910 research outputs found
Microbiome research at FiBL 2024
No full textHow can microbiome research promote organic agriculture? Join this insightful session to explore how microbiomes are studied at FiBL to increase agroecosystem health. The session begins with a brief introduction by Valentin Gfeller, who will explain the microbiome's role in soil fertility, plant health, and disease resilience - key elements of sustainable farming.
Three expert speakers will then present their work across different agricultural fields:
•Anja Logo from the Crop Sciences Department will dive into the use of compost to combat soil-borne diseases, focusing on the bacterial and fungal communities that enhance compost's disease-suppressing properties.
•Geoffrey Mesbahi from Livestock Sciences will discuss how the calf microbiome is influenced by breed and diet, and its impact on animal health, productivity, and methane emissions in grass-based fattening systems.
•Natacha Bodenhausen from Soil Sciences will share her insights into arbuscular mycorrhizal fungi (AMF) and the factors that predict the success of AMF inoculation in the field, improving plant-fungal relationships for sustainable agriculture.
The session will conclude with a Q&A, where attendees can engage directly with the experts. This session is perfect for anyone interested in how microbiome research is applied to make farming systems more resilient and productive
Alf Nilsen-Børsskog — The Author Chosen by the Language
Get PDFThis article discusses Alf Nilsen-Børsskog’s four-volume series of novels Elämän jatko [Continuation of life, 2004–2015], seen as the first literary works treating the Kven culture from a native perspective. Nilsen-Børsskog’s novels are analysed as constituting a “counterstory”, a term coined in the postcolonial cultural research paradigm to refer to self-representation. The Kvens have been considered a national minority in Norway since 1999, and their language has been an official minority language since 2005. The present author scrutinizes how Nilsen-Børsskog’s work differs from previous literary descriptions of this minority, often marked by the frequent use of stereotypes of the Kven language and culture
LIBS and LA-SD-OES Analysis of Minor and Trace Elements in Steel Samples
No full textAuthor Valentin Ehrentraut, BScMasterarbeit Universität Linz 2022Arbeit nach Ablauf der Sperre auf den öffentlichen PCs in den Bibliotheken der JKU+Medizin abrufba
Root-exuded benzoxazinoids can alleviate negative plant–soil feedbacks
Get PDF- Plants can suppress the growth of other plants by modifying soil properties. These negative plant–soil feedbacks are often species-specific, suggesting that some plants possess resistance strategies. However, the underlying mechanisms remain largely unknown.
- Here, we investigated whether benzoxazinoids, a class of dominant secondary metabolites that are exuded into the soil by maize and other cereals, allow maize plants to cope with plant–soil feedbacks.
- We find that three out of five tested crop species reduce maize (Zea mays L.) performance via negative plant–soil feedbacks relative to the mean across species. This effect is partially alleviated by the capacity of maize plants to produce benzoxazinoids. Soil complementation with purified benzoxazinoids restores the protective effect for benzoxazinoid-deficient mutants. Sterilization and reinoculation experiments suggest that benzoxazinoid-mediated protection acts via changes in soil biota. Substantial variation of the protective effect between experiments and soil types illustrates context dependency.
- In conclusion, exuded plant secondary metabolites allow plants to cope with plant–soil feedbacks. These findings expand the functional repertoire of plant secondary metabolites and reveal a mechanism by which plants can resist negative effects of soil feedbacks. The uncovered phenomenon may represent a promising avenue to stabilize plant performance in crop rotations
Root volatiles in plant-plant interactions II: Root terpenes from Centaurea stoebe modify Taraxacum officinale root chemistry and root herbivore growth
Get PDFVolatile organic compounds (VOCs) emitted by plant roots can influence the germination and growth of neighboring plants. However, little is known about the effects of root VOCs on plant-herbivore interactions. The spotted knapeed (Centaurea stoebe) constitutively releases high amounts of sesquiterpenes into the rhizosphere. Here, we examine the impact of C. stoebe root VOCs on primary and secondary metabolites of sympatric Taraxacum officinale plants and the resulting plant-mediated effects on a generalist root herbivore, the white grub Melolontha melolontha. We show that exposure of T. officinale to C. stoebe root VOCs does not affect the accumulation of defensive secondary metabolites, but modulates carbohydrate and total protein levels in T. officinale roots. Furthermore, VOC exposure increases M. melolontha growth on T. officinale plants. Exposure of T. officinale to a major C. stoebe root VOC, the sesquiterpene (E)-β-caryophyllene, partially mimics the effect of the full root VOC blend on M. melolontha growth. Thus, releasing root VOCs can modify plant-herbivore interactions of neighboring plants. The release of VOCs to increase the susceptibility of other plants may be a form of plant offense
Root volatiles in plant-plant interactions II: Root volatiles alter root chemistry and plant-herbivore interactions of neighboring plants
Get PDFVolatile organic compounds (VOCs) emitted by plant roots can influence the germination and growth of neighboring plants. However, little is known about the effects of root VOCs on plant‐herbivore interactions of neighboring plants. The spotted knapweed (Centaurea stoebe) constitutively releases high amounts of sesquiterpenes into the rhizosphere. Here, we examine the impact of C. stoebe root VOCs on primary and secondary metabolites of sympatric Taraxacum officinale plants and the resulting plant‐mediated effects on a generalist root herbivore, the white grub Melolontha melolontha. We show that exposure of T. officinale to C. stoebe root VOCs does not affect the accumulation of defensive secondary metabolites, but modulates carbohydrate and total protein levels in T. officinale roots. Furthermore, VOC exposure increases M. melolontha growth on T. officinale plants. Exposure of T. officinale to a major C. stoebe root VOC, the sesquiterpene (E)‐β‐caryophyllene, partially mimics the effect of the full root VOC blend on M. melolontha growth. Thus, releasing root VOCs can modify plant‐herbivore interactions of neighboring plants. The release of VOCs to increase the susceptibility of other plants may be a form of plant offense
