{"id":{"repo_id":"adelaide","oai_identifier":"oai:digital.library.adelaide.edu.au:2440/93906"},"canonical_url":"https://search.dev.ndltd.org/etd/adelaide/oai:digital.library.adelaide.edu.au:2440/93906","repository":{"repo_id":"adelaide","name":"University of Adelaide","base_url":"https://digital.library.adelaide.edu.au/server/oai/request"},"display":{"title":"Regulation of (1,3;1,4)-beta-glucan synthesis in barley (Hordeum vulgare L.) endosperm and leaf tissues.","abstract":"This project was carried out to explore the regulatory mechanism for (1,3;1,4)-β-glucan synthesis in barley (Hordeum vulgare L.) in both endosperm and leaf tissues. For the grain (1,3;1,4)-β-glucan content regulation study, transcriptional profiles of candidate genes involved in (1,3;1,4)-β-glucan synthesis and degradation, from the developing barley endosperm, were compared across parental lines that had been previously used for grain (1,3;1,4)-β-glucan QTL studies. Correspondence between differences in transcript levels of selected genes and the QTL detected in parental lines was analysed. In the high (1,3;1,4)-β-glucan parent of a mapping population with a grain (1,3;1,4)-β-glucan QTL near/at the location of the HvCslF6 gene, HvCSLF6 transcript levels increased sharply late in endosperm development. In contrast, HvCslF6 transcript levels did not differ between parents of a mapping population in which no grain (1,3;1,4)-β-glucan QTL had been mapped near/at the HvCslF6 gene. Co-transcription of a β-glucan exo-glucanase gene, HvExoIV gene with HvCslF9 early in endosperm development and with HvCslF6 late in endosperm development indicated that HvEXOIV could be involved in (1,3;1,4)-β-glucan synthesis. It has been reported that leaf (1,3;1,4)-β-glucan is degraded when plants are incubated in the dark for prolonged periods and is re-synthesized upon re-exposure to a normal day/night cycle. Thus, to investigate the regulation of leaf (1,3;1,4)-β-glucan, the transcript levels of (1,3;1,4)-β-glucan synthase genes and related genes were profiled during (1,3;1,4)-β-glucan mobilization upon dark incubation. Some of the genes that responded to prolonged dark incubation showed diurnal transcription patterns, even in continuous darkness. Among the (1,3;1,4)-β-glucan synthase candidate genes, only HvCslH1 was up-regulated upon dark incubation. Its transcripts quickly returned to control levels upon re-exposure to the normal day/night cycle. None of the (1,3;1,4)-β-glucan synthase genes were up-regulated upon re- exposure to normal day/night cycles. Consistent with what was observed for HvExoIV, HvCslF6 and HvCslF9 in developing endosperm, HvExoIV seemed to exhibit co-transcription gene with the HvCslH1.","abstract_html":"This project was carried out to explore the regulatory mechanism for (1,3;1,4)-β-glucan synthesis in barley (Hordeum vulgare L.) in both endosperm and leaf tissues. For the grain (1,3;1,4)-β-glucan content regulation study, transcriptional profiles of candidate genes involved in (1,3;1,4)-β-glucan synthesis and degradation, from the developing barley endosperm, were compared across parental lines that had been previously used for grain (1,3;1,4)-β-glucan QTL studies. Correspondence between differences in transcript levels of selected genes and the QTL detected in parental lines was analysed. In the high (1,3;1,4)-β-glucan parent of a mapping population with a grain (1,3;1,4)-β-glucan QTL near/at the location of the HvCslF6 gene, HvCSLF6 transcript levels increased sharply late in endosperm development. In contrast, HvCslF6 transcript levels did not differ between parents of a mapping population in which no grain (1,3;1,4)-β-glucan QTL had been mapped near/at the HvCslF6 gene. Co-transcription of a β-glucan exo-glucanase gene, HvExoIV gene with HvCslF9 early in endosperm development and with HvCslF6 late in endosperm development indicated that HvEXOIV could be involved in (1,3;1,4)-β-glucan synthesis. It has been reported that leaf (1,3;1,4)-β-glucan is degraded when plants are incubated in the dark for prolonged periods and is re-synthesized upon re-exposure to a normal day/night cycle. Thus, to investigate the regulation of leaf (1,3;1,4)-β-glucan, the transcript levels of (1,3;1,4)-β-glucan synthase genes and related genes were profiled during (1,3;1,4)-β-glucan mobilization upon dark incubation. Some of the genes that responded to prolonged dark incubation showed diurnal transcription patterns, even in continuous darkness. Among the (1,3;1,4)-β-glucan synthase candidate genes, only HvCslH1 was up-regulated upon dark incubation. Its transcripts quickly returned to control levels upon re-exposure to the normal day/night cycle. None of the (1,3;1,4)-β-glucan synthase genes were up-regulated upon re- exposure to normal day/night cycles. Consistent with what was observed for HvExoIV, HvCslF6 and HvCslF9 in developing endosperm, HvExoIV seemed to exhibit co-transcription gene with the HvCslH1.","abstract_has_math":false,"creators":["Wong, Sie-Chuong"],"institution":null,"degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Mather, Diane Elizabeth","Fincher, Geoffrey Bruce"],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015","date_published":"2015","updated_at":"2026-07-24T00:50:34Z","subjects":["(1,3;1,4)-beta-glucan; HvCslF6; HvExoIV; barley; endosperm"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2440/93906","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Mather, Diane Elizabeth","Fincher, Geoffrey