Results 31 to 40 of about 4,969 (220)
Esclerose Lateral Amiotrófica em uma índia brasileira Xikrin-Kayapó [PDF]
, 2008 Federal University of São Paulo Department of Neurology and NeurosurgeryFederal University of São Paulo Service of EndocrinologyUNIFESP, Department of Neurology and NeurosurgeryUNIFESP, Service of ...
Felício, André Carvalho +3 more
core +2 more sources
Molecular Plant-Microbe Interactions, 2010 The nitrogen-fixing cyanobacterium Nostoc is a commonly occurring terrestrial and aquatic cyanobacterium often found in symbiosis with a wide range of plant, algal, and fungal species.
Michelle M. Gehringer +5 more
doaj +1 more source
IDENTIFICATION OF SEX IN ZAMIA INERMIS USING ISSR MARKERS [PDF]
Journal of Plant Development, 2021 Zamia inermis is a dioecious cycad endemic to the State of Veracruz that is on the risk extinction. Sex-specific markers are important in understanding the mechanism of sex determination.
Lourdes Georgina IGLESIAS-ANDREU +1 more
doaj +1 more source
Eobowenia gen. nov. from the early Cretaceous of Patagonia: indication for an early divergence of Bowenia? [PDF]
, 2017 Background: Even if they are considered the quintessential "living fossils", the fossil record of the extant genera of the Cycadales is quite poor, and only extends as far back as the Cenozoic.
Coiro, Mario, Pott, Christian
core +2 more sources
Horticulturae, 2019 Cycas micronesica K.D. Hill trees on the island of Yap were used to determine the influence of position along the leaf rachis on macro- and micro-nutrient concentrations and how leaf age affected the results.
Thomas E. Marler +1 more
doaj +1 more source
Cycads from the Triassic of Antarctica: Permineralized Cycad Leaves [PDF]
International Journal of Plant Sciences, 2007 Permineralized cycad petioles and/or rachides with associated pinnae are described from two Triassic localities in the Queen Alexandria Range, central Transantarctic Mountains, Antarctica. Petiole‐rachides display an inverted‐omega‐shaped arrangement of vascular bundles typical of most genera of extant Cycadales and exarch primary xylem that link them ...
Hermsen, Elizabeth +3 more
openaire +2 more sources
Does Size Matter? Atmospheric CO2 May Be a Stronger Driver of Stomatal Closing Rate Than Stomatal Size in Taxa That Diversified under Low CO2 [PDF]
, 2016 One strategy for plants to optimize stomatal function is to open and close their stomata quickly in response to environmental signals. It is generally assumed that small stomata can alter aperture faster than large stomata.
Aasamaa +63 more
core +4 more sources
Elemental Profiles in Cycas micronesica Stems
Plants, 2018 Essential nutrients and metals have been quantified in stems of many tree species to understand the role of stems as storage and source organs. Little is known about stored stem resources of cycad tree species. Cycas micronesica tissue was collected from
Thomas E. Marler
doaj +1 more source
BMAA in cycad-feeding Lepidoptera: defensive sequestration or bioaccumulation?
Frontiers in Ecology and Evolution, 2023 Many herbivorous Lepidoptera accumulate plant toxins within their own tissues as a defensive strategy. Pioneering research in this area was conducted by Miriam Rothschild and Deane Bowers, who showed that the cycad-feeding butterfly Eumaeus atala ...
Melissa R. L. Whitaker +5 more
doaj +1 more source
Fresh and Dry Weight Relations Are Predictors of Cycas micronesica Seed Age
Horticulturae, 2020 Cycas micronesica is a foundation species in several Micronesian islands and its seeds have been a historical source of starch for the island residents.
Thomas E. Marler, Christopher A. Shaw
doaj +1 more source