Submergence Tolerant Rice: SUB1’s Journey from Landrace to Modern Cultivar
By J. Bailey-Serres, T. Fukao, Pamela C. Ronald, A. Ismail, S. Heuer, D. Mackill. Rice, 2010
392 citations recorded by the source corpus.
Rice landraces tolerant of up to 2 weeks of complete submergence were collected from farmers’ fields in the 1950s. Success in fine mapping of SUBMERGENCE 1 (SUB1), a robust quantitative trait locus from the submergence tolerant FR13A landrace, has enabled marker-assisted breeding of high-yielding rice capable of enduring transient complete submergence. At the molecular level, SUB1 is a variable polygenic locus encoding two or three ethylene responsive factor (ERF) DNA binding proteins. All Oryza sativa accessions encode SUB1B and SUB1C at this locus. An additional ERF, SUB1A, is present at SUB1 in FR13A and other tolerant accessions. The induction of SUB1A expression by ethylene during submergence disrupts the elongation escape strategy typical of lowland and deepwater rice, by limiting ethylene-induced gibberellic acid-promoted elongation. Microarray and metabolite studies confirm that SUB1A orchestrates its effects on metabolism and growth in a submergence-dependent manner. Due to the conditional activity of SUB1A, new “Sub1” mega-varieties effectively provide submergence tolerance without apparent ill effect on development, productivity, or grain quality.
Subfields: Plant Science
View Paper: https://www.semanticscholar.org/paper/0d7bf798ad925fb29322f93c77902efa6a6fd17b
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Citations in the corpus
- Open access - Invited review THIS ARTICLE IS PART OF A SPECIAL ISSUE ENTITLED 'FLOODING STRESS' Adaptation to flooding during emergence and seedling growth in rice and weeds, and implications for crop establishment (2012, positive): “However, faster progress is now being witnessed after recent developments in molecular and genomics tools and approaches (Xu et al. 2006; Bailey-Serres et al. 2010).”
- Submergence Tolerance in Rice: Review of Mechanism, Breeding and, Future Prospects (2020, background): “From 2009 to 2010, Swarna-Sub1 was introduced in Bangladesh, India, and Indonesia, and BR11-Sub1 was made available in Bangladesh, while IR64-Sub1 was released in Indonesia and the Philippines [6].”
- Genotype-by-Environment Interaction and Plasticity: Exploring Genomic Responses of Plants to the Abiotic Environment (2013, background): “Because Sub1A does not appear to have deleterious effects in the absence of drought or flooding stress (e.g., exhibits conditional neutrality for yield), the locus has been widely introgressed into elite rice cultivars throughout Southeast Asia (Bailey-Serres et al. 2010).”
- Technological Innovations, Downside Risk, and the Modernization of Agriculture (2016, background): “Excluding flood tolerance, Swarna-Sub1 is otherwise genetically identical to Swarna—a fact that has been extensively documented by agricultural scientists (Neeraja et al. 2007; Bailey-Serres et al. 2010; Mackill et al. 2012).”