Elevated Ground-level O(3) Changes the Diversity of Anoxygenic Purple Phototrophic Bacteria in Paddy Field

Overview

Journal Microb Ecol

Specialties Environmental Health
Microbiology

Date 2011 Jun 24

PMID 21698401

Citations 7

Authors

Youzhi Feng

Xiangui Lin

Yongchang Yu

Jianguo Zhu

Affiliations

Soon will be listed here.

Abstract

The knowledge of the impact of elevated ground-level O(3) below ground the agro-ecosystem is limited. A field experiment in China Ozone Free-Air Concentration Enrichment (FACE-O(3)) facility on a rice-wheat rotation system was carried out to investigate responses of anoxygenic phototrophic purple bacteria (AnPPB) to elevated ground-level O(3). AnPPB community structures and sizes in paddy soil were monitored by molecular approaches including PCR-DGGE and real-time quantitative PCR based upon the pufM gene on three typical rice growth stages. Repetitive sequence-based PCR (rep-PCR) in combination with culture-reliant method was conducted to reveal changes in genotypic diversity. Elevated ground-level O(3) statistically reduce AnPPB abundance and percentage in total bacterial community in flooded rice soil via decreasing their genotypic diversity and metabolic versatility. Concomitantly, their community composition changed after rice anthesis stage under elevated ground-level O(3). Our results from AnPPB potential responses imply that continuously elevated ground-level O(3) in the future would eventually harm the health of paddy ecosystem through negative effect on soil microorganisms.

Citing Articles

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