U.S. flagAn official website of the United States government
                    Here's how you know **Official websites use .gov**
                            
                            A **.gov** website belongs to an official government organization in the United States.
 **Secure .gov websites use HTTPS**
                            
                            A **lock** (                            
                              A locked padlock                                                      
                            
                            ) or **https://** means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.


Menu Agricultural Research Service
						
                    U.S. DEPARTMENT OF AGRICULTURE
 Wind Erosion and Water Conservation Research: Lubbock, TX
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                                    Software
                People

                    Staff Listing
                                    CareersSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Plains Area Lubbock, Texas Cropping Systems Research Laboratory Wind Erosion and Water Conservation Research Research Publications at this Location





- ARS National Programs
- Search for a scientific manuscript
- Search for a research project
- ARS Software
- Programs and Projects
- Collaborations
- Subjects of Investigation
- Publications

Title:   Author  item
                                            MOORE-KUCERA, JENNIFER - Texas Tech Universityitem
                                            KAKARLA, MAMATHA - Texas Tech Universityitem
                                            FULTZ, LISA - Louisiana State Universityitem
                                            LI, CHENHUI - Texas Tech Universityitem
                                            Acosta-Martinez, Veronicaitem
                                            ZAK, JOHN - Texas Tech University
  Submitted to: Soil Ecology Society Conference
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 6/9/2015
                                    Publication  Date: 6/12/2015
                                    Citation: Moore-Kucera, J., Kakarla, M., Fultz, L., Li, C., Acosta Martinez, V., Zak, J. 2015. Phylogenetic changes in soil bacterial communities as CRP land is converted back to cropland[abstract]. Soil Ecology Society Conference. June 9-12, 2015. Colorado Springs, CO.Interpretive Summary:
                                Technical Abstract: We assessed the impacts of conversion of Conservation Reserve Program (CRP) land to continuous cropland on soil bacterial communities. Soil samples (0-10cm and 10-30cm) were collected from 3 long-term (>20 y) CRP fields and 3 fields recently (within 1-2 y in 2012) converted from CRP (>20 y) to dryland crop production across three counties of the Texas High Plains region during December 2012, 2013, and 2014. Genomic DNA was isolated from the soil samples and V3-V4 region of 16S rRNA gene was amplified and sequenced on Illumina Miseq platform using dual index sequencing approach. There were no significant changes in bacterial diversity between CRP and croplands in 2012. In 2013, however, phylogenetic diversity was higher in CRP than croplands at 0-10cm and lower in CRP than croplands at 10-30cm. Based on 2012 and 2013 data (2014 data pending), weighted and unweighted UniFrac distances revealed distinct bacterial communities with management and depth. The croplands were associated with higher abundance of Proteobacteria, Gemmatimonadetes, Fibrobacters, TM7, and Bacteroidetes and CRP fields were associated with Acidobacteria, Verrucomicrobia, Planctomycetes, Cyanobacteria, and Chloroflexi. The bacterial assemblage in the converted CRP fields resembled the community from a long-term cropland in a parallel study. This rapid response indicates the sensitivity of soil microbial communities to land management changes and may lead to the loss of ecological benefits achieved during CRP restoration. The ecological significance of these shifts are being explored via linking composition with nutrient cycling and soil carbon dynamics.


Return to top


Connect with ARS Sign up


ARS Home
                            USDA.gov
                            Plain Writing
                            Policies & Links
                            Civil Rights Statements
                            FOIA
                            Accessibility Statement
                            Privacy Policy
                            Non-Discrimination Statement
                            Quality of Information
                            USA.gov
                            WhiteHouse.gov