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Effects of heat stress on photosystem II activity and antioxidant enzymes in two maize cultivars
Main conclusion The main reason for the maize genotype “DKC7221” to be heat tolerant is to have higher photosynthetic activity under heat stress conditions. The genotype “P3167” is sensitive to high temperature because of the heat-induced inhibition in photosynthetic electron transport reactions. In...
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| Published in: | Planta 2021-04, Vol.253 (4), p.85-85, Article 85 |
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| creator | Doğru, Ali |
| description | Main conclusion
The main reason for the maize genotype “DKC7221” to be heat tolerant is to have higher photosynthetic activity under heat stress conditions. The genotype “P3167” is sensitive to high temperature because of the heat-induced inhibition in photosynthetic electron transport reactions.
In the present study, the effect of heat stress (45 ºC for 20 min) on some physiological changes was investigated through a chlorophyll afluorescence technique, and some endogenous resistance mechanisms (activities of some antioxidant enzymes, free proline, and reduced ascorbate contents) in two maize cultivars (
Zea mays
L. cvs. P3167 and DKC7221). Chlorophyll fluorescence measurements demonstrated that heat stress led to the reduction in the efficiency of the Hill reaction, accumulation of inactive reaction centers, inhibition of electron flow from reaction centers to the plastoquinone pool, and induction of non-photochemical dissipation of absorbed light energy. Changes in Φo/(1 – Φo), SFI
ABS
and PI
ABS
indicated that electron transport reactions in P3167 were almost completely inhibited by heat stress. In DKC7221, however, photosynthetic electron transport reactions were maintained under heat stress conditions. As a result of impairment in the photosynthetic efficiency in P3167 under heat stress, oxidative stress appeared as shown by lower antioxidant activity, accumulation of H
2
O
2
, malondialdehyde, and formazon and photooxidative injuries in chlorophyll pigments in the leaf tissue. DKC7221, on the other hand, had a higher antioxidant efficiency and lower oxidative damage under heat stress. FeSOD activity was found to be responsible for the dismutation of superoxide radicals in both maize genotypes under heat stress. As a result, it may be concluded that the genotype DKC7221 is more tolerant to heat stress than P3167. |
| doi_str_mv | 10.1007/s00425-021-03611-6 |
| format | article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_2507724439</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2507362412</sourcerecordid><originalsourceid>FETCH-LOGICAL-c375t-e25e85dde299193b1578e56e50523a512db16fb4c8b6f801459933a2b60890c83</originalsourceid><addsrcrecordid>eNp9kMFO3DAQhq2KqmyhL8ChssSFS8rYjh3nWKEtrITUCz0bJ5mUoE289TjQ5ekxLLQSBw7W2JpvftsfY0cCvgmA6pQASqkLkKIAZYQozAe2EKWShYTS7rEFQN5DrfQ--0x0C5CbVfWJ7StVWQvaLNj1su-xTcRDz2_QJ04pIuXjxDc3IQXaUsKRr1bct2m4G9KW-6nLKw3h79DlynF62I5IfJh4ug989MMD8nZeZ9xHOmQfe78m_PJSD9ivH8urs4vi8uf56uz7ZdGqSqcCpUaruw5lXYtaNUJXFrVBDVoqr4XsGmH6pmxtY3qbP6LrWikvGwO2htaqA3ayy93E8GdGSm4cqMX12k8YZnJSQ1XJslR1Ro_foLdhjlN-3TOljCyFzJTcUW0MRBF7t4nD6OPWCXBP_t3Ov8v-3bN_Z_LQ15fouRmx-zfyKjwDagdQbk2_Mf6_-53YRwPBj3Y</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2507362412</pqid></control><display><type>article</type><title>Effects of heat stress on photosystem II activity and antioxidant enzymes in two maize cultivars</title><source>Springer Link</source><creator>Doğru, Ali</creator><creatorcontrib>Doğru, Ali</creatorcontrib><description>Main conclusion
The main reason for the maize genotype “DKC7221” to be heat tolerant is to have higher photosynthetic activity under heat stress conditions. The genotype “P3167” is sensitive to high temperature because of the heat-induced inhibition in photosynthetic electron transport reactions.
