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Exploring Local Maize Diversity for Increased Agricultural Sustainability: New Insights into Drought Stress Response and Recovery of Guinea-Bissau Landraces

2021-05Journal article Open access
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dc.contributor.authorTeixeira, Manuela
dc.contributor.authorFeijão, Eduardo
dc.contributor.authorCatarino, Luis
dc.contributor.authorMatos, Ana Rita
dc.contributor.authorFigueiredo, Andreia
dc.contributor.authorMarques da Silva, Jorge
dc.date.accessioned2021-08-04T13:12:38Z
dc.date.available2021-08-04T13:12:38Z
dc.date.issued2021-05
dc.description.abstractLandraces are rightfully known as the backbone of sustainable food production, particularly in areas experiencing significant environmental constraints. However, protecting landraces from genetic erosion and valuing their potential for plant breeding and sustainable food production requires in-depth understanding of their phenotypic traits. Two Guinea-Bissau landraces (GA, GV) and two elite cultivars (P98438, P0023) were subjected to drought stress for 7 (S1) and 12 (S2) days. After this period plants were rewatered (R). The relative water content (RWC) was unchanged in S1 and decreased in S2 in all genotypes. Chlorophyll a fluorescence parameters changed moderately in S1 and remarkably in S2, including on GA and GV plants, where a decrease of Fv/Fm and PI, and an increase in absorbed, trapped, and dissipated energy per reaction center, was found. P0023 plants showed the most contrasting behavior to Guinea-Bissau genotypes, presenting an increase in Fv/Fm and PI values and a decrease in the specific energy fluxes per reaction center (RC), whereas P9838 presented an intermediate behavior. Drought (S1 and S2) decreased the amount of chlorophyll (Chl.) and carotenoids in GA and GV plants. On the contrary, in the P0023, the only pigment to decrease with stress was Chl. b. Fatty acid (FA) analyses allowed for the identification of C16:0, C18:2, and C18:3 in larger amounts, and C14:0, C16:1t, C18:0, and C18:1 acids in lower abundance. Drought stress decreased C18:3, the double bond index, and the total FA (except for P0023 and GV in S2) and increased C14:0 and C16:0 acids. The expression of phospholipase D (PLD) was higher at S2. After recovery, PLD expression presented a notorious decrease on the Guinea-Bissau landraces. P0023 showed the smallest alterations after recovery, while Guinea’s plants suffered more radical alterations leading to the conclusion that Guinea’s landraces were more drought-sensitive and that their recovery rate was impaired.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationTeixeira, M.; Feijão, E.; Catarino, L.; Matos, A.R.; Figueiredo, A.; Marques da Silva, J. Exploring Local Maize Diversity for Increased Agricultural Sustainability: New Insights into Drought Stress Response and Recovery of Guinea-Bissau Landraces. Sustainability 2021, 13, 5441. https://doi.org/10.3390/su13105441pt_PT
dc.identifier.doi10.3390/su13105441pt_PT
dc.identifier.issn2071-1050
dc.identifier.urihttp://hdl.handle.net/10451/49249
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationBiosystems & Integrative Sciences Institute
dc.relationCentre for Ecology, Evolution and Environmental Changes
dc.relationFostering High Throughput Plant Phenotyping by an Interdisciplinary Approach
dc.relation.publisherversionhttps://www.mdpi.com/2071-1050/13/10/5441pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectchlorophyll a fluorescencept_PT
dc.subjectfatty acidspt_PT
dc.subjectphospholipase Dpt_PT
dc.subjectphotosynthetic pigmentspt_PT
dc.titleExploring Local Maize Diversity for Increased Agricultural Sustainability: New Insights into Drought Stress Response and Recovery of Guinea-Bissau Landracespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleBiosystems & Integrative Sciences Institute
oaire.awardTitleCentre for Ecology, Evolution and Environmental Changes
oaire.awardTitleFostering High Throughput Plant Phenotyping by an Interdisciplinary Approach
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FMulti%2F04046%2F2019/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00329%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FASP-PLA%2F28726%2F2017/PT
oaire.citation.issue10pt_PT
oaire.citation.startPage5441pt_PT
oaire.citation.titleSustainabilitypt_PT
oaire.citation.volume13pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream3599-PPCDT
person.familyNameCatarino
person.givenNameLuis
person.identifier.ciencia-id2615-C6BE-1540
person.identifier.orcid0000-0002-1261-9076
person.identifier.ridL-8701-2013
person.identifier.scopus-author-id6602434329
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication.latestForDiscovery63b33bc9-857b-412e-a5e5-3977960779f3
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