Effects of Temperature on the Digestible Protein Content of Grains during Ripening in a Seed-protein Mutant Rice Cultivar LGCsoft

Ohdaira, Youichi; Takeda, Hiroyuki; Sasaki, Rika

doi:10.1626/pps.13.132

Cited by 6 publications

(5 citation statements)

References 17 publications

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“…Moreover, an increase in storage proteins has been reported at high temperature, whereas prolamin content decreased (Lin et al, 2010;Ohdaira, Takeda, & Sasaki, 2010). A study on protein size distribution in the plant material included in this study has shown that low molecular weight protein that includes prolamins formed the major proportion of the proteins (Mukamuhirwa et al, 2018).…”

Section: Discussionmentioning

confidence: 60%

“…Previous research has shown that high temperature during the anthesis stages causes degradation of ribosomal proteins that may perturb the protein biosynthesis pathway (Mu et al, ). Moreover, an increase in storage proteins has been reported at high temperature, whereas prolamin content decreased (Lin et al, ; Ohdaira, Takeda, & Sasaki, ). A study on protein size distribution in the plant material included in this study has shown that low molecular weight protein that includes prolamins formed the major proportion of the proteins (Mukamuhirwa et al, ).…”

Section: Discussionmentioning

confidence: 99%

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Effect of intermittent drought on grain yield and quality of rice (Oryza sativa L.) grown in Rwanda

Mukamuhirwa

Hovmalm

Ortíz

et al. 2019

J Agronomy Crop Science

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The climate change will contribute drought and temperature extremes to rice growing systems, especially when cultivated in equatorial regions. To evaluate opportunities to cultivate and breed drought‐tolerant rice, seven rice cultivars were evaluated in Rwanda for recurring morphological drought scores, grain yield and components, and quality characteristics. The cultivation conditions, that is site and drought treatment, impacted morphological drought scores, growth and yield attributes, while cultivar affected quality attributes. Thus, site showed a higher impact on grain yield and components than drought and cultivar, with generally a reduced grain yield at the low‐temperature site, as a result of low spikelet fertility. Morphological drought scores were generally increased by drought, while drought at the reproductive stage at the high‐temperature site was negative for yield and its components. The cultivars “Intsindagirabigega” and “Jyambere” were adapted to high‐temperature site conditions. The cultivar “Intsindagirabigega” had the highest amylose content, and “Mpembuke,” the highest antioxidant capacity. Thus, climate change with increased temperature and drought extremes may increase rice productivity in cool areas, while especially drought at reproductive stage will be detrimental in low altitude areas with high temperature. Cultivar variation indicated opportunities for selection and breeding of climate change tolerant rice cultivars which should be of immediate priority.

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Section: Discussionmentioning

confidence: 60%

Section: Discussionmentioning

confidence: 99%

Effect of intermittent drought on grain yield and quality of rice (Oryza sativa L.) grown in Rwanda

Mukamuhirwa

Hovmalm

Ortíz

et al. 2019

J Agronomy Crop Science

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“…Moreover, high nighttime temperature could potentially deteriorate the eating quality of rice, because of the significantly positive correlation between nighttime temperature and protein concentration in grain (Figure 3c). Inconsistent results have been observed about the effect of high temperature on grain protein content, which was significantly increased in some studies (Cao et al, 2012(Cao et al, , 2017Kwak et al, 2018;Liang et al, 2010;Liu et al, 2013), but remained stable in other studies (Ma et al, 2008;Ohdaira et al, 2010). Joint analysis of metabolome and transcriptome indicated that starch metabolism was inhibited, while amino acid accumulation was induced, both of which resulted in high protein content in grain at high temperature (Yamakawa & Hakata, 2010).…”

