Results 51 to 60 of about 4,229 (203)

A morphogenetic study of sporangia-partitioning complex

Acta Societatis Botanicorum Poloniae, 2015
The bilobed sporangia in the species of Anthoceros, Isoetes and Ophioglossum are described. The morphogenetic importance of the process of "fission" in evolutionary development of sporangia in pteridophytes is discussed.
H. K. Goswami
doaj   +1 more source

Chemotaxis of Bracken Spermatozoids : The Role of Bimalate Ions [PDF]

, 1958
1. Bracken spermatozoids are chemotactically attracted by malic acid salts and in a pH gradient aggregate between pH 3.5 and 5.6. 2. This response to pH occurs only when the sperm suspension contains malate. 3. At higher pH's, the response to an H+
Brokaw, C. J.
core   +1 more source

The role of Alpine botanical gardens in integrating germplasm bank collections and mission

PLANTS, PEOPLE, PLANET, Volume 8, Issue 2, Page 680-692, March 2026.
This study underscores the vital role of Alpine botanical gardens (ABGs) in safeguarding Europe's alpine biodiversity amid climate change and habitat loss. By acting as living laboratories and reservoirs of plant genetic resources, ABGs bridge ex situ and in situ conservation, supporting ecosystem resilience and informing restoration strategies.
Marco Canella, Núria Beltran‐Sanz, Andreas Gröger, Špela Pungaršek, Maxime Rome, Sara Natale, Costantino Bonomi, Helen Catherine Wiesinger, Andrea Mainetti, Andrea Scapin, Marco Valecic, Simone Sensato, Monica Sommacal, Elena Piutti, Fabrizio Bottelli, Maria Teresa Pizzato, Jasmin Senn, Anne‐Catherine Monod, Nicoletta La Rocca, Francesco Dal Grande   +19 more
wiley   +1 more source

Foliar diagnostic characters in Iberian species of Isoetes L. (Isoetaceae, Pteridophyta)

Anales del Jardín Botánico de Madrid, 2003
This is a comparative study of foliar morphology of the species of Isoetes L. growing in the Iberian Península. The taxa included are /. durieui and /. histrix (terrestrial), /. setaceum, and /. velatum subsp. Velatum (amphibious), and /.
Carmen Prada, Cristina H. Rolleri
doaj   +1 more source

Biogeochemical ecology of six species of Sphagnum in Costa Rica [PDF]

, 1992
There is very little information on the biogeochemical ecology of Sphagnum species in tropical regions. The majority of the ecological information on Sphagnum species in the tropics consists of general habitat information and pH values that are reported ...
McQueen, Cyrus B., Wolfe, John
core  

Divergent Transcriptional Architectures Beyond Core CAM Genes in Facultative and Constitutive CAM Species in Tillandsia L.

Molecular Ecology, Volume 35, Issue 6, March 2026.
ABSTRACT Crassulacean acid metabolism (CAM) is a water‐efficient photosynthetic strategy involving a coordinated suite of complex traits including metabolic, anatomical and regulatory aspects that shift across the diel cycle. While CAM has evolved repeatedly in land plants, the evolutionary routes enabling this convergence remain elusive.
Clara Groot‐Crego, Sarah Saadain, Marylaure De La Harpe, Jaqueline Hess, Michael H. J. Barfuss, Walter Till, Gert Bachmann, Wolfram Weckwerth, Christian Lexer, Ovidiu Paun   +9 more
wiley   +1 more source

Isoetes candelariensis, a new species of Isoetaceae (Lycopodiidae) from Argentina

Anais da Academia Brasileira de Ciências
Isoetes candelariensis is a new species of Isoetaceae from Misiones, Argentina. This species is ephemeral, and grows on basaltic bedrock outcrop pools, in Urutau Reserve from Candelaria Department.
CARMEN C. MACLUF, GONZALO J. MARQUEZ, HÉCTOR A. KELLER, MARCELA A. QUETGLAS   +3 more
doaj   +1 more source

Phylogenomics indicates the "living fossil" Isoetes diversified in the Cenozoic.

PLoS ONE, 2020
The fossil record provides an invaluable insight into the temporal origins of extant lineages of organisms. However, establishing the relationships between fossils and extant lineages can be difficult in groups with low rates of morphological change over
Daniel Wood, Guillaume Besnard, David J Beerling, Colin P Osborne, Pascal-Antoine Christin   +4 more
doaj   +1 more source

A Last Glacial Maximum Pollen Record from Bodmin Moor Showing a Possible Cryptic Northern Refugium in Southwest England [PDF]

, 2013
Reproduced with permission of the publisher. The definitive version is available at www3.interscience.wiley.com. Copyright © 2009 John Wiley & Sons, LtdA late Devensian palynological record is presented from Dozmary Pool (Bodmin Moor, southwest England),
Charman, Dan J., Kelly, Ann, Newnham, Rewis, M   +2 more
core   +1 more source

Starving for oxygen: the effect of hypoxia on seed germination and secondary dormancy induction in Mediterranean temporary ponds plant species

Plant Biology, Volume 28, Issue 2, Page 432-440, March 2026.
This study examined the germination adaptations to hypoxia of species along a plant zonation in Mediterranean temporary ponds, highlighting the key traits that support their survival and regeneration. Abstract Mediterranean temporary ponds (MTPs) are dynamic habitats where low levels of dissolved oxygen can significantly impact plant life.
M. Di Stefano, C. P. Dominguez, D. Batlla, G. D. Puglia, A. Cristaudo   +4 more
wiley   +1 more source