Taxon-specific microbial growth and mortality patterns reveal distinct temporal population responses to rewetting in a California grassland soil.

08:00 EDT 12th March 2020 | BioPortfolio

Summary of "Taxon-specific microbial growth and mortality patterns reveal distinct temporal population responses to rewetting in a California grassland soil."

Microbial activity increases after rewetting dry soil, resulting in a pulse of carbon mineralization and nutrient availability. The biogeochemical responses to wet-up are reasonably well understood and known to be microbially mediated. Yet, the population level dynamics, and the resulting changes in microbial community patterns, are not well understood as ecological phenomena. Here, we used sequencing of 16S rRNA genes coupled with heavy water (HO) DNA quantitative stable isotope probing to estimate population-specific rates of growth and mortality in response to a simulated wet-up event in a California annual grassland soil. Bacterial growth and mortality responded rapidly to wet-up, within 3 h, and continued throughout the 168 h incubation, with patterns of sequential growth observed at the phylum level. Of the 37 phyla detected in the prewet community, growth was found in 18 phyla while mortality was measured in 26 phyla. Rapid growth and mortality rates were measurable within 3 h of wet-up but had contrasting characteristics; growth at 3 h was dominated by select taxa within the Proteobacteria and Firmicutes, whereas mortality was taxonomically widespread. Furthermore, across the community, mortality exhibited density-independence, consistent with the indiscriminate shock resulting from dry-down and wet-up, whereas growth was density-dependent, consistent with control by competition or predation. Total aggregated growth across the community was highly correlated with total soil CO production. Together, these results illustrate how previously "invisible" population responses can translate quantitatively to emergent observations of ecosystem-scale biogeochemistry.


Journal Details

This article was published in the following journal.

Name: The ISME journal
ISSN: 1751-7370


DeepDyve research library

PubMed Articles [27156 Associated PubMed Articles listed on BioPortfolio]

CAMITAX: Taxon labels for microbial genomes.

The number of microbial genome sequences is increasing exponentially, especially thanks to recent advances in recovering complete or near-complete genomes from metagenomes and single cells. Assigning ...

Divergence-based introgression polarization.

Introgressive hybridization results in the transfer of genetic material between species, often with fitness implications for the recipient species. The development of statistical methods for detecting...

Patterns of amino acids intake are strongly associated with cardiovascular mortality, independently of the sources of protein.

The intake of specific amino acids (AA) has been associated with cardiovascular health, but amino acids are consumed together as dietary protein. Here we investigated the association between identifie...

Patterns of Aging Biomarkers, Mortality, and Damaging Mutations Illuminate the Beginning of Aging and Causes of Early-Life Mortality.

An increase in the probability of death has been a defining feature of aging, yet human perinatal mortality starts high and decreases with age. Previous evolutionary models suggested that organismal a...

Distinct patterns of microbial metabolic fingerprints in sows and their offspring: a pilot study.

Microbial metabolism and growth in the intestinal tract depend on the composition of substrates present in the digesta and their ability to be metabolised by the microorganisms. The aim of this pilot ...

Clinical Trials [10819 Associated Clinical Trials listed on BioPortfolio]

The Effect of Diet on Microbial Profile and Disease Outcomes in Patients With Inflammatory Bowel Diseases

This clinical study is designed to evaluate the effect of two dietary patterns, Mediterranean diet and the specific carbohydrate diet on clinical, inflammatory and microbial parameters in ...

Intestinal Microbiota on Allergy, Growth and Development

There is growing evidence that microbial programming beginning in-utero can be a central component for a balanced development of innate immunity and optimal growth and development in newbo...

Diagnosis of Septicaemia by Detection of Microbial DNA in Blood in Severe Infections

The primary purpose is to improve and quicken the microbial diagnosis in severe infections, since only one third of the cases are documented by blood cultures and adequate anti-infective t...

Preterm Infant Multicentre Growth Study

The purpose of this study is to improve health professionals understanding of preterm infant growth patterns, and to determine if early growth patterns predict risks of adverse metabolic o...

The Effects of Early Complementary Feeding on Growth, Neurodevelopment, Sleep and Gut Health

The overall objective of this project is to understand how consuming a prescribed diet of different infant foods (which may contain cereals,fruits, vegetables, meats, dairy) during the tim...

Medical and Biotech [MESH] Definitions

Light absorbing proteins and protein prosthetic groups found in certain microorganisms. Some microbial photoreceptors initiate specific chemical reactions which signal a change in the environment, while others generate energy by pumping specific ions across a cellular membrane.

Pathogens' molecules with specific sequence patterns that are recognized by PATTERN RECOGNITION RECEPTORS. They include microbial DNA, double-stranded RNA, surface glycoproteins, lipopolysaccharides, peptidoglycans, and lipoteichoic acid.

Enumeration by direct count of viable, isolated bacterial, archaeal, or fungal CELLS or SPORES capable of growth on solid CULTURE MEDIA. Each colony (i.e., microbial colony-forming unit) represents the progeny of a single cell in the original inoculum. The method is used routinely by environmental microbiologists for quantifying organisms in AIR; FOOD; and WATER; by clinicians for measuring patients' microbial load; and in antimicrobial drug testing.

The use of statistical methods in the analysis of a body of literature to reveal the historical development of subject fields and patterns of authorship, publication, and use. Formerly called statistical bibliography. (from The ALA Glossary of Library and Information Science, 1983)

An acute, transmissible, infectious disease associated with high MORTALITY and MORBIDITY in young turkeys (poults). It is characterized by DIARRHEA; ANOREXIA; growth depression, and immune dysfunction. The cause is unknown but astroviruses (AVASTROVIRUS) and coronaviruses (CORONAVIRUS, TURKEY) have been isolated from diseased poults and are thought to cause the enteritis and increased susceptibility to bacterial infections.

Quick Search

DeepDyve research library

Relevant Topics

DNA sequencing
DNA sequencing is the process of determining the precise order of nucleotides within a DNA molecule. During DNA sequencing, the bases of a small fragment of DNA are sequentially identified from signals emitted as each fragment is re-synthesized from a ...

Bioinformatics is the application of computer software and hardware to the management of biological data to create useful information. Computers are used to gather, store, analyze and integrate biological and genetic information which can then be applied...

Searches Linking to this Article