نتایج جستجو برای: rare plant

تعداد نتایج: 631143  

2009
Mark van Kleunen Markus Fischer

1. During the last centuries many alien species have established and spread in new regions, where some of them cause large ecological and economic problems. As one of the main explanations of the spread of alien species, the enemy-release hypothesis is widely accepted and frequently serves as justification for biological control. 2. We used a global fungus–plant host distribution data set for 1...

Mahdi Arzanlou,

Background: Members of this genus Aureobasidium are ubiquitous microorganisms which can be isolated from wide ranges of substrates such as plant materials (phyllosphere, plant debris, bark, roots, fruits and wood), soil, dead wood, air, and as rare etiologic agent of pheohyphomycosis, keratomycosis, septicemia, peritoneal sepsis, and dermatological infections in human. Very little is known on t...

Journal: :Journal of experimental botany 2005
Shiming Ding Tao Liang Chaosheng Zhang Juncai Yan Zili Zhang

Previous studies on rare earth element (REE) bioaccumulation have focused on their accumulation rate and fractionation, but the processes involved remain unclear. In this study, the accumulation and fractionation of REEs in wheat (Triticum aestivum L.) were investigated using solution culture with exogenous mixed REEs. A decrease in REE contents was observed from the roots to the tops of wheat....

2016
Asrul Akmal Shafie Nathorn Chaiyakunapruk Azuwana Supian Jeremy Lim Matt Zafra Mohamed Azmi Ahmad Hassali

BACKGROUND Rare diseases, also referred to as orphan diseases, are characterised by their low prevalence with majority of them are chronically debilitating and life threatening. Given the low prevalence and the widely dispersed but very small patient base for each disease, there may often be a disproportion in the availability of treatments and resources to manage patients, spur research and tr...

Journal: :Plant physiology 1970
C Sloger B E Caldwell

This paper describes work to determine whether soybean cultivars differ in their physiological response to applied abscisic acid. ABA is a naturally occurring plant hormone that affects a number of physiological processes, including leaf abscission, leaf senescence, seed germination, bud dormancy, flowering, and tuberization (4). Usually, ABA is applied in various concentrations to whole plants...

Journal: :Ecology letters 2009
Koen J F Verhoeven Arjen Biere Jeffrey A Harvey Wim H van der Putten

Introduced exotic species encounter a wide range of non-coevolved enemies and competitors in their new range. Evolutionary novelty is a key aspect of these interactions, but who benefits from novelty: the exotic species or their new antagonists? Paradoxically, the novelty argument has been used to explain both the release from and the suppression by natural enemies. We argue that this paradox c...

2016
E. S. Challaraj Emmanuel S. Maruthamuthu

Five soil-transmitted pathogenic fungi (Aspergillus niger) were isolated and selected to investigate the effect of Rare earth elements on their disease causing ability. The present study reveals the response of leguminous plant (Arachis hypogaea L.) to monazite soil containing Rare earth elements. A significant increase in plant biomass, total chlorophyll content and stress resistant product (p...

2007
NADA HULINA

Hulina, N.: Rare, endangered or vulnerable plants and neophytes in a drainage system in Croatia, Nat. Croat., Vol. 7, No. 4., 279–289, 1998, Zagreb In an extensive network of field and lateral drain channels, in the area of Turopolje and ^rnec Polje, seven locally and generally rare, endangered or vulnerable plants were noted. These are: Riccia fluitans L., Marsilea quadrifolia L., Utricularia ...

2017
Timothy Schowalter Jarmo K. Holopainen Timothy A. Martin

Old-growth forests have become rare in North America but provide habitat for unique assemblages of species that often are rare in younger forests. Insects and related arthropods reach their highest diversity in old-growth forests because of their stable moderate temperature and relative humidity and the rich variety of resources represented by high plant species richness and structural complexi...

2015
Paolo Fasciani Loretta Pace

Climate change influences the distribution of species, causing the displacement of distribution areas, both in altitude and latitude. The potentially most climate change-susceptible taxa are those of mountain peaks, with limited distribution areas, such as rare or endemic species. In this paper, we deepened the study of Androsace mathildae Levier, a plant that lives in Central Italy over 2500 m...

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