Results 81 to 90 of about 2,710,018 (298)

A macro- and micro-evolutionary investigation of African Camponotus ants [PDF]

open access: yes, 2002
Bibliography: leaves 213-233.Camponotus than the cytochrome oxidase II gene, based on almost all measures of phylogenetic utility. The primary hypothesis proposed to account for this observation is that these two mitochondrial genes are evolving under ...
Eick, Brigitte N
core   +1 more source

Characterization of two complete chloroplast genomes of Lindera megaphylla (Lauraceae)

open access: yesMitochondrial DNA. Part B. Resources, 2019
Lindera megaphylla (Lauraceae) is an ecologically important and dominant evergreen broad-leaf tree species in the warm-temperate and subtropical zone of China. In this study, we sequenced and assembled two complete genomes of L. megaphylla (LM01 and LM02)
Kai Jiang   +3 more
doaj   +1 more source

Coordinated Architectural and Chemical Reinforcement in the Crushing Mandible of a Soldier Termite

open access: yesAdvanced Functional Materials, EarlyView.
The crushing mandible of a soldier termite withstands substantial biting loads despite lacking mineral. Its cuticle is partitioned: convex teeth pair hardness and zinc enrichment with aligned chitin fibers for contact durability, while stiffer concave regions between teeth carry bending loads.
Andrew Tran Nguyen   +16 more
wiley   +1 more source

Chloroplast genome structure and phylogenetic position of Ruppia sinensis Shuo Yu & den Hartog

open access: yesMitochondrial DNA. Part B. Resources, 2019
Ruppia is widely distributed in marine and inland saline habitats in temperate and tropical regions. In this study, the complete chloroplast genome sequence of R. sinensis was successfully obtained using Illumina sequencing.
Shuo Yu, Miao-Miao Shi, Kai Jiang
doaj   +1 more source

Accurate and robust phylogeny estimation based on profile distances: a study of the Chlorophyceae (Chlorophyta) [PDF]

open access: yes, 2004
Müller T, Rahmann S, Dandekar T, Wolf M. Accurate and robust phylogeny estimation based on profile distances: a study of the Chlorophyceae (Chlorophyta). BMC Evolutionary Biology.
Sven Rahmann   +7 more
core   +1 more source

Melanin's Role in Balancing Mechanical Strength and Reproductive Output in Environmentally Stressed Fungal Spores

open access: yesAdvanced Functional Materials, EarlyView.
Melanin content directly controls fungal spore mechanical properties, with pigmented spores achieving rupture forces two orders of magnitude higher than hyaline spores. Environmental stress drives this quantity‐quality tradeoff; stressed species invest energy in melanin‐reinforced, mechanically superior thick‐walled, super‐hydrophobic spores, while ...
Atul Agrawal, Steven E. Naleway
wiley   +1 more source

Phylogenetic Comparative Assembly [PDF]

open access: yes, 2009
Husemann P, Stoye J. Phylogenetic Comparative Assembly. Algorithms for Molecular Biology. 2010;5(1): 3.BACKGROUND:Recent high throughput sequencing technologies are capable of generating a huge amount of data for bacterial genome sequencing projects ...
Stoye Jens   +5 more
core   +1 more source

A Pentaradial and Bilateral Combined Photoreception System in the Sea Cucumber is Mediated by a Blue Light‐Sensitive R‐Opsin

open access: yesAdvanced Science, EarlyView.
The sea cucumber Holothuria leucospilota detects blue and adjacent wavelengths of light via an r‐opsin with a maximum absorption at 459 nm. In the oral tentacles, papillae, and tube feet, distinct light‐sensing structures with specialized morphologies are formed, constituting a unique pentaradial and bilateral combined photoreception system.
Jiasheng Huang   +20 more
wiley   +1 more source

Gonadotropin‐Inhibitory Hormone (GnIH) and Its Receptor GPR147 Mediates Acute Stress‐Induced Activation of the Locus Coeruleus‐SAM Axis

open access: yesAdvanced Science, EarlyView.
ABSTRACT Gonadotropin‐inhibitory hormone (GnIH, also known as RFamide‐related peptide‐3, RFRP‐3) is a hypothalamic neuropeptide that regulates vertebrate reproduction via its receptor GPR147. Although GnIH is known to mediate stress‐induced reproductive suppression, its role in broader stress responses remains unclear.
Jiani Zhang   +18 more
wiley   +1 more source

Complete mitochondrial genome of Palpita hypohomalia (Lepidoptera: Pyraloidea: Crambidae) and its phylogenetic implications

open access: yesEuropean Journal of Entomology, 2018
The complete mitochondrial genome of a pyraloid species, Palpita hypohomalia, was sequenced and analyzed. This mitochondrial genome is circular, 15,280 bp long, and includes 37 typical metazoan mitochondrial genes (13 protein-coding genes, two ribosomal ...
Mingsheng YANG   +4 more
doaj   +1 more source

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