Heat tolerance in rice mutants is associated with reduced accumulation of reactive oxygen species
Year: 2011
Type: article
Abstract: Four mutants induced by ethylmethane sulphonate (N22-H-dgl56, N22-H-dgl101, N22-H-dgl162 and N22-H-dgl219) with conspicuous dark green leaves were identified in the drought and heat-tolerant rice cultivar Nagina22 (N22), when screened under prolonged drought and heat conditions in field. During dark-induced senescence, these mutants maintained higher chlorophyll and carotenoid contents, and photochemical efficiency of photosystem 2 in comparison with N22. Following heat treatment, these mutants accumulated less reactive oxygen species (assayed by histochemical staining for H2O2 and superoxide radicals) and maintained higher chlorophyll content than N22.
Source: Biologia Plantarum
Authors: M. Panigrahy, S. Neelamraju, D. Nageswara Rao, R. Ramanan
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: bronze
OpenAlex ID: W2012336296