Effects of cadmium on meristem activity and nucleus ploidy in roots of Pisum sativum L. cv. Frisson seedlings
The effects of cadmium (Cd) administration on primary root growth, mitotic activity of apical meristems, mitotic aberrations and percentage of nucleus ploidy classes of differentiated roots were examined in Pisum sativum L. cv. Frisson. Cadmium caused a reduction of root length related to concentrat...
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| Veröffentlicht in: | Environmental and experimental botany 2006-12, Vol.58 (1), p.253-260 |
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| creator | Fusconi, Anna Repetto, Ombretta Bona, Elisa Massa, Nadia Gallo, Cristina Dumas-Gaudot, Eliane Berta, Graziella |
| description | The effects of cadmium (Cd) administration on primary root growth, mitotic activity of apical meristems, mitotic aberrations and percentage of nucleus ploidy classes of differentiated roots were examined in
Pisum sativum L. cv. Frisson. Cadmium caused a reduction of root length related to concentration, with an almost complete block of growth in plants treated with 250
μM Cd, from 24
h of treatment. Root lengthening is generally related to apical meristem activity, however, in the examined pea plants, mitotic activity was suppressed by 2.5 and 25
μM Cd treatment, while the highest Cd concentration, 250
μM, caused the occurrence of mitotic figures consisting almost exclusively of prophases. The lack of relation between root lengthening and mitotic activity was explained by the meristematic activity in the first period of treatment and by a different cell elongation. Lower (0.25, 0.5 and 1
μM), non-blocking Cd concentrations induced a number of mitotic aberrations, mainly consisting of sticky metaphases and anaphase bridges, whose frequency increased with Cd concentration. Besides, Cd induced variations of the percentages of nucleus populations in the differentiated roots, increasing the percentage of 4C nuclei and decreasing that of 2C. The mechanisms involved in the nuclear response to Cd, and the possible relations between Cd alteration of meristem cell activity and nuclear ploidy of differentiated cells are discussed. |
| doi_str_mv | 10.1016/j.envexpbot.2005.09.008 |
| format | Article |
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Pisum sativum L. cv. Frisson. Cadmium caused a reduction of root length related to concentration, with an almost complete block of growth in plants treated with 250
μM Cd, from 24
h of treatment. Root lengthening is generally related to apical meristem activity, however, in the examined pea plants, mitotic activity was suppressed by 2.5 and 25
μM Cd treatment, while the highest Cd concentration, 250
μM, caused the occurrence of mitotic figures consisting almost exclusively of prophases. The lack of relation between root lengthening and mitotic activity was explained by the meristematic activity in the first period of treatment and by a different cell elongation. Lower (0.25, 0.5 and 1
μM), non-blocking Cd concentrations induced a number of mitotic aberrations, mainly consisting of sticky metaphases and anaphase bridges, whose frequency increased with Cd concentration. Besides, Cd induced variations of the percentages of nucleus populations in the differentiated roots, increasing the percentage of 4C nuclei and decreasing that of 2C. The mechanisms involved in the nuclear response to Cd, and the possible relations between Cd alteration of meristem cell activity and nuclear ploidy of differentiated cells are discussed.</description><identifier>ISSN: 0098-8472</identifier><identifier>EISSN: 1873-7307</identifier><identifier>DOI: 10.1016/j.envexpbot.2005.09.008</identifier><identifier>CODEN: EEBODM</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Agronomy. Soil science and plant productions ; apical meristems ; Biological and medical sciences ; Cadmium ; cell differentiation ; cell nucleus ; Chromosome aberrations ; chromosome number ; cytotoxicity ; Economic plant physiology ; field crops ; Flow cytometry ; Fundamental and applied biological sciences. Psychology ; length ; mitosis ; Mitotic index ; peas ; phytotoxicity ; Pisum sativum ; plant damage ; polyploidy ; Root apical meristems ; root growth ; root meristems ; seedlings ; Symbiosis (nodules, symbiotic nitrogen fixation, mycorrhiza...)</subject><ispartof>Environmental and experimental botany, 2006-12, Vol.58 (1), p.253-260</ispartof><rights>2005 Elsevier B.V.