Results 71 to 80 of about 26,052 (243)

A Hanks‐type bacterial kinase, PknS, directly phosphorylates the alternative sigma factor EcfK to promote resistance to protist predation

open access: yesThe FEBS Journal, EarlyView.
The Xanthomonas citri Hanks‐type kinase PknS autophosphorylates and directly phosphorylates the alternative sigma factor EcfK at five residues. Besides the conserved residue T51 in the σ2 domain, phosphorylation of a residue in the linker between σ2 and σ4 is critical for EcfK activation by promoting its interaction with a positively charged pocket in ...
Lídia dos Passos Lima   +12 more
wiley   +1 more source

Nitrogen transfer from nitrogen-fixing lichen to co-occurring epiphytes in the subtropical forests of Yunnan

open access: yesGuangxi Zhiwu
Acquiring sufficient nitrogen(N)to meet requirements for growth is a major challenge for epiphytes living in nutrient-poor canopy habitats. Cyanolichens(lichens that contain cyanobacterial symbionts)can function as the primary participants in biological ...
SUN Wei1,2, PU Xiaoyan1,3, HU Xiaowen4, LU Zhiyun1,4, LI Su1*
doaj   +1 more source

The exploration of the East African bryoflora [PDF]

open access: yes, 1990
During the past 5 years intensive bryological explorations were carried out in Tanzania with special emphasize on hitherto undercollected areas (e.g. Nguru mountains, Mafia Island, unknown accesses of Mount Kilimanjaro and Meru) and on special habitats ...
Pócs, Tamás
core  

Preliminary Canopy Removal Experiments in Algal Dominated Communities Low on the Shore and in the Shallow Subtidal on the Isle of Man [PDF]

open access: yes, 1985
The algal dominated communities immediately above and below the low-water spring level on a moderately exposed Manx shore were investigated by canopy removal experiments. Fucus serratus, Laminaria digitata and L. hyperborea were removed.
Dayton P. K.   +5 more
core   +1 more source

Effect of Endophytic Fungi on Thrips tabaci Development and Population Dynamics

open access: yesJournal of Applied Entomology, EarlyView.
ABSTRACT Endophytic fungi are promising biocontrol agents because they colonise healthy plant tissues asymptomatically while inducing systemic resistance that negatively affects herbivorous insects. We investigated whether treatments with the endophytes Trichoderma harzianum and Beauveria bassiana in two onion cultivars (Allium cepa L.; Sturon and Red ...
Ngoc Anh Vu   +2 more
wiley   +1 more source

Lichens of fruit trees in the selected locations in Podlaskie Voivodeship [North-Eastern Poland]

open access: yesEnvironmental Protection and Natural Resources, 2017
The aim of this paper is to present the diversity of the lichen species on fruit trees (Malus sp., Pyrus sp., Prunus sp. and Cerasus sp.) growing in orchards in selected villages and towns in the Podlaskie Voivodeship.
Matwiejuk Anna
doaj   +1 more source

Novel Hydrurus species (Chrysophyceae) and their adaptations to high‐altitude European and Arctic snowfields

open access: yesJournal of Phycology, EarlyView.
Abstract Colored snow caused by green algae (Chlorophyceae) is well known, but melting snowpacks can also harbor golden‐brown blooms consisting of Chrysophyceae. We collected 14 samples of cryoflora in the Austrian and Swiss Alps, the High Tatras in Slovakia, and in Arctic Svalbard. Eight laboratory unicellular flagellated strains were established from
Lenka Procházková   +6 more
wiley   +1 more source

Eelgrass in Estuarine Research Reserves Along the East Coast, USA [PDF]

open access: yes, 1993
Eelgrass, Zostera marina L., is a submerged marine vascular plant that provides the basic structure of an extensive and important estuarine and coastal ecosystem.
Burdick, David M   +3 more
core   +1 more source

Are integrative systematic tools efficient toward unraveling species diversity with the genus Jania (Corallinaceae, Rhodophyta)?

open access: yesJournal of Phycology, EarlyView.
Abstract The articulated genus Jania currently comprises 54 accepted species, making it the fourth most speciose genus among corallines, following Lithophyllum, Amphiroa, and Lithothamnion. Unlike these other genera, Jania is relatively easy to identify at a generic rank. However, morpho‐anatomical characters are insufficiently discriminant for species
Clio Maridakis   +5 more
wiley   +1 more source

Bryophyte diversity patterns in flooded and tierra firme forests in the Araracuara Region, Colombian Amazonia [PDF]

open access: yes, 2004
We investigated patterns of bryophyte species richness and composition in two forest types of Colombian Amazonia, non-flooded tierra firme forest and floodplain forest of the Caquetá River.
Alvarez, Esteban   +2 more
core  

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