Bruce"]},{"key":"dc:creator","label":"Author","values":["Wong, Sie-Chuong"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.issued","label":"Date","values":["2015"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["(1,3;1,4)-beta-glucan; HvCslF6; HvExoIV; barley; endosperm"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/2440/93906"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["This project was carried out to explore the regulatory mechanism for (1,3;1,4)-β-glucan synthesis in barley (Hordeum vulgare L.) in both endosperm and leaf tissues. For the grain (1,3;1,4)-β-glucan content regulation study, transcriptional profiles of candidate genes involved in (1,3;1,4)-β-glucan synthesis and degradation, from the developing barley endosperm, were compared across parental lines that had been previously used for grain (1,3;1,4)-β-glucan QTL studies. Correspondence between differences in transcript levels of selected genes and the QTL detected in parental lines was analysed. In the high (1,3;1,4)-β-glucan parent of a mapping population with a grain (1,3;1,4)-β-glucan QTL near/at the location of the HvCslF6 gene, HvCSLF6 transcript levels increased sharply late in endosperm development. In contrast, HvCslF6 transcript levels did not differ between parents of a mapping population in which no grain (1,3;1,4)-β-glucan QTL had been mapped near/at the HvCslF6 gene. Co-transcription of a β-glucan exo-glucanase gene, HvExoIV gene with HvCslF9 early in endosperm development and with HvCslF6 late in endosperm development indicated that HvEXOIV could be involved in (1,3;1,4)-β-glucan synthesis. It has been reported that leaf (1,3;1,4)-β-glucan is degraded when plants are incubated in the dark for prolonged periods and is re-synthesized upon re-exposure to a normal day/night cycle. Thus, to investigate the regulation of leaf (1,3;1,4)-β-glucan, the transcript levels of (1,3;1,4)-β-glucan synthase genes and related genes were profiled during (1,3;1,4)-β-glucan mobilization upon dark incubation. Some of the genes that responded to prolonged dark incubation showed diurnal transcription patterns, even in continuous darkness. Among the (1,3;1,4)-β-glucan synthase candidate genes, only HvCslH1 was up-regulated upon dark incubation. Its transcripts quickly returned to control levels upon re-exposure to the normal day/night cycle. None of the (1,3;1,4)-β-glucan synthase genes were up-regulated upon re- exposure to normal day/night cycles. Consistent with what was observed for HvExoIV, HvCslF6 and HvCslF9 in developing endosperm, HvExoIV seemed to exhibit co-transcription gene with the HvCslH1."]},{"key":"dc:title","label":"Title","values":["Regulation of (1,3;1,4)-beta-glucan synthesis in barley (Hordeum vulgare L.) endosperm and leaf tissues."]}]}],"canonical_facts":{"dc:contributor.advisor":["Mather, Diane Elizabeth","Fincher, Geoffrey Bruce"],"dc:creator":["Wong, Sie-Chuong"],"dc:date.issued":["2015"],"dc:description.abstract":["This project was carried out to explore the regulatory mechanism for (1,3;1,4)-β-glucan synthesis in barley (Hordeum vulgare L.) in both endosperm and leaf tissues. For the grain (1,3;1,4)-β-glucan content regulation study, transcriptional profiles of candidate genes involved in (1,3;1,4)-β-glucan synthesis and degradation, from the developing barley endosperm, were compared across parental lines that had been previously used for grain (1,3;1,4)-β-glucan QTL studies. Correspondence between differences in transcript levels of selected genes and the QTL detected in parental lines was analysed. In the high (1,3;1,4)-β-glucan parent of a mapping population with a grain (1,3;1,4)-β-glucan QTL near/at the location of the HvCslF6 gene, HvCSLF6 transcript levels increased sharply late in endosperm development. In contrast, HvCslF6 transcript levels did not differ between parents of a mapping population in which no grain (1,3;1,4)-β-glucan QTL had been mapped near/at the HvCslF6 gene. Co-transcription of a β-glucan exo-glucanase gene, HvExoIV gene with HvCslF9 early in endosperm development and with HvCslF6 late in endosperm development indicated that HvEXOIV could be involved in (1,3;1,4)-β-glucan synthesis. It has been reported that leaf (1,3;1,4)-β-glucan is degraded when plants are incubated in the dark for prolonged periods and is re-synthesized upon re-exposure to a normal day/night cycle. Thus, to investigate the regulation of leaf (1,3;1,4)-β-glucan, the transcript levels of (1,3;1,4)-β-glucan synthase genes and related genes were profiled during (1,3;1,4)-β-glucan mobilization upon dark incubation. Some of the genes that responded to prolonged dark incubation showed diurnal transcription patterns, even in continuous darkness. Among the (1,3;1,4)-β-glucan synthase candidate genes, only HvCslH1 was up-regulated upon dark incubation. Its transcripts quickly returned to control levels upon re-exposure to the normal day/night cycle. None of the (1,3;1,4)-β-glucan synthase genes were up-regulated upon re- exposure to normal day/night cycles. Consistent with what was observed for HvExoIV, HvCslF6 and HvCslF9 in developing endosperm, HvExoIV seemed to exhibit co-transcription gene with the HvCslH1."],"dc:identifier.uri":["http://hdl.handle.net/2440/93906"],"dc:subject":["(1,3;1,4)-beta-glucan; HvCslF6; HvExoIV; barley; endosperm"],"dc:title":["Regulation of (1,3;1,4)-beta-glucan synthesis in barley (Hordeum vulgare L.) endosperm and leaf tissues."],"dc:type":["Thesis"]},"updated_at":"2026-07-24T00:50:34Z"}