Effects of High Temperature during Ripening Period on the Development and the Quality of Rice Kernels

Nagato, Kazuo; Ebata, Morie

doi:10.1626/jcs.34.59

Cited by 80 publications

(52 citation statements)

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“…The percentage of MWK in total ripened grains increased when the average temperature in the grainfilling period exceeds 23 −25ºC in Koshihikari as other experiments suggested (Nishio and Hashimoto, 1997;Arisaka, 2001;Furudoi, 2002). In our two-year fi eld experiments, the average temperature until the first of September covering a dominant grain-filling period in four cultivars except Nipponbare in 2006 was over 25ºC (Fig.…”

Section: Discussionmentioning

confidence: 62%

“…A high temperature during the grainfilling period causes the occurrence of milky white rice kernels (MWK), but the high temperature alone is not considered to directly increase MWK Morita, 2008). A lack of assimilate supply to grains plays a dominant role in increasing MWK, because the rate of MWK is higher in low radiant years (Terashima et al, 2001), plant thinning to increase assimilate supply to grains signifi cantly reduces the rate of MWK and defoliation or shading to reduce the assimilate supply increases the rate of MWK (Nagato and Ebata, 1965;Nakagawa et al, 2008).…”

mentioning

confidence: 99%

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High Risk of the Formation of Milky White Rice Kernels in Cultivars with Higher Potential Grain Growth Rate under Elevated Temperatures

Kobata¹,

Miya²,

Anh³

2011

Plant Production Science

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Section: Discussionmentioning

confidence: 62%

mentioning

confidence: 99%

High Risk of the Formation of Milky White Rice Kernels in Cultivars with Higher Potential Grain Growth Rate under Elevated Temperatures

Kobata¹,

Miya²,

Anh³

2011

Plant Production Science

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“…The quality of rice grains is reduced by applying high temperature to the developing panicles (Morita et al 2004). The high temperature during seed development depresses the starch accumulation and causes a chalky texture in mature grains such as white-back, basalwhite and milky white grains (Nagato and Ebata 1965). The chalky grain appearance was associated with the development of numerous air spaces between loosely packed starch granules and a change in light refraction (Tashiro and Wardlaw, 1991).…”

mentioning

confidence: 99%

Implications of the gene for F1–ATPase β subunit (<i>AtpB</i>) for the grain quality of rice matured in a high-temperature environment

Kusano

Arisu

Nakajima

et al. 2016

Plant Biotechnology

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Rice grain filling is impaired by high-temperature stress during seed development. This event results in reduced grain yield and quality because of formation of smaller and chalky grains, and often causes problems in agriculture. Hightemperature stress causes disorders in primary metabolism pathways including ATP accumulation in the developing seeds. To determine the effect on the genes for ATP biosynthesis, we created the transformant rice plants in which expression of an F1-ATPase β subunit gene (AtpB) was reduced by its RNAi gene, and elevated in developing seeds by its overexpression using the GlutelinB4 promoter. The transformants, which showed a high level of ATP accumulation as well as abundant AtpB transcript in the developing seeds, showed acquired tolerance to high-temperature stress during seed development because the ratio of perfect grains without any chalky part was significantly increased. In contrast, transformants harboring the RNAi gene showed reduction of grain quality with increase of ratio of white-core and white-berry grains when they were developed in the normal growth condition. Most of these seeds never germinated, and the RNAi transgene was poorly inherited by the progenies. These results suggest that AtpB plays important roles in rice seed development and that its gene expression is strongly influenced by high-temperature stress during the grain filling stage.

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“…따라서 27℃이상에서는 양적, 질적인 면에서 종실에 문제 가 발생하는 것은 명백해 보인다. 이러한 종실중 감소원인은 등숙속도의 증가가 등숙기간 의 단축을 보상하지 못해 결과적으로 천립중이 감소하였기 때문이다 (Nagato & Ebata, 1965;Tahshiro & Wardlaw, 1989 (Fig. 4).…”

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Study on Improving High-temperature Tolerance for Grain Filling Through Adjusting Sink Size

Kim¹,

Shon²,

Choi³

et al. 2013

Korean Journal of Crop Science

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The aim of this study was to test hypothesis that low sink size could mitigate deterioration of grain filling characteristics under high grain filling temperature. To achieve this aim, we selected Donganbyeo as a tolerant and Ilpumbyeo as susceptible variety to high temperature during grain filling period through screening 6 rice varieties. Then their spikelets number and the ratio of superior and inferior spikelet were compared. Grain weight and head rice ratio of Ilpumbyeo decreased significantly in high temperature. Ilpumbyeo had more spikelets than Donganbyeo. However, there was no significant difference between two varieties in the ratio of superior and inferior spikelets. So we tried to investigate the varietal difference of grain filling characteristics with removing inferior spikelets. Removing inferior spikelet in both of varieties could recover grain weight but not improve head rice ratio under high temperature. These results showed that sink/source ratio affected grain weight but didn't affect head rice ratio. Therefore, new approach was required to improve head rice ratio beyond sink/source ratio under high temperature.

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Effects of High Temperature during Ripening Period on the Development and the Quality of Rice Kernels

Cited by 80 publications

References 1 publication

High Risk of the Formation of Milky White Rice Kernels in Cultivars with Higher Potential Grain Growth Rate under Elevated Temperatures

High Risk of the Formation of Milky White Rice Kernels in Cultivars with Higher Potential Grain Growth Rate under Elevated Temperatures

Implications of the gene for F1–ATPase β subunit (<i>AtpB</i>) for the grain quality of rice matured in a high-temperature environment

Study on Improving High-temperature Tolerance for Grain Filling Through Adjusting Sink Size

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