Mapping Quantitative Trait Loci Controlling Cool-temperature Tolerance at Booting Stage in Temperate Japonica Rice.

Takeuchi, Yoshinobu; Hayasaka, Hiroshi; Chiba, Bunya; Tanaka, Isao; Shimano, Tomotoshi; Yamagishi, Masumi; Nagano, Keiji; Sasaki, Takuji; Yano, Masahiro

doi:10.1270/jsbbs.51.191

Cited by 126 publications

(94 citation statements)

References 18 publications

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“…Asano et al (2011) also defined sd1 as the responsible gene for qCL1a in japonica rice. A cooltemperature tolerance qCT-1 has been mapped to the region of qCL1a (Takeuchi et al, 2001). In this study, we report that cv Nipponbare carrying japonica-type sd1 is more susceptible to LT stress than the chromosomal substitution line SL5 carrying the phenotypically taller indica sd1 (Fig.…”

Section: Discussionmentioning

confidence: 75%

“…However, identification of the factors underlying temperature tolerance poses particular challenges. Cool-temperature tolerance in rice appears to be a highly complex trait that involves divergent loci in different rice lines (Takeuchi et al, 2001;Saito et al, 2001;Andaya and Mackill, 2003;Kuroki et al, 2007;Zeng et al, 2009;Saito et al, 2010;Zhou et al, 2010). These quantitative trait loci have been mapped on all twelve chromosomes.…”

Section: Discussionmentioning

confidence: 99%

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Reduction of Gibberellin by Low Temperature Disrupts Pollen Development in Rice

et al. 2014

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Microsporogenesis in rice (Oryza sativa) plants is susceptible to moderate low temperature (LT; approximately 19°C) that disrupts pollen development and causes severe reductions in grain yields. Although considerable research has been invested in the study of cool-temperature injury, a full understanding of the molecular mechanism has not been achieved. Here, we show that endogenous levels of the bioactive gibberellins (GAs) GA 4 and GA 7 , and expression levels of the GA biosynthesis genes GA20ox3 and GA3ox1, decrease in the developing anthers by exposure to LT. By contrast, the levels of precursor GA 12 were higher in response to LT. In addition, the expression of the dehydration-responsive element-binding protein DREB2B and SLENDER RICE1 (SLR1)/DELLA was up-regulated in response to LT. Mutants involved in GA biosynthetic and response pathways were hypersensitive to LT stress, including the semidwarf mutants sd1 and d35, the gain-of-function mutant slr1-d, and gibberellin insensitive dwarf1. The reduction in the number of sporogenous cells and the abnormal enlargement of tapetal cells occurred most severely in the GA-insensitive mutant. Application of exogenous GA significantly reversed the male sterility caused by LT, and simultaneous application of exogenous GA with sucrose substantially improved the extent of normal pollen development. Modern rice varieties carrying the sd1 mutation are widely cultivated, and the sd1 mutation is considered one of the greatest achievements of the Green Revolution. The protective strategy achieved by our work may help sustain steady yields of rice under global climate change.

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Section: Discussionmentioning

confidence: 75%

Section: Discussionmentioning

confidence: 99%

Reduction of Gibberellin by Low Temperature Disrupts Pollen Development in Rice

et al. 2014

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“…Several screening procedures have been described for evaluating cold tolerance under controlled environment, which employ a range of air temperatures from 10 to 20°C (Lin & Peterson, 1975;Lee, 1979;Khan et al, 1986;Andaya & Mackill, 2003;Gunawardena et al, 2003) or cold water (19°C) for the screening (Saito et al, 2001;2004;Takeuchi et al, 2001). A simple method that allows for an objective evaluation of rice genotypes to low temperatures manipulated in the local breeding programs might make the selection process easier and less costly.…”

Section: Introductionmentioning

confidence: 99%

Rice cold tolerance at the reproductive stage in a controlled environment

Cruz¹,

Milach

Federizzi

2006

Sci. agric. (Piracicaba, Braz.)

