Dataset Information

Responses of soil bacterial communities and maize yields to sulfur application across four soil types.

ABSTRACT:

Introduction

This study assessed the effects of S application on maize yields and soil bacterial communities across four sites with different soil types and three S application rates (0 kg ha^-1, 30 kg ha^-1, and 90 kg ha^-1).

Methods

Changes in soil properties, bacterial community diversity, structure, and their contributions to maize production were evaluated post-S application treatments.

Results

(1) S application decreased soil pH, increased available sulfur (AS), and boosted maize yields in all soil types. (2) Reduced Chao1 and Shannon diversity indices were observed in black soil after S application. (3) Bacterial community structure was significantly affected by S application, except in sandy soil, impacting key stone taxa abundance. (4) Black soil showed higher sensitivity to S application due to less stable bacterial community structure. (5) Soil physicochemical indicators altered by S application, such as AS and pH, mediated bacterial diversity, influencing maize yield. Organic matter (OM) had the most significant direct positive effect on yield, followed by AS and bacterial community diversity.

Discussion

This study emphasizes the impact of S application on soil properties and bacterial communities in diverse soil types. Understanding these mechanisms can guide precision S application practices for maize yield regulation.

SUBMITTER: Dong S

PROVIDER: S-EPMC10965609 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature

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Publications

Responses of soil bacterial communities and maize yields to sulfur application across four soil types.

Dong Siqi S Zhang Bing B Wang Zhao Z Zhou Xue X Gao Qiang Q

Frontiers in microbiology 20240313

<h4>Introduction</h4>This study assessed the effects of S application on maize yields and soil bacterial communities across four sites with different soil types and three S application rates (0 kg ha<sup>-1</sup>, 30 kg ha<sup>-1</sup>, and 90 kg ha<sup>-1</sup>).<h4>Methods</h4>Changes in soil properties, bacterial community diversity, structure, and their contributions to maize production were evaluated post-S application treatments.<h4>Results</h4>(1) S application decreased soil pH, increase ...[more]

PMID: 38544860

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Project description:The aim of the experiment was to determine if temporal variations of belowground activity reflect the influence of the Cry1Ab protein from transgenic maize on soil bacteria and, hence, on a regulatory change of the microbial community (ability to metabolize sources belonging to different chemical guilds) and/or a change in numerical abundance of their cells. Litter placement is known for its strong influence on the soil decomposer communities. The effects of the addition of crop residues on respiration and catabolic activities of the bacterial community were examined in microcosm experiments. Four cultivars of Zea mays L. of two different isolines (each one including the conventional crop and its Bacillus thuringiensis cultivar) and one control of bulk soil were included in the experimental design. The growth models suggest a dichotomy between soils amended with either conventional or transgenic maize residues. The Cry1Ab protein appeared to influence the composition of the microbial community. The highly enhanced soil respiration observed during the first 72 h after the addition of Bt-maize residues can be interpreted as being related to the presence of the transgenic crop residues. This result was confirmed by agar plate counting, as the averages of the colony-forming units of soils in conventional treatments were about one-third of those treated with transgenic straw. Furthermore, the addition of Bt-maize appeared to induce increased microbial consumption of carbohydrates in BIOLOG EcoPlates. Three weeks after the addition of maize residues to the soils, no differences between the consumption rate of specific chemical guilds by bacteria in soils amended with transgenic maize and bacteria in soils amended with conventional maize were detectable. Reaped crop residues, comparable to post-harvest maize straw (a common practice in current agriculture), rapidly influence the soil bacterial cells at a functional level. Overall, these data support the existence of short Bt-induced ecological shifts in the microbial communities of croplands' soils.

Dataset Information

Responses of soil bacterial communities and maize yields to sulfur application across four soil types.

Introduction

Methods

Results

Discussion

Publications

Responses of soil bacterial communities and maize yields to sulfur application across four soil types.

Similar Datasets

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