0000000000335480
AUTHOR
G. Durante
Sequence analyses of S10-spcoperon among 16SrV group phytoplasmas: phylogenetic relationships and identification of discriminating single nucleotide polymorphisms
Phytoplasmas are cell-wall less, uncultivable bacteria, belonging to the class Mollicutes. They parasitise both plant hosts and insect vectors, but knowledge of their biological and molecular properties is limited. In particular, analyses of 16S rDNA nucleotide sequences revealed that 16SrV group phytoplasma strains identified in grapevine plants are closely related, but associated with distinct ecologies. In this work, we investigated the evolutionary relationships of eight representative 16SrV phytoplasma strains by sequencing 15 ribosomal protein (rp) genes positioned within the S10-spc operon. Phylogenetic analyses of concatenated nucleotide and amino acid sequences underscored that 16S…
Plankton Tracker: A novel integrated system to investigate the dynamic sinking behavior in phytoplankton
Abstract Phytoplankton sinking is an important property that can determine community composition, affecting nutrient and light absorption in the photic zone, and influencing biogeochemical cycling via material loss to the deep ocean. To date, the difficulty in exploring the sinking processes is partly due to methodological limitations in measuring phytoplankton sinking rate. However, in the last decade, works have illustrated various methods based on some non-invasive and low perturbing approaches (laser scanner, video-microscopy, fluorescence spectroscopy). In this study, we review the methods for sinking rate estimation and describe the Plankton Tracker, a novel integrated system to inves…