Johann Siegmund Valentin Popowitsch (Janez Žiga Valentin Popovič), Vocabula Austriaca et Stiriaca 1-2 (Frankfurt am Main 2004)
No full textThe Austrian dictionary composed by the Slovenian scho-lar Janez Žiga Valentin Popovič (1705-1774) in the third quarter of the 18th century was only published in 2004, and edited by Richard Reutner, who wrote an extensive introduction to it. The dictionary comprises many language-geographical data for the German language, excellent explanations and many comparisons with much information provided regarding Popovic's mother tongue. The author broad horizon is admirable, especially with regard to the German language area and the linguistic literature of that time.Avstrijski slovar, ki ga je v tretji četrtini 18. stoletja sestavil slovenski učenjak Janez Žiga Valentin Popovič (1705-1774), je izšel šele leta 2004 v uredništvu Richarda Reutnerja, kije k njemu napisal obsežen uvod. Slovar vsebuje mnogo jezikovnogeografskih podatkov za nemščino, odlične razlage in marsikaj primerjalnega, veliko pa se najde tudi v zvezi s Popovičevo materinščino. Občudovanja vredna je avtorjeva razgledanost predvsem po nemškem jezikoslovnem prostoru in po takratni jezikoslovni literaturi
Valentin N. Volóchinov: um filósofo da ciência da linguagem
Get PDFThis text address the work of Russian scholar Valentin N. Vološinov, author of the book Marxism and the Philosophy of Language. The objective is to demonstrate a set of characteristics that place Vološinov as a participant in the critique of science movement, which had its epicenter in Germany, between the years 1840 and 1900. To this end, in addition to a general reflection, which recovers the meaning of the term “criticism” most present in the academic environment of the time, this text considers two points of the much mentioned – and, apparently, somewhat misunderstood – opposition of the Russian thinker to the linguistics of Ferdinand de Saussure, as this linguistics is presented in the Course in General Linguistics. Finally, by way of provocation, this text outlines a few words about the proximity between the epistemological works of Valentin N. Vološinov and Wilhelm Dilthey.Este texto aborda la obra del estudioso ruso Valentin N. Voloshinov, autor de la obra Marxismo y filosofía del lenguaje. El objetivo es demostrar un conjunto de características que sitúan a Voloshinov como participante del movimiento de crítica científica, que tuvo su epicentro en Alemania, entre los años 1840 y 1900. Para ello, además de una reflexión general, que recupera el significado del término “crítica” más presente en el ambiente académico de la época, se consideran dos puntos de la tan mencionada –y, aparentemente, algo incomprendida– oposición del pensador ruso a la lingüística de Ferdinand de Saussure, tal como se presenta esta última en el curso de lingüística general. Al final, a modo de provocación, se esbozan algunas palabras sobre la proximidad entre las obras epistemológicas de Valentin N. Voloshinov y Wilhelm Dilthey.O presente texto aborda o trabalho do estudioso russo Valentin N. Volóchinov, autor da obra Marxismo e filosofia da linguagem. O objetivo é demonstrar um conjunto de características que situam Volóchinov como um partícipe do movimento de crítica das ciências, o qual teve seu epicentro na Alemanha, entre os anos 1840 e 1900. Para isso, além de uma reflexão geral, que recupera a acepção do termo “crítica” mais presente no ambiente acadêmico da época, são considerados dois pontos da muito mencionada – e, ao que tudo indica, um tanto mal compreendido – oposição do pensador russo à linguística de Ferdinand de Saussure, tal como essa última é apresentada no Curso de linguística geral. Ao fim, a título de provocação, são esboçadas algumas palavras a respeito da proximidade entre os trabalhos epistemológicos de Valentin N. Volóchinov e Wilhelm Dilthey
Shifting patterns of fruit production in tropical forests with negative outnumbering positive trends
No full textAnalysis related to Shifting patterns of fruit production in tropical
forests with negative outnumbering positive trends from Hacket-Pain et al.
Code generated by Journé Valentin.
For details please check the README (Wiki) and the main study
corresponding author: Andrew Hacket-Pain; [email protected]
Money for Maria by Valentin Rasputin: translation and analysis
No full textO objetivo desta pesquisa é apresentar e analisar a primeira novela do autor russo soviético Valentin Raspútin, Dinheiro para Maria, publicada originalmente em 1967. A tradução em português do objeto de estudo é acompanhada de notas contextuais, tanto históricas quanto tradutórias. Para aprofundarmos mais o assunto, é apresentado um breve histórico da coletivização das terras na URSS e as condições sociais e artísticas que permitiram o florescimento da \"prosa de aldeia\". Além disso, são apontados alguns dados biográficos do autor e alguns aspectos de sua obra que o enquadram nesse movimento artístico. Finalmente, são analisadas as diversas camadas cronotópicas da novela e seu caráter dialógico.The aim of this research is to present and analyze the first novel by Soviet Russian author Valentin Rasputin, Money for Maria, originally published in 1967. The Portuguese translation of the object of study is accompanied by contextual notes, both historical and translational. To further explore the subject, a brief history of the collectivization of land in the USSR and the social and artistic conditions that allowed the flourishing of \"village prose\" is presented. In addition, some biographical data of the author and some aspects of his work that fit him in this artistic movement are pointed out. Finally, the various chronotopic layers of the novel and its dialogical character are analyzed
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