| Title | Soil Microbial Responses to Aflatoxin Exposure: Consequences for Biomass, Activity and Catabolic Functionality |
| Publication Type | Journal Article |
| Year of Publication | 2023 |
| Authors | Albert J., More C., Korz S., Munoz K. |
| Journal | Soil Systems |
| Volume | 7 |
| Pagination | 26 |
| Date Published | Mar |
| Type of Article | Article |
| Accession Number | WOS:000958664900001 |
| Keywords | aflatoxin, Agriculture, aspergillus-flavus, carbon-use efficiency, catabolic functionality, community, effects, enzyme-activity, fumigation-extraction method, microorganisms, organic-matter, physiological profiles, respiration, soil microbial activity, Soil microbial biomass, sorption |
| Abstract | Aflatoxins (AFs) are fungal secondary metabolites frequently detected in soil that exhibit in vitro toxicity to certain soil microorganisms. However, microbial responses at different levels and in complex systems such as the soil environment have not been systematically studied. Therefore, we investigated multiple microbial responses in two different soils (sandy loam and clay) to aflatoxin B1 (AFB1) at environmentally relevant concentrations (0.5-500 mu g kg(-1)) during a 28-day incubation. General microbial parameters for biomass (microbial biomass carbon and ergosterol), activity (glucose-induced and basal respiration), and catabolic functionality (substrate utilization patterns) were assessed. We observed minor and transient effects in both soils. In sandy loam, we found negative effects on activity and catabolic functionality with increased metabolic quotient, while clay soil exhibited stimulation for the same parameters, suggesting a hormetic effect due to reduced bioavailability through sorption onto clay minerals. Our results indicate that AFB1 does not pose a threat to general microbial indicators under the test conditions in soils without previous AF contamination. Given the toxic potential of AFs to specific microorganisms, further studies should investigate responses at higher taxonomic and functional levels in natural environments of aflatoxigenic fungi, such as tropical soils, and including additional physicochemical stressors.
|
| Short Title | Soil Syst.Soil Syst. |
| Alternate Journal | Soil Syst. |
stdClass Object
(
[vid] => 814
[uid] => 11
[title] => Soil Microbial Responses to Aflatoxin Exposure: Consequences for Biomass, Activity and Catabolic Functionality
[log] =>
[status] => 1
[comment] => 0
[promote] => 1
[sticky] => 0
[nid] => 644
[type] => biblio
[language] => und
[created] => 1691491334
[changed] => 1691491334
[tnid] => 0
[translate] => 0
[revision_timestamp] => 1691491334
[revision_uid] => 11
[biblio_type] => 102
[biblio_number] => 1
[biblio_other_number] =>
[biblio_sort_title] => Soil Microbial Responses to Aflatoxin Exposure Consequences for
[biblio_secondary_title] => Soil Systems
[biblio_tertiary_title] =>
[biblio_edition] =>
[biblio_publisher] =>
[biblio_place_published] =>
[biblio_year] => 2023
[biblio_volume] => 7
[biblio_pages] => 26
[biblio_date] => Mar
[biblio_isbn] =>
[biblio_lang] => English
[biblio_abst_e] => Aflatoxins (AFs) are fungal secondary metabolites frequently detected in soil that exhibit in vitro toxicity to certain soil microorganisms. However, microbial responses at different levels and in complex systems such as the soil environment have not been systematically studied. Therefore, we investigated multiple microbial responses in two different soils (sandy loam and clay) to aflatoxin B1 (AFB1) at environmentally relevant concentrations (0.5-500 mu g kg(-1)) during a 28-day incubation. General microbial parameters for biomass (microbial biomass carbon and ergosterol), activity (glucose-induced and basal respiration), and catabolic functionality (substrate utilization patterns) were assessed. We observed minor and transient effects in both soils. In sandy loam, we found negative effects on activity and catabolic functionality with increased metabolic quotient, while clay soil exhibited stimulation for the same parameters, suggesting a hormetic effect due to reduced bioavailability through sorption onto clay minerals. Our results indicate that AFB1 does not pose a threat to general microbial indicators under the test conditions in soils without previous AF contamination. Given the toxic potential of AFs to specific microorganisms, further studies should investigate responses at higher taxonomic and functional levels in natural environments of aflatoxigenic fungi, such as tropical soils, and including additional physicochemical stressors.
[biblio_abst_f] =>
[biblio_full_text] => 0
[biblio_url] =>
[biblio_issue] =>
[biblio_type_of_work] => Article
[biblio_accession_number] => WOS:000958664900001
[biblio_call_number] =>
[biblio_notes] => ISI Document Delivery No.: C0AZ9
Times Cited: 1
Cited Reference Count: 81
Albert, Julius More, Camilla Korz, Sven Munoz, Katherine
Munoz, Katherine/IXX-0323-2023
Munoz, Katherine/0000-0003-2502-3308
Federal Ministry of Food and Agriculture BLE [AflaZ 2816PROC14]
The project is being funded by the Federal Ministry of Food and Agriculture BLE under the reference AflaZ 2816PROC14.
1
2
Mdpi
Basel
2571-8789
[biblio_custom1] =>
[biblio_custom2] =>
[biblio_custom3] =>
[biblio_custom4] =>
[biblio_custom5] =>
[biblio_custom6] =>
[biblio_custom7] => 23
[biblio_research_notes] =>
[biblio_number_of_volumes] =>
[biblio_short_title] => Soil Syst.Soil Syst.
[biblio_alternate_title] => Soil Syst.