In the present study, the effect of heat stress (45 ºC for 20 min) on some physiological changes was investigated through a chlorophyll afluorescence technique, and some endogenous resistance mechanisms (activities of some antioxidant enzymes, free proline, and reduced ascorbate contents) in two maize cultivars (
Zea mays
L. cvs. P3167 and DKC7221). Chlorophyll fluorescence measurements demonstrated that heat stress led to the reduction in the efficiency of the Hill reaction, accumulation of inactive reaction centers, inhibition of electron flow from reaction centers to the plastoquinone pool, and induction of non-photochemical dissipation of absorbed light energy. Changes in Φo/(1 – Φo), SFI
ABS
and PI
ABS
indicated that electron transport reactions in P3167 were almost completely inhibited by heat stress. In DKC7221, however, photosynthetic electron transport reactions were maintained under heat stress conditions. As a result of impairment in the photosynthetic efficiency in P3167 under heat stress, oxidative stress appeared as shown by lower antioxidant activity, accumulation of H
2
O
2
, malondialdehyde, and formazon and photooxidative injuries in chlorophyll pigments in the leaf tissue. DKC7221, on the other hand, had a higher antioxidant efficiency and lower oxidative damage under heat stress. FeSOD activity was found to be responsible for the dismutation of superoxide radicals in both maize genotypes under heat stress. As a result, it may be concluded that the genotype DKC7221 is more tolerant to heat stress than P3167.</description><identifier>ISSN: 0032-0935</identifier><identifier>EISSN: 1432-2048</identifier><identifier>DOI: 10.1007/s00425-021-03611-6</identifier><identifier>PMID: 33788056</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Accumulation ; Agriculture ; Antioxidants ; Ascorbic acid ; Biomedical and Life Sciences ; Chlorophyll ; Corn ; Cultivars ; Ecology ; Efficiency ; Electron transport ; Enzymes ; Fluorescence ; Forestry ; Genotype & phenotype ; Genotypes ; Heat resistance ; Heat stress ; Heat tolerance ; Heat-Shock Response ; High temperature ; Hydrogen Peroxide ; Life Sciences ; Malondialdehyde ; Original Article ; Oxidative stress ; Photochemicals ; Photosynthesis ; Photosystem II ; Photosystem II Protein Complex - metabolism ; Physiological effects ; Pigments ; Plant Leaves - metabolism ; Plant Sciences ; Plant tissues ; Proline ; Reaction centers ; Stress, Physiological ; Superoxide ; Zea mays ; Zea mays - metabolism</subject><ispartof>Planta, 2021-04, Vol.253 (4), p.85-85, Article 85</ispartof><rights>The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2021</rights><rights>The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2021.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c375t-e25e85dde299193b1578e56e50523a512db16fb4c8b6f801459933a2b60890c83</citedby><cites>FETCH-LOGICAL-c375t-e25e85dde299193b1578e56e50523a512db16fb4c8b6f801459933a2b60890c83</cites><orcidid>0000-0003-0060-4691</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,786,790,27957,27958</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/33788056$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Doğru, Ali</creatorcontrib><title>Effects of heat stress on photosystem II activity and antioxidant enzymes in two maize cultivars</title><title>Planta</title><addtitle>Planta</addtitle><addtitle>Planta</addtitle><description>Main conclusion
The main reason for the maize genotype “DKC7221” to be heat tolerant is to have higher photosynthetic activity under heat stress conditions. The genotype “P3167” is sensitive to high temperature because of the heat-induced inhibition in photosynthetic electron transport reactions.
In the present study, the effect of heat stress (45 ºC for 20 min) on some physiological changes was investigated through a chlorophyll afluorescence technique, and some endogenous resistance mechanisms (activities of some antioxidant enzymes, free proline, and reduced ascorbate contents) in two maize cultivars (
Zea mays
L. cvs. P3167 and DKC7221). Chlorophyll fluorescence measurements demonstrated that heat stress led to the reduction in the efficiency of the Hill reaction, accumulation of inactive reaction centers, inhibition of electron flow from reaction centers to the plastoquinone pool, and induction of non-photochemical dissipation of absorbed light energy. Changes in Φo/(1 – Φo), SFI
ABS
and PI
ABS
indicated that electron transport reactions in P3167 were almost completely inhibited by heat stress. In DKC7221, however, photosynthetic electron transport reactions were maintained under heat stress conditions. As a result of impairment in the photosynthetic efficiency in P3167 under heat stress, oxidative stress appeared as shown by lower antioxidant activity, accumulation of H
2
O
2
