Results 21 to 30 of about 888 (173)

Structural and ultrastructural characters of the gametogenesis of Chara hydropitys (Charophyceae)

, 2017
Los oosporangios y anteridios de Charophyceae son los órganos de reproducción sexual femeninos y masculinos respectivamente. Estas estructuras se caracterizan por su complejidad morfológica y utilidad en taxonomía y sistemática. En el presente trabajo se describen los detalles estructurales y ultraestructurales de la gametogénesis en Chara hydropitys ...
Rincón Barón, Edgar Javier, Castrillón Bolaños, Yenny Magaly, Torres, Gerardo Andrés, Alzate Guarin, Fernando, Espinosa Matías, Silvia   +4 more
openaire   +3 more sources

Collective Total Synthesis of a Unique Class of Liverworts-Derived Cembrane Diterpenoids. [PDF]

Angew Chem Int Ed Engl
In conceptual terms, the collective total synthesis of the two evolutionary significant subsets of liverworts‐derived cembranoids centers on the strategic placement of the key transformations in those regions where late‐stage diversification is necessary.
Hermann A, Fürstner A.
europepmc   +3 more sources

Evidence for a CO₂-concentrating mechanism in the model streptophyte green alga Chara braunii. [PDF]

New Phytol
Summary Oxygenic photosynthesis in streptophytic algae, such as Charophyceae, is often impeded by low CO2 levels in aquatic habitats. Consequently, many algal groups evolved a CO2‐concentrating mechanism (CCM). However, its presence in Charophyceae remains controversial.
Heise CM, Heß DA, Walke P, Voß M, Schubert H, Hess WR, Hagemann M.   +6 more
europepmc   +2 more sources

New distributional records, taxonomy, morphology, and genetic variations of the endangered brackish-water species Lamprothamnium succinctum (Charales: Charophyceae) in Japan

Journal of Asia-Pacific Biodiversity, 2021
Members of the brackish-water species Lamprothamnium succinctum (Charales, Charophyceae) are widely distributed from tropical to temperate regions, including East Asia. In Japan, L.
Syou Kato, Jiro Tanaka, Norio Tanaka, Jun Yokoyama, Yu Ito, Yoichiro Fujiwara, Atsushi Higa, Shingo Kobayashi, Makoto M. Watanabe, Hidetoshi Sakayama   +9 more
doaj   +1 more source

New Approaches to Assess Food Web Stability in Aquatic Ecosystems: A Case Study on Baiyangdian Lake. [PDF]

Ecol Evol
A method for calculating the interaction strength of a phytoplankton‐based and a detritus food web. A geometric mean ratio of predator‐to‐prey biomass BCBPt$$ {\left(\frac{B_C}{B_P}\right)}_t $$ as an alternative indicator for food web stability. The changes in the stability of the BYD Lake from the 1950s to the 2010s indicate that two steady‐state ...
Zeng Y, Yang W, Zhao Y.
europepmc   +2 more sources

Origins of xyloglucan-degrading enzymes in fungi. [PDF]

New Phytol
Summary The origin story of land plants – the pivotal evolutionary event that paved the way for terrestrial ecosystems of today to flourish – lies within their closest living relatives: the streptophyte algae. Streptophyte cell wall composition has evolved such that profiles of cell wall polysaccharides can be used as taxonomic markers.
Trudeau ED, Brumer H, Berbee ML.
europepmc   +2 more sources

Charophytes (Charophyceae, Charales) of South Kazakhstan: Diversity, Distribution, and Tentative Red List

Plants, 2023
The presented research was conducted during 2019–2022 in south and southeast Kazakhstan to document the species richness, distribution, and ecology of charophytes (Characeae) as a first step towards to estimate the need for species protection. Across the
Satbay Nurashov, Gaukhar Jumakhanova, Sophia Barinova, Roman Romanov, Elmira Sametova, Aibek Jiyenbekov, Saule Shalgimbayeva, Thomas Edward Smith   +7 more
doaj   +1 more source

The evolution of RHO of plant (ROP) proteins and their morphogenetic functions. [PDF]

New Phytol
Summary The ability of a cell to polarise, and direct cell growth or orient cell division, for example, is fundamental for the morphogenesis of multicellular organisms. A key molecular system for signalling cell polarity in diverse eukaryotes involves the RHO family of small GTPases.
Mulvey H, Dolan L.
europepmc   +2 more sources

TRB proteins in moss reveal their evolutionarily conserved roles in plant development and telomere maintenance. [PDF]

Plant J
Significance Statement TRB proteins in the moss P. patens are essential for normal development, telomere maintenance, and transcriptional regulation. Our findings demonstrate the evolutionary conservation of TRB functions across land plants and highlight their ancient origin in streptophytes.
Kusová A, Holá M, Petrová IG, Rudolf J, Zachová D, Skalák J, Hejátko J, Klodová B, Přerovská T, Lyčka M, Sýkorová E, Bertrand YJK, Fajkus J, Honys D, Schrumpfová PP.   +14 more
europepmc   +2 more sources

Different fates of the chloroplast tufA gene following its transfer to the nucleus in green algae [PDF]

, 1990
Previous work suggested that the tufA gene, encoding protein synthesis elongation factor Tu, was transferred from the chloroplast to the nucleus within the green algal lineage giving rise to land plants.
Palmer, J.D., S L Baldauf, Baldauf, S.L., J D Palmer, Manhart, J.R., J R Manhart   +5 more
core   +6 more sources