[biblio_original_publication] =>
[biblio_reprint_edition] =>
[biblio_translated_title] =>
[biblio_section] =>
[biblio_citekey] => 644
[biblio_coins] =>
[biblio_doi] =>
[biblio_issn] =>
[biblio_auth_address] => [Albert, Julius; More, Camilla; Korz, Sven; Munoz, Katherine] Univ Kaiserslautern Landau, Inst Environm Sci, iES Landau, D-76829 Landau, Germany.
Munoz, K (corresponding author), Univ Kaiserslautern Landau, Inst Environm Sci, iES Landau, D-76829 Landau, Germany.
k.munoz@rptu.de
[biblio_remote_db_name] =>
[biblio_remote_db_provider] =>
[biblio_label] =>
[biblio_access_date] =>
[biblio_refereed] =>
[biblio_md5] => 687be120ba5376465fca9b7a86623c3e
[biblio_formats] => Array
(
[biblio_abst_e] => full_html
[biblio_abst_f] => full_html
[biblio_notes] => full_html
[biblio_research_notes] => full_html
[biblio_custom1] => full_html
[biblio_custom2] => full_html
[biblio_custom3] => full_html
[biblio_custom4] => full_html
[biblio_custom5] => full_html
[biblio_custom6] => full_html
[biblio_custom7] => full_html
[biblio_coins] => full_html
[biblio_auth_address] => full_html
)
[biblio_type_name] => Journal Article
[biblio_contributors] => Array
(
[0] => Array
(
[nid] => 644
[vid] => 814
[cid] => 873
[auth_type] => 1
[auth_category] => 1
[rank] => 0
[merge_cid] => 0
[aka] => 0
[alt_form] => 0
[drupal_uid] =>
[name] => Albert, J.
[lastname] => Albert
[firstname] => J.
[prefix] =>
[suffix] =>
[initials] =>
[affiliation] =>
[literal] => 0
[md5] => ed202ecb9d21cfa24878c5363c385c51
)
[1] => Array
(
[nid] => 644
[vid] => 814
[cid] => 1820
[auth_type] => 1
[auth_category] => 1
[rank] => 1
[merge_cid] => 0
[aka] => 0
[alt_form] => 0
[drupal_uid] =>
[name] => More, C.
[lastname] => More
[firstname] => C.
[prefix] =>
[suffix] =>
[initials] =>
[affiliation] =>
[literal] => 0
[md5] => 3a9af1e3b4034fa638478281913a478d
)
[2] => Array
(
[nid] => 644
[vid] => 814
[cid] => 1821
[auth_type] => 1
[auth_category] => 1
[rank] => 2
[merge_cid] => 0
[aka] => 0
[alt_form] => 0
[drupal_uid] =>
[name] => Korz, S.
[lastname] => Korz
[firstname] => S.
[prefix] =>
[suffix] =>
[initials] =>
[affiliation] =>
[literal] => 0
[md5] => c7119d748069331552a29b2e5f00ca0b
)
[3] => Array
(
[nid] => 644
[vid] => 814
[cid] => 875
[auth_type] => 1
[auth_category] => 1
[rank] => 3
[merge_cid] => 0
[aka] => 0
[alt_form] => 0
[drupal_uid] =>
[name] => Munoz, K.
[lastname] => Munoz
[firstname] => K.
[prefix] =>
[suffix] =>
[initials] =>
[affiliation] =>
[literal] => 0
[md5] => 553babac21050fc8acb106885af84143
)
)
[biblio_keywords] => Array
(
[2162] => aflatoxin
[421] => Agriculture
[2036] => aspergillus-flavus
[1664] => carbon-use efficiency
[2164] => catabolic functionality
[761] => community
[2163] => effects
[420] => enzyme-activity
[1402] => fumigation-extraction method
[53] => microorganisms
[51] => organic-matter
[35] => physiological profiles
[310] => respiration
[216] => soil microbial activity
[321] => Soil microbial biomass
[2165] => sorption
)
[body] => Array
(
)
[rdf_mapping] => Array
(
[rdftype] => Array
(
[0] => sioc:Item
[1] => foaf:Document
)
[title] => Array
(
[predicates] => Array
(
[0] => dc:title
)
)
[created] => Array
(
[predicates] => Array
(
[0] => dc:date
[1] => dc:created
)
[datatype] => xsd:dateTime
[callback] => date_iso8601
)
[changed] => Array
(
[predicates] => Array
(
[0] => dc:modified
)
[datatype] => xsd:dateTime
[callback] => date_iso8601
)
[body] => Array
(
[predicates] => Array
(
[0] => content:encoded
)
)
[uid] => Array
(
[predicates] => Array
(
[0] => sioc:has_creator
)
[type] => rel
)
[name] => Array
(
[predicates] => Array
(
[0] => foaf:name
)
)
[comment_count] => Array
(
[predicates] => Array
(
[0] => sioc:num_replies
)
[datatype] => xsd:integer
)
[last_activity] => Array
(
[predicates] => Array
(
[0] => sioc:last_activity_date
)
[datatype] => xsd:dateTime
[callback] => date_iso8601
)
)
[name] => clare.cameron
[picture] => 0
[data] => a:13:{s:16:"ckeditor_default";s:1:"t";s:20:"ckeditor_show_toggle";s:1:"t";s:14:"ckeditor_width";s:4:"100%";s:13:"ckeditor_lang";s:2:"en";s:18:"ckeditor_auto_lang";s:1:"t";s:19:"biblio_show_profile";i:0;s:19:"biblio_my_pubs_menu";i:0;s:21:"biblio_contributor_id";s:1:"0";s:22:"biblio_id_change_count";s:1:"0";s:17:"biblio_user_style";s:6:"system";s:18:"biblio_baseopenurl";s:0:"";s:18:"biblio_openurl_sid";s:0:"";s:19:"biblio_crossref_pid";s:0:"";}
[entity_view_prepared] => 1
)