and genetic analyses have been used to monitor especial components; however each has its limitations especially when detecting hazelnut-adulterated olive oil. objectives:the objective of this research is to assess the presence of trace amount of hazelnut oil in o...

A new species of mesophotic marine red algae, Ethelia hawaiiensis sp. nov., is illustrated and described. distinguished from other members the genus by its large diameter assurgent filament cells, in having thallus cavities that are frequently inhabited microalgae, as well DNA sequence. Analyses mitochondrial COI, plastid rbcL, nuclear SSU sequences demonstrated E. was distinct it not phylogene...

In order to understand how Synechococcus in the estuarine environment (Chesapeake Bay) are phylogenetically related to other known marine Synechococcus, partial rbcL gene sequences from 25 strains of Synechococcus spp. isolated from estuarine, coastal and oceanic waters were sequenced. The rbcL gene phylogeny showed that Chesapeake Bay Synechococcus isolates together with other marine Synechoco...