Abscisic Acid Levels and Seed Dormancy
Dormant seeds from Fraxinus species require cold-temperature after-ripening prior to germination. Earlier, we found that abscisic acid (ABA) will inhibit germination of excised nondormant embryos and that this can be reversed with a combination of gibberellic acid and kinetin. Using Milborrow's...
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| Veröffentlicht in: | Plant physiology (Bethesda) 1968-09, Vol.43 (9), p.1443-1447 |
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| container_end_page | 1447 |
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| container_issue | 9 |
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| container_title | Plant physiology (Bethesda) |
| container_volume | 43 |
| creator | Sondheimer, E. D. S. Tzou Eva C. Galson |
| description | Dormant seeds from Fraxinus species require cold-temperature after-ripening prior to germination. Earlier, we found that abscisic acid (ABA) will inhibit germination of excised nondormant embryos and that this can be reversed with a combination of gibberellic acid and kinetin. Using Milborrow's quantitative "racemate dilution" method the ABA concentration in 3 types of Fraxinus seed and pericarp were determined. While ABA was present in all tissues, the highest concentration was found in the seed and pericarp of dormant F. americana. During the chilling treatment of F. americana the ABA levels decreased 37% in the pericarp and 68% in the seed. The ABA concentration of the seed of the nondormant species, F. ornus, is as low as that found in F. americana seeds after cold treatment. Experiments with exogenously added ABA solutions indicate that it is unlikely that the ABA in the pericarp functions in the regulation of seed dormancy. However, the ABA in the seed does seem to have a regulatory role in germination. |
| doi_str_mv | 10.1104/pp.43.9.1443 |
| format | Article |
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S. Tzou ; Eva C. Galson</creator><creatorcontrib>Sondheimer, E. ; D. S. Tzou ; Eva C. Galson</creatorcontrib><description>Dormant seeds from Fraxinus species require cold-temperature after-ripening prior to germination. Earlier, we found that abscisic acid (ABA) will inhibit germination of excised nondormant embryos and that this can be reversed with a combination of gibberellic acid and kinetin. Using Milborrow's quantitative "racemate dilution" method the ABA concentration in 3 types of Fraxinus seed and pericarp were determined. While ABA was present in all tissues, the highest concentration was found in the seed and pericarp of dormant F. americana. During the chilling treatment of F. americana the ABA levels decreased 37% in the pericarp and 68% in the seed. The ABA concentration of the seed of the nondormant species, F. ornus, is as low as that found in F. americana seeds after cold treatment. Experiments with exogenously added ABA solutions indicate that it is unlikely that the ABA in the pericarp functions in the regulation of seed dormancy. However, the ABA in the seed does seem to have a regulatory role in germination.</description><identifier>ISSN: 0032-0889</identifier><identifier>EISSN: 1532-2548</identifier><identifier>DOI: 10.1104/pp.43.9.1443</identifier><identifier>PMID: 16656935</identifier><language>eng</language><publisher>United States: American Society of Plant Physiologists</publisher><subject>After ripening ; Cooling ; Dormancy ; Embryos ; Germination ; Pericarp ; Physiological regulation ; Samaras ; Seed dormancy ; Seeds</subject><ispartof>Plant physiology (Bethesda), 1968-09, Vol.43 (9), p.1443-1447</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c370t-9927f67bc4081c57ccf591332220924d267135dd468a9cd073244ff4925ee4d13</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/4261485$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/4261485$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>230,314,778,782,801,883,27907,27908,58000,58233</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/16656935$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Sondheimer, E.</creatorcontrib><creatorcontrib>D. S. Tzou</creatorcontrib><creatorcontrib>Eva C. Galson</creatorcontrib><title>Abscisic Acid Levels and Seed Dormancy</title><title>Plant physiology (Bethesda)</title><addtitle>Plant Physiol</addtitle><description>Dormant seeds from Fraxinus species require cold-temperature after-ripening prior to germination. Earlier, we found that abscisic acid (ABA) will inhibit germination of excised nondormant embryos and that this can be reversed with a combination of gibberellic acid and kinetin. Using Milborrow's quantitative "racemate dilution" method the ABA concentration in 3 types of Fraxinus seed and pericarp were determined. While ABA was present in all tissues, the highest concentration was found in the seed and pericarp of dormant F. americana. During the chilling treatment of F. americana the ABA levels decreased 37% in the pericarp and 68% in the seed. The ABA concentration of the seed of the nondormant species, F. ornus, is as low as that found in F. americana seeds after cold treatment. Experiments with exogenously added ABA solutions indicate that it is unlikely that the ABA in the pericarp functions in the regulation of seed dormancy. However, the ABA in the seed does seem to have a regulatory role in germination.