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Cold tolerance of rice (Oryza sativa L.) during the reproductive stage is important to guarantee high yield under low temperature environments. Field selection, however, does not allow identification of adequate tolerance sources and limits selection of segregating lines due to variable temperature. The objective of this study was to devise methods for distinguishing rice genotypes as to their cold tolerance at the reproductive stage when evaluated under controlled temperature. The effect of cold temperatures was investigated in six rice genotypes at 17°C for varying length of time (three, five, seven and ten days) at two reproductive stages (microsporogenesis and anthesis). Cold tolerance was measured as the percentage of reduction in panicle exsertion and in spikelet fertility. Evaluating cold tolerance through the reduction in panicle exsertion did not allow for the distinction between cold tolerant from cold sensitive genotypes and, when the reduction in spikelet fertility was considered, a minimum of seven days was required to differentiate the genotypes for cold tolerance. Genotypes were more sensitive to cold at anthesis than at microsporogenesis and, as these stages were highly correlated, cold screening could be performed at anthesis only, since it is easier to determine. Rice cold tolerance at the reproductive stage may be characterized by the reduction in spikelet fertility due to cold temperature (17°C) applied for seven days at anthesis. Key words: cold temperature, microsporogenesis, anthesis, panicle exsertion, spikelet sterility TOLERÂNCIA AO FRIO DO ARROZ NO ESTÁDIO REPRODUTIVO SOB CONDIÇÕES CONTROLADASRESUMO: A tolerância do arroz (Oryza sativa L.) ao frio no período reprodutivo é importante para garantir alto rendimento em ambientes com temperatura baixa. No entanto, a seleção em condições de campo não permite identificar fontes adequadas de tolerância e limita a seleção de linhas segregantes devido à temperatura variável. Este trabalho teve por objetivo definir uma metodologia capaz de distinguir genótipos de arroz quanto à sua tolerância ao frio no período reprodutivo quando avaliados sob temperatura controlada. O efeito do frio foi investigado em seis genótipos de arroz submetidos a 17°C por períodos variáveis de tempo (três, cinco, sete e dez dias) em dois estádios do período reprodutivo (microsporogênese e antese). A tolerância ao frio foi avaliada por meio da porcentagem de redução na exerção da panícula e na fertilidade de espiguetas. O resultados indicaram que avaliar a tolerância ao frio por meio da redução na exerção da panícula não permitiu separar genótipos tolerantes ao frio de genótipos sensíveis e, quando avaliada por meio da redução na fertilidade de espiguetas, no mínimo sete dias foram necessários para diferenciar os genótipos quanto à tolerância ao frio. Eles foram mais sensíveis ao frio na antese que na microsporogênese e, como estes estádios foram altamente correlacionados, a seleção sob frio poderia ser feita somente neste estádio, que é de mais fácil determinaç...

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“…We previously performed QTL analysis for eating quality ) using doubled haploid lines derived from crosses between two japonica cultivars, Koshihikari and 'Akihikari', developed by Takeuchi et al (2001). The cooked rice of Koshihikari is very sticky, glossy, and its eating quality is excellent, whereas that of Akihikari is less sticky and its eating quality is much lower than Koshihikari (Yamamoto and Ogawa 1992).…”

Section: Introductionmentioning

confidence: 99%

“…Figure 1 shows the breeding scheme used for the development of the NILs. DH92 (a doubled haploid line, Takeuchi et al 2001) was chosen for further backcrossing with Akihikari. Successive backcrossings were conducted using Akihikari as the recurrent parent.…”

Section: Introductionmentioning

confidence: 99%

Verification of quantitative trait locus for stickiness of cooked rice and amylose content by developing near-isogenic lines

Kobayashi¹,

Tomita²,

Yu³

et al. 2008

Breed. Sci.

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We previously showed a major quantitative trait locus (QTL) for the eating quality of cooked rice (Oryza sativa L.) on the long arm of chromosome 2 using a population of doubled haploid lines derived from crosses between 'Koshihikari' and 'Akihikari'. Here, we verified the effect of QTL by developing near-isogenic lines (NILs). We successfully developed six NILs on the genetic background of Akihikari in which different segments of chromosome 2 were introduced from Koshihikari. On the basis of the measurement of traits related to eating quality, we observed significant differences in the stickiness of cooked rice and amylose content (AC) of grains among NILs. The stickiness scores and AC values of the NILs were negatively correlated.Comparison of the introduced segments with stickiness revealed that the candidate genomic region of chromosome 2 that affects stickiness lies between 515 kbp (defined by the simple sequence repeat (SSR) markers RM13658 and RM3730) and 773 kbp (defined by the SSR markers KA43 and RM6933). These results clearly showed that a chromosome 2 segment introduced from Koshihikari increased stickiness and decreased AC in the NILs, and hence verified the result obtained from the doubled haploid lines.

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Mapping Quantitative Trait Loci Controlling Cool-temperature Tolerance at Booting Stage in Temperate Japonica Rice.

Cited by 126 publications

References 18 publications

Reduction of Gibberellin by Low Temperature Disrupts Pollen Development in Rice

Reduction of Gibberellin by Low Temperature Disrupts Pollen Development in Rice

Rice cold tolerance at the reproductive stage in a controlled environment

Verification of quantitative trait locus for stickiness of cooked rice and amylose content by developing near-isogenic lines

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