نتایج جستجو برای: microbial changes

تعداد نتایج: 974631  

Ali Salehi Sardoei, Gholam Abbas Mohammadi Parviz Rahbarian

The effects of salicylic acid (SA) and Putrescine (Put), on cut Narcissus was studied. SA (0, 100 and 200 mg l-1) and Put (0, 150 and 300 mg l-1), their combinations were tested as preservative mixture. This study was conducted in a factorial experiment with complete randomized design on 108 Narcissus cut flowers in horticulture laboratory of agriculture faculty of Islamic...

2009
Irene M. Unger Ann C. Kennedy Rose-Marie Muzika

Flooding affects both aboveand below-ground ecosystem processes. While the below-ground changes may be less obvious, they are as important as the above-ground changes. Soil microorganisms are sensitive to disturbance, and shifts in soil microbial community structure are expected when anaerobic conditions develop from flooding. The primary objective of these studies was to determine the effect o...

2010
Dexter B. Watts H. Allen Torbert Yucheng Feng Stephen A. Prior

Manure applications can benefit crop productivity by adding required nutrients and organic matter to soil. There is a paucity of information on how soil microbial community dynamics will be altered by the application of manure to different landscape positions. Thus, an in situ field study was conducted during the summer and winter months to evaluate microbiological properties of three soil type...

2015
Chelsea J. Carey J. Michael Beman Valerie T. Eviner Carolyn M. Malmstrom Stephen C. Hart

Global and regional environmental changes often co-occur, creating complex gradients of disturbance on the landscape. Soil microbial communities are an important component of ecosystem response to environmental change, yet little is known about how microbial structure and function respond to multiple disturbances, or whether multiple environmental changes lead to unanticipated interactive effec...

Ali Salehi Sardoei, Gholam Abbas Mohammadi Parviz Rahbarian

The effects of salicylic acid (SA) and Putrescine (Put), on cut Narcissus was studied. SA (0, 100 and 200 mg l-1) and Put (0, 150 and 300 mg l-1), their combinations were tested as preservative mixture. This study was conducted in a factorial experiment with complete randomized design on 108 Narcissus cut flowers in horticulture laboratory of agriculture faculty of Islamic...

2015
Jürg B. Logue Stuart E. G. Findlay Jérôme Comte

Earth is teeming with taxonomically, phylogenetically, and metabolically highly diverse microorganisms ; organisms that are crucial for sustaining life on our planet in that they carry out processes of great biogeochemical significance. The processes and mechanisms underlying their diversity and distribution are, thus, of great interest, yet—despite their importance—only poorly understood. Micr...

2016
Meital Nuriel-Ohayon Hadar Neuman Omry Koren

Several healthy developmental processes such as pregnancy, fetal development, and infant development include a multitude of physiological changes: weight gain, hormonal, and metabolic changes, as well as immune changes. In this review, we present an additional important factor which both influences and is affected by these physiological processes-the microbiome. We summarize the known changes i...

2012
Yuan Kun Lee Kay Yi Low Kewin Siah Lynley M. Drummond Kok-Ann Gwee

BACKGROUND Kiwifruit is high in pectic polysaccharides and dietary fiber. This study aimed to find out how the ingestion of kiwifruit will affect intestinal microbiota populations, namely Lactobacillus, Bacteroides, Clostridium, Bifidobacterium, and Enterococcus. METHODS Freeze dried kiwifruit (equivalent of two fresh kiwifruits) was given to each of the six subjects daily for four days. Faec...

Journal: :FEMS microbiology ecology 2006
Naoise Nunan Brajesh Singh Eileen Reid Brian Ord Artemis Papert Julie Squires Jim I Prosser Ron E Wheatley Jim McNicol Peter Millard

Soil microbial communities play an important role in nutrient cycling and nutrient availability, especially in unimproved soils. In grazed pastures, sheep urine causes local changes in nutrient concentration which may be a source of heterogeneity in microbial community structure. In the present study, we investigated the effects of synthetic urine on soil microbial community structure, using ph...

2013
Masayuki Ushio Takeshi Miki Teri C. Balser

How diversity influences the stability of a community function is a major question in ecology. However, only limited empirical investigations of the diversity-stability relationship in soil microbial communities have been undertaken, despite the fundamental role of microbial communities in driving carbon and nutrient cycling in terrestrial ecosystems. In this study, we conducted a microcosm exp...

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