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24-Epibrassinolide mechanisms regulating blossom-end rot development in tomato fruit. Repositório Alice
RIBOLDI, L. B.; GAZIOLA, S. A.; AZEVEDO, R. A.; FREITAS, S. T. de; CASTRO, P. R. de C. e.
Blossom-end rot (BER) is a physiological disorder believed to be triggered by low Ca2+ content in the distal fruit tissue. However, many other factors can also determine fruit susceptibility to BER. It is possible that during fruit growth, Ca2+ imbalance can increase membrane leakiness, which may trigger the accumulation of reactive oxygen species, leading to cell death. Brassinosteroids are a class of plant hormones involved in stress defenses, specially increasing the activity of antioxidant enzymes and the accumulation of antioxidant compounds, such as ascorbic acid. The objective of this study was to understand the mechanisms by which 24-epibrassinolide (EBL) reduces fruit susceptibility to BER. Tomato plants ?BRS Montese? were cultivated in a...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: 24-Epibrassinolide; BRS Montese; Blossom-End Rot; Podridão da extremidade da flor; Brassinosteróides; Deficiência de cálcio; Estresse oxidativo; Tomate; Doença; Tomatoes.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1113189
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Expression analysis of cell wall assembly and remodelling-related genes in Arabidopsis roots subjected to boron stress and brassinosteroid at different developmental stages Acta Botanica
İşkil,Rabia; Surgun-Acar,Yonca.
ABSTRACT Plant cell walls are affected by many biotic and abiotic stress conditions. The aim of this study is to determine the effects of 24-Epibrassinolide (EBL) on some cell wall-related genes in root tissue of five- and ten-week-old Arabidopsis thaliana plants exposed to boron (B) deficiency (0 µM) or toxicity (3000 µM) at the transcriptional level. Expressions of the genes that encode cellulose synthase (CESA1, CESA4, CESA6 and CESA8), cellulose synthase-like (CSLB5), expansin (EXPA5, EXPA8 and EXPA14) and cell wall protein (SEB1) decreased under conditions of B deficiency and toxicity. EBL treatments, in general, led the expressions of these genes to reduce significantly. Expressions of xyloglucan endotransglucosylase/hydrolase genes (XTH21 and XTH23)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 24-Epibrassinolide; Arabidopsis thaliana; Boron; Cellulose synthase; Gene expression; Expansin; Pectin methylesterase; Xyloglucan endotransglucosylase/hydrolase.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000400546
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