Impact of alternative irrigation practices on rice quality

Graham‐Acquaah, Seth; Siebenmorgen, T. J.; Reba, M. L.; Massey, J.H.; Mauromoustakos, Andy; Adviento-Borbe, A.; January, Robin; Burgos, Redentor; Baltz‐Gray, Joanne

doi:10.1002/cche.10182

Cited by 23 publications

(20 citation statements)

References 37 publications

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“…Efforts are being made to grow rice under semi-irrigated (aerobic) conditions (Dharmappa et al ., 2019). Irrigation practices like furrow and multiple inlet irrigation, alternate wetting and drying and overhead sprinklers have gained interest to optimize water use (Bouman et al ., 2007; Girsang et al ., 2019; Graham-Acquaah et al ., 2019).…”

Section: Introductionmentioning

confidence: 99%

Assessment of DNA methylation pattern under drought stress using methylation-sensitive randomly amplified polymorphism analysis in rice

Sapna¹,

Ashwini²,

Ramesh³

et al. 2020

Plant Genet. Resour.

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DNA methylation is known to regulate gene expression when plants are exposed to abiotic stress such as drought. Therefore, insight into DNA methylation pattern would be useful for a better understanding of the expression profile of genes associated with drought adaptation. In the present study, we attempted to analyse the DNA methylation pattern at the whole-genome level and the expression of a few drought-responsive genes in rice under different regimes of soil water status, i.e. puddled, 100 and 60% field capacities (FC). The methylation-sensitive randomly amplified polymorphic DNA analysis was employed to identify DNA methylation pattern. We observed an increase in DNA methylation at 60% FC, and reduced methylation under 100% FC compared to puddled condition. The genes such as protein phosphatases (PP2C) and phenylalanine ammonia-lyase (PAL) having CpG islands in their promoter region had lower expression level under 100 and 60% FC compared to puddled conditions. Heat shock protein 70 (HSP70) and RNA helicase 25 (RH25), with no CpG islands in their promoter region, exhibited enhanced expression compared to puddled plants. In rice, increased DNA methylation seems to be an important mechanism associated with drought responses, which probably regulates the methylation-sensitive gene expression. The drought-induced changes in DNA methylation would contribute for epigenetic mechanism. The study provided evidence to argue that drought-induced increased methylation might be one of the major mechanisms associated with acclimation responses in field crops like rice.

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Section: Introductionmentioning

confidence: 99%

Assessment of DNA methylation pattern under drought stress using methylation-sensitive randomly amplified polymorphism analysis in rice

Sapna¹,

Ashwini²,

Ramesh³

et al. 2020

Plant Genet. Resour.

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“…In contrast, Graham‐Acquaah et al. (2019) reported that SV was lower in rice grown with AWD and attributed the variation to a possible change in amylose content due to water stress. Our results revealed that irrigation treatments did not affect amylose content in three of the four cultivars.…”

Section: Discussionmentioning

confidence: 91%

“…Therefore, grain in the AWD treatment in Graham‐Acquaah et al. (2019) study may have experienced higher temperatures during the reproductive stage compared to the conventional irrigation treatments, altering grain quality.…”

Section: Introductionmentioning

confidence: 96%

“…(2000) and Graham‐Acquaah et al. (2019) reported that AWD did not affect HRY, although these studies were from only one season and the grain physicochemical properties were not measured. A study conducted in Uruguay also found HRY was not affected by a WS strategy similar to DPW; however, they did observe the effect was dependent on the growing region (Carracelas et al., 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Graham‐Acquaah et al. (2019) reported AWD lowered RVA setback and increased grain chalkiness and attributed the variation to a possible change in amylose content from water stress. However, high temperatures during the reproductive period can also cause increased grain chalkiness and reduced amylose content (Ahmed et al., 2015; Yamakawa et al., 2007).…”

Section: Introductionmentioning

confidence: 99%

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Effect of agronomic management on rice grain quality Part III: Australian water‐saving irrigation practices

et al. 2020

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Background and objectives Water availability is a significant issue in rice‐producing regions that are entirely dependent on irrigation and has led to the development of water‐saving (WS) techniques. Delayed permanent water (DPW) and delayed permanent water with a post‐flower flush (DPW + PFF) are WS methods suitable for temperate areas such as southeastern Australia. Currently, the impact of DPW and DPW + PFF on rice grain quality in southeastern Australia is poorly understood. We compared the effect of DPW and DPW + PFF with conventional irrigation methods on grain development and quality over three years. Findings Above 60 kg N/ha, head rice yield (HRY; the percentage of grain that remains whole or at least 75% of the original length after milling) was higher in the WS methods compared to plants grown with conventional irrigation methods. The WS methods reduced grain‐filling duration while prolonging the grain‐ripening phase due to a slower infield grain drying, which had a positive effect on HRY. When analyzing cooking parameters, RVA peak viscosity was lower in DPW + PFF compared to permanent flood, which increased RVA setback despite no differences in amylose and total protein content. DPW and DPW + PFF altered the grain protein composition improving HRY and affected the rice flour pasting properties. Conclusion These results indicate that DPW and DPW + PFF do not negatively impact milling quality at N rates above 60 kg/ha. However, changes in protein composition by DPW and DPW + PFF affected the cooking parameters. Significance and novelty These results are important for Australian and global rice producers who need to reduce their water inputs due to drought and receive financial penalties for poor quality grain. Our study is the first to provide a multiyear analysis of the effect of DPW and DPW + PFF on grain quality.

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Establishment of thresholds for alternate wetting and drying irrigation management in rice

et al. 2023

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The long-term viability of rice production in the midsouthern United States could be affected by irrigation management strategy. This study was conducted to determine if rice sustainability can be improved through manipulation of the irrigation threshold. The effects of an alternate wetting and drying (AWD) irrigation threshold and cultivar on water applied, rice grain yield, seed quality, irrigation water use efficiency, and net returns were investigated at Stoneville, MS, on a Sharkey clay (very fine, smectitic, thermic Chromic Epiaquert) during the 2015 through 2017 growing seasons. Water applied increased exponentially from 316 mm for the AWD threshold of −40 cm to 1061 mm for the conventional flood. For both hybrid and inbred lines, rice grain yield decreased linearly at a rate of 14 kg ha −1 for each centimeter decrease in irrigation threshold. Alternate wetting and drying irrigation threshold had no effect on seed quality parameters including chalk, milling total, and milling whole. Net returns were higher for AWD compared to a conventional flood for all cultivars. The economically optimal irrigation threshold was dependent on cultivar and rice price. Converting from a conventional flood to AWD will likely improve the sustainability of rice production in the midsouthern United States.

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Impact of alternative irrigation practices on rice quality

Cited by 23 publications

References 37 publications

Assessment of DNA methylation pattern under drought stress using methylation-sensitive randomly amplified polymorphism analysis in rice

Assessment of DNA methylation pattern under drought stress using methylation-sensitive randomly amplified polymorphism analysis in rice

Effect of agronomic management on rice grain quality Part III: Australian water‐saving irrigation practices

Establishment of thresholds for alternate wetting and drying irrigation management in rice

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