A mixture of trehalose derivatives mitigates the adverse effects of water deficits in maize: an analysis of photosynthetic efficiency
| Autor: | Kamila Rezende Dázio de Souza, Paulo César Magalhães, Thiago Corrêa de Souza, J.R. Mantovani, T.B. Souza, J.A.N. Portugal, D.F. Dias, A.S. Ambrósio, L.C. Silva |
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| Přispěvatelé: | Universidade Federal de Alfenas, Unifenas, PAULO CESAR MAGALHAES, CNPMS, Universidade Federal de Ouro Preto, Universidade Federal de Alfenas. |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Photosystem II Physiology Plant Science gas exchange Photosynthetic efficiency Photosynthesis chlorophyll a fluorescence 01 natural sciences Water deficit chemistry.chemical_compound Clorofila Milho lcsh:Botany Quenching (fluorescence) Chemistry zea mays l 04 agricultural and veterinary sciences Trehalose Electron transport chain lcsh:QK1-989 Horticulture Troca gasosa Densidade estomática Anatomia foliar 040103 agronomy & agriculture 0401 agriculture forestry and fisheries leaf anatomy Azide stomatal density 010606 plant biology & botany |
| Zdroj: | Photosynthetica, Vol 58, Iss 3, Pp 808-818 (2020) Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice) Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
| ISSN: | 1573-9058 0300-3604 |
| Popis: | This study tested a tosylated and azide trehalose derivative mixture for its ability to mitigate water deficit-induced stress in maize via photosynthetic efficiency analyses. The experiment was conducted in greenhouse pots, using a maize hybrid that is sensitive to drought. The mixture of derivatives (28 mM) was applied with a hand sprayer. Plants containing five/six fully expanded leaves were subjected to water deficit stress for 12 d, followed by rehydration. The derivative mixture increased the photosynthetic rate, electron transport rate, and photochemical quenching, and mitigated damage to photosystem II. Moreover, it led to anatomical modifications in the leaf that increased the photosynthetic rate. These results suggest that the trehalose derivative mixture mitigates stress-induced damage in the maize hybrid and may represent a new stimulant for water-deficit tolerance. Made available in DSpace on 2020-08-15T04:11:30Z (GMT). No. of bitstreams: 1 Mixture-trehalose.pdf: 1638946 bytes, checksum: bc4206b37aae05fcd88ec3d01791a875 (MD5) Previous issue date: 2020 |
| Databáze: | OpenAIRE |
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