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Blocking miR530 Improves Rice Resistance, Yield, and Maturity
- Source :
- Frontiers in Plant Science, Vol 12 (2021), Frontiers in Plant Science
- Publication Year :
- 2021
- Publisher :
- Frontiers Media SA, 2021.
-
Abstract
- MicroRNAs fine-tune plant growth and resistance against multiple biotic and abiotic stresses. The trade-off between biomass and resistance can penalize crop yield. In this study, we have shown that rice miR530 regulates blast disease resistance, yield, and growth period. While the overexpression of miR530 results in compromised blast disease resistance, reduced grain yield, and late maturity, blocking miR530 using a target mimic (MIM530) leads to enhanced resistance, increased grain yield, and early maturity. Further study revealed that the accumulation of miR530 was decreased in both leaves and panicles along with the increase of age. Such expression patterns were accordant with the enhanced resistance from seedlings to adult plants, and the grain development from panicle formation to fully-filled seeds. Divergence analysis of miR530 precursor with upstream 1,000-bp promoter sequence in 11 rice species revealed that miR530 was diverse in Oryza sativa japonica and O. sativa indica group, which was consistent with the different accumulation of miR530 in japonica accessions and indica accessions. Altogether, our results indicate that miR530 coordinates rice resistance, yield, and maturity, thus providing a potential regulatory module for breeding programs aiming to improve yield and disease resistance.
- Subjects :
- Abiotic component
miR530
Oryza sativa
Yield (engineering)
biology
Resistance (ecology)
Crop yield
fungi
food and beverages
Plant culture
Plant Science
Plant disease resistance
biology.organism_classification
yield
Japonica
SB1-1110
Horticulture
evolution
blast disease resistance
maturity
Panicle
Original Research
Subjects
Details
- Language :
- English
- ISSN :
- 1664462X
- Volume :
- 12
- Database :
- OpenAIRE
- Journal :
- Frontiers in Plant Science
- Accession number :
- edsair.doi.dedup.....8412af6b61f4740be3dc2fca79e4f4fc
- Full Text :
- https://doi.org/10.3389/fpls.2021.729560