Results 51 to 60 of about 1,062,757 (298)

Macrophages Contribute to the Spermatogonial Niche in the Adult Testis

Cell Reports, 2015
The testis produces sperm throughout the male reproductive lifespan by balancing self-renewal and differentiation of spermatogonial stem cells (SSCs).
Tony DeFalco, Sarah J. Potter, Alyna V. Williams, Brittain Waller, Matthew J. Kan, Blanche Capel   +5 more
doaj   +1 more source

Competition and Niche Differentiation of Water and Nutrients between Broussonetia papyrifera and Platycladus orientalis under Prolonged Drought Stress

Agronomy, 2022
Little is known about the competition between and niche differentiation of water and nutrients between angiosperm and gymnosperm tree species under prolonged drought stress, especially in fragile environments.
Kai Yao, Yanqing Wang, Yanyou Wu
doaj   +1 more source

Niches within a niche: ecological differentiation of subterranean amphipods across Europe's interstitial waters [PDF]

Ecography, 2019
Species that successfully colonized subterranean environments are subject to two opposing selection processes. Stringent abiotic factors select for convergent adaptations, such as loss of eyes and pigments, while interspecific competition drives between‐species divergence.
Cene Fišer, Teo Delić, Roman Luštrik, Maja Zagmajster, Florian Altermatt   +4 more
openaire   +4 more sources

Niche characteristics of lichen in Dabancheng mountainous area, Urumqi

Guangxi Zhiwu, 2023
In order to reveal the status of habitat resource utilization and the degree of competition among lichens in Dabancheng mountainous areas. In this work, 30 plots were sampled in the field and the species cover data of the plots were investigated, and the
Zuosen LI, Anwar TUMUR
doaj   +1 more source

Diversity and complexity in neural organoids

FEBS Letters, EarlyView.
Neural organoid research aims to expand genetic diversity on one side and increase tissue complexity on the other. Chimeroids integrate multiple donor genomes within single organoids. Self‐organising multi‐identity organoids, exogenous cell seeding, or enforced assembly of region‐specific organoids contribute to tissue complexity.
Ilaria Chiaradia, Madeline A. Lancaster
wiley   +1 more source

The relationship between niche breadth and geographic range size in African Horseshoe bats (Rhinolophidae, Chiroptera) [PDF]

, 2011
According to Brown's hypothesis, generalists have high niche breadth and can tolerate a wide variety of environmental conditions resulting in large geographic range sizes. Conversely, specialists have low niche breadth and small range sizes.
Aronson, Jonathan
core   +1 more source

Niche breadth and niche overlap of typical plant communities in the plateau temperate semi-arid river valley climatic region of the Qinghai-Xizang plateau

Frontiers in Plant Science
IntroductionThe alpine semi-arid river valleys of the eastern Qinghai-Xizang Plateau are characterized by strong environmental heterogeneity and ecological fragility. Herbaceous plants dominate these ecosystems; however, integrative studies linking niche
Benyi Fu, Benyi Fu, Benyi Fu, Benyi Fu, Wei Yang, Wei Yang, Wei Yang, Wei Yang, Jie Yang, Jie Yang, Jie Yang, Jie Yang, Daqing Luo, Daqing Luo, Daqing Luo, Daqing Luo, Xingle Qu, Xingle Qu, Xingle Qu, Xingle Qu   +19 more
doaj   +1 more source

The human gut microbiome across the life course

FEBS Letters, EarlyView.
Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero, Basak Bahcivanci, Antonietta Hayhoe, Animesh Acharjee, Ezgi Özkurt   +4 more
wiley   +1 more source

Communication between the stem cell niche and an adjacent differentiation niche through miRNA and EGFR signaling orchestrates exit from the stem cell state in the Drosophila ovary.

PLoS Biology
The signaling environment, or niche, often governs the initial difference in behavior of an adult stem cell and a derivative that initiates a path towards differentiation.
Jiani Chen, Chaosqun Li, Yifeng Sheng, Junwei Zhang, Lan Pang, Zhi Dong, Zhiwei Wu, Yueqi Lu, Zhiguo Liu, Qichao Zhang, Xueying Guan, Xuexin Chen, Jianhua Huang   +12 more
doaj   +1 more source

Light‐dependent niche differentiation in two mixotrophic bacterivores

Environmental Microbiology Reports, 2022
Summary Mixotrophy usually is considered with respect to the advantages gained and the associated trade‐offs of this form of nutrition, compared to specialized competitors, strict photoautotrophs and heterotrophs. However, we currently have an incomplete understanding of the functional diversity of mixotrophs and ...
Robert Fischer, Julia Kitzwögerer, Robert Ptacnik   +2 more
openaire   +2 more sources