, malondialdehyde, and formazon and photooxidative injuries in chlorophyll pigments in the leaf tissue. DKC7221, on the other hand, had a higher antioxidant efficiency and lower oxidative damage under heat stress. FeSOD activity was found to be responsible for the dismutation of superoxide radicals in both maize genotypes under heat stress. As a result, it may be concluded that the genotype DKC7221 is more tolerant to heat stress than P3167.</description><subject>Accumulation</subject><subject>Agriculture</subject><subject>Antioxidants</subject><subject>Ascorbic acid</subject><subject>Biomedical and Life Sciences</subject><subject>Chlorophyll</subject><subject>Corn</subject><subject>Cultivars</subject><subject>Ecology</subject><subject>Efficiency</subject><subject>Electron transport</subject><subject>Enzymes</subject><subject>Fluorescence</subject><subject>Forestry</subject><subject>Genotype & phenotype</subject><subject>Genotypes</subject><subject>Heat resistance</subject><subject>Heat stress</subject><subject>Heat tolerance</subject><subject>Heat-Shock Response</subject><subject>High temperature</subject><subject>Hydrogen Peroxide</subject><subject>Life Sciences</subject><subject>Malondialdehyde</subject><subject>Original Article</subject><subject>Oxidative stress</subject><subject>Photochemicals</subject><subject>Photosynthesis</subject><subject>Photosystem II</subject><subject>Photosystem II Protein Complex - metabolism</subject><subject>Physiological effects</subject><subject>Pigments</subject><subject>Plant Leaves - metabolism</subject><subject>Plant Sciences</subject><subject>Plant tissues</subject><subject>Proline</subject><subject>Reaction centers</subject><subject>Stress, Physiological</subject><subject>Superoxide</subject><subject>Zea mays</subject><subject>Zea mays - metabolism</subject><issn>0032-0935</issn><issn>1432-2048</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp9kMFO3DAQhq2KqmyhL8ChssSFS8rYjh3nWKEtrITUCz0bJ5mUoE289TjQ5ekxLLQSBw7W2JpvftsfY0cCvgmA6pQASqkLkKIAZYQozAe2EKWShYTS7rEFQN5DrfQ--0x0C5CbVfWJ7StVWQvaLNj1su-xTcRDz2_QJ04pIuXjxDc3IQXaUsKRr1bct2m4G9KW-6nLKw3h79DlynF62I5IfJh4ug989MMD8nZeZ9xHOmQfe78m_PJSD9ivH8urs4vi8uf56uz7ZdGqSqcCpUaruw5lXYtaNUJXFrVBDVoqr4XsGmH6pmxtY3qbP6LrWikvGwO2htaqA3ayy93E8GdGSm4cqMX12k8YZnJSQ1XJslR1Ro_foLdhjlN-3TOljCyFzJTcUW0MRBF7t4nD6OPWCXBP_t3Ov8v-3bN_Z_LQ15fouRmx-zfyKjwDagdQbk2_Mf6_-53YRwPBj3Y</recordid><startdate>20210401</startdate><enddate>20210401</enddate><creator>Doğru, Ali</creator><general>Springer Berlin Heidelberg</general><general>Springer Nature B.V</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7QP</scope><scope>7QR</scope><scope>7TM</scope><scope>7X2</scope><scope>7X7</scope><scope>7XB</scope><scope>88A</scope><scope>88E</scope><scope>8AO</scope><scope>8FD</scope><scope>8FE</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FR3</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>LK8</scope><scope>M0K</scope><scope>M0S</scope><scope>M1P</scope><scope>M7P</scope><scope>P64</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>RC3</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0003-0060-4691</orcidid></search><sort><creationdate>20210401</creationdate><title>Effects of heat stress on photosystem II activity and antioxidant enzymes in two maize cultivars</title><author>Doğru, Ali</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c375t-e25e85dde299193b1578e56e50523a512db16fb4c8b6f801459933a2b60890c83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Accumulation</topic><topic>Agriculture</topic><topic>Antioxidants</topic><topic>Ascorbic acid</topic><topic>Biomedical and Life Sciences</topic><topic>Chlorophyll</topic><topic>Corn</topic><topic>Cultivars</topic><topic>Ecology</topic><topic>Efficiency</topic><topic>Electron transport</topic><topic>Enzymes</topic><topic>Fluorescence</topic><topic>Forestry</topic><topic>Genotype & phenotype</topic><topic>Genotypes</topic><topic>Heat resistance</topic><topic>Heat stress</topic><topic>Heat tolerance</topic><topic>Heat-Shock Response</topic><topic>High temperature</topic><topic>Hydrogen Peroxide</topic><topic>Life Sciences</topic><topic>Malondialdehyde</topic><topic>Original Article</topic><topic>Oxidative stress</topic><topic>Photochemicals</topic><topic>Photosynthesis</topic><topic>Photosystem II</topic><topic>Photosystem II Protein Complex - metabolism</topic><topic>Physiological effects</topic><topic>Pigments</topic><topic>Plant Leaves - metabolism</topic><topic>Plant Sciences</topic><topic>Plant tissues</topic><topic>Proline</topic><topic>Reaction centers</topic><topic>Stress, Physiological</topic><topic>Superoxide</topic><topic>Zea mays</topic><topic>Zea mays - metabolism</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Doğru, Ali</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Calcium & Calcified Tissue Abstracts</collection><collection>Chemoreception