Observations on the Germ Aleurone of Barley. Morphology and Histochemistry
The germ aleurone over the embryonic axis of barley was examined in strips of tissue peeled off harvest-ripe grains. The germ aleurone is only one cell thick but resembles 'normal' aleurone in being composed of living cells with dense, lipid-rich cytoplasm and thick walls containing phenol...
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Veröffentlicht in: | Annals of botany 1994-02, Vol.73 (2), p.113-119 |
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description | The germ aleurone over the embryonic axis of barley was examined in strips of tissue peeled off harvest-ripe grains. The germ aleurone is only one cell thick but resembles 'normal' aleurone in being composed of living cells with dense, lipid-rich cytoplasm and thick walls containing phenolic material. In contrast to the cells of the 'normal' aleurone, germ aleurone cells contain very few phytin or protein deposits. When the germ aleurone is ruptured during germination, the walls at the torn edge become thickened with shiny golden-brown material, and 'sealed' to the testa. Two days after germination, lignin can be detected in the walls of a single row of germ aleurone cells adjoining the scutellum. The role of the germ aleurone in defence against microorganisms is discussed. It is suggested that the metabolic activities in the germ aleurone in imbibed grains compete with the embryo for oxygen, and thus may be one of the factors which determine whether a grain germinates or remains dormant. |
doi_str_mv | 10.1006/anbo.1994.1013 |
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Two days after germination, lignin can be detected in the walls of a single row of germ aleurone cells adjoining the scutellum. The role of the germ aleurone in defence against microorganisms is discussed. It is suggested that the metabolic activities in the germ aleurone in imbibed grains compete with the embryo for oxygen, and thus may be one of the factors which determine whether a grain germinates or remains dormant.</description><identifier>ISSN: 0305-7364</identifier><identifier>EISSN: 1095-8290</identifier><identifier>DOI: 10.1006/anbo.1994.1013</identifier><identifier>CODEN: ANBOA4</identifier><language>eng</language><publisher>London: Elsevier Ltd</publisher><subject>Agronomy. Soil science and plant productions ; Aleurone cells ; Barley ; Barley, Hordeum vulgare L., germ aleurone, histochemistry, defence mechanism, lignin, dormancy, microorganisms, pre-mature germination ; Biological and medical sciences ; Cell walls ; defence mechanism ; dormancy ; Economic plant physiology ; Embryo development. Germination ; Embryos ; Endosperm ; Fundamental and applied biological sciences. Psychology ; germ aleurone ; Germination ; Germination and dormancy ; Grains ; Growth and development ; Histochemistry ; Hordeum vulgare L ; lignin ; microorganisms ; Pericarp ; Plant physiology and development ; pre-mature germination ; Testa</subject><ispartof>Annals of botany, 1994-02, Vol.73 (2), p.113-119</ispartof><rights>1994</rights><rights>1994 Annals of Botany Company</rights><rights>1995 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c375t-467fa71602803798348956767143ad570de03aa390aaab03d3eac31154446fa3</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/42759010$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/42759010$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,780,784,803,27924,27925,58017,58250</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=3419501$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Cochrane, M.Patricia</creatorcontrib><title>Observations on the Germ Aleurone of Barley. Morphology and Histochemistry</title><title>Annals of botany</title><addtitle>Ann Bot</addtitle><description>The germ aleurone over the embryonic axis of barley was examined in strips of tissue peeled off harvest-ripe grains. The germ aleurone is only one cell thick but resembles 'normal' aleurone in being composed of living cells with dense, lipid-rich cytoplasm and thick walls containing phenolic material. In contrast to the cells of the 'normal' aleurone, germ aleurone cells contain very few phytin or protein deposits. When the germ aleurone is ruptured during germination, the walls at the torn edge become thickened with shiny golden-brown material, and 'sealed' to the testa. Two days after germination, lignin can be detected in the walls of a single row of germ aleurone cells adjoining the scutellum. The role of the germ aleurone in defence against microorganisms is discussed. It is suggested that the metabolic activities in the germ aleurone in imbibed grains compete with the embryo for oxygen, and thus may be one of the factors which determine whether a grain germinates or remains dormant.