</description><subject>After ripening</subject><subject>Cooling</subject><subject>Dormancy</subject><subject>Embryos</subject><subject>Germination</subject><subject>Pericarp</subject><subject>Physiological regulation</subject><subject>Samaras</subject><subject>Seed dormancy</subject><subject>Seeds</subject><issn>0032-0889</issn><issn>1532-2548</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1968</creationdate><recordtype>article</recordtype><recordid>eNpVkM9LwzAUx4Mobk5vHkV60outSd5L01yEMX_CwIN6Dl2SakfX1qQb7L-3Y2Pq6T34fvi-x4eQc0YTxijetm2CkKiEIcIBGTIBPOYCs0MypLTfaZapATkJYU4pZcDwmAxYmopUgRiSq_EsmDKUJhqb0kZTt3JViPLaRm_O2ei-8Yu8NutTclTkVXBnuzkiH48P75PnePr69DIZT2MDknaxUlwWqZwZpBkzQhpTCMUAOOdUcbQ8lQyEtZhmuTKWSuCIRYGKC-fQMhiRu21vu5wtnDWu7nxe6daXi9yvdZOX-n9Sl1_6s1lpRjNJQfYF17sC33wvXej0ogzGVVVeu2YZtATADEQKPXmzJY1vQvCu2F9hVG_M6rbVCFrpjdkev_z72S-8U9kDF1tgHrrG73PkKcNMwA9Jc3tl</recordid><startdate>19680901</startdate><enddate>19680901</enddate><creator>Sondheimer, E.</creator><creator>D. S. Tzou</creator><creator>Eva C. Galson</creator><general>American Society of Plant Physiologists</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>5PM</scope></search><sort><creationdate>19680901</creationdate><title>Abscisic Acid Levels and Seed Dormancy</title><author>Sondheimer, E. ; D. S. Tzou ; Eva C. Galson</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c370t-9927f67bc4081c57ccf591332220924d267135dd468a9cd073244ff4925ee4d13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1968</creationdate><topic>After ripening</topic><topic>Cooling</topic><topic>Dormancy</topic><topic>Embryos</topic><topic>Germination</topic><topic>Pericarp</topic><topic>Physiological regulation</topic><topic>Samaras</topic><topic>Seed dormancy</topic><topic>Seeds</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sondheimer, E.</creatorcontrib><creatorcontrib>D. S. Tzou</creatorcontrib><creatorcontrib>Eva C. Galson</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Plant physiology (Bethesda)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sondheimer, E.</au><au>D. S. Tzou</au><au>Eva C. Galson</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Abscisic Acid Levels and Seed Dormancy</atitle><jtitle>Plant physiology (Bethesda)</jtitle><addtitle>Plant Physiol</addtitle><date>1968-09-01</date><risdate>1968</risdate><volume>43</volume><issue>9</issue><spage>1443</spage><epage>1447</epage><pages>1443-1447</pages><issn>0032-0889</issn><eissn>1532-2548</eissn><abstract>Dormant seeds from Fraxinus species require cold-temperature after-ripening prior to germination. Earlier, we found that abscisic acid (ABA) will inhibit germination of excised nondormant embryos and that this can be reversed with a combination of gibberellic acid and kinetin. Using Milborrow's quantitative "racemate dilution" method the ABA concentration in 3 types of Fraxinus seed and pericarp were determined. While ABA was present in all tissues, the highest concentration was found in the seed and pericarp of dormant F. americana. During the chilling treatment of F. americana the ABA levels decreased 37% in the pericarp and 68% in the seed. The ABA concentration of the seed of the nondormant species, F. ornus, is as low as that found in F. americana seeds after cold treatment. Experiments with exogenously added ABA solutions indicate that it is unlikely that the ABA in the pericarp functions in the regulation of seed dormancy. However, the ABA in the seed does seem to have a regulatory role in germination.</abstract><cop>United States</cop><pub>American Society of Plant Physiologists</pub><pmid>16656935</pmid><doi>10.1104/pp.43.9.1443</doi><tpages>5</tpages><oa>free_for_read</oa></addata></record> |
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| identifier | ISSN: 0032-0889 |
| ispartof | Plant physiology (Bethesda), 1968-09, Vol.43 (9), p.1443-1447 |
| issn | 0032-0889 1532-2548 |
| language | eng |
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| source | Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Jstor Complete Legacy; Alma/SFX Local Collection |
| subjects | After ripening Cooling Dormancy Embryos Germination Pericarp Physiological regulation Samaras Seed dormancy Seeds |
| title | Abscisic Acid Levels and Seed Dormancy |
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