</rights><rights>2007 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c466t-8987bcef01c7677caccf1301d12a6b64870eb7f194f1e2d01972a25d0b62bc513</citedby><cites>FETCH-LOGICAL-c466t-8987bcef01c7677caccf1301d12a6b64870eb7f194f1e2d01972a25d0b62bc513</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.envexpbot.2005.09.008$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=18403472$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Fusconi, Anna</creatorcontrib><creatorcontrib>Repetto, Ombretta</creatorcontrib><creatorcontrib>Bona, Elisa</creatorcontrib><creatorcontrib>Massa, Nadia</creatorcontrib><creatorcontrib>Gallo, Cristina</creatorcontrib><creatorcontrib>Dumas-Gaudot, Eliane</creatorcontrib><creatorcontrib>Berta, Graziella</creatorcontrib><title>Effects of cadmium on meristem activity and nucleus ploidy in roots of Pisum sativum L. cv. Frisson seedlings</title><title>Environmental and experimental botany</title><description>The effects of cadmium (Cd) administration on primary root growth, mitotic activity of apical meristems, mitotic aberrations and percentage of nucleus ploidy classes of differentiated roots were examined in
Pisum sativum L. cv. Frisson. Cadmium caused a reduction of root length related to concentration, with an almost complete block of growth in plants treated with 250
μM Cd, from 24
h of treatment. Root lengthening is generally related to apical meristem activity, however, in the examined pea plants, mitotic activity was suppressed by 2.5 and 25
μM Cd treatment, while the highest Cd concentration, 250
μM, caused the occurrence of mitotic figures consisting almost exclusively of prophases. The lack of relation between root lengthening and mitotic activity was explained by the meristematic activity in the first period of treatment and by a different cell elongation. Lower (0.25, 0.5 and 1
μM), non-blocking Cd concentrations induced a number of mitotic aberrations, mainly consisting of sticky metaphases and anaphase bridges, whose frequency increased with Cd concentration. Besides, Cd induced variations of the percentages of nucleus populations in the differentiated roots, increasing the percentage of 4C nuclei and decreasing that of 2C. The mechanisms involved in the nuclear response to Cd, and the possible relations between Cd alteration of meristem cell activity and nuclear ploidy of differentiated cells are discussed.</description><subject>Agronomy. Soil science and plant productions</subject><subject>apical meristems</subject><subject>Biological and medical sciences</subject><subject>Cadmium</subject><subject>cell differentiation</subject><subject>cell nucleus</subject><subject>Chromosome aberrations</subject><subject>chromosome number</subject><subject>cytotoxicity</subject><subject>Economic plant physiology</subject><subject>field crops</subject><subject>Flow cytometry</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>length</subject><subject>mitosis</subject><subject>Mitotic index</subject><subject>peas</subject><subject>phytotoxicity</subject><subject>Pisum sativum</subject><subject>plant damage</subject><subject>polyploidy</subject><subject>Root apical meristems</subject><subject>root growth</subject><subject>root meristems</subject><subject>seedlings</subject><subject>Symbiosis (nodules, symbiotic nitrogen fixation, mycorrhiza...)</subject><issn>0098-8472</issn><issn>1873-7307</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2006</creationdate><recordtype>article</recordtype><recordid>eNqFkcFq3DAQhkVpoNukzxBd2pudkey17GMISVpYSKHNWcjyKGixpa3GXrpvXy0OzTGnuXz_r5lPjF0LKAWI5mZfYjji30Mf51ICbEvoSoD2A9uIVlWFqkB9ZBuAri3aWslP7DPRHgBUpZoNm-6dQzsTj45bM0x-mXgMfMLkacaJGzv7o59P3ISBh8WOuBA_jNEPJ-4DTzGu2Z-ecpJMpvPcldweS_6QSyi3EeIw-vBCV-zCmZHwy-u8ZM8P97_vvhe7p8cfd7e7wtZNMxdt16reogNhVaOUNdY6UYEYhDRN39StAuyVE13tBMoBRKekkdsB-kb2diuqS_Zt7T2k-GdBmvXkyeI4moBxIS1q1W0lyAyqFbQpEiV0-pD8ZNJJC9BnvXqv_-vVZ70aOp315uTX1ycMWTO6ZIL19BZva6iy7sxdr5wzUZuXbEQ__5JwPkfIuqrOxO1KYDZy9Jg0WY_B4uBT_ho9RP_uNv8AQk-fZA</recordid><startdate>20061201</startdate><enddate>20061201</enddate><creator>Fusconi, Anna</creator><creator>Repetto, Ombretta</creator><creator>Bona, Elisa</creator><creator>Massa, Nadia</creator><creator>Gallo, Cristina</creator><creator>Dumas-Gaudot, Eliane</creator><creator>Berta, Graziella</creator><general>Elsevier B.V</general><general>Elsevier Science</general><scope>FBQ</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>C1K</scope><scope>SOI</scope></search><sort><creationdate>20061201</creationdate><title>Effects of cadmium on meristem activity and nucleus ploidy in roots of Pisum sativum L. cv. Frisson seedlings</title><author>Fusconi, Anna ; Repetto, Ombretta ; Bona, Elisa ; Massa, Nadia ; Gallo, Cristina ; Dumas-Gaudot, Eliane ; Berta, Graziella</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c466t-8987bcef01c7677caccf1301d12a6b64870eb7f194f1e2d01972a25d0b62bc513</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2006</creationdate><topic>Agronomy. Soil science and plant productions</topic><topic>apical meristems</topic><topic>Biological and medical sciences</topic><topic>Cadmium</topic><topic>cell differentiation</topic><topic>cell nucleus</topic><topic>Chromosome aberrations</topic><topic>chromosome number</topic><topic>cytotoxicity</topic><topic>Economic plant physiology</topic><topic>field crops</topic><topic>Flow cytometry</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>length</topic><topic>mitosis</topic><topic>Mitotic index</topic><topic>peas</topic><topic>phytotoxicity</topic><topic>Pisum sativum</topic><topic>plant damage</topic><topic>polyploidy</topic><topic>Root apical meristems</topic><topic>root growth</topic><topic>root meristems</topic><topic>seedlings</topic><topic>Symbiosis (nodules, symbiotic nitrogen fixation, mycorrhiza...)</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fusconi, Anna</creatorcontrib><creatorcontrib>Repetto, Ombretta</creatorcontrib><creatorcontrib>Bona, Elisa</creatorcontrib><creatorcontrib>Massa, Nadia</creatorcontrib><creatorcontrib>Gallo, Cristina</creatorcontrib><creatorcontrib>Dumas-Gaudot, Eliane</creatorcontrib><creatorcontrib>Berta, Graziella</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Environment Abstracts</collection><jtitle>Environmental and experimental botany</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Fusconi, Anna</au><au>Repetto, Ombretta</au><au>Bona, Elisa</au><au>Massa, Nadia</au><au>Gallo, Cristina</au><au>Dumas-Gaudot, Eliane</au><au>Berta, Graziella</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effects of cadmium on meristem activity and nucleus ploidy in roots of Pisum sativum L. cv. Frisson seedlings</atitle><jtitle>Environmental and experimental botany</jtitle><date>2006-12-01</date><risdate>2006</risdate><volume>58</volume><issue>1</issue><spage>253</spage><epage>260</epage><pages>253-260</pages><issn>0098-8472</issn><eissn>1873-7307</eissn><coden>EEBODM</coden><abstract>The effects of cadmium (Cd) administration on primary root growth, mitotic activity of apical meristems, mitotic aberrations and percentage of nucleus ploidy classes of differentiated roots were examined in
Pisum sativum L. cv. Frisson. Cadmium caused a reduction of root length related to concentration, with an almost complete block of growth in plants treated with 250
μM Cd, from 24
h of treatment. Root lengthening is generally related to apical meristem activity, however, in the examined pea plants, mitotic activity was suppressed by 2.5 and 25
μM Cd treatment, while the highest Cd concentration, 250
μM, caused the occurrence of mitotic figures consisting almost exclusively of prophases. The lack of relation between root lengthening and mitotic activity was explained by the meristematic activity in the first period of treatment and by a different cell elongation. Lower (0.25, 0.5 and 1
μM), non-blocking Cd concentrations induced a number of mitotic aberrations, mainly consisting of sticky metaphases and anaphase bridges, whose frequency increased with Cd concentration. Besides, Cd induced variations of the percentages of nucleus populations in the differentiated roots, increasing the percentage of 4C nuclei and decreasing that of 2C. The mechanisms involved in the nuclear response to Cd, and the possible relations between Cd alteration of meristem cell activity and nuclear ploidy of differentiated cells are discussed.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.envexpbot.2005.09.008</doi><tpages>8</tpages></addata></record> |
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| subjects | Agronomy. Soil science and plant productions apical meristems Biological and medical sciences Cadmium cell differentiation cell nucleus Chromosome aberrations chromosome number cytotoxicity Economic plant physiology field crops Flow cytometry Fundamental and applied biological sciences. Psychology length mitosis Mitotic index peas phytotoxicity Pisum sativum plant damage polyploidy Root apical meristems root growth root meristems seedlings Symbiosis (nodules, symbiotic nitrogen fixation, mycorrhiza...) |
| title | Effects of cadmium on meristem activity and nucleus ploidy in roots of Pisum sativum L. cv. Frisson seedlings |
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