Quantitation of oxalates in corms and shoots of Colocasia esculenta (L.) Schott under drought conditions

Detalhes bibliográficos
Autor(a) principal: Gouveia, Carla S.S.
Data de Publicação: 2018
Outros Autores: Ganança, José F.T., Lebot, Vincent, Carvalho, Miguel Â. A. Pinheiro de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.13/3150
Resumo: Oxalate (calcium oxalate) accumulation in taro plants (Colocasia esculenta (L.) Schott) impacts their nutritional quality, producing acridity, causing lips, mouth and throat tissues swelling if consumed fresh. The oxalate content is related to photosynthesis, through the glycolate–glyoxylate oxidation pathway. The plant’s photosynthetic rate usually increases in non-stressed conditions. Differences in photosynthetic rate are indirectly related to the chlorophyll content index. Protein accumulation and starch variation are also important traits to understand the taro oxalate synthesis caused by drought and how they affect corm quality. The purpose of this study was to quantitate oxalates in taro corms and shoots submitted to drought conditions and to evaluate how stress response can affect the nutritional quality of taro whole-plant. Seven taro genotypes from Madeira, Canaries and Pacific Community (SPC) collections were grown in greenhouse conditions and submitted to different watering regimes for drought tolerance screening. Corms and shoots were harvested and evaluated for oxalates (soluble, insoluble and total), chlorophyll content index (CCI), crude protein, starch, starch solubility in water and starch swelling power. All accessions had very high calcium oxalate content. Drought-tolerant genotypes showed good osmotic response by oxalate precipitation and mobilization through shoot to corm tissues, photosynthesis adaptation by increase of CCI, protein accumulation, and very low starch hydrolysis. Sensitive-drought genotypes showed less mobilization of calcium oxalate, decreased photosynthetic rate and protein synthesis, and slight increase of starch hydrolysis. Variation in taro oxalate content is consistent and significantly correlated with the photosynthetic rate, carbohydrate metabolism and protein synthesis.
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spelling Quantitation of oxalates in corms and shoots of Colocasia esculenta (L.) Schott under drought conditionsCarbohydrate metabolismChlorophyll content indexColocasia esculenta (L.) SchottDrought tolerancePhotosynthesisSoluble and insoluble oxalates.Faculdade de Ciências da VidaOxalate (calcium oxalate) accumulation in taro plants (Colocasia esculenta (L.) Schott) impacts their nutritional quality, producing acridity, causing lips, mouth and throat tissues swelling if consumed fresh. The oxalate content is related to photosynthesis, through the glycolate–glyoxylate oxidation pathway. The plant’s photosynthetic rate usually increases in non-stressed conditions. Differences in photosynthetic rate are indirectly related to the chlorophyll content index. Protein accumulation and starch variation are also important traits to understand the taro oxalate synthesis caused by drought and how they affect corm quality. The purpose of this study was to quantitate oxalates in taro corms and shoots submitted to drought conditions and to evaluate how stress response can affect the nutritional quality of taro whole-plant. Seven taro genotypes from Madeira, Canaries and Pacific Community (SPC) collections were grown in greenhouse conditions and submitted to different watering regimes for drought tolerance screening. Corms and shoots were harvested and evaluated for oxalates (soluble, insoluble and total), chlorophyll content index (CCI), crude protein, starch, starch solubility in water and starch swelling power. All accessions had very high calcium oxalate content. Drought-tolerant genotypes showed good osmotic response by oxalate precipitation and mobilization through shoot to corm tissues, photosynthesis adaptation by increase of CCI, protein accumulation, and very low starch hydrolysis. Sensitive-drought genotypes showed less mobilization of calcium oxalate, decreased photosynthetic rate and protein synthesis, and slight increase of starch hydrolysis. Variation in taro oxalate content is consistent and significantly correlated with the photosynthetic rate, carbohydrate metabolism and protein synthesis.The authors acknowledge the Programa Operacional da Região Autónoma da Madeira—PO Madeira 14–20 (grant number M1420-01-0145-FEDER-000011, CASBio). The first author wishes to acknowledge the Agência Regional para o Desenvolvimento da Investigação Tecnologia e Inovação (ARDITI) for the financial support grant number M1420-09-5369-FSE-000001.SpringerDigitUMaGouveia, Carla S.S.Ganança, José F.T.Lebot, VincentCarvalho, Miguel Â. A. Pinheiro de2021-03-04T19:16:24Z2018-01-01T00:00:00Z2018-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.13/3150engGouveia, C. S., Ganança, J. F., Lebot, V., & de Carvalho, M. Â. P. (2018). Quantitation of oxalates in corms and shoots of Colocasia esculenta (L.) Schott under drought conditions. Acta Physiologiae Plantarum, 40(12), 1-11. https://doi.org/10.1007/s11738-018-2784-710.1007/s11738-018-2784-7info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-09-05T12:56:04Zoai:digituma.uma.pt:10400.13/3150Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T15:06:00.094984Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Quantitation of oxalates in corms and shoots of Colocasia esculenta (L.) Schott under drought conditions
title Quantitation of oxalates in corms and shoots of Colocasia esculenta (L.) Schott under drought conditions
spellingShingle Quantitation of oxalates in corms and shoots of Colocasia esculenta (L.) Schott under drought conditions
Gouveia, Carla S.S.