Section: Discussionmentioning

confidence: 96%

Inter‐annual climate variability constrains rice genetic improvement in China

Huang

Peng

et al. 2021

Food and Energy Security

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Yield potential has been significantly increased through hybrid rice breeding in the past, however, the genetic gain in grain yield is becoming marginal in recent years, especially in farmers' field. The increase in climate variability is one potential reason for the stagnant rice grain yield. Moreover, overuse of nitrogen fertilizer and poor grain quality of hybrid rice reduce its advantage over inbred rice. The present study evaluated seventy-eight elite hybrid varieties in 2014-2018 aiming to determine the climate variability and its influences on grain yield, nitrogen use efficiency (NUE), and grain protein content of the newly bred rice hybrid varieties simultaneously. It was found that daily maximum and minimum temperature, daily radiation varied significantly across planting years. The extreme differences for T max , T min , and radiation were 2.0°C, 1.5°C, and 3.6 MJ m −2 d −1 , respectively. Overall, grain yield of 22 varieties was significantly increased in comparison to that of the control cultivar Yangliangyou6 (YLY6), which was closely dependent on the planting year. Grain yield of these elite varieties ranged from 9.69 to 11.97 t ha −1 , and NUE for grain production (NUEg) from 47.3 to 60.9 kg kg −1 . The inter-annual variation in grain yield, NUEg, and grain protein content was significantly related to the average daily minimum temperature (T min ), due to its effects on grain filling percentage and harvest index. Moreover, these three properties are mutually correlated for all varieties across five years: grain yield positively correlated with NUEg (R 2 = 0.46) and negatively correlated with protein content (R 2 = 0.32), whereas NUEg negatively related to protein content (R 2 = 0.49). These results suggest that enhancing the adaptation to climate variability in hybrid rice breeding is essential and urgent for sustainable rice production in China.

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“…LGC DP / TP 0 10 DP / TP DP DP TP TP 200220022004Nishimura 2005200919741974a1991Ohdaira 20101974b1984 Ohdaira 2010…”

Section: Tpmentioning

confidence: 99%

“…LGC Ohdaira 2010Ohdaira 1998Ohdaira 2006Ohdaira 1975Ohdaira 1992Ohdaira 2000Ohdaira 2006Ohdaira 2010Ohdaira 1996 Ohdaira 2010…”

Section: キーワードunclassified

Analysis of Factors Affecting Seed Protein Compositions and Protein Contents in Rice of Seed-Protein Mutant Cultivars under Different Cropping Seasons

Ohdaira

Sasaki

Takeda

2013

Japanese journal of crop science

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The essential points for controlling the digestible protein content (DP) of rice grain at low levels in seed-protein mutant rice cultivars (SPMR) were investigated. A low-glutelin cultivar 'LGCsoft', a 26-kDa globulin-deficient low-glutelin cultivar 'LGC-Jun', and a normal-type cultivar 'Nihonmasari', were cultivated for 8-9 cropping seasons over a period of 4 years. Factors affecting seed protein composition and protein content in rice grain were analyzed. DP was affected by both the total protein content (TP) and the ratio of DP to TP in all cultivars. However, the effect of DP / TP on DP was greater in 'LGCsoft' and 'LGC-Jun' than in 'Nihonmasari'. A positive correlation between DP / TP and air temperature from 0 to 15 days after heading was observed in all cultivars. The highest correlation coefficient was observed from 0 to 10 days after heading in 'LGCsoft' and 'LGC-Jun', which was slightly earlier than in 'Nihonmasari'. Therefore, it is important to adjust the planting season to avoid high temperatures during the early ripening period for the cultivation of SPMR. TP affected DP more than DP / TP not only in 'Nihonmasari' but also in SPMR. A positive correlation was observed between TP and the nitrogen content of shoots at the heading stage, and a negative correlation was observed between TP and the percentage of ripened grains. These results indicate that shoot nitrogen status and percentage of ripened grains should be taken into account in planting and cultivation management plans.

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Effects of Temperature on the Digestible Protein Content of Grains during Ripening in a Seed-protein Mutant Rice Cultivar LGCsoft

Cited by 6 publications

References 17 publications

Effect of intermittent drought on grain yield and quality of rice (Oryza sativa L.) grown in Rwanda

Effect of intermittent drought on grain yield and quality of rice (Oryza sativa L.) grown in Rwanda

Inter‐annual climate variability constrains rice genetic improvement in China

Analysis of Factors Affecting Seed Protein Compositions and Protein Contents in Rice of Seed-Protein Mutant Cultivars under Different Cropping Seasons

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