Results 41 to 50 of about 15,054 (266)

The role of ecotypic variation for plant facilitation in a metal-polluted system: Stress-intolerant target ecotypes are the best beneficiaries and stress-tolerant nurse ecotypes the best benefactors

open access: yesScience of The Total Environment, 2023
Disentangling competitive-response and -effect abilities has strongly improved our understanding of the role of competition for the diversity and composition of plant communities. Much less is known about the relative importance of facilitative-effect and -response abilities in harsh ecosystems. Here, we aim to fill this gap by simultaneously assessing
Nemer, David   +3 more
openaire   +3 more sources

Breeding switchgrass for reduced nitrogen demand

open access: yesGrassland Research, EarlyView.
Breeding has improved switchgrass biomass yield, but productivity is still heavily dependent on nitrogen fertilizer application. The genetic diversity needed to improve nitrogen use efficiency of switchgrass remains underused, mainly because of the slow and laborious breeding process, thus leaving the crop's high nitrogen demand as a major barrier to ...
Michael D. Casler, Prabin Bajgain
wiley   +1 more source

Contribution to the discussions on the origin of the cerrado biome: Brazilian savanna

open access: yesBrazilian Journal of Biology
Theories that attempt to explain the origin of the cerrado biome are mostly based on the isolated action of three major factors: climate, fire and soil. Another factor that has been mentioned is that of human interference.
MHO. Pinheiro, R. Monteiro
doaj   +1 more source

Genetic structure among morphotypes of the endangered Brazilian palm Euterpe edulis Mart (Arecaceae)

open access: yesEcology and Evolution, 2020
Euterpe edulis (Arecaceae) Mart has high ecological and economic importance providing food resources for more than 58 species of birds and 20 species of mammals, including humans. E.
Gislaine Mendes Coelho   +6 more
doaj   +1 more source

Changing Ecotypes of Dengue Virus 2 Serotype in Nigeria and the Emergence of Cosmopolitan and Asian I Lineages, 1966–2019

open access: yesVaccines, 2023
Dengue virus (DENV) is a leading mosquito-borne virus with a wide geographical spread and a major public health concern. DENV serotype 1 (DENV-1) and serotype 2 (DENV-2) were first reported in Africa in 1964 in Ibadan, Nigeria.
Bernard A. Onoja   +4 more
doaj   +1 more source

A Pan‐Cancer Single‐Cell Atlas of Bone Metastases Reveals Convergent Malignant Programs and Coordinated Immune Dysfunction

open access: yesiMetaMed, EarlyView.
A pan‐cancer atlas deciphers tumor‐induced reprogramming in bone metastases. Malignant evolution toward MYC/proliferation is a hallmark of bone metastases. Niche‐mediated immune dysfunction is characterized by immature pDCs, impaired antigen presentation and phagocytosis in TAMs, and exhausted T cells.
Yitong Pan   +4 more
wiley   +1 more source

Morphological and growth responses to water stress of two sub-populations of Bromus pictus from soils with contrasting water availability Respuestas morfológicas y de crecimiento al estrés hídrico de dos subpoblaciones de Bromus pictus provenientes de suelos con contrastante disponibilidad de agua

open access: yesRevista Chilena de Historia Natural, 2006
We studied morphological and growth responses to drought of two sub-populations of Bromus pictus from communities with soils with different water availability from the Patagonian steppe.
JOSÉ L ROTUNDO   +2 more
doaj  

Population Genomics Provides Novel Insights Into Evolutionary Relationships and Local Adaptation of Two Ecotypes Coilia nasus

open access: yesEcology and Evolution
Coilia nasus is an economically important fish species that exhibits two distinct life history strategies: an anadromous form, which migrates from seawater to freshwater to spawn, and a freshwater‐resident form that completes its entire life cycle in ...
Fengjiao Ma   +7 more
doaj   +1 more source

Fungal Endophytes Are Associated with Improved Salinity Responses Across Quinoa Ecotypes

open access: yesPlants
Soil salinity is a major constraint on global crop productivity, highlighting the importance of strategies to enhance plant stress tolerance. This study investigated whether root-associated fungal endophytes derived from a salt-tolerant quinoa ecotype ...
Roberto Miño   +6 more
doaj   +1 more source

Determination of fertilization in the production and quality of piñon oil (Jatropha curcas L.)

open access: yesTemas Agrarios, 2019
The Piñon is a tree that grows on all types of soil, is resistant to drought and has medicinal properties. The seeds have high oil content which is suitable for the production of biodisel. The Piñon in the Caribbean, Colombian region is planted
Camilo José Iguarán Díaz
doaj   +1 more source

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