Development of conceptacles in Amphiroa (Corallinales, Rhodophyta)
نویسندگان
چکیده
منابع مشابه
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اشعار ریچ، به عنوان اشعاری که همیشه در حال تغییر و دگرگونی هستند، تجسمی از رشد و دگرگونیِ انسان هستد. پایان نامه ی حاضر، با تمرکز بر روی مراحل سیر شعری ریچ از تغییری در دنیا به عکس هایی فوری از یک عروس، سپس به شیرجه به درون کشتی شکسته و در نهایت به صبری عجیب مرا تا اینجا آورده، به بررسی این مراحل در قالب نظر شوالتر در رابطه با سه مرحله ی پیشرفت ادبی زنان یعنی مرحله ی زنانه، زن گرا و زن محور می پ...
15 صفحه اولResolving cryptic species of Bossiella (Corallinales, Rhodophyta) using contemporary and historical DNA.
PREMISE OF THE STUDY Phenotypic plasticity and convergent evolution have long complicated traditional morphological taxonomy. Fortunately, DNA sequences provide an additional basis for comparison, independent of morphology. Most importantly, by obtaining DNA sequences from historical type specimens, we are now able to unequivocally match species names to genetic groups, often with surprising re...
متن کاملCrusticorallina gen. nov., a nongeniculate genus in the subfamily Corallinoideae (Corallinales, Rhodophyta).
Molecular phylogenetic analyses of 18S rDNA (SSU) gene sequences confirm the placement of Crusticorallina gen. nov. in Corallinoideae, the first nongeniculate genus in an otherwise geniculate subfamily. Crusticorallina is distinguished from all other coralline genera by the following suite of morpho-anatomical characters: (i) sunken, uniporate gametangial and bi/tetrasporangial conceptacles, (i...
متن کاملChiharaea and Yamadaia (corallinales, Rhodophyta) Represent Reduced and Recently Derived Articulated Coralline Morphologies(1).
Phycologists have hypothesized that the diminutive fronds produced by species in the genera Chiharaea and Yamadaia, which are composed of comparatively few genicula and intergenicula, represent morphological intermediates in the evolution of articulated corallines from crustose ancestors. We test this "intermediate frond hypothesis" by comparing rbcL sequences from the generitype species Chihar...
متن کاملQuantifying Growth and Calcium Carbonate Deposition of Calliarthron Cheilosporioides (corallinales, Rhodophyta) in the Field Using a Persistent Vital Stain
Growth and calcium carbonate deposition rates of the coralline alga Calliarthron cheilosporioides Manza were quantified by monitoring fronds in the intertidal zone that had been chemically labeled with the nontoxic fluorescent brightener Calcofluor white. This vital stain effectively labeled apical meristems of coralline thalli in the field: fronds exposed for only 5 min had detectable chemical...
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ژورنال
عنوان ژورنال: Acta Botanica Brasilica
سال: 2013
ISSN: 0102-3306
DOI: 10.1590/s0102-33062013000400008