</description><subject>Agronomy. Soil science and plant productions</subject><subject>Aleurone cells</subject><subject>Barley</subject><subject>Barley, Hordeum vulgare L., germ aleurone, histochemistry, defence mechanism, lignin, dormancy, microorganisms, pre-mature germination</subject><subject>Biological and medical sciences</subject><subject>Cell walls</subject><subject>defence mechanism</subject><subject>dormancy</subject><subject>Economic plant physiology</subject><subject>Embryo development. Germination</subject><subject>Embryos</subject><subject>Endosperm</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>germ aleurone</subject><subject>Germination</subject><subject>Germination and dormancy</subject><subject>Grains</subject><subject>Growth and development</subject><subject>Histochemistry</subject><subject>Hordeum vulgare L</subject><subject>lignin</subject><subject>microorganisms</subject><subject>Pericarp</subject><subject>Plant physiology and development</subject><subject>pre-mature germination</subject><subject>Testa</subject><issn>0305-7364</issn><issn>1095-8290</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1994</creationdate><recordtype>article</recordtype><recordid>eNp1kDFv2zAQhYmgBeK6WbMF4NBV7tGkSHF0jTaukSaLhyILcaZOsVxZNEg1iP99aKjw1ulweO8d7n2M3QqYCQD9FfttmAlrVV6FvGITAbYsqrmFD2wCEsrCSK2u2aeU9gAw11ZM2Pppmyi-4tCGPvHQ82FH_J7igS86-htDTzw0_BvGjk4z_ivE4y504eXEsa_5qk1D8Ds65BlPn9nHBrtEN__mlG1-fN8sV8XD0_3P5eKh8NKUQ6G0adAIDfMKpLGVVJUttdFGKIl1aaAmkIjSAiJuQdaS0EshSqWUblBO2Ww862NIKVLjjrE9YDw5Ae4Mwp1BuDMIdwaRA1_GwBGTx66J2Ps2XVJSCVtm35TdjbZ9LhUvspqb0oKArBejnsvS20XH-Mdpk5u51e9nZx8fxfN6I53J_mr0U2bx2lJ0ybfUe6rbSH5wdWj_9_E7KryJDA</recordid><startdate>19940201</startdate><enddate>19940201</enddate><creator>Cochrane, M.Patricia</creator><general>Elsevier Ltd</general><general>Oxford University Press</general><general>Academic Press</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>19940201</creationdate><title>Observations on the Germ Aleurone of Barley. Morphology and Histochemistry</title><author>Cochrane, M.Patricia</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c375t-467fa71602803798348956767143ad570de03aa390aaab03d3eac31154446fa3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1994</creationdate><topic>Agronomy. Soil science and plant productions</topic><topic>Aleurone cells</topic><topic>Barley</topic><topic>Barley, Hordeum vulgare L., germ aleurone, histochemistry, defence mechanism, lignin, dormancy, microorganisms, pre-mature germination</topic><topic>Biological and medical sciences</topic><topic>Cell walls</topic><topic>defence mechanism</topic><topic>dormancy</topic><topic>Economic plant physiology</topic><topic>Embryo development. Germination</topic><topic>Embryos</topic><topic>Endosperm</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>germ aleurone</topic><topic>Germination</topic><topic>Germination and dormancy</topic><topic>Grains</topic><topic>Growth and development</topic><topic>Histochemistry</topic><topic>Hordeum vulgare L</topic><topic>lignin</topic><topic>microorganisms</topic><topic>Pericarp</topic><topic>Plant physiology and development</topic><topic>pre-mature germination</topic><topic>Testa</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Cochrane, M.Patricia</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Annals of botany</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Cochrane, M.Patricia</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Observations on the Germ Aleurone of Barley. Morphology and Histochemistry</atitle><jtitle>Annals of botany</jtitle><addtitle>Ann Bot</addtitle><date>1994-02-01</date><risdate>1994</risdate><volume>73</volume><issue>2</issue><spage>113</spage><epage>119</epage><pages>113-119</pages><issn>0305-7364</issn><eissn>1095-8290</eissn><coden>ANBOA4</coden><abstract>The germ aleurone over the embryonic axis of barley was examined in strips of tissue peeled off harvest-ripe grains. The germ aleurone is only one cell thick but resembles 'normal' aleurone in being composed of living cells with dense, lipid-rich cytoplasm and thick walls containing phenolic material. In contrast to the cells of the 'normal' aleurone, germ aleurone cells contain very few phytin or protein deposits. When the germ aleurone is ruptured during germination, the walls at the torn edge become thickened with shiny golden-brown material, and 'sealed' to the testa. Two days after germination, lignin can be detected in the walls of a single row of germ aleurone cells adjoining the scutellum. The role of the germ aleurone in defence against microorganisms is discussed. It is suggested that the metabolic activities in the germ aleurone in imbibed grains compete with the embryo for oxygen, and thus may be one of the factors which determine whether a grain germinates or remains dormant.</abstract><cop>London</cop><pub>Elsevier Ltd</pub><doi>10.1006/anbo.1994.1013</doi><tpages>7</tpages></addata></record> |
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source | Oxford University Press Archive; JSTOR Archive Collection A-Z Listing; EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection |
subjects | Agronomy. Soil science and plant productions Aleurone cells Barley Barley, Hordeum vulgare L., germ aleurone, histochemistry, defence mechanism, lignin, dormancy, microorganisms, pre-mature germination Biological and medical sciences Cell walls defence mechanism dormancy Economic plant physiology Embryo development. Germination Embryos Endosperm Fundamental and applied biological sciences. Psychology germ aleurone Germination Germination and dormancy Grains Growth and development Histochemistry Hordeum vulgare L lignin microorganisms Pericarp Plant physiology and development pre-mature germination Testa |
title | Observations on the Germ Aleurone of Barley. Morphology and Histochemistry |
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