Carbohydrate metabolism
Chlorophyll content index
Colocasia esculenta (L.) Schott
Drought tolerance
Photosynthesis
Soluble and insoluble oxalates
.
Faculdade de Ciências da Vida
title_short Quantitation of oxalates in corms and shoots of Colocasia esculenta (L.) Schott under drought conditions
title_full Quantitation of oxalates in corms and shoots of Colocasia esculenta (L.) Schott under drought conditions
title_fullStr Quantitation of oxalates in corms and shoots of Colocasia esculenta (L.) Schott under drought conditions
title_full_unstemmed Quantitation of oxalates in corms and shoots of Colocasia esculenta (L.) Schott under drought conditions
title_sort Quantitation of oxalates in corms and shoots of Colocasia esculenta (L.) Schott under drought conditions
author Gouveia, Carla S.S.
author_facet Gouveia, Carla S.S.
Ganança, José F.T.
Lebot, Vincent
Carvalho, Miguel Â. A. Pinheiro de
author_role author
author2 Ganança, José F.T.
Lebot, Vincent
Carvalho, Miguel Â. A. Pinheiro de
author2_role author
author
author
dc.contributor.none.fl_str_mv DigitUMa
dc.contributor.author.fl_str_mv Gouveia, Carla S.S.
Ganança, José F.T.
Lebot, Vincent
Carvalho, Miguel Â. A. Pinheiro de
dc.subject.por.fl_str_mv Carbohydrate metabolism
Chlorophyll content index
Colocasia esculenta (L.) Schott
Drought tolerance
Photosynthesis
Soluble and insoluble oxalates
.
Faculdade de Ciências da Vida
topic Carbohydrate metabolism
Chlorophyll content index
Colocasia esculenta (L.) Schott
Drought tolerance
Photosynthesis
Soluble and insoluble oxalates
.
Faculdade de Ciências da Vida
description Oxalate (calcium oxalate) accumulation in taro plants (Colocasia esculenta (L.) Schott) impacts their nutritional quality, producing acridity, causing lips, mouth and throat tissues swelling if consumed fresh. The oxalate content is related to photosynthesis, through the glycolate–glyoxylate oxidation pathway. The plant’s photosynthetic rate usually increases in non-stressed conditions. Differences in photosynthetic rate are indirectly related to the chlorophyll content index. Protein accumulation and starch variation are also important traits to understand the taro oxalate synthesis caused by drought and how they affect corm quality. The purpose of this study was to quantitate oxalates in taro corms and shoots submitted to drought conditions and to evaluate how stress response can affect the nutritional quality of taro whole-plant. Seven taro genotypes from Madeira, Canaries and Pacific Community (SPC) collections were grown in greenhouse conditions and submitted to different watering regimes for drought tolerance screening. Corms and shoots were harvested and evaluated for oxalates (soluble, insoluble and total), chlorophyll content index (CCI), crude protein, starch, starch solubility in water and starch swelling power. All accessions had very high calcium oxalate content. Drought-tolerant genotypes showed good osmotic response by oxalate precipitation and mobilization through shoot to corm tissues, photosynthesis adaptation by increase of CCI, protein accumulation, and very low starch hydrolysis. Sensitive-drought genotypes showed less mobilization of calcium oxalate, decreased photosynthetic rate and protein synthesis, and slight increase of starch hydrolysis. Variation in taro oxalate content is consistent and significantly correlated with the photosynthetic rate, carbohydrate metabolism and protein synthesis.
publishDate 2018
dc.date.none.fl_str_mv 2018-01-01T00:00:00Z
2018-01-01T00:00:00Z
2021-03-04T19:16:24Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.13/3150
url http://hdl.handle.net/10400.13/3150
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Gouveia, C. S., Ganança, J. F., Lebot, V., & de Carvalho, M. Â. P. (2018). Quantitation of oxalates in corms and shoots of Colocasia esculenta (L.) Schott under drought conditions. Acta Physiologiae Plantarum, 40(12), 1-11. https://doi.org/10.1007/s11738-018-2784-7
10.1007/s11738-018-2784-7
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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