Abstracts</collection><collection>Nucleic Acids Abstracts</collection><collection>Agricultural Science Collection</collection><collection>ProQuest Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Biology Database (Alumni Edition)</collection><collection>Medical Database (Alumni Edition)</collection><collection>ProQuest Pharma Collection</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni)</collection><collection>ProQuest Central</collection><collection>ProQuest Agriculture & Environmental Science Database</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>AUTh Library subscriptions: ProQuest Central</collection><collection>ProQuest Natural Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central</collection><collection>Engineering Research Database</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>SciTech Premium Collection (Proquest) (PQ_SDU_P3)</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Biological Sciences</collection><collection>Agriculture Science Database</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>PML(ProQuest Medical Library)</collection><collection>Biological Science Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Genetics Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Planta</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Doğru, Ali</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effects of heat stress on photosystem II activity and antioxidant enzymes in two maize cultivars</atitle><jtitle>Planta</jtitle><stitle>Planta</stitle><addtitle>Planta</addtitle><date>2021-04-01</date><risdate>2021</risdate><volume>253</volume><issue>4</issue><spage>85</spage><epage>85</epage><pages>85-85</pages><artnum>85</artnum><issn>0032-0935</issn><eissn>1432-2048</eissn><notes>ObjectType-Article-1</notes><notes>SourceType-Scholarly Journals-1</notes><notes>ObjectType-Feature-2</notes><notes>content type line 23</notes><abstract>Main conclusion
The main reason for the maize genotype “DKC7221” to be heat tolerant is to have higher photosynthetic activity under heat stress conditions. The genotype “P3167” is sensitive to high temperature because of the heat-induced inhibition in photosynthetic electron transport reactions.
In the present study, the effect of heat stress (45 ºC for 20 min) on some physiological changes was investigated through a chlorophyll afluorescence technique, and some endogenous resistance mechanisms (activities of some antioxidant enzymes, free proline, and reduced ascorbate contents) in two maize cultivars (
Zea mays
L. cvs. P3167 and DKC7221). Chlorophyll fluorescence measurements demonstrated that heat stress led to the reduction in the efficiency of the Hill reaction, accumulation of inactive reaction centers, inhibition of electron flow from reaction centers to the plastoquinone pool, and induction of non-photochemical dissipation of absorbed light energy. Changes in Φo/(1 – Φo), SFI
ABS
and PI
ABS
indicated that electron transport reactions in P3167 were almost completely inhibited by heat stress. In DKC7221, however, photosynthetic electron transport reactions were maintained under heat stress conditions. As a result of impairment in the photosynthetic efficiency in P3167 under heat stress, oxidative stress appeared as shown by lower antioxidant activity, accumulation of H
2
O
2
, malondialdehyde, and formazon and photooxidative injuries in chlorophyll pigments in the leaf tissue. DKC7221, on the other hand, had a higher antioxidant efficiency and lower oxidative damage under heat stress. FeSOD activity was found to be responsible for the dismutation of superoxide radicals in both maize genotypes under heat stress. As a result, it may be concluded that the genotype DKC7221 is more tolerant to heat stress than P3167.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><pmid>33788056</pmid><doi>10.1007/s00425-021-03611-6</doi><tpages>1</tpages><orcidid>https://orcid.org/0000-0003-0060-4691</orcidid></addata></record> |
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| subjects | Accumulation Agriculture Antioxidants Ascorbic acid Biomedical and Life Sciences Chlorophyll Corn Cultivars Ecology Efficiency Electron transport Enzymes Fluorescence Forestry Genotype & phenotype Genotypes Heat resistance Heat stress Heat tolerance Heat-Shock Response High temperature Hydrogen Peroxide Life Sciences Malondialdehyde Original Article Oxidative stress Photochemicals Photosynthesis Photosystem II Photosystem II Protein Complex - metabolism Physiological effects Pigments Plant Leaves - metabolism Plant Sciences Plant tissues Proline Reaction centers Stress, Physiological Superoxide Zea mays Zea mays - metabolism |
| title | Effects of heat stress on photosystem II activity and antioxidant enzymes in two maize cultivars |
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