Results 41 to 50 of about 203,784 (224)
Reciprocating thermochemical mediator of pre-biotic polymer decomposition on mineral surfaces [PDF]
J. R. Soc. Interface 22: 20240492 (2025)A continuing frustration for origin of life scientists is that abiotic and, by extension, pre-biotic attempts to develop self-sustaining, evolving molecular systems tend to produce more dead-end substances than macromolecular products with the necessary potential for biostructure and function -- the so-called `tar problem'. Nevertheless primordial life
arxiv +1 more source
The sieve-element endoplasmic reticulum: A focal point of phytoplasma-host plant interaction?
Frontiers in Microbiology, 2023 The rough endoplasmic reticulum (r-ER) is of paramount importance for adaptive responses to biotic stresses due to an increased demand for de novo synthesis of immunity-related proteins and signaling components.
Rita Musetti +6 more
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Redox Homeostasis via Gene Families of Ascorbate-Glutathione Pathway
Frontiers in Environmental Science, 2015 The imposition of environmental stresses on plants brings about disturbance in their metabolism thereby negatively affecting their growth and development and leading to reduction in the productivity. One of the manifestations of abiotic and biotic stress
Prachi ePandey +5 more
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Effective Biotic Elicitors for Augmentation of Secondary Metabolite Production in Medicinal Plants
AgriculturePlants are an essential component of our daily diet, and their nutritional value has been thoroughly studied for many years. The ability of plants to adapt to changing environmental conditions through signaling systems is an essential component of their ...
Divya Jain +5 more
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On the abundance of extraterrestrial life after the Kepler mission [PDF]
International Journal of Astrobiology, 2015, volume 14, issue 03,
pp. 511-516, 2014 The data recently accumulated by the Kepler mission have demonstrated that small planets are quite common and that a significant fraction of all stars may have an Earth-like planet within their Habitable Zone. These results are combined with a Drake-equation formalism to derive the space density of biotic planets as a function of the relatively modest ...
arxiv +1 more source
Effects of Plant-Soil Feedback on Switchgrass Productivity Related to Microbial Origin
Agronomy, 2020 A great deal of effort has been applied to maximizing switchgrass (Panicum virgatum L.) production for bioenergy by leveraging existing local adaptation to climate and via nutrient management in this perennial grass crop. However, the biotic component of
James R. Kiniry +5 more
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A case for biotic morphogenesis of coniform stromatolites [PDF]
Physica A 337 (2004) 319-326, 2004 Mathematical models have recently been used to cast doubt on the biotic origin of stromatolites. Here by contrast we propose a biotic model for stromatolite morphogenesis which considers the relationship between upward growth of a phototropic or phototactic biofilm ($v$) and mineral accretion normal to the surface ($\lambda$).
arxiv +1 more source
Media Konservasi, 2016 Baluran National Park is a Nature Conserved Area which is one of the habitat of javan langur, however, its data is very limited. The objectives of the research is to study population and its key habitat component. The observation had been done in March-
Wahyu Indah Astriani +2 more
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A ubiquitous ~62 Myr periodic fluctuation superimposed on general trends in fossil biodiversity: II, Evolutionary dynamics associated with periodic fluctuation in marine diversity [PDF]
Paleobiology 37:383-408,2011, 2010 We investigate evolutionary dynamics related to periodicity fossil biodiversity. Coherent periodic fluctuation in origination/extinction of marine genera that survive <45 million years is the source of an observed ~62 million year periodicity analyzed in Paper I. We also show that the evolutionary dynamics of "long-lived" genera (those that survive >45
arxiv +1 more source
Hacia una síntesis biogeográfica de México Toward a synthesis of Mexican biogeography
Revista Mexicana de Biodiversidad, 2005 El reconocimiento de componentes bióticos constituye una primera etapa hacia una teoría biogeográfica sintética. En México podemos caracterizar 3 componentes bióticos principales, cada uno con una combinación diferente de elementos bióticos.
Juan J. Morrone
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