{"title":"5 -羟色胺在核桃种子个体发育和萌发中的分布","authors":"Fred Lembeck, Gerhard Skofitsch","doi":"10.1016/S0044-328X(84)80090-2","DOIUrl":null,"url":null,"abstract":"<div><p>Serotonin (5-HT) was measured by HPLC with electrochemical detection in walnuts (<em>Juglans regia</em>) during ontogeny and germination.</p><p>Whereas 5-HT levels in catkins were low and did not increase during maturation, they increased in seed buds. The embryo reached highest amounts of 5-HT mainly during the final development of the seeds. Extremely high concentrations of 5-HT (1.6 mg g<sup>-1</sup>) were observed in the seed coat. In the seeds the 5-HT content remained stable during their storage over a period of at least one year.</p><p>The level of 5-HT in the cotyledons doubled during germination in two months. In the shoots the apical buds contained as much 5-HT as the seed coat whereas the 5-HT concentration in the roots was extremely low. Besides the possibility that 5-HT is not more than an end product of tryptophan metabolism its high concentration in seed coats and apical buds suggest a function in the defense against other plants or pests.</p></div>","PeriodicalId":23797,"journal":{"name":"Zeitschrift für Pflanzenphysiologie","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1984-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0044-328X(84)80090-2","citationCount":"8","resultStr":"{\"title\":\"Distribution of Serotonin in Juglans regia Seeds During Ontogenetic Development and Germination\",\"authors\":\"Fred Lembeck, Gerhard Skofitsch\",\"doi\":\"10.1016/S0044-328X(84)80090-2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Serotonin (5-HT) was measured by HPLC with electrochemical detection in walnuts (<em>Juglans regia</em>) during ontogeny and germination.</p><p>Whereas 5-HT levels in catkins were low and did not increase during maturation, they increased in seed buds. The embryo reached highest amounts of 5-HT mainly during the final development of the seeds. Extremely high concentrations of 5-HT (1.6 mg g<sup>-1</sup>) were observed in the seed coat. In the seeds the 5-HT content remained stable during their storage over a period of at least one year.</p><p>The level of 5-HT in the cotyledons doubled during germination in two months. In the shoots the apical buds contained as much 5-HT as the seed coat whereas the 5-HT concentration in the roots was extremely low. Besides the possibility that 5-HT is not more than an end product of tryptophan metabolism its high concentration in seed coats and apical buds suggest a function in the defense against other plants or pests.</p></div>\",\"PeriodicalId\":23797,\"journal\":{\"name\":\"Zeitschrift für Pflanzenphysiologie\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1984-05-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/S0044-328X(84)80090-2\",\"citationCount\":\"8\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Zeitschrift für Pflanzenphysiologie\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0044328X84800902\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Zeitschrift für Pflanzenphysiologie","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0044328X84800902","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Distribution of Serotonin in Juglans regia Seeds During Ontogenetic Development and Germination
Serotonin (5-HT) was measured by HPLC with electrochemical detection in walnuts (Juglans regia) during ontogeny and germination.
Whereas 5-HT levels in catkins were low and did not increase during maturation, they increased in seed buds. The embryo reached highest amounts of 5-HT mainly during the final development of the seeds. Extremely high concentrations of 5-HT (1.6 mg g-1) were observed in the seed coat. In the seeds the 5-HT content remained stable during their storage over a period of at least one year.
The level of 5-HT in the cotyledons doubled during germination in two months. In the shoots the apical buds contained as much 5-HT as the seed coat whereas the 5-HT concentration in the roots was extremely low. Besides the possibility that 5-HT is not more than an end product of tryptophan metabolism its high concentration in seed coats and apical buds suggest a function in the defense against other plants or pests.
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