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ABA regulation of post-germination desiccation tolerance in wheat cultivars contrasting in drought tolerance
Provedor de dados: 42
Autores: KOUR,SATINDER; ZHAWAR,VIKRAMJIT K.
ABSTRACT Post-germination desiccation tolerance (DT) was studied in two wheat cultivars. Effect of pretreatment of abscisic acid (ABA)/ osmotic/ salt/ heat stress was also studied. One day (d)-old seedlings of wheat cultivars PBW 644 (drought tolerant) and PBW 343 (drought susceptible) were exposed to ABA/stress treatment for next 1 d, desiccated for 4 d and subsequently rehydrated for 4 d. Biomass, protein, water, protein carbonyls (oxidative toxicity) and nitric oxide (NO) levels were measured in 2 d (treated), 6 d (desiccated), 10 d (rehydrated) seedlings. Vegetative reactive oxygen species (ROS)/ NO-pathways were studied under normal condition and ABA supply by supplying ROS/NO scavengers. Desiccation caused water loss and increased oxidative toxicity....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abiotic; Abscisic acid; Nitric oxide; Post germination desiccation tolerance